DATA SHEET
Product specification
File under Integrated Circuits, IC01
May 1992
INTEGRATED CIRCUITS
TDA1526
Stereo-tone/volume control circuit
May 1992
2
Philips Semiconductors
Product specification
Stereo-tone/volume control circuit
TDA1526
GENERAL DESCRIPTION
The device is designed as an active stereo-tone/volume
control for car radios, TV receivers and mains-fed
equipment. It includes functions for bass and treble
control, volume control with built-in contour (can be
switched off) and balance. All these functions can be
controlled by DC voltages or by single linear
potentiometers.
Features
Few external components necessary
Low noise due to internal gain
Bass emphasis can be increased by a double-pole
low-pass filter
Wide power supply voltage range.
QUICK REFERENCE DATA
For explanation of notes see Notes to the characteristics.
PACKAGE OUTLINE: 18-lead DIL; plastic (SOT102); SOT102-1; 1996 August 06.
PARAMETER
CONDITIONS
SYMBOL
MIN.
TYP.
MAX.
UNIT
Supply voltage (pin 3)
V
P
7.5
12
16.5
V
Supply current (pin 3)
V
P
= 12 V
I
P
25
35
45
mA
Signal handling with DC feedback
V
P
= 8.5 to 15 V;
THD = 0.7%; f = 1 kHz
Input signal handling (RMS value)
V
i
(rms)
1.8
2.0
-
V
Output signal handling (RMS value)
notes 2 and 3
V
o(rms)
1.8
2.0
-
V
Control range
Maximum gain of volume
see Fig.4
G
v max
20.5
21.5
23
dB
Volume control range
G
v max
/G
v min
G
v
90
100
-
dB
Balance control range
G
v
= 0 dB; see Fig.5
G
v
-
-
40
-
dB
Bass control range
at 40 Hz; see Fig.6
G
v
-
-
19 to
-
dB
+
17
3
Treble control range
at 16 kHz; see Fig.7
G
v
-
15
3
-
dB
Total harmonic distortion
THD
-
-
0.5
%
Noise performance
V
P
= 12 V
Output noise voltage (unweighted)
at f = 20 Hz to 20 kHz
RMS value; note 4
for G
v
=
-
16 dB
note 5
V
no(rms)
-
100
200
V
Signal processing
Channel separation
at G
v
=
-
20 to 21.5 dB
f = 250 Hz to 10 kHz
cs
46
60
-
dB
Tracking between channels
f = 250 Hz to 6.3 kHz;
balance at G
v
= 10 dB
for G
v
= 21.5 to
-
26 dB
G
v
-
-
2.5
dB
Ripple rejection
V
P(rms)
=
200 mV;
f = 100 Hz; G
v
= 0 dB
RR
35
50
-
dB
Operating ambient temperature range
T
amb
-
30
-
+
85
C
May 1992
3
Philips Semiconductors
Product specification
Stereo-tone/volume control circuit
TDA1526
Fig.1 Block diagram and application circuit with single-pole filter.
(1) Series resistor is recommended in the event of the capacitive loads exceeding 200 pF.
May 1992
4
Philips Semiconductors
Product specification
Stereo-tone/volume control circuit
TDA1526
RATINGS
Limiting values in accordance with the Absolute Maximum System (IEC 134)
PARAMETER
SYMBOL
MIN.
MAX.
UNIT
Supply voltage (pin 3)
V
P
-
20
V
Total power dissipation
P
tot
-
1200
mW
Storage temperature range
T
stg
-
55
+
150
C
Operating ambient temperature range
T
amb
-
30
+
80
C
Fig.2 Double-pole low-pass filter for improved bass-boost.
May 1992
5
Philips Semiconductors
Product specification
Stereo-tone/volume control circuit
TDA1526
DC CHARACTERISTICS
V
P
= V
3-18
= 12 V; T
amb
= 25
C; measured in Fig.1; R
G
600
; R
L
4.7 k
; C
L
200 pF; unless otherwise specified
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
Supply (pin 3)
Supply voltage
V
P
= V
3-18
7.5
-
16.5
V
Supply current
at V
P
= 8.5 V
I
P
= I
3
19
27
35
mA
at V
P
= 12 V
I
P
= I
3
25
35
45
mA
at V
P
= 15 V
I
P
= I
3
30
43
56
mA
DC input levels (pins 4 and 15)
at V
P
= 8.5 V
V
4, 15-18
3.8
4.25
4.7
V
at V
P
= 12 V
V
4, 15-18
5.3
5.9
6.6
V
at V
P
= 15 V
V
4, 15-18
6.5
7.3
8.2
V
DC output levels (pins 8 and 11)
under all control voltage conditions
with DC feedback
at V
P
= 8.5 V
V
8, 11-18
3.3
4.25
5.2
V
at V
P
= 12 V
V
8, 11-18
4.6
6.0
7.4
V
at V
P
= 15 V
V
8, 11-18
5.7
7.5
9.3
V
Pin 17
Internal potentiometer supply voltage
at V
P
= 8.5 V
V
17-18
3.5
3.75
4.0
V
Contour on/off switch (control by I
17
)
contour (switch open)
-
I
17
-
-
0.5
mA
linear (switch closed)
-
I
17
1.5
-
10
mA
Application without internal potentiometer
supply voltage at V
P
10.8 V
(contour cannot be switched off)
Voltage range forced to pin 17
V
17-18
4.5
-
V
P
/2
-
V
BE
V
DC control voltage range for volume,
bass, treble and balance
(pins 1, 9, 10 and 16 respectively)
at V
17-18
= 5 V
V
1,9,10,16
1.0
-
4.25
V
using internal supply
V
1,9,10,16
0.25
-
3.8
V
Input current of control inputs
(pins 1, 9, 10 and 16)
-
I
1,9,10,16
-
-
5
A
May 1992
6
Philips Semiconductors
Product specification
Stereo-tone/volume control circuit
TDA1526
AC CHARACTERISTICS
V
P
= V
3-18
= 8.5 V; T
amb
= 25
C; measured in Fig.1; contour switch closed (linear position); volume, balance, bass, and
treble controls in mid-position; R
G
600
; R
L
4.7 k
; C
L
200 pF; f = 1 kHz; unless otherwise specified
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
Control range
Maximum gain of volume (Fig.4)
G
v max
20.5
21.5
23
dB
Volume control range; G
v max
/G
v min
G
v
90
100
-
dB
Balance control range; G
v
= 0 dB (Fig.5)
G
v
-
-
40
-
dB
Bass control range at 40 Hz (Fig.6)
G
v
-
-
19 to
+
17
3
dB
Treble control range at 16 kHz (Fig.7)
G
v
-
15
3
-
dB
Contour characteristics
see Figs 9 and 10
Signal inputs, outputs
Input resistance; pins 4 and 15 (note 1)
at gain of volume control: G
v
= 20 dB
R
i4, 15
10
-
-
k
G
v
=
-
40 dB
R
i4, 15
-
160
-
k
Output resistance (pins 8 and 11)
R
o8, 11
-
-
300
Signal processing
Power supply ripple rejection
at V
P(rms)
200 mV; f = 100 Hz; G
v
= 0 dB
RR
35
50
-
dB
Channel separation (250 Hz to 10 kHz)
at G
v
=
-
20 to
+
21.5 dB
cs
46
60
-
dB
Spread of volume control with
constant control voltage V
1-18
= 0.5 V
17-18
G
v
-
-
3
dB
Gain tolerance between left and right
channel V
16-18
= V
1-18
= 0.5 V
17-18
G
v, L-R
-
-
1.5
dB
Tracking between channels
for G
v
= 21.5 to
-
26 dB
f = 250 Hz to 6.3 kHz; balance adjusted at
G
v
= 10 dB
G
v
-
-
2.5
dB
Signal handling with DC feedback
Input signal handling
at V
P
= 8.5 V
-
15 V; THD = 0.7%;
f = 1 kHz (RMS value)
V
i(rms
)
1.8
2.0
-
V
Output signal handling (note 2 and note 3)
at V
P
= 8.5 V; THD = 0.7%;
f = 1 kHz (RMS value)
V
o(rms
)
1.8
2.0
-
V
Noise performance (V
P
= 12 V)
Output noise voltage (unweighted; Fig.14)
at f = 20 Hz to 20 kHz (RMS value; note 4)
for G
v
=
-
16 dB (note 5)
V
no(rms
)
-
100
200
V
May 1992
7
Philips Semiconductors
Product specification
Stereo-tone/volume control circuit
TDA1526
Notes to the characteristics
1. Equation for input resistance (see also Fig.3)
2. Frequencies below 200 Hz and above 5 kHz have reduced voltage swing, the reduction at 40 Hz and 16 kHz is 30%.
3. In the event of bass boosting the output signal handling is reduced. The reduction is 1 dB for maximum bass boost.
4. For peak values add 4.5 dB to RMS values.
5. Linear frequency response.
R
i
160 k
1
G
v
+
--------------------
G
v max
12.
=
;
=
Fig.3 Input resistance (R
i
) as a function of gain of volume control (G
v
). Measured in Fig.1.
May 1992
8
Philips Semiconductors
Product specification
Stereo-tone/volume control circuit
TDA1526
Fig.4
Volume control curve; voltage gain (G
v
) as
a function of control voltage (V
1-18
).
Measured in Fig.1 (internal potentiometer
supply from pin 17 used); V
P
= 8.5 V;
f = 1 kHz.
Fig.5
Balance control curve; voltage gain (G
v
) as
a function of control voltage (V
16-18
).
Measured in Fig.1 (internal potentiometer
supply from pin 17 used); V
P
= 8.5 V.
Fig.6
Bass control curve; voltage gain (G
v
) as a
function of control voltage (V
9-18
).
Measured in Fig.1 with single-pole filter
(internal potentiometer supply from pin 17
used); V
P
= 8.5 V; f = 40 Hz.
Fig.7
Treble control curve; voltage gain (G
v
) as a
function of control voltage (V
10-18
).
Measured in Fig.1 (internal potentiometer
supply from pin 17 used); V
P
= 8.5 V;
f = 16 kHz.
May 1992
9
Philips Semiconductors
Product specification
Stereo-tone/volume control circuit
TDA1526
Fig.8
Contour frequency response curves; voltage gain (G
v
) as a function of audio input frequency.
Measured in Fig.1 with single-pole filter; V
P
= 8.5 V.
Fig.9
Contour frequency response curves; voltage gain (G
v
) as a function of audio input frequency.
Measured in Fig.1 with double-pole filter; V
P
= 8.5 V.
May 1992
10
Philips Semiconductors
Product specification
Stereo-tone/volume control circuit
TDA1526
Fig.10 Tone control frequency response curves; voltage gain (G
v
) as a function of audio input frequency.
Measured in Fig.1 with single-pole filter; V
P
= 8.5 V.
Fig.11 Tone control frequency response curves; voltage gain (G
v
) as a function of audio input frequency.
Measured in Fig.1 with double-pole filter; V
P
= 8.5 V.
May 1992
11
Philips Semiconductors
Product specification
Stereo-tone/volume control circuit
TDA1526
Fig.12 Total harmonic distortion (THD); as a function of audio input frequency.
Measured in Fig.1; V
P
= 8.5 V; volume control voltage gain at
G
v
20
V
o
V
i
--------
0dB
=
log
=
Fig.13 Total harmonic distortion (THD); as a function of output voltage (V
o
).
Measured in Fig.1; V
P
= 8.5 V; f
i
= 1 kHz.
May 1992
12
Philips Semiconductors
Product specification
Stereo-tone/volume control circuit
TDA1526
Fig.14 Noise output voltage (V
no(rms)
; unweighted); as a function of voltage gain (G
v
).
Measured in Fig.1; V
P
= 15 V; f = 20 Hz to 20 kHz.
May 1992
13
Philips Semiconductors
Product specification
Stereo-tone/volume control circuit
TDA1526
PACKAGE OUTLINE
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC
JEDEC
EIAJ
SOT102-1
93-10-14
95-01-23
UNIT
A
max.
1
2
b
1
(1)
(1)
(1)
b
2
c
D
E
e
M
Z
H
L
mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
A
min.
A
max.
b
max.
w
M
E
e
1
1.40
1.14
0.53
0.38
0.32
0.23
21.8
21.4
6.48
6.20
3.9
3.4
0.254
2.54
7.62
8.25
7.80
9.5
8.3
0.85
4.7
0.51
3.7
inches
0.055
0.044
0.021
0.015
0.013
0.009
1.40
1.14
0.055
0.044
0.86
0.84
0.26
0.24
0.15
0.13
0.01
0.10
0.30
0.32
0.31
0.37
0.33
0.033
0.19
0.020
0.15
M
H
c
(e )
1
M
E
A
L
seating plane
A
1
w
M
b
1
b
2
e
D
A
2
Z
18
1
10
9
b
E
pin 1 index
0
5
10 mm
scale
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
DIP18: plastic dual in-line package; 18 leads (300 mil)
SOT102-1
May 1992
14
Philips Semiconductors
Product specification
Stereo-tone/volume control circuit
TDA1526
SOLDERING
Introduction
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our
"IC Package Databook" (order code 9398 652 90011).
Soldering by dipping or by wave
The maximum permissible temperature of the solder is
260
C; solder at this temperature must not be in contact
with the joint for more than 5 seconds. The total contact
time of successive solder waves must not exceed
5 seconds.
The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (T
stg max
). If the
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.
Repairing soldered joints
Apply a low voltage soldering iron (less than 24 V) to the
lead(s) of the package, below the seating plane or not
more than 2 mm above it. If the temperature of the
soldering iron bit is less than 300
C it may remain in
contact for up to 10 seconds. If the bit temperature is
between 300 and 400
C, contact may be up to 5 seconds.
DEFINITIONS
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
Data sheet status
Objective specification
This data sheet contains target or goal specifications for product development.
Preliminary specification
This data sheet contains preliminary data; supplementary data may be published later.
Product specification
This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
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