Datasheet TDA1596-V3 Datasheet (Philips)

DATA SH EET

Product specification
File under Integrated Circuits, IC01

April 1991

INTEGRATED CIRCUITS

TDA1596

IF amplifier/demodulator for
FM radio receivers

April 1991 2

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

GENERAL DESCRIPTION

The TDA1596 provides IF amplification, symmetrical quadrature demodulation and level detection for quality home and
car FM radio receivers and is suitable for both mono and stereo reception. It may also be applied to common front-ends,
stereo decoders and AM receiver circuits.

Features

• Simulates behaviour of a ratio detector (internal field strength and detuning-dependent voltage for dynamic AF signal
muting)

• Mono/stereo blend and field strength indication control voltage

• Three-state mode switch for FM, mute-on / FM, mute-off / FM-off

• Internal compensation of AF signal total harmonic distortion (THD)

• Two open collector stop pulse outputs for microcomputer tuning control (can be one stop pulse output by

wired-ANDing)

• Internal reference voltage source

• Built-in hum and ripple rejection circuits

QUICK REFERENCE DATA

SEE ALSO DATA SHEET FOR TDA1596T

PACKAGE OUTLINE

18-lead DIL; plastic (SOT102); SOT102-1; 1996 August 06.

PARAMETER CONDITIONS SYMBOL MIN. TYP. MAX. UNIT

Supply voltage (pin 1) V

P

7.5 8.5 12.0 V

Supply current (pin 1) V

P

= 8.5 V;

I

2

= I7 = 0 mA I

P

− 20 26 mA

AF output voltage

(RMS value) V

18(rms)

= 10 mV V

4(rms)

180 200 220 mV

Signal-to-noise ratio V

18(rms)

= 10 mV;

f

m

= 400 Hz;

∆f = 75 kHz S/N − 82 − dB

Total harmonic distortion V

18(rms)

= 10 mV;

f

m

= 1 kHz; I7 = 0 mA;
∆f = 75 kHz; FM mute on;
without de-emphasis;
without detuning THD − 0.1 0.3 %

Operating ambient

temperature range T

amb

−40 −+85 °C

April 1991 3

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

Fig.1 Block diagram and application circuit.

(1) Connecting pin 11 to ground is only allowed for measuring the current at pin 14. It is not for use in application.

(2) In the FM, mute-on condition the unweighted level detector output is available from pin 3. In the FM, mute-off condition the variable resistor at

pin 3 can be adjusted for minimum 2nd harmonic distortion at pin 4.

April 1991 4

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

PINNING

Fig.2 Pinning diagram.

1VPsupply voltage
2 LVA level voltage adjustment
3 ULV unweighted level output/K2 adjustment
4 AFO AF output
5V

ref

reference voltage output
6 WLV weighted level voltage output
7 MSW mode switch
8 DDV detune detector voltage
9 DMI1 demodulator input 1

10 DMI2 demodulator input 2
11 TSW tau switch
12 ST1 stop pulse output 1
13 ST0 stop pulse output 0
14 MTV mute voltage
15 GND ground
16 LFD1 IF limiter feedback 1
17 LFD2 IF limiter feedback 2
18 IFI IF input

April 1991 5

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

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 9 and 10 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 14 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 14.
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 13 and 12 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 12 and 13 may be
tied together.

April 1991 6

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

RATINGS

Limiting values in accordance with the Absolute Maximum System (IEC 134)

*

Equivalent to discharging a 100 pF capacitor through a 1.5 kΩ series resistor.

PARAMETER SYMBOL MIN. MAX. UNIT

Supply voltage (pin 1) V

P

= V

1-15

−0.3 + 16 V

Reference voltage range (pin 5) V

5-15

−0.3 + 10 V

Level adjustment range (pin 2) V

2-15

−0.3 + 10 V

Mode switch voltage range (pin 7) V

7-15

−0.3 + 16 V

Control input voltage range (pin 11) V

11-15

−0.3 + 6V

THD compensation/unweighted field

strength voltage range (pin 3) V

3-15

−0.3 + 16 V

Tuning-stop output voltage range

STOP-0 (pin 13) V

13-15

−0.3 + 16 V

STOP-1 (pin 12) V

12-15

−0.3 + 16 V

Tuning-stop output current

STOP-0 (pin 13) I

13

− 2mA

STOP-1 (pin 12) I

12

− 2mA

Storage temperature range T

stg

−55 + 150 °C

Operating ambient temperature range T

amb

−40 + 85 °C

Electrostatic handling

*

all pins except pins 5 and 6 V

es

−2000 +2000 V

pin 5 V

es

−2000 +900 V

pin 6 V

es

−2000 +1600 V

April 1991 7

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

CHARACTERISTICS

f = 10.7 MHz; V

P

= V

1-15

= 8.5 V; VI = V

18(rms)

= 1 mV; T

amb

= 25 °C; measured in the circuit of Fig.3; tuned circuit at

pins 9, 10 aligned for symmetrical stop pulses; all voltages are referred to ground (pin 15); unless otherwise specified

PARAMETER SYMBOL MIN. TYP. MAX. UNIT

Supplies

Supply voltage V

P

= V

1

7.5 8.5 12.0 V

Supply current at I

2

= I7 = 0 mA I

1

− 20 26 mA

FM demodulator

Input impedance R

9-10

25 40 55 kΩ

C

9-10

− 6 − pF

DC output voltage (no-signal

condition) at
V

9, 10(p-p)

≤ 100 µV;

V

18(rms)

≤ 5 µVV

4

2.75 3.10 3.45 V

Output impedance R

4-15

− 400 −Ω

Mute attenuator control voltage

Control voltage (pin 14)

at V

18(rms)

≤ 5 µVV

14

− 2.0 − V

at V

18(rms)

= 1 mV V

14

− 3.45 − V

Output impedance (pin 14) R

14-15

−−2.0 MΩ

Level shift input (pin 2)

internal bias voltage at I

2

= 0 mA V

2

− 1.4 − V

input impedance R

2-15

15 −−kΩ

Internal muting (Fig.4)

Internal attenuation of signals

± 22.5 kHz ≤ detuning ≤ ± 80 kHz

A = 20log[∆V

4

(FM mute-off)/∆V4(FM)]

at V

14

≥ 1 V

5

A − 0 − dB

at V

14

= 0.77 V

5

A 1.5 3.0 4.5 dB

at V

14

= 0.55 V

5

A − 20 − dB

Attack and decay (pin 14)

Pin 11 connected to ground

*

charge current + I

14

− 8 −µA

discharge current −I

14

− 120 −µA

Pin 11 connected to V

ref

charge current + I

14

− 100 −µA

discharge current −I

14

− 120 −µA

April 1991 8

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

Level detector

Dependence of output voltage

on temperature

− 3.3 − mV/VK

Output impedance R

6

−−500 Ω

Dependence of output voltage (pin 6)

on input voltage (pin 18) (Fig.5):
V

18(rms)

≤ 5 µV; I2 = I7 = 0 mA V

6

0.1 0.7 1.3 V

V

18(rms)

= 1 mV; I2 = I7= 0 mA V

6

3.0 3.6 4.2 V

Slope of output voltage (pin 6)

for input voltage range
V

18(rms)

≥ 50 µV to

V

18(rms)

≤ 50 mV

1.4 1.7 2.0 V/20 dB

Dependence of output voltage (pin 6)

on detuning (Fig.6) at input
voltage V

18(rms)

= 10 mV:

detuning ≤ ± 45 kHz ∆V

6

−−0.2 V

detuning = for V

6

= 1.8 V ±∆f90−160 kHz

detuning = ± 200 kHz V

6

0.5 0.7 0.9 V

Slope of output voltage with

detuning = 125 ± 20 kHz at
V

18(rms)

= 10 mV |∆V6/∆f| − 35 − mV/kHz

Level shift control (pin 2) (Fig.7)

adjustment range ± ∆V

6

1.6 2.0 − V

adjustment gain −(∆V

6

/∆V2) − 1.7 − V

output voltage at V

2

= V

5;

V

18(rms)

≤ 5 µVV

6

−−0.3 V

Low-pass filter at pin 8

Output voltage at I

7

= 0 mA;

V

18(rms)

≤ 5 µVV

8

−2.2 − V

Internal resistance R

8(int)

12 25 50 kΩ

PARAMETER SYMBOL MIN. TYP. MAX. UNIT

∆V

6

V6∆T

-------------- -

∆ V

6

20∆ V

18

log

---------------------------- -

April 1991 9

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

* Connecting pin 11 to ground is only allowed for measuring the current at pin 14. It is not for use in application.
** Without input voltage.

Tuning-stop detector (Figs 8 and 9)

Stop-0: detuning at V

18(rms)

= 10 mV

for V

13

≥ 3.5 V + ∆f −−10 kHz

for V

13

≤ 0.3 V + ∆f18−−kHz

Stop-1: detuning at V

18(rms)

= 10 mV

for V

12

≥ 3.5 V −∆f −−10 kHz

for V

12

≤ 0.3 V −∆f18−−kHz

Dependence of STOP-0, STOP-1 on

input voltage (pin 18)
input voltage (RMS value) for
V

12

= V13 ≥ 3.5 V V

18(rms)

250 −−µV
input voltage (RMS value) for
V

12

= V13 ≤ 0.3 V V

18(rms)

−−50 µV

Output voltage when

I

12

= I13 = 1 mA V

12, 13

−−0.3 V

Mode switch and pin 3 (Fig.10)

FM-off position

Control voltage for 60 dB

muting depth V

7

−−1.4 V

FM, mute-on position (pin 3 = output)

Internal bias voltage at

R

7-15

≥ 10 MΩ V

7

− 2.8 − V

Input current |I

7

| −−2.5 µA

Output voltage with

R

3-15

= 10 kΩ; C

3-15

≥ 1 nF

**

V

3

− 2 − V

Output impedance for V

18

= ≤ 5 µV;

I

3

= 500 µAR

3-15

−−100 Ω

FM, mute-off position (pin 3 = input)

Control voltage V

7

0.9 V

5

−−V

Input current at V

7

= V

5

I

7

−−15 µA

Input resistance R

3-15

1 −−MΩ

Reference voltage source

Output voltage at I

5

= −1 mA V

5

3.3 3.7 4.1 V

Output impedance at I

5

= −1 mA ∆V5/∆I

5

− 40 80 Ω

Temperature coefficient TC − 3.3 − mV/K

PARAMETER SYMBOL MIN. TYP. MAX. UNIT

April 1991 10

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

OPERATING CHARACTERISTICS

f = 10.7 MHz; V

18(rms)

= 1 mV; deviation (∆f) = 22.5 kHz; modulation frequency (fm) = 400 Hz; de-emphasis

(pin 4) = 50 µs; test circuit as per Fig.3; tuned circuit (Q

L

= 19) aligned for symmetrical stop pulses; T

amb

= +25 °C;

unless otherwise specified

PARAMETER SYMBOL MIN. TYP. MAX. UNIT

AF output voltage (RMS value)

at V

18(rms)

= 10 mV V

4(rms)

180 200 220 mV

Start of limiting (FM, mute-off);

(RMS value) (Fig.11) V

18(rms)

14 22 35 µV

Dependence of signal-to-noise ratio

(in noise frequency band 250 Hz to
15 kHz, unweighted) on input voltage
for S/N = 26 dB V

18(rms)

− 15 −µV

for S/N = 46 dB V

18(rms)

− 60 −µV

at V

18(rms)

= 10 mV; ∆f = 75 kHz S/N − 82 − dB

THD (FM, mute-on) at V

18(rms)

= 10 mV;

∆f = 75 kHz; f

m

= 1 kHz; without
detuning; without de-emphasis;
I

7

= 0 mA THD − 0.1 0.3 %

Dynamic mute attenuation (Fig.12)

with f

m

= 100 kHz; ∆f = 75 kHz α

D

− 16 − dB

Slope of attenuation curve α

D

∆f − 0.8 − dB/kHz

THD (FM, mute-on) at V

18(rms)

= 10 mV;

∆f = 75 kHz; f

m

= 1 kHz;
detuning ≤ ± 25 kHz without
de-emphasis; I

7

= 0 mA (Fig.13) THD −−0.6 %

THD (FM, mute-off and compensated via

pin 3) at V

18(rms)

= 10 mV;

∆f = 75 kHz; f

m

= 1 kHz;
V

7

= V

5

THD − 0.07 0.25 %

Voltage range at pin 3 for THD

compensation V

3

0 − V

5

V

AM suppression (FM, mute-off) with

amplitude modulation at 30%;
input voltage range V

18

= 300 µV

to 100 mV (Fig.14) − 65 − dB

Power supply ripple rejection

= 20log [∆V

1

/∆V4]3336−dB

Mute attenuation (FM-off)

= 20log [V

4(FM-on/V4(FM-off)

]60−−dB

αD20

V

4

FMmute off–()

V

4

FM mute, on–()

----------------------------------------------------- -log=

April 1991 11

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

Fig.3 Test circuit.

April 1991 12

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

Fig.4 Typical curve of internal attenuation showing the relationship between the mute

attenuator control voltage (pin 14) and mute attenuation, I2 = I7 = 0 mA.

Fig.5 Weighted field strength output voltage (pin 6) as a function of input voltage (pin 18);

R

6-15

≥ 10 kΩ; I2= I7= 0 mA.

April 1991 13

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

Fig.6 Weighted field strength output voltage (pin 6) as a function of detuning;

R

6-15

≥ 10 kΩ; I2 = I7 = 0 mA; V18 = 10 mV.

Fig.7 Adjustment range of weighted field strength output voltage (pin 6) with level shift control (pin 2);

R

6-15

≥ 10 kΩ; I7 = 0 mA.

April 1991 14

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

Fig.8 STOP-0 and STOP-1 output voltages as a function of detuning, measured at V18 = 10 mV.

(b) STOP-1

(a) STOP-0.

April 1991 15

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

Fig.9 STOP-0 or STOP-1 output voltages as a function of input voltage at pin 18.

Fig.10 Switch levels at pin 7.

April 1991 16

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

Fig.11 Audio signal (∆f = 22.5 kHz; fm = 1 kHz) and noise as functions of input voltage at pin 18;

measured with 50 µs de-emphasis.

(b) mode switch at FM, mute-off

(a) mode switch at FM, mute-on

April 1991 17

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

Fig.12 Dynamic mute attenuation as a function of frequency deviation for

modulation frequencies of 40, 60, 80 and 100 kHz.

Fig.13 THD as a function of detuning; mode switch at FM, mute-on position;

∆f = 75 kHz; fm= 1 kHz; V

18(rms)

= 10 mV.

April 1991 18

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

Fig.14 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.

(b) mode switch at FM, mute-off

(a) mode switch at FM, mute-on.

April 1991 19

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

PACKAGE OUTLINE

REFERENCES

OUTLINE
VERSION

EUROPEAN

PROJECTION

ISSUE DATE

IEC JEDEC EIAJ

SOT102-1

93-10-14
95-01-23

UNIT

A

max.

12

b

1

(1) (1)

(1)

b

2

cD 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

0.2542.54 7.62

8.25

7.80

9.5

8.3

0.854.7 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

0.010.10 0.30

0.32

0.31

0.37

0.33

0.0330.19 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

April 1991 20

Philips Semiconductors Product specification

IF amplifier/demodulator for
FM radio receivers

TDA1596

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.