DATA SHEET
Product specification
File under Integrated Circuits, IC01
May 1994
INTEGRATED CIRCUITS
TDA1599
IF amplifier/demodulator for FM
radio receivers
May 1994
2
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
FEATURES
Balanced limiting amplifier
Balanced coincidence demodulator
Two open-collector stop pulse outputs for
microcomputer tuning control
Simulated behaviour of a ratio detector (internal field
strength and detuning dependent voltage for dynamic
AF signal muting)
Mono/stereo blend field strength indication control
voltage
AFC output
3-state mode switch for FM-MUTE-ON, FM-MUTE-OFF
and FM-OFF
Internal compensation of AF signal total harmonic
distortion (THD)
Built-in hum and ripple rejection circuits.
GENERAL DESCRIPTION
The TDA1599 provides IF amplification, symmetrical
quadrature demodulation and level detection for quality
home and car FM radio receivers and is suitable for mono
and stereo reception. It may also be applied to common
front ends, stereo decoders and AM receiver circuits.
QUICK REFERENCE DATA
All pin numbers mentioned in this data sheet refer to the SO-version (TDA1599T) unless otherwise specified.
ORDERING INFORMATION
Notes
1. SOT102-1; 1996 August 29.
2. SOT163-1; 1996 August 29.
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
V
P
positive supply voltage (pin 1)
7.5
8.5
12
V
I
P
supply current (I
2
= I
7
= 0)
-
20
26
mA
V
i
IF input sensitivity for limiting on pin 20 (RMS value)
14
22
35
V
V
o
AF output signal on pin 4 (RMS value)
180
200
220
mV
S/N
signal-to-noise ratio (f
m
= 400 Hz;
f =
75 kHz)
-
82
-
dB
THD
total harmonic distortion (f
m
= 1 kHz;
f =
75 kHz)
-
0.1
0.3
%
with K2 adjustment and FM-MUTE-OFF
-
0.07
0.25
%
T
amb
operating ambient temperature
-
40
-
+85
C
EXTENDED
TYPE NUMBER
PACKAGE
PINS
PIN POSITION
MATERIAL
CODE
TDA1599
18
DIL
plastic
SOT102
(1)
TDA1599T
20
mini-pack
plastic
SOT163A
(2)
May 1994
3
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
(1)
to connect pin 13 (11) to ground is only allowed to measure the current on pin 16 (14)
(2)
FM-MUTE-OFF
(3)
FM-OFF
(4)
FM-MUTE-ON
Fig.1 Block diagram and application circuit (TDA1599 pinning in parenthesis).
May 1994
4
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
PINNING; note 1
Note
1. SO-version TDA1599T; pinning for DIL-version in parenthesis.
SYMBOL
PIN
DESCRIPTION
V
P
1 (1)
supply voltage (+8.5 V)
LVA
2 (2)
level adjustment for stop condition
ULV
3 (3)
unweighted level output / K2 adjustment
V
oAF
4 (4)
audio frequency output (MPX signal)
V
REF
5 (5)
reference voltage output
WLV
6 (6)
weighted level output
MODE
7 (7)
mode switch input
DDV
8 (8)
detune detector voltage
n.c.
9 (
-
)
not connected
DEMI1
10 (9)
demodulator input 1
DEMI2
11 (10)
demodulator input 2
n.c.
12 (
-
)
not connected
TSW
13 (11)
tau switch input
ST1
14 (12)
STOP-1, stop pulse output 1
ST0
15 (13)
STOP-0, stop pulse output 0
MUTE
16 (14)
muting voltage
GND
17 (15)
ground (0 V)
LFB1
18 (16)
IF limiter feedback 1
LFB2
19 (17)
IF limiter feedback 2
V
iIF
20 (18)
IF signal input
Fig.2 Pin configuration for DIL-version.
Fig.3 Pin configuration for SO-version.
May 1994
5
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
FUNCTIONAL DESCRIPTION
The limiter amplifier has five stages of IF amplification
using balanced differential limiter amplifiers with emitter
follower coupling.
Decoupling of the stages from the supply voltage line and
an internal high-ohmic DC feedback loop give a very stable
IF performance. The amplifier gain is virtually independent
of changes in temperature.
The FM demodulator is fully balanced and compromises
two cross-coupled differential amplifiers. The quadrature
detection of the FM signal is performed by direct feeding of
one differential amplifier from the limiter amplifier output,
and the other via an external 90 degrees phase shifting
network. The demodulator has a good stability and a small
zero-cross-over shift. The bandwidth on the demodulator
output is restricted by an internal low-pass filter to
approximately 1 MHz.
Non-linearities, which are introduced by demodulation, are
compensated by the THD compensation circuit. For this
reason, the demodulator resonance circuit (between pins
10 and 11) must have a loaded Q-factor of 19.
Consequently, there is no need for the demodulator tuned
circuit to be adjusted for minimum distortion. Adjustment
criterion is a symmetrical stop pulse. The control voltage
for the mute attenuator (pin 16) is derived from the values
of the level detector and the detuning detector output
signals. The mute attenuator has a fast attack and a slow
decay determined by the capacitor on pin 16. The AF
signal is fed via the mute attenuator to the output (pin 4). A
weighted control voltage (pin 6) is obtained from the mute
attenuator control voltage via a buffer amplifier that
introduces an additional voltage shift and gain.
The level detector generates a voltage output signal
proportional to the amplitude of the input signal. The
unweighted level detector output signal is available in
FM-MUTE-ON condition (mode switch).
The open-collector tuning stop output voltages STOP-0
and STOP-1 (pins 15 and 14) are derived from the
detuning and the input signal level. The pins 14 and 15
may be tied together, if only one tuning-stop output is
required.
May 1994
6
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
LIMITING VALUES (TDA1599T PINNING)
In accordance with the Absolute Maximum Rating System (IEC 134).
Note to the limiting values
1. Equivalent to discharging a 100 pF capacitor through a 1.5 k
series resistor.
THERMAL RESISTANCE
SYMBOL
PARAMETER
MIN.
MAX.
UNIT
V
P
supply voltage (pin 1)
-
0.3
+13
V
V
n1
voltage at pins 2, 4, 5, 6, 10, 11 and 16
-
0.3
+10
V
V
n2
voltage at pins 7, 3, 8, 14, 15, 18, 19 and 20
-
0.3
V
P
V
V
13
voltage on pin 13
-
6
V
I
14, 15
current at pins 14 and 15
-
2
mA
P
tot
total power dissipation
-
360
mW
T
stg
storage temperature
-
55
+150
C
T
amb
operating ambient temperature
-
40
+85
C
V
ESD
electrostatic handling; note 1
all pins except 5 and 7
-
2000
V
pin 5
-
+800
V
-
2000
V
pin 7
-
+1000
V
-
2000
V
SYMBOL
PARAMETER
THERMAL RESISTANCE
R
th j-a
from junction to ambient in free air
SOT102
80 K/W
SOT163A
90 K/W
May 1994
7
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
CHARACTERISTICS (TDA1599T PINNING)
V
P
= 8.5 V; T
amb
=
+
25
C; FM-MUTE-ON (I
7
= 0); f
IF
= 10.7 MHz; deviation
22.5 kHz with f
m
= 400 Hz; V
i
= 10 mV RMS
at pin 20; de-emphasis of 50
s; tuned circuit at pins 10 and 11 aligned for symmetrical stop pulses; measurements
taken in Fig.4 unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
P
positive supply voltage (pin 1)
7.5
8.5
12
V
I
P
supply current
I
2
= I
7
= 0
-
20
26
mA
Mode switch input
I
7
input current for FM-MUTE-ON
-
0
-
mA
V
7
input voltage for FM-MUTE-ON
2.4
2.8
3.2
V
input voltage for FM-MUTE-OFF
0.9V
REF
-
-
V
input voltage for FM-OFF
AF attenuation > 60 dB
-
-
1.4
V
IF amplifier and demodulator
Z
i
demodulator input impedance
between pins 10 and 11
25
40
55
k
C
i
demodulator input capacitance
between pins 10 and 11
-
6
-
pF
AF output (pin 4)
R
o
output resistance
-
400
-
V
4
DC output level
V
iIF
5
V RMS on pin 20
2.75
3.1
3.45
V
RR
1000
power supply ripple rejection on pin 4 f = 1000 Hz;
V
ripple
= 50 mV RMS
33
36
-
dB
Tuning stop detector
f
detuning frequency for STOP-0
on pin 15; Fig.11
for V
15
3.5 V
-
-
+14.0
kHz
for V
15
0.3 V
+22.0
-
-
kHz
f
detuning frequency for STOP-1
on pin 14; Fig.10
for V
14
3.5 V
-
-
-
14.0
kHz
for V
14
0.3 V
-
22.0
-
-
kHz
V
20
dependence on input voltage for
STOP-0 and STOP-1 (RMS value)
Fig.9;
V
14, 15
3.5 V
250
-
-
V
V
14, 15
0.3 V
-
-
50
V
V
14, 15
output voltage
I
14, 15
= 1 mA
-
-
0.3
V
Reference voltage source (pin 5)
V
REF
reference output voltage
I
5
=
-
1 mA
3.3
3.7
4.1
V
R
5
output resistance
I
5
=
-
1 mA
-
40
80
TC
temperature coefficient
-
3.3
-
mV/VK
May 1994
8
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
External muting
V
16
muting voltage at I
2
= 0
V
20
5
V RMS; Fig.12
1.45
1.75
2.05
V
V
20
= 1 mV RMS
3.0
3.45
3.9
V
S
steepness of control voltage
(slope: 100
V
V
20
100 mV)
20
log V
20
= 20 dB (
V
16
/
log V
20
)
-
0.85
-
V/dec
Internal mute
= 20 log (
V
4(FM-MUTE-OFF)
/
V
4(FM-MUTE-ON)
)
mute voltage
V
16
V
REF
-
0
-
dB
V
16
= 0.77V
REF
1.5
-
4.5
dB
V
16
= 0.55V
REF
-
20
-
dB
I
16
current for capacitor (pin 16)
charge current
V
13
= 0 V
-
-
8
-
A
discharge current
V
13
= 0 V
-
+120
-
A
charge current
V
13
= V
REF
-
-
100
-
A
discharge current
V
13
= V
REF
-
+120
-
A
Level detector
R
6
output resistance
-
-
500
V
6
output voltage at I
2
= 0
V
20
5
V RMS; Fig.14
0.1
-
1.1
V
V
20
= 1 mV RMS
3.0
-
4.2
V
200 kHz detuning
1.2
1.5
1.8
V
output voltage at V
2
= V
5
V
20
5
V RMS
-
-
0.3
V
V
6
output voltage at detuning
45 kHz detuning
-
-
0.2
V
TC
temperature coefficient
-
3.3
-
mV/VK
f
detuning frequency
V
6
= 1.8 V; Fig.13
90
-
160
kHz
S
steepness of control voltage
(slope: 50
V
V
20
50 mV)
20
log V
20
= 20 dB (
V
6
/
log V
20
)
1.4
1.7
2.0
V/dec
V
6
/
f
slope of output voltage at detuning
f = 125
20 kHz
-
35
-
mV/kHz
S
level shift adjustments
range by pin 2
V
6
/V
REF
0.42
0.5
-
V/V
gain
-
V
6
/
V
2
-
1.7
-
V/V
range by pin 2
V
16
/V
REF
0.21
0.25
-
V/V
gain
-
V
16
/
V
2
-
0.85
-
V/V
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
May 1994
9
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
OPERATING CHARACTERISTICS (TDA1599T PINNING)
V
P
= 7.5 to 12 V; T
amb
=
+
25
C; FM-MUTE-ON (I
7
= 0); f
IF
= 10.7 MHz; deviation
22.5 kHz with f
m
= 400 Hz; V
i
= 10 mV
RMS at pin 20; de-emphasis of 50
s; tuned circuit at pins 10 and 11 aligned for symmetrical stop pulses;
measurements taken in Fig.4 unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
IF amplifier and demodulator
V
i
input signal for start of limiting (
-
3 dB)
(RMS value; pin 20)
V
7
= V
REF;
FM-MUTE-OFF
14
22
35
V
input signal for signal-to-noise ratio
(RMS value)
f = 250 to 15000 Hz
S/N = 26 dB
V
7
= V
REF
-
15
-
V
S/N = 46 dB
V
7
= V
REF
-
60
-
V
S/N
signal-to-noise ratio
deviation
75 kHZ
-
82
-
dB
V
o
AF output signal (RMS value; pin 4)
180
200
220
mV
THD
total harmonic distortion
deviation
75 kHz;
without de-emphasis
f
m
= 1 kHz; I
7
= 0
without detuning
-
0.1
0.3
%
25 kHz detuning
-
-
0.6
%
compensated via pin 3
V
7
= V
REF
-
0.07
0.25
%
V
4
K2 adjustment
(
V
4
= V
4
(V
3
= 0)
-
V
4
(V
3
= V
REF
))
10
-
-
mV
AM
AM suppression on pin 4
V
7
= V
REF
; m = 30%
V
i
= 0.3 to 1000 mV RMS
on pin 20
46
55
-
dB
V
i
= 1 to 300 mV RMS
on pin 20
60
65
-
dB
Dynamic mute attenuation
= 20 log (
V
4(FM-MUTE-OFF)
/
V
4(FM-MUTE-ON)
)
dynamic mute attenuation
deviation
75 kHz;
-
14
-
dB
f
m
= 100 kHz;
V
2
= 1 V
Tuning stop detector
f
detuning frequency for STOP-0
on pin 15; Fig.11
for V
15
3.5 V
-
-
+14.0
kHz
for V
15
0.
3 V
+22.0
-
-
kHz
f
detuning frequency for STOP-1
on pin 14; Fig.10
for V
14
3.5 V
-
-
-
14.0
kHz
for V
14
0.
3 V
-
22.0
-
-
kHz
V
20
dependence on input voltage for
STOP-0 and STOP-1 (RMS value)
Fig.9;
V
14, 15
3.5 V
250
-
-
V
V
14, 15
0.3 V
-
-
50
V
R
8
internal low-pass resistance of detune
detector
12
25
50
k
May 1994
10
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
V
8
voltage on capacitor
I
7
= 0;
-
2.2
-
V
V
i
5
V RMS on
input pin 20
Level detector (I
2
= 0)
V
6
output voltage
V
20
5
V RMS
0.1
-
1.1
V
V
20
= 1 mV RMS
3.0
-
4.2
V
Reference voltage source (pin 5)
V
REF
reference output voltage
I
5
=
-
1 mA
3.3
3.7
4.1
V
Operation with AM-IF
Level and stop information (on pins 6,13, 14, 15 and 16) is provided for the modes FM-MUTE-ON and
FM-MUTE-OFF. This information is also available in the FM-OFF mode when an AM-IF signal is input (for example
455 kHz). This can also provide a valid detuning information when a suitable AM-IF resonance circuit is provided for
demodulator (Fig.18).
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Fig.4 Test circuit (TDA1599 pinning in parenthesis).
May 1994
11
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
Fig.5
FM-MUTE-ON: Audio signal and noise as functions of the input signal V
iIF
(pin 20) with
f =
22.5 kHz;
f
m
= 1 kHz; de-emphasis 50
s.
(1) audio signal
(2) noise
handbook, full pagewidth
20
V4
(dB)
-
20
-
40
-
60
-
80
0
MEH071
10
-
6
10
-
5
10
-
4
10
-
3
10
-
2
10
-
1
1
(1)
(2)
Vi20 (rms) (V)
Fig.6
FM-MUTE-OFF: Audio signal and noise as functions of the input signal V
iIF
(pin 20) with
f =
22.5 kHz;
f
m
= 1 kHz; de-emphasis 50
s.
(1) audio signal
(2) noise
May 1994
12
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
Fig.7
FM-MUTE-ON: Typical AM suppression as a function of the input signal V
iIF
(pin 20) with
f =
22.5 kHz;
f
m
= 1 kHz; AM with f
m
= 400 Hz; m = 0.3 and 250 to 15000 Hz bandwidth.
(1) audio signal
(2) spurious AM signal
handbook, full pagewidth
20
V4
(dB)
-
20
-
40
-
60
-
80
0
MEH073
10
-
6
10
-
5
10
-
4
10
-
3
10
-
2
10
-
1
1
(1)
(2)
Vi20 (rms) (V)
Fig.8
FM-MUTE-OFF: Typical AM suppression as a function of the input signal V
iIF
(pin 20) with
f =
22.5 kHz;
f
m
= 1 kHz; AM with f
m
= 400 Hz; m = 0.3 and 250 to 15000 Hz bandwidth.
(1) audio signal
(2) spurious AM signal
May 1994
13
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
Fig.9 STOP-0 and STOP-1 output voltage dependent on input signal V
iIF
(pin 20).
handbook, full pagewidth
10
V14, 15
(12, 13)
(V)
0
2
4
6
8
MEH074
10
-
6
10
-
5
10
-
4
10
-
3
10
-
2
10
-
1
1
Vi20 (rms (V)
Fig.10 STOP-1 output voltage dependent on
V
iIF
= 10 mV RMS (pin 20).
Fig.11 STOP-0 output voltage dependent on
V
iIF
= 10 mV RMS (pin 20).
handbook, halfpage
10
0
8
6
4
2
MEH075
detune (kHz)
V15(13)
(V)
-
20
-
10
10
20
30
40
0
May 1994
14
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
Fig.12 External mute voltage V
16
dependent on input signal V
iIF
(pin 20); typical adjusting range.
handbook, full pagewidth
10
V16(14)
(V)
0
2
4
6
8
MEH076
10
-
6
10
-
5
10
-
4
10
-
3
10
-
2
10
-
1
1
(1)
(2)
(3)
Vi20 (rms) (V)
Fig.13 Mute voltage V
16
dependent on detuning; V
iIF
= 10 mV RMS.
handbook, full pagewidth
detune (kHz)
10
0
-
400
-
300
V16(14)
(V)
-
200
-
100
100
0
200
300
400
2
4
6
8
MEH079
May 1994
15
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
Fig.14 Control voltage V
6
dependent on input signal V
iIF
(pin 20); typical adjusting range.
Fig.15 Control voltage V
6
dependent on detuning; V
iIF
= 10 mV RMS.
handbook, full pagewidth
detune (kHz)
10
0
-
400
-
300
V6
(V)
-
200
-
100
100
0
200
300
400
2
4
6
8
MED834
May 1994
16
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
Fig.16 Level output voltage V
3
dependent on input signal V
iIF
(pin 20); typical adjusting range.
Fig.17 Total harmonic distortion dependent on detuning at FM-MUTE-ON; deviation
75 kHz; f
m
= 1 kHz;
V
iIF
= 10 mV.
May 1994
17
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
Fig.18 Interface for AM stop pulse application (SO-version).
May 1994
18
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
Fig.19 Interface for AM stop pulse application (DIL-version).
May 1994
19
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
PACKAGE OUTLINES
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 1994
20
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
UNIT
A
max.
A
1
A
2
A
3
b
p
c
D
(1)
E
(1)
(1)
e
H
E
L
L
p
Q
Z
y
w
v
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC
JEDEC
EIAJ
mm
inches
2.65
0.30
0.10
2.45
2.25
0.49
0.36
0.32
0.23
13.0
12.6
7.6
7.4
1.27
10.65
10.00
1.1
1.0
0.9
0.4
8
0
o
o
0.25
0.1
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
Note
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
1.1
0.4
SOT163-1
92-11-17
95-01-24
10
20
w
M
b
p
detail X
Z
e
11
1
D
y
0.25
075E04
MS-013AC
pin 1 index
0.10
0.012
0.004
0.096
0.089
0.019
0.014
0.013
0.009
0.51
0.49
0.30
0.29
0.050
1.4
0.055
0.42
0.39
0.043
0.039
0.035
0.016
0.01
0.25
0.01
0.004
0.043
0.016
0.01
0
5
10 mm
scale
X
A
A
1
A
2
H
E
L
p
Q
E
c
L
v
M
A
(A )
3
A
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
May 1994
21
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
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).
DIP
S
OLDERING 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.
R
EPAIRING 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.
SO
R
EFLOW SOLDERING
Reflow soldering techniques are suitable for all SO
packages.
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.
Several techniques exist for reflowing; for example,
thermal conduction by heated belt. Dwell times vary
between 50 and 300 seconds depending on heating
method. Typical reflow temperatures range from
215 to 250
C.
Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 minutes at
45
C.
W
AVE SOLDERING
Wave soldering techniques can be used for all SO
packages if the following conditions are observed:
A double-wave (a turbulent wave with high upward
pressure followed by a smooth laminar wave) soldering
technique should be used.
The longitudinal axis of the package footprint must be
parallel to the solder flow.
The package footprint must incorporate solder thieves at
the downstream end.
During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
Maximum permissible solder temperature is 260
C, and
maximum duration of package immersion in solder is
10 seconds, if cooled to less than 150
C within
6 seconds. Typical dwell time is 4 seconds at 250
C.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
R
EPAIRING SOLDERED JOINTS
Fix the component by first soldering two diagonally-
opposite end leads. Use only a low voltage soldering iron
(less than 24 V) applied to the flat part of the lead. Contact
time must be limited to 10 seconds at up to 300
C. When
using a dedicated tool, all other leads can be soldered in
one operation within 2 to 5 seconds between
270 and 320
C.
May 1994
22
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1599
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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