Philips TDA1591-V3-S3, TDA1591-V3-S1 Datasheet

DATA SH EET

Product specification
Supersedes data of March 1992
File under Integrated Circuits, IC01

1996 Sep 02

INTEGRATED CIRCUITS

TDA1591

PLL stereo decoder and noise
blanker

1996 Sep 02 2

Philips Semiconductors Product specification

PLL stereo decoder and noise blanker TDA1591

FEATURES

• Adjustment-free voltage controlled PLL oscillator for
ceramic resonator (f = 456 kHz)

• Pilot signal dependent mono/stereo switching

• Analog control of mono/stereo change over

[stereo blend, Stereo Noise Controller (SNC)]

• Adjacent channel noise suppression (114 kHz)

• Pilot canceller

• Analog control of de-emphasis; High Cut Control (HCC)

• Applicable as source selector for AM/FM/cassette

switching

• Separate interference noise detector

• Integrated input low-pass filter for delayed noise

blanking

• Noise blanking at MPX-demodulator outputs

• Internal voltage stabilization.

GENERAL DESCRIPTION

The TDA1591 is a monolithic bipolar integrated circuit
providing the stereo decoder function and noise blanking
for FM car radio applications.

The device operates in a power supply range of

7.5 to 12 V.

QUICK REFERENCE DATA

ORDERING INFORMATION

SYMBOL PARAMETER MIN. TYP. MAX. UNIT

V

P

supply voltage (pin 5) 7.5 10 12 V

I

P

supply current − 12 − mA

V

o(rms)

audio output signal (RMS value) − 900 − mV
THD total harmonic distortion − 0.1 0.3 %
S/N signal-to-noise ratio − 76 − dB

α

cs

channel separation − 40 − dB
V

trigg

interference voltage trigger level − 10 − mV

TYPE

NUMBER

PACKAGE

NAME DESCRIPTION VERSION

TDA1591 DIP20 plastic dual in-line package; 20 leads (300 mil) SOT146-1
TDA1591T SO20 plastic small outline package; 20 leads; body width 7.5 mm SOT163-1

1996 Sep 02 3

Philips Semiconductors Product specification

PLL stereo decoder and noise blanker TDA1591

BLOCK DIAGRAM

handbook, full pagewidth

stereo

indication

SNC

HCC

V

i MPX

68 kΩ 82 kΩ

0.1 µF

68 pF

C

comp

470 kΩ

0.1

µF

10 kΩ

V

ref

= 1 to 5 V

from pin 5

27 kΩ

27 kΩ

from IF level detector

100 kΩ 100 kΩ

12 3 4567 8 9 10

111213141516

20 19 18 17

+

+

+

+

6.8 nF

6.8 nF

47 kΩ

0.22 µF

0.22 µF

V

0.22 µF

47 kΩ

47 kΩ

47 kΩ

0.22 µF

mute on

VCO off

6.5 kΩ

6.5


kΩ

PILOT

DETECTOR

SWITCH

STEREO

BLEND

4-POLE

FILTER

(80 kHz)

PILOT

CANCEL

2-POLE

FILTER

(30 kHz)

GATE

AND

HCC

PHASE

DETECTOR

LOGIC

INTERFERENCE

DETECTOR



PULSE

FORMER

VCO

VOLTAGE

STABILIZER

REFERENCE

CURRENT



NOISE

DETECTOR

470

pF

2.2

kΩ

470

pF

1.2

nF

0.1

µF

100 kΩ

CSB456F11

(Murata)

22

nF

0.22

µF

27 kΩ

V

P

= 10 V

INFI

interference signal (TDA1596, pin 3)

19 kHz

TDA1591

R1

75 kΩ

forced

mono

7.4 kΩ

7.4 kΩ

47

nF

IDENT

38 kHz

100

µF

FB-R

R2

R3

FB-L

10 Ω

(1)

MEH027

iAUX

V

oL

V

oR

V

iAUX

PILOT

12 kΩ

Fig.1 Block diagram with external components, also used as test circuit.

(1) Simulates the roll-off of the FM demodulator.

1996 Sep 02 4

Philips Semiconductors Product specification

PLL stereo decoder and noise blanker TDA1591

PINNING

SYMBOL PIN DESCRIPTION

PLL 1 phase locked loop filter
OSC 2 oscillator input/output pin for

ceramic resonator
GND 3 ground (0 V)
I

ref

4 reference current

V

P

5 supply voltage (+10 V)
INFI 6 interference signal input
PUFO 7 pulse former time constant;

VCO off

NDET 8 noise detector time constant;

mute on

FB-L 9 AF feedback input for left audio

signal

V

oL

10 AF output signal left

V

oR

11 AF output signal right

FB-R 12 AF feedback input for right audio

signal

C

DEEL

13 de-emphasis capacitor for left

channel

C

DEER

14 de-emphasis capacitor for right

channel
HCC 15 HCC input for de-emphasis control
SNC 16 stereo blend input
V

ref

17 externally applied reference

voltage of 1 to 5 V
IDENT 18 identification output (HIGH = pilot

existing; stereo)
PILOT 19 pilot detector level (forced mono

input)
V

i MPX

20 MPX input signal from IF

demodulator

Fig.2 Pin configuration.

handbook, halfpage

TDA1591

MHA363

1
2
3
4
5
6
7
8
9

10

20
19
18
17
16
15
14
13
12
11

PLL
OSC
GND

INFI
PUFO
NDET

FB-L

V

oL

I

ref

V

P

V

i MPX

V

oR

C

DEEL

C

DEER

HCC

SNC

IDENT

PILOT

V

ref

FB-R

1996 Sep 02 5

Philips Semiconductors Product specification

PLL stereo decoder and noise blanker TDA1591

FUNCTIONAL DESCRIPTION

Adapting the MPX input to the level of the FM demodulator
output is realized by the value of input resistor R1
(see Fig.3). The total gain of the stereo decoder is
applicable by varying the feedback resistors R2 and R3
(see Figs 1 and 4).

In mute position and the VCO switched off (pin 7), the
output amplifiers can be used for cassette playback,
AM stereo purpose or other signal sources.

The Stereo Noise Controller (SNC) provides a smooth
mono to stereo take-over (see Fig.5).

For High Cut Control (HCC), the de-emphasis time
constant can be changed to higher values
(see Figs 7 and 8). This function is controlled by an analog
input signal.

The noise blanking facility is achieved by gating the stereo
decoder output signal.

The interference detector generates a gating pulse
preferable forced by the level detector voltage of the IF
part.

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

Note

1. Equivalent to discharging a 200 pF capacitor through a 0 Ω series resistor.

SYMBOL PARAMETER MIN. MAX. UNIT

V

P

supply voltage (pin 5) 0 13.2 V

P

tot

total power dissipation 0 0.25 W

T

stg

storage temperature −55 +150 °C

T

amb

operating ambient temperature −40 +85 °C

V

es

electrostatic handling; note 1

pins 1 and 16 −400 +400 V
pin 5 −300 +300 V
all other pins −600 +600 V

1996 Sep 02 6

Philips Semiconductors Product specification

PLL stereo decoder and noise blanker TDA1591

CHARACTERISTICS

VP= 10 V; T

amb

=25°C; input signal V

i MPX(p-p)

= 1.7 V; m = 100% (∆f=±75 kHz, f

mod

= 1 kHz); de-emphasis of 50 µs

and series resistor at input R1 = 150 kΩ; measurements taken in Fig.1; unless otherwise specified.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply

V

P

supply voltage (pin 5) 7.5 10 12 V

I

P

supply current − 12 − mA

Stereo decoder

V

i MPX(p-p)

MPX input signal on pin 20
(peak-to-peak value)

− 1.7 − V

∆V

i MPX(p-p)

overdrive margin of MPX input signal THD = 1% 3 −−dB

V

o(rms)

AF mono output signal at pins 10 and 11
(RMS value)

without pilot − 900 − mV

∆V

o

overdrive margin of output signal THD = 1% 3 −−dB

V

10-11/Vo

difference of output voltage levels −−1dB

V

o 10,11

DC output voltage (pins 10 and 11) 3.3 3.8 4.3 V

R

o 10,11

output resistance − 130 −Ω

α

cs

channel separation pin 16 open-circuit;

see Fig.6

− 40 − dB

THD total harmonic distortion − 0.1 0.3 %
S/N signal-to-noise ratio f = 20 to 16000 Hz − 76 − dB

α

19

pilot signal suppression f = 19 kHz − 50 − dB

α

38

subcarrier suppression f = 38 kHz − 50 − dB

α

57

f = 57 kHz − 46 − dB

α

76

f = 76 kHz − 60 − dB

IM2 intermodulation for f

spur

= 1 kHz f

mod

= 10 kHz; note 1 − 60 − dB

IM3 f

mod

= 13 kHz; note 1 − 58 − dB

α

57

ARI traffic radio (ARI) f = 57 kHz; note 2 − 70 − dB

α

67

Subsidiary Communication Authorization
(SCA)

f = 67 kHz; note 3 70 −−dB

α

114

Adjacent Channel Interference (ACI) f = 114 kHz; note 4 − 80 − dB

α

190

f = 190 kHz; note 4 − 70 − dB

PSRR power supply ripple rejection f = 100 Hz;

V

ripple(rms)

= 100 mV

− 35 − dB

VCO (pin 2)

f

osc

oscillator frequency (ceramic resonator) − 456 − kHz

frequency range of free running oscillator 452 − 460 kHz
∆f/f capture and holding range − 1 − %
V

7

VCO-off voltage (pin 7) 0 − 0.6 V