Philips Stereo Amplifier TDA1596T User Manual

INTEGRATED CIRCUITS  
DATA SHEET  
TDA1596T  
IF amplifier/demodulator for FM  
radio receivers  
April 1991  
Product specification  
File under Integrated Circuits, IC01  
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Philips Semiconductors  
Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
April 1991  
3
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Philips Semiconductors  
Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
PINNING  
1
VP  
supply voltage  
2
LVA  
level voltage adjustment  
unweighted level output/K2 adjustment  
AF output  
3
ULV  
AF0  
Vref  
4
5
reference voltage output  
weighted level voltage output  
mode switch  
6
WLV  
MSW  
DDV  
n.c.  
7
8
detune detector voltage  
not connected  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
DMI1  
DMI2  
n.c.  
demodulator input 1  
demodulator input 2  
not connected  
TSW  
ST1  
ST0  
MTV  
GND  
LFD1  
LFD2  
IFI  
tau switch  
stop pulse output 1  
stop pulse output 0  
mute voltage  
ground  
IF limiter feedback 1  
IF limiter feedback 2  
IF input  
Fig.2 Pinning diagram.  
April 1991  
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Philips Semiconductors  
Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
FUNCTIONAL DESCRIPTION  
Limiter-amplifier  
This has five stages of IF amplification using balanced differential limiter-amplifiers with emitter--follower coupling.  
Decoupling of the stages from the voltage supply lines and an internal high-ohmic DC feed-back loop give a very stable  
IF performance. The amplifier gain is virtually independent from temperature changes.  
FM demodulator  
The demodulator is fully balanced and comprises two cross-coupled differential amplifiers. Quadrature detection of the  
FM signal is performed by feeding one differential amplifier directly from the limiter--amplifier output, and the other via an  
external 90° phase-shifting network. The demodulator has good stability and its zero cross-over shift is small. The  
bandwidth of the demodulator output is restricted to approximately 1 MHz by an internal low-pass filter.  
THD compensation  
This circuit compensates non-linearities introduced by demodulation. For this to operate correctly the demodulator 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 THD, instead the adjustment criterium is for a symmetrical stop pulse.  
Mute attenuator and AF output  
The control voltage for the mute attenuator at pin 16 is generated from the values of the level detector and the detuning  
detector outputs. The mute attenuator has a fast attack and a slow decay which is determined by the capacitor at pin 16.  
The AF signal is passed via the mute attenuator to the output at pin 4.  
A weighted control voltage, available from pin 6, is obtained from the mute attenuator control voltage via a buffer-amplifier  
which introduces an additional voltage shift and gain.  
Level detector  
The level detector generates a voltage output which is proportional to the field strength of the input signal. The  
unweighted level detector output is available when the mode switch is operating in the FM, mute-on condition.  
Tuning-stop outputs  
The open collector outputs STOP-0 and STOP-1 (from pins 15 and 14 respectively) are voltages derived from the  
detuning level and the field strength of the input signal. If only one tuning-stop output is required, pins 14 and 15 may be  
tied together.  
April 1991  
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Philips Semiconductors  
Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
RATINGS  
Limiting values in accordance with the Absolute Maximum System (IEC 134)  
SYMBOL  
VP = V1-17  
PARAMETER  
Supply voltage (pin 1)  
MIN.  
MAX.  
UNIT  
0.3  
0.3  
0.3  
0.3  
+16  
+ 10  
+ 10  
VP  
V
V
V
V
V
V5-17  
V2-17  
V7-17  
V13-17  
Reference voltage range (pin 5)  
Level adjustment range (pin 2)  
Mode switch voltage range (pin 7)  
Control input voltage range (pin 13)  
THD compensation/unweighted field  
strength voltage range (pin 3)  
Tuning-stop output voltage range  
STOP-0 (pin 15)  
+6  
V3-17  
0.3  
VP  
V
V15-17  
V14-17  
0.3  
0.3  
VP  
VP  
V
V
STOP-1 (pin 14)  
Tuning-stop output current  
STOP-0 (pin 15)  
I15  
55  
40  
2
mA  
mA  
°C  
I14  
STOP-1 (pin 14)  
2
Tstg  
Tamb  
Storage temperature range  
Operating ambient temperature range  
Electrostatic handling(1)  
all pins except pins 5 and 6  
pin 5  
+ 150  
+ 85  
°C  
Ves  
Ves  
Ves  
2000  
2000  
2000  
+ 2000  
+ 900  
+ 1600  
V
V
V
pin 6  
Note  
1. Equivalent to discharging a 100 pF capacitor through a 1.5 kseries resistor.  
THERMAL RESISTANCE  
From junction to ambient (in free air)  
Rth j-a (max.)  
=
95 K/W  
April 1991  
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Philips Semiconductors  
Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
CHARACTERISTICS  
f = 10.7 MHz; VP = V1-17 = 8.5 V; VI = V20 (rms) = 1 mV; Tamb = 25 °C; measured in the circuit of Fig.3; tuned circuit at pins  
10, 11 aligned for symmetrical stop pulses; all voltages are referred to ground (pin 17), unless otherwise specified  
SYMBOL  
Supplies  
PARAMETER  
MIN.  
TYP.  
MAX.  
UNIT  
VP = V1  
I1  
Supply voltage  
Supply current at I2 = I7 = 0 mA  
7.5  
8.5  
12.0  
V
20  
26  
mA  
FM demodulator  
R10-11  
C10-11  
V4  
Input impedance  
25  
40  
6
55  
kΩ  
pF  
V
2.75  
3.45  
DC output voltage (no-signal condition) at  
3.10  
V10, 11(p-p) 100 µV; V20(rms) 5 µV  
R4-17  
Output impedance  
400  
Mute attenuator control voltage  
Control voltage (pin 16)  
V16  
at V20(rms) 5 µV  
at V20(rms) = 1 mV  
2.0  
3.45  
2.0  
V
V16  
V
R10-17  
V2  
Output impedance (pin 16)  
MΩ  
V
Level shift input (pin 2) internal bias voltage at  
I2 = 0 mA  
1.4  
R2-17  
input impedance  
15  
kΩ  
Internal muting (Fig.6)  
Internal attenuation of signals  
± 22.5 kHz detuning ±80 kHz;  
A = 20log[V4(FM mute-off)/V4(FM)]  
A
A
A
at V16 1 V5  
at V16 = 0.77 V5  
at V16 = 0.55 V5  
1.5  
0
4.5  
dB  
dB  
dB  
3.0  
20  
April 1991  
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Philips Semiconductors  
Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
SYMBOL  
PARAMETER  
MIN.  
TYP.  
MAX.  
UNIT  
Attack and decay (pin 16)  
Pin 13 connected to ground *  
+I16  
I16  
charge current  
8
µA  
µA  
discharge current  
120  
Pin 13 connected to Vref  
charge current  
+I16  
I16  
100  
120  
µA  
µA  
discharge current  
Level detector  
Dependence of output voltage on temperature  
3.3  
mV/VK  
V6  
V6T  
-------------  
R6  
Output impedance  
500  
Dependence of output voltage (pin 6) on input voltage  
(pin 20) (Fig.7):  
V6  
V6  
V20(rms) 5 µV; I2 = I7 = 0 mA  
V20(rms) = 1 mV; I2 = I7 = 0 mA  
0.1  
3.0  
0.7  
3.6  
1.7  
1.3  
4.2  
2.0  
V
V
Slope of output voltage (pin 6) for input voltage range 1.4  
V20(rms) 50 µV to V20(rms) 50 mV  
V/20 dB  
V 6  
----------------------------  
20logV20  
Dependence of output voltage (pin 6) on detuning  
(Fig.8) at input voltage V20(rms) = 10 mV:  
V6  
±∆f  
detuning = ±45 kHz  
detuning for V6 = 1.8 V  
detuning = ±200 kHz  
Slope of output voltage with detuning = 125 ± 20 kHz  
at V20(rms) = 10 mV  
0.7  
35  
0.2  
160  
0.9  
V
90  
0.5  
kHz  
V6  
V
|V6/f|  
mV/kHz  
Level shift control (pin 2) (Fig.9)  
adjustment range  
±∆V6  
(V6/V2)  
V6  
1.6  
2.0  
1.7  
V
V
V
adjustment gain  
output voltage at V2 = V5; V20(rms) 5 µV  
0.3  
Low-pass filter at pin 8  
Output voltage at I7 = 0 mA;  
V8  
V20(rms) 5 µV  
Internal resistance  
12  
2.2  
25  
50  
V
R8(int)  
kΩ  
April 1991  
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Philips Semiconductors  
Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
SYMBOL  
Tuning-stop detector (Figs 10 and 11)  
Stop-0: detuning at V20(rms) = 10 mV  
for V15 3.5 V  
PARAMETER  
MIN.  
TYP.  
MAX.  
UNIT  
+∆f  
18  
10  
kHz  
+∆f  
for V15 0.3 V  
kHz  
Stop-1: detuning at V20(rms) = 10 mV  
for V14 3.5 V  
for V14 0.3 V  
−∆f  
−∆f  
18  
10  
kHz  
kHz  
Dependence of STOP-0, STOP-1 on  
input voltage (pin 20)  
input voltage (RMS value) for  
V14 = V15 3.5 V  
input voltage (RMS value) for  
V14 = V15 0.3 V  
V20(rms)  
V20(rms)  
V14, 15  
250  
µV  
µV  
V
50  
0.3  
Output voltage when  
I14 = I15 = 1 mA  
Mode switch and pin 3 (Fig.12)  
FM-off position  
Control voltage for 60 dB  
muting depth  
V7  
1.4  
V
FM, mute-on position (pin 3 = output)  
Internal bias voltage at  
V7  
R7-17 10 MΩ  
Input current  
2.8  
2.5  
V
|I7|  
µA  
Output voltage with  
R3-17 = 10 k; C3-17 1 nF*  
Output impedance for V20 = 5 µV;  
I3 = 500µA  
V3  
2
V
R3-17  
100  
FM, mute-off position (pin 3 = input)  
V7  
Control voltage  
0.9 V5  
15  
V
I7  
Input current at V7 = V5  
Input resistance  
1
µA  
MΩ  
R3-17  
Reference voltage source  
V5  
Output voltage at I5 = 1 mA  
Output impedance at I5 = 1 mA  
3.3  
3.7  
40  
4.1  
80  
V
V5/I5  
TC  
mV/K  
Temperature coefficient  
3.3  
* Connecting pin 13 to ground is only allowed for measuring the current at pin 16. It is not for use in application.  
* Without input voltage.  
April 1991  
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Philips Semiconductors  
Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
OPERATING CHARACTERISTICS  
f = 10.7 MHz; VI = V20(rms) = 1 mV; deviation (f) = 22.5 kHz; modulation frequency (fm) = 400 Hz; de-emphasiss (pin 4)  
= 50 µs; test circuit as per Fig.3; tuned circuit (QL = 19) aligned for symmetrical stop pulses; Tamb = + 25 °C; unless  
otherwise specified  
SYMBOL  
V4(rms)  
PARAMETER  
MIN.  
180  
TYP.  
200  
MAX.  
220  
UNIT  
mV  
AF output voltage (RMS value) at  
V20(rms) = 10 mV  
V20(rms)  
Start of limiting (FM, mute-off); (RMS value)  
(Fig.13)  
14  
22  
35  
µV  
Dependence of signal-to-noise ratio (in noise  
frequency band 250 Hz to 15 kHz, unweighted)  
on input voltage  
V18(rms)  
V18(rms)  
S/N  
for S/N = 26 dB  
15  
60  
82  
0.1  
0.3  
µV  
µV  
dB  
%
for S/N = 46 dB  
at V20(rms) = 10 mV; f = 75 kHz  
THD  
THD (FM, mute-on) at V20(rms) = 10 mV; f = 75  
kHz; fm = 1 kHz; without detuning; without  
de-emphasis; I7 = 0 mA  
αD  
Dynamic mute attenuation (Fig.14)  
16  
dB  
V4 (FM mute off )  
αD = 20log ---------------------------------------------------------  
V4 (FM, muteon )  
with fm = 100 kHz; f = 75 kHz  
Slope of attenuation curve  
αDf  
0.8  
dB/kHz  
THD (FM, mute-on) at V20(rms) = 10 mV;  
f = 75 kHz; fm = 1 kHz;  
detuning ± 25 kHz without  
de-emphasis; I7 = 0 mA (Fig.15)  
THD (FM, mute-off and compensated via  
pin 3) at V20(rms) = 10 mV;  
THD  
0.6  
%
f = 75 kHz; fm = 1 kHz;  
THD  
V3  
V7 = V5  
0
0.07  
0.25  
V5  
%
V
Voltage range at pin 3 for THD compensation  
AM suppression (FM, mute-off) with amplitude  
modulation at 30% input voltage range  
V20 = 300 µV to 100 mV (Fig.16)  
65  
dB  
Power supply ripple rejection = 20log [V1/V4] 33  
36  
dB  
dB  
Mute attenuation (FM-off)  
= 20log [V4(FM-on/V4(FM-off)  
60  
]
April 1991  
10  
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Philips Semiconductors  
Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
April 1991  
11  
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Philips Semiconductors  
Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
Fig.4 Printed-circuit board component side, showing component layout. For circuit diagram see Fig.3.  
Fig.5 Printed-circuit board showing track side.  
April 1991  
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Philips Semiconductors  
Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
Fig.6 Typical curve of internal attenuation showing the relationship between the mute attenuator control voltage  
(pin 16) and mute attenuation; I2 = I7 = 0 mA  
Fig.7 Weighted field strength output voltage (pin 6) as a function of input voltage (pin 20); R6-17 10 k;  
I2 = I7 = 0 mA.  
April 1991  
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Philips Semiconductors  
Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
Fig.8 Weighted field strength output voltage (pin 6) as a function of detuning; R6-17 10 k; I2 = I7 = 0 mA;  
V20 = 10 mV.  
Fig.9 Adjustment range of weighted field strength output voltage (pin 6) with level shift control (pin 2);  
R6-17 10 k; I7 = 0 mA.  
April 1991  
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Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
(a) STOP-0.  
(b) STOP-1.  
Fig.10 STOP-0 and STOP-1 output voltages as a function of detuning, measured at V20 = 10 mV.  
April 1991  
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Philips Semiconductors  
Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
Fig.11 STOP-0 or STOP-1 output voltages as a function of input voltage at pin 20.  
Fig.12 Switch levels at pin 7.  
April 1991  
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Philips Semiconductors  
Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
(a) mode switch at FM, mute-on  
(b) mode switch at FM, mute-off  
Fig.13 Audio signal (f = 22.5 kHz; fm = 1 kHz) and noise as functions of input voltage at pin 20; measured with  
50 µs de-emphasis.  
April 1991  
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Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
Fig.14 Dynamic mute attenuation as a function of frequency deviation for modulation frequencies of 40, 60, 80  
and 100 kHz.  
Fig.15 THD as a function of detuning, mode switch at FM, mute-on position; f = 75 kHz; fm = 1 kHz;  
V20(rms) = 10 mV.  
April 1991  
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Philips Semiconductors  
Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
(a) mode switch at FM, mute-on  
(b) mode switch at FM, mute-off  
Fig.16 Typical curves showing AM suppression for an input signal having frequency modulation at f = 22.5 kHz  
and fm = 1 kHz, and amplitude modulation of 30% at a frequency of 400 Hz; de-emphasis time = 50 µs and  
bandwidth = 250 Hz to 15 kHz.  
April 1991  
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Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
PACKAGE OUTLINE  
SO20: plastic small outline package; 20 leads; body width 7.5 mm  
SOT163-1  
D
E
A
X
c
y
H
E
v
M
A
Z
20  
11  
Q
A
2
A
(A )  
3
A
1
pin 1 index  
θ
L
p
L
1
10  
w
detail X  
e
M
b
p
0
5
10 mm  
scale  
DIMENSIONS (inch dimensions are derived from the original mm dimensions)  
A
max.  
(1)  
(1)  
(1)  
UNIT  
A
A
A
b
c
D
E
e
H
L
L
Q
v
w
y
θ
1
2
3
p
E
p
Z
0.30  
0.10  
2.45  
2.25  
0.49  
0.36  
0.32  
0.23  
13.0  
12.6  
7.6  
7.4  
10.65  
10.00  
1.1  
0.4  
1.1  
1.0  
0.9  
0.4  
mm  
2.65  
0.25  
0.01  
1.27  
0.050  
1.4  
0.25 0.25  
0.01  
0.1  
8o  
0o  
0.012 0.096  
0.004 0.089  
0.019 0.013 0.51  
0.014 0.009 0.49  
0.30  
0.29  
0.42  
0.39  
0.043 0.043  
0.016 0.039  
0.035  
0.016  
inches 0.10  
0.055  
0.01 0.004  
Note  
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.  
REFERENCES  
OUTLINE  
EUROPEAN  
PROJECTION  
ISSUE DATE  
VERSION  
IEC  
JEDEC  
EIAJ  
92-11-17  
95-01-24  
SOT163-1  
075E04  
MS-013AC  
April 1991  
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Philips Semiconductors  
Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
SOLDERING  
Introduction  
Wave soldering  
Wave soldering techniques can be used for all SO  
packages if the following conditions are observed:  
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.  
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.  
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).  
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.  
Reflow soldering  
Reflow soldering techniques are suitable for all SO  
packages.  
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  
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.  
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.  
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.  
Repairing 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.  
Preheating is necessary to dry the paste and evaporate  
the binding agent. Preheating duration: 45 minutes at  
45 °C.  
April 1991  
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Philips Semiconductors  
Product specification  
IF amplifier/demodulator for FM radio  
receivers  
TDA1596T  
DEFINITIONS  
Data sheet status  
Objective specification  
Preliminary specification  
Product specification  
This data sheet contains target or goal specifications for product development.  
This data sheet contains preliminary data; supplementary data may be published later.  
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.  
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.  
April 1991  
22  
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