TDA1597 Просмотр технического описания (PDF) - Philips Electronics
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TDA1597 Datasheet PDF : 24 Pages
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Philips Semiconductors
IF amplifier/demodulator for FM radio receivers
Product specification
TDA1597
FEATURES
• 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.
GENERAL DESCRIPTION
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.
QUICK REFERENCE DATA
SYMBOL
VP
IP
ViIF(rms)
VoAF(rms)
S/N
THD
Tamb
PARAMETER
CONDITIONS
supply voltage
supply current (l2 = I7 = 0)
IF input sensitivity for limiting on pin 20
(RMS value)
AF output signal on pin 4 (RMS value)
signal-to-noise ratio
fm = 400 Hz;
∆f = ±75 kHz
total harmonic distortion
fm = 1 kHz;
∆f = ±75 kHz
K2 adjustment and
FM-MUTE-OFF
operating ambient temperature
MIN.
7.5
−
14
TYP.
8.5
20
22
MAX.
12
26
35
UNIT
V
mA
µV
180
200
220
mV
−
82
−
dB
−
0.1
0.3
%
−
0.07 0.25 %
−40
−
+85
°C
ORDERING INFORMATION
TYPE
NUMBER
TDA1597
TDA1597T
NAME
DIP18
SO20
PACKAGE
DESCRIPTION
plastic dual in-line package; 18 leads (300 mil)
plastic small outline package; 20 leads; body width 7.5 mm
VERSION
SOT102-1
SOT163-1
1997 Feb 27
2
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