Справочник Пользователя для Philips TDA1597

1997 Feb 27

2

•

Balanced limiting amplifier

•

Balanced coincidence demodulator

•

Two open-collector stop pulse outputs for
microcomputer tuning control

•

Simulated behaviour of 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.

The TDA1597 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 receivers circuits.

All pin numbers mentioned in this data sheet refer to the
SO version (TDA1597T) unless otherwise specified.

V

P

supply voltage

7.5

8.5

12

V

I

P

supply current (l

2

= I

7

= 0)

−

20

26

mA

V

iIF(rms)

IF input sensitivity for limiting on pin 20
(RMS value)

14

22

35

µ

V

V

oAF(rms)

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

%

K2 adjustment and
FM-MUTE-OFF

−

0.07

0.25

%

T

amb

operating ambient temperature

−

40

−

+85

°

C

TDA1597

DIP18

plastic dual in-line package; 18 leads (300 mil)

SOT102-1

TDA1597T

SO20

plastic small outline package; 20 leads; body width 7.5 mm

SOT163-1