Description

The CXA1598M/S is a bipolar IC developed for

recording equalizer amplifier in analog cassette

decks. Incorporating the filter circuit has eliminated

the external inductor. Also, each of the six

parameters required for equalizer amplifiers can be

set independently with external resistance.

Features

· Inductor (coil) is unnecessary

· The six parameters (low frequency gain, medium

frequency gain, peaking gain, medium frequency

compensation frequency, peaking frequency, and

Q) required for recording equalizer amplifiers can

be set independently with external resistance

· Low frequency boost is possible with an external

capacitor

· Built-in recording mute function

(requiring only an external time constant circuit to

implement soft mute)

· Built-in 2 channels

· Small package

Applications

Recording equalizer amplifier for stereo analog

cassette decks

Structure

Bipolar silicon monolithic IC

Absolute Maximum Ratings

· Supply voltage V

· Operating temperature

Topr

20 to +75

°C

· Storage temperature

Tstg

65 to +150

°C

· Allowable power dissipation

(CXA1598M)

570

(CXA1598S)

880

Operating Conditions

Power supply

Dual power supplies (V

)

±6.5 to 8.0

Single power supply (V

)

10.0 to 16.0

CXA1598M/S

E95131A8Y

Recording Equalizer Amplifier for Stereo Cassette Decks

Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.

CXA1598M

24 pin SOP (Plastic)

CXA1598S

22 pin SDIP (Plastic)

CXA1598M/S

Block Diagram and Pin Configuration

CXA1598M

BIAS

REC EQ

I
N

f
M

PARAMETER

CONTROL

REC EQ

VGS

f
/
Q

I
R

I
N

CXA1598S

BIAS

REC EQ

I
N

f
M

PARAMETER

CONTROL

REC EQ

VGS

f
/
Q

I
R

I
N

CXA1598M/S

Pin Description

(Ta = 25°C, V

= 7.0V, V

= 7.0V)

Pin No.

Symbol

I/O

Z (in)

Equivalent circuit

Description

Typical pin

voltage

1
2
3

22
23
24

fxQ
f/Q
fM
GL
GH
GP

Connection pins of
resistors for setting the
recording equalizer
amplifier parameters.

Current input pins
used to set the
parameters for the
recording equalizer
amplifier.

Setting currents for
each parameter are
generated by
attaching resistors
between these pins
and the DGND pin.

1.2V

27k

DGND

192

(20)

(21)

(22)

CXA

1598M

CXA

1598S

1
2
3

20
21
22

FP CAL

54k

Peaking frequency
calibration pin.

Controlled with DC
voltages of 0 to 5V.
High = Peaking
frequency
increased
Low = Peaking
frequency reduced

Leave this pin
open when not
using the peaking
frequency
calibration function.

2.5V

54k

(17)

REC CAL

54k

Recording level
calibration pin.

Controlled with
DC voltages of 0
to 5V.
High = Recording
level gain
increased
Low = Recording
level gain reduced

Leave this pin
open when not
using the
recording level
calibration
function.

Connected to GND.

2.5V

DGND

0.0V

CXA1598M/S

REC MUTE

Recording mute
ON/OFF selection pin.

Recording mute is
controlled with DC
voltages of 0 to 5V.
High = Recording
mute OFF
Low = Recording
mute ON

Soft mute and fader
can be switched
over by changing
the time constant of
the external time
constant circuit.

5.0V

30k

REC IN1
REC IN2

50k

Recording equalizer
amplifier input pin.

0.0V 18dBv

GND

50k

(16)

(7)

10
15

BOOST1
BOOST2

9.5k

Connection pin of an
external capacitor for
low frequency boost.

When low
frequency boost is
unnecessary,
connect to GND for
positive/negative
dual power
supplies; connect a
capacitor (3.3µF or
more) for a single
power supply.

0.0V

4.8k 5.5k

35.5k

280

34k

GND

(9)

(14)

GND (VG)

Connect to GND for
positive/negative
dual power supplies.
V

/2 (center

potential) for a single
power supply.
(Connect a capacitor
of 10µF or more)

0.0V

Pin No.

Symbol

I/O

Z (in)

Equivalent circuit

Description

Typical pin

voltage

CXA

1598M

CXA

1598S

CXA1598M/S

Connect to the
negative power supply
for positive/negative
dual power supplies.
Connect to GND for a
single power supply.

7.0V

12
13

REC OUT1
REC OUT2

Recording equalizer
amplifier output pin.

0.0V 3.0dBv

11
12

Positive power
supply connection
pin.

7.0V

50k

200

(11)

(12)

IREF

Reference current
setting pin for
monolithic filter.

The reference
current can be set
by attaching a
resistor between
this pin and
DGND.

1.2V

(15)

27k

DGND

192

Pin No.

Symbol

I/O

Z (in)

Equivalent circuit

Description

Typical pin

voltage

CXA

1598M

CXA

1598S

CXA1598M/S

GH CAL

Medium frequency
calibration pin.

Controlled with
DC voltages of 0
to 5V.
High = Medium
frequency level
gain increased
Low = Medium
frequency level
gain reduced

Leave this pin
open when not
using the medium
frequency
calibration
function.

2.5V

54k

(18)

(19)

GP CAL

High frequency
calibration pin.

Controlled with
DC voltages of 0
to 5V.
High = High
frequency level
gain increased
Low = High
frequency level
gain reduced

Leave this pin
open when not
using the high
frequency
calibration
function.

2.5V

Pin No.

Symbol

I/O

Z (in)

Equivalent circuit

Description

Typical pin

voltage

CXA

1598M

CXA

1598S

CXA1598M/S

Electrical Characteristics

(Ta = 25°C, V

= 7.0V, V

= 7.0V)

Standard settings
RGL: 36k//510k, RGH: 62k//220k,
RGP: 36k//110k, RfM: 39k//910k,
Rf/Q: 47k//750k, RfxQ: 47k//620k

Recording equalizer amplifier reference output level
(315Hz)
(This output level is the tape reference 0dB which
generates magnetic flux of 250nWb/m.)

Input level when the reference output level is 315Hz,
3.0dBv
(For measurement, input a 315Hz, 18.0dBv signal to the
REC IN pins and then measure the output level.)

Input a 1kHz signal and set the output so that THD (total
harmonic distortion) is 1%. RL = 2.7k

(Measure the

distortion of a +11dB level-up signal.)

Input a 1kHz, 0.0dB (reference input level) signal and
measure the distortion. RL = 2.7k

(Measure the distortion as THD + N.)

With no signal, measure the noise using the "A"-WGT
filter. Rg = 5.1k

(The measured value is indicated

as the relative value compared to the reference level.)

With no signal, measure the DC offset voltage of the
REC OUT pin.

REC-MUTE = 0.5V (Use a 1kHz BPF.)
Input a 1kHz signal (+12dB level up) and measure the
attenuation when REC MUTE is on.

REC-MUTE = 2.5V
Input a 1kHz, 0.0dB (reference level) signal and measure
the attenuation characteristics of the soft mute function.

REC-CAL = 5.0V
Input a 315Hz signal (20dB level down) and measure
the amount of change compared to when the REC-CAL
function is at the standard setting.

REC-CAL = 0.0V
Input a 315Hz signal (20dB level down) and measure
the amount of change compared to when the REC-CAL
function is at the standard setting.

10.0

±6.5

10.0

19.8

11.0

57.0

500

6.0

5.0

7.5

13.6

±7.0

14.0

3.0

18.3

11.5

0.12

65.0

100

4.5

6.0

6.5

17.4

±8.0

16.0

16.8

0.6

500

3.0

7.0

5.5

dBv

Current consumption (I

)

Operating voltage range 1
(positive/negative dual power
supplies)

Operating voltage range 2
(single power supply)

Recording reference output
level

Recording reference input level

Signal handling
(1kHz, THD = 1%, RL = 2.7k

)

Total harmonic distortion
(1kHz, 0.0dB, RL = 2.7k

)

S/N ratio
("A"-WGT filter)

Output DC offset voltage
(REC OUT pin)

Mute characteristics 1
(REC-MUTE = 0.5V)

Mute characteristics 2
(REC-MUTE = 2.5V)

REC-CAL characteristics 1
(REC-CAL = 5.0V)

REC-CAL characteristics 2
(REC-CAL = 0.0V)

Item

Conditions

Min.

Typ.

Max. Unit

Entire LSI

Recording equalizer amplifier

CXA1598M/S

GH-CAL = 5.0V
RGH: 62k//220k, RGL · RGP: OPEN
RfM: 300k, Rf/Q: 18k, RfxQ: 12k
Input a 6.3kHz signal (20dB level down) and measure the
amount of change compared to when the GH-CAL function
is at the standard setting.

GH-CAL = 0.0V
RGH: 62k//220k, RGL · RGP: OPEN
RfM: 300k, Rf/Q: 18k, RfxQ: 12k
Input a 6.3kHz signal (20dB level down) and measure the
amount of change compared to when the GH-CAL function
is at the standard setting.

GP-CAL = 5.0V
RGP: 36k//110k, RGL · RGH: OPEN
RfM: 300k, Rf/Q: 47k//750k, RfxQ: 47k//620k
Input a signal (20dB level down) and measure the amount
of change compared to when the GP-CAL function is at the
standard setting.

GP-CAL = 0.0V
RGP: 36k//110k, RGL · RGH: OPEN
RfM: 300k, Rf/Q: 47k//750k, RfxQ: 47k//620k
Input a signal (20dB level down) and measure the amount
of change compared to when the GP-CAL function is at the
standard setting.

FP-CAL = 5.0V
Input a signal (20dB level down) and measure the amount
of change compared to when the FP-CAL function is at the
standard setting.

FP-CAL = 0.0V
Input a signal (20dB level down) and measure the amount
of change compared to when the FP-CAL function is at the
standard setting.

RGL: 36k//510k, RGH · RGP: OPEN or RGH: 62k//220k,
RGL · RGP: OPEN
RfM: 39k//910k, Rf/Q: 18k, RfxQ: 12k

RGP: 36k//110k, RGL · RGH: OPEN
RfM: 300k, Rf/Q: 47k//750k, RfxQ: 47k//620k

4.7

5.5

3.9

5.8

185

0.3

5.7

4.5

5.4

4.3

200

2.4

17.8

4.2

20.5

6.7

3.5

6.9

2.8

215

kHz

GH-CAL characteristics 1
(GH-CAL = 5.0V)

GH-CAL characteristics 2
(GH-CAL = 0.0V)

GP-CAL characteristics 1
(GP-CAL = 5.0V)

GP-CAL characteristics 2
(GP-CAL = 0.0V)

FP-CAL characteristics 1
(FP-CAL = 5.0V)

FP-CAL characteristics 2
(FP-CAL = 0.0V)

fM medium frequency
compensation frequency
variable width

fp peaking frequency variable
width

Peaking Q variable width

GL low frequency gain variable
width

GH medium frequency gain
variable width

GP peaking gain variable width

fM medium frequency
compensation frequency
deviation

fp peaking frequency deviation

Recording equalizer amplifier

Item

Conditions

Min.

Typ.

Max. Unit

CXA1598M/S

RGP: 36k//110k, RGL · RGH: OPEN
RfM: 300k, Rf/Q: 47k//750k, RfxQ: 47k//620k

RGP: 36k//510k, RGH · RGP: OPEN
RfM: 9.1k, Rf/Q: 18k, RfxQ: 12k

RGH: 62k//220k, RGL · RGP: OPEN
RfM: 300k, Rf/Q: 18k, RfxQ: 12k

RGP: 36k//110k, RGL · RGH: OPEN
RfM: 300k, Rf/Q: 47k//750k, RfxQ: 47k//620k

Pins 8 and 17 (CXA1598M)
Pins 7 and 16 (CXA1598S)

0.5

0.8

2.0

0.5

0.8

2.0

Peaking Q deviation

GL low frequency gain deviation

GH medium frequency gain
deviation

GP peaking gain deviation

Input impedance

Recording equalizer amplifier

Note: Unless otherwise specified, RGL, RGH, RGP, RfM, Rf/Q, and RfxQ settings are the characteristics

when set to the standard settings.

Item

Conditions

Min.

Typ.

Max. Unit

CXA1598M/S

Electrical Characteristics Measurement Circuit (CXA1598S)

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CXA1598M/S

Electrical Characteristics Measurement Circuit (CXA1598M)

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CXA1598M/S

Application Circuit for Positive/Negative Dual Power Supplies (CXA1598S)

.
3

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Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility fo

any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same

CXA1598M/S

Application Circuit for Positive/Negative Dual Power Supplies (CXA1598M)

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3

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Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility fo

any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same

CXA1598M/S

Application Circuit for a Single Power Supply (CXA1598S)

.
3

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Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility fo

any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same

CXA1598M/S

Application Circuit for a Single Power Supply (CXA1598M)

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3

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Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility fo

any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same

CXA1598M/S

Description of Operation

1. Recording equalizer amplifier

The primary features of the CXA1598 recording equalizer amplifier are that by taking full advantage of

monolithic filter technology, an LC resonance circuit consisting of a coil and capacitor normally required for

high frequency compensation is dispensed with and medium and low frequency sensitivity compensation is

performed with its internal filter alone. In addition, the six parameters (low frequency gain, medium frequency

gain, peaking gain, medium frequency compensation frequency, peaking frequency, and Q) required for

recording equalizer amplifiers can be set as desired simply by attaching resistors to the GL, GH, GP, fM, f/Q,

and fxQ pins.

This IC has the circuit configuration shown in Fig. 1 to provide the optimum frequency response required for

recording equalizer amplifiers.

27mH

GND

R10

50k

Gm2

Gm1

Gm4

OP3

OP2

OP1

VGS

R14

34k

R12

35k

R15
4.8k

0.47µ

GND

200p

R13
5.5k

R20

40k

GND

R21

50k

R19

24k

R18

100p

GND

100p

R16

20k

R17

20k

VGS

Gm3

VGS

BIAS

PARAMETER

6dBv

+6dBv

3dBv

7dBv

0dBv

REC IN
18dBv

GND

IREF

DGND

R9 27k

GND

REC HEAD

BIAS

OSC

75p

R23

12k

3.3µ

C7
150p

CONTROL

REC MUTE

R24

50k

BOOST

GND

8.2k

10k

2.2µ

f/Q

DGND

R3 Rf

R4 Rf/Q

R5 RfM

R6 RGP

R7 RGH

R8 RGL

GP CAL

CALIBRATION

FP CAL

GH CAL

REC CAL

REC OUT

GND

DGND

R25

50k

to Control IC

R26

50k

R22

50k

R11

BOOST

From LINE IN

DGND

Fig. 1. CXA1598M/S functional circuit block diagram

2. Low frequency boost

The CXA1598 implements low frequency boost simply by attaching an external capacitor to the BOOST pins.

Signals are boosted by approximately 6dB. The boost cut-off frequency can be freely set with the value of the

external capacitor.

i
n

[
d

]

Frequency [Hz]

6dB

oct

Fig. 2. CXA1598M/S low frequency boost frequency response

CXA1598M/S

3. Recording mute function

The CXA1598 contains a built-in recording mute circuit which varies the recording equalizer amplifier gain

according to the magnitude of the DC voltage applied to the REC MUTE pin just like an electronic volume

control. Also, any desired soft mute or fader can be freely set depending on momentary changes in the DC

voltage applied to the REC MUTE pin. Fig. 3 illustrates the recording mute waveforms.

Fig. 3. Recording mute waveform

4. Recording level calibration function

The CXA1598 allows the recording level to be finely adjusted with a DC voltage. The recording equalizer

amplifier gain can be varied by approximately ±5dB simply by applying a DC voltage to the REC CAL pin.

When not using the recording level calibration function, simply leave the REC CAL pin open, and the REC

CAL pin is matched to the internal reference voltage (2.5V), with the recording level set for the standard

output gain.

5. Medium frequency equalizer amplifier calibration function

The CXA1598 allows the medium frequency equalizer amplifier characteristics to be finely adjusted with a DC

voltage. By simply applying a DC voltage to the GH CAL pin, the medium frequency equalizer amplifier gain

can be varied by approximately ±4dB. When not using this calibration function, simply leave the GH CAL pin

open, and the GH CAL pin is matched to the internal reference voltage (2.5V), with the medium frequency

equalizer amplifier characteristics set for the standard output gain.

6. High frequency equalizer amplifier calibration function

The CXA1598 allows the high frequency equalizer amplifier characteristics to be finely adjusted with a DC

voltage. By simply applying a DC voltage to the GP CAL pin, the high frequency equalizer amplifier gain can

be varied by approximately ±4dB. Also, when not using this calibration function, simply leave the GP CAL pin

open, and the GP CAL pin is matched to the internal reference voltage (2.5V), with the high frequency

equalizer amplifier characteristics set for the standard output gain.

7. fp peaking frequency calibration function

The CXA1598 allows the fp peaking frequency to be finely adjusted with a DC voltage. By simply applying a

DC voltage to the FP CAL pin, the fp peaking frequency can be varied by approximately 46% to 200%. Also,

when not using this calibration function, simply leave the FP CAL pin open, and the FP CAL pin is matched to

the internal reference voltage (2.5V), with the fp peaking frequency response set for the standard fp peaking

frequency.

CXA1598M/S

FP CAL

REC CAL

i
n

[
d

]

Frequency [Hz]

REC CAL

GP CAL

REC CAL

GH CAL

Fig. 4. Conceptual diagram of recording level/medium frequency

equalizer amplifier/high frequency equalizer amplifier/fp

peaking frequency calibration functions

Control Voltage for Each Control Pin

NO.

Pin Name

Pin voltage [V], referenced to DGND

0.0

0.5

2.5

4.5

5.0

Reduce < < < < < < < < Increase

200

Reduce < < < < < < < < Increase

100

4.5

Reduce < < < < < < < < Increase

6.5

6.0

Reduce < < < < < < < < Increase

4.5

5.7

Reduce < < < < < < < < Increase

4.2

5.4

Remarks

(4)

(6)

(19)

(20)

(21)

FP CAL

REC MUTE

REC CAL

GH CAL

GP CAL

Amount of fp peaking frequency change
[%] compared to when FP CAL is at the
standard setting.

REC OUT attenuation [dB] compared to
when REC MUTE is at the standard
setting. f = 1kHz

Amount of change [dB] compared to when
REC CAL is at the standard setting.
f = 315Hz

Amount of GH medium frequency gain
change [dB] compared to RGH standard.
RGL, RGP: OPEN

Amount of GP peaking frequency gain
change [dB] compared to RGP standard.
RGL, RGH: OPEN

CXA1598M/S

R44

27k

CXA1598S

GND

f
M

f
/
Q

I
R

R30

R29

R28

R27

R26

R24

R23

R22

R21

R20

R17

R16

R15

R14

R13

R11

R10

R18

R12

R25

R19

R36

R35

R34

R33

R32

R31

f/Q

INH

COM

SPEED

HIGH/NORM

TYPE

70µs/120µs

R44

27k

CXA1598S

GND

f
M

f
/
Q

I
R

R30

R29

R28

R27

R26

R24

R23

R22

R21

R20

R17

R16

R15

R14

R13

R11

R10

R18

R12

R25

R19

R36

R35

R34

R33

R32

R31

f/Q

INH

COM

SPEED

HIGH/NORM

TYPE

70µs/120µs

8. Mode control methods

Refer to the application circuits shown in Figs. 5 and 6 for mode control methods using a manual switch.
When tape mode is implemented with logic, use the same ground for the 27k

resistance connected to the

common pin (analog switch connection) of the used analog switch IC and to the DGND and IREF pins.
Figs. 5 and 6 show examples when using the 4051B (8-channel multiplexer/demultiplexer).

Fig. 5. For positive/negative dual power supplies

Fig. 6. For a single power supply

9. Temperature characteristics and accuracy of the recording equalizer amplifier

The temperature and cut-off frequency of the CXA1598 depend on the external resistance connected to the
IREF, GL, GH, GP, fM, f/Q, and fxQ pins. For low frequency boost, however, the cut-off frequency becomes
uneven depending on the temperature characteristics or unevenness of the internal resistance since its time
constant is configured by the product of an external capacitor and the internal resistance.
Also, the recording equalizer amplifier frequency response depends on unevenness in the absolute, as well
as relative values of the internal capacitance. Furthermore, the high frequency response indicates a high
element sensitivity at the filter because the band-pass filter Q is high. Compared to low frequency, although
the unevenness inherent in the IC is more likely to occur, this occurs relatively, and not individually for
channels 1 and 2.

CXA1598M/S

14pin (13pin)

11pin (10pin)

GND 9pin (8pin)

Positive/negative
dual power supplies

Single power supply

Positive power supply

Power supply

Negative power supply

GND

DGND 5pin (5pin)

GND

Notes on Operation

1. Power supply

The CXA1598 is designed basically for positive/negative dual power supplies, and can also operate with a

single power supply. Connect the power supplies for each case as shown below:

Pin Nos. in parentheses are those for the CXA1598S.

For a single power supply, connect a decoupling capacitor (10µF or more) to the GND (VG) pin. The ripple

rejection ratio depends on the capacitance of this capacitor.

2. Low frequency boost

The CXA1598 can implement low frequency boost simply by connecting a capacitor to the BOOST pins.

Although the boost is fixed to 6dB, the time constant which determines the cut-off frequency can be set to

any desired value depending on the external capacitor. The pole (f

) and zero (f

) shown in Fig. 3. Low

frequency boost frequency response can be expressed, with the external capacitor assumed to be C

, as

follows:

= = [Hz]

When not using low frequency boost, follow the procedure described below.

For positive/negative dual power supplies

Connect the BOOST pins to GND.

For single power supply

Connect a fairly large capacitor (3.3µF or more) to the BOOST pins or simply leave the BOOST pins open. If

the BOOST pins are left open, note that the output level increases by 6dB, so the input level should be set

6dB down. The CXA1598 is basically designed for positive/negative dual power supplies and the BOOST

pins cannot be easily connected to GND as in the case of positive/negative dual power supplies.

3. Resistance connected to the IREF pin as well as the GL, GH, GP, fM, f/Q, and fxQ pins

The recording equalizer amplifier frequency response is determined by the resistance connected to the IREF

pin as well as the GL, GH, GP, fM, f/Q, and fxQ pins. This means that the accuracy of the recording equalizer

amplifier frequency response is determined by the resistance connected to these pins. Therefore, the

resistors used for this purpose must be free of unevenness and have excellent temperature characteristics

(e.g., a metallic film resistor).

R13 + R14

· C

· (R13 · R14 + R14 · R15 + R15 · R13)

· C

· (R13 · R14 / (R13 + R14) + R15)

· C

· (9.53k

)

· C

· (4.8k

)

· C

· R15

CXA1598M/S

, V

= ±7V

RGL OPEN
RfM 300k
Rf/Q 47k//750k
Rf

Q 47k//620k

0dB = 315Hz,
23dBv (20dB)
RGH OPEN
RGH 31.5k

RGL gain characteristics

RGL [

]

[
d

]

10k

100k

, V

= ±7V

RGH OPEN
RGP OPEN
RfM 9.1k
Rf/Q 18k
Rf

Q 12k

0dB = 315Hz,
23dBv (20dB)
f = 1kHz

RGH gain characteristics

RGH [

]

[
d

]

10k

100k

, V

= ±7V

RGH OPEN
RGP OPEN
RfM 300k
Rf/Q 18k
Rf

Q 12k

0dB = 315Hz,
23dBv (20dB)
f = 1kHz

RGP gain characteristics

RGP [

]

[
d

]

10k

100k

RfM cut-off frequency characteristics

RfM [

]

f
M

[
H

]

100

100k

10k

100k

, V

= ±7V

RGL 36k//510k
RGH OPEN
RGP OPEN
Rf/Q 18k
Rf

Q 12k

RfxQ cut-off frequency characteristics

Q [

]

[
H

]

100k

10k

100k

Rf/Q cut-off frequency characteristics

Rf/Q [

]

f
/
Q

[
H

]

100

100k

10k

100k

, V

= ±7V

RGL OPEN
RGH OPEN
RGP 36k//110k
RfM 300k
Rf

Q 37.4k

, V

= ±7V

RGL OPEN
RGH OPEN
RGP 36k//110k
RfM 300k
Rf/Q 38.6k

Example of Representative Characteristics

CXA1598M/S

Output level vs. Mute characteristics 1

REC MUTE pin voltage [V]

0.0

t
p

t

l
e

l

[
%

]

, V

= ±7V

RGL 36k//510k
RGH 62k//220k
RGP 36k//110k
RfM 39k//910k
Rf/Q 47k//750k
Rf

Q 47k//620k

100% = 1kHz, +12dB
(at 315Hz, 3dBv)
f = 1kHz

1.0

2.0

3.0

4.0

5.0

6.0

7.0

100

Output level vs. Mute characteristics 2

REC MUTE pin voltage [V]

0.0

t
p

t

l
e

l

[
d

]

100

, V

= ±7V

RGL 36k//510k
RGH 62k//220k
RGP 36k//110k
RfM 39k//910k
Rf/Q 47k//750k
Rf

Q 47k//620k

0dB = 1kHz, +12dB
(at 315Hz, 3dBv)
f = 1kHz

1.0

2.0

3.0

4.0

5.0

6.0

7.0

Output level vs. Mute characteristics 3

REC MUTE pin voltage [V]

t
p

t

l
e

l

[
d

]

, V

= ±7V

RGL 36k//510k
RGH 62k//220k
RGP 36k//110k
RfM 39k//910k
Rf/Q 47k//750k
Rf

Q 47k//620k

0dB = 1kHz, +12dB
(at 315Hz, 3dBv)
f = 1kHz

0.5

1.0

5.0

10.0

Current consumption vs. Supply voltage

Positive/negative
dual power supplies
RGL 36k//510k
RGH 62k//220k
RGP 36k//110k
RfM 39k//910k
Rf/Q 47k//750k
Rf

Q 47k//620k

Supply voltage [V]

/
I

[
m

]

CXA1598M/S

Total harmonic distortion

Output level [dB]

.

H

.

D

[
%

]

1.0

0.1

, V

= ±7V

RGL 36k//510k
RGH 62k//220k
RGP 36k//110k
RfM 39k//910k
Rf/Q 47k//750k
Rf

Q 47k//620k

0dB = 3dBv
RL = 2.7k

315Hz

1kHz
3kHz

6.3kHz

10kHz
15kHz

Load characteristics

i
m

t
p

t

l
e

l

[
d

]

load resistance [

]

100

10k

Output level vs. REC CAL voltage

REC CAL pin voltage [V]

t
p

t

l
e

l

[
d

]

, V

= ±7V

RGL 36k//510k
RGH 62k//220k
RGP 36k//110k
RfM 39k//910k
Rf/Q 47k//750k
Rf

Q 47k//620k

0dB = REC CAL pin 2.5V,
20dB
(at 315Hz, 3dBv)

2.0

1.0

4.0

7.0

1.0

0.0

2.0

3.0

5.0

6.0

, V

= ±7V

RGL 36k//510k
RGH 62k//220k
RGP 36k//110k
RfM 39k//910k
Rf/Q 47k//750k
Rf

Q 47k//620k

0dB = 3dBv
THD + N = 1%

315Hz

1kHz

315Hz

8kHz

CXA1598M/S

Output level vs. GH CAL voltage

GH CAL pin voltage [V]

t
p

t

l
e

l

[
d

]

2.0

1.0

4.0

7.0

1.0

0.0

2.0

3.0

5.0

6.0

Output level vs. GP CAL voltage

Gp CAL pin voltage [V]

t
p

t

l
e

l

[
d

]

3kHz
8kHz

12kHz

Setting 1
RGL 36k//510k
RGH 62k//220k
RGP 36k//110k
RfM 39k//910k
Rf/Q 47k//750k
Rf

Q 47k//620k

0dB = Gp CAL pin 2.5V,
20dB
(at 315Hz, 3dBv)

Setting 2
RGL OPEN
RGH OPEN
RGP 36k//110k
RfM 300k
Rf/Q 47k//750k
Rf

Q 47k//620k

fp peaking frequency vs. FP CAL pin voltage

FP CAL pin voltage [V]

f
p

i
n

f
r
e

r
i
a

t
i
o

r
a

t
i
o

[
%

]

140

220

100

180

, V

= ±7V

fp peaking frequency 100%
when FP CAL pin is 2.5V
RGL OPEN
RGH OPEN
RGP 36k//110k
RfM 300k
Rf/Q 47k//750k
Rf

Q 47k//620k

2.0

1.0

4.0

7.0

1.0

0.0

2.0

3.0

5.0

6.0

2.0

1.0

4.0

7.0

1.0

0.0

2.0

3.0

5.0

6.0

Setting 1

Setting 2

, V

= ±7V

Setting 1
RGL 36k//510k
RGH 62k//220k
RGP 36k//110k
RfM 39k//910k
Rf/Q 47k//750k
Rf

Q 47k//620k

0dB = GH CAL pin 2.5V,
20dB
(at 315Hz, 3dBv)

Setting 2
RGL OPEN
RGH 62k//220k
RGP OPEN
RfM 300k
Rf/Q 18k
Rf

Q 12k

, V

= ±7V

Setting 1

Setting 2

3kHz
8kHz

12kHz

3kHz

CXA1598M/S

REC CAL and GH CAL frequency response

Frequency [Hz]

t
p

t

r
e

[
d

]

100k

, V

= ±7V

0dB = 315Hz, 23dBv (20dB), REC CAL,
GH CAL, GP CAL, FP CAL = 2.5V

10k

100

5.0V

f1
f2
f3

2.5V

f4
f5
f6

0.0V

f7
f8
f9

5.0V
2.5V
0.0V

REC CAL

GH CAL

REC CAL and GP CAL frequency response

Frequency [Hz]

t
p

t

r
e

[
d

]

100k

, V

= ±7V

0dB = 315Hz, 23dBv (20dB), REC CAL,
GH CAL, GP CAL, FP CAL = 2.5V

10k

100

5.0V

f1
f2
f3

2.5V

f4
f5
f6

0.0V

f7
f8
f9

5.0V
2.5V
0.0V

REC CAL

GP CAL

REC CAL and FP CAL frequency response

Frequency [Hz]

t
p

t

r
e

[
d

]

100k

10k

100

5.0V

f1
f2
f3

2.5V

f4
f5
f6

0.0V

f7
f8
f9

5.0V
2.5V
0.0V

REC CAL

FP CAL

, V

= ±7V

0dB = 315Hz, 23dBv (20dB), REC CAL,
GH CAL, GP CAL, FP CAL = 2.5V

CXA1598M/S

Package Outline

Unit: mm

CXA1598M

CXA1598S

SONY CODE

EIAJ CODE

JEDEC CODE

PACKAGE STRUCTURE

MOLDING COMPOUND

LEAD TREATMENT

LEAD MATERIAL

PACKAGE WEIGHT

EPOXY/PHENOL RESIN

SOLDER PLATING

COPPER ALLOY / 42ALLOY

24PIN SOP (PLASTIC)

15.0 0.1

+ 0.4

1.27

0.45 ± 0.1

.
3

.
1

.
3

.
9

.
4

0.2 0.05

+ 0.1

.
5

.
2

0.1 0.05

+ 0.2

0.15

1.85 0.15

+ 0.4

.
9

± 0.12

SOP-24P-L01

SOP024-P-0300-A

0.3g

SONY CODE

EIAJ CODE

JEDEC CODE

PACKAGE STRUCTURE

MOLDING COMPOUND

LEAD TREATMENT

LEAD MATERIAL

PACKAGE WEIGHT

EPOXY RESIN

SOLDER PLATING

COPPER ALLOY

22PIN SDIP (PLASTIC)

SDIP-22P-01

SDIP022-P-0300

0.95g

1.778

19.2 0.1

+ 0.4

.
6

.
4

.
1

.
3

.
2

.
0

.
1

0° to 15°

0.5 ± 0.1

0.9 0.1

+ 0.15

.
2

.
1

.
5

I
N

.
9

.
1

.
4

Ð­Ð»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: CXA1598M

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: CXA1598M