Philips TDA1597

1997 Feb 27 8

Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for FM radio receivers TDA1597

OPERATING CHARACTERISTICS

VP= 7.5 to 12 V; Tamb=25°C; FM-MUTE-ON (I7= 0); fIF = 10.7 MHz; deviation ±22.5 kHz with fm= 400 Hz;

Vi= 10 mV (RMS) at pin 20; de-emphasis of 50 µs; tuned circuit at pins 10 and 11 aligned for symmetrical stop pulses;

measurements taken in Fig.4; unless otherwise speciﬁed.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

IF ampliﬁer and demodulator

Vi(rms) input signal for start of limiting

(−3 dB) (RMS value; pin 20) V7=V

ref; FM-MUTE-OFF 14 22 35 µV

input signal for signal-to-noise

ratio (RMS value) f = 250 to 15000 Hz; V7=V

ref

S/N = 26 dB −15 −µV

S/N = 46 dB −60 −µV

S/N signal-to-noise ratio deviation ±75 kHz −82 −dB

Vo(rms) AF output signal (RMS value;

pin 4) 180 200 220 mV

THD total harmonic distortion without

de-emphasis

without detuning deviation ±75 kHz; fm= 1 kHz;

I7=0

−0.1 0.3 %

±25 kHz detuning deviation±75 kHz; fm= 1 kHz;

I7=0

−−0.6 %

compensated via pin 3 deviation ±75 kHz; fm= 1 kHz;

I7=0;V

7=V

ref

−0.07 0.25 %

∆V4K2 adjustment

∆V4=V

4(V3=0)−V

4(V3=V

ref)

10 −−mV

αAM AM suppression on pin 4 V7=V

ref; m = 30%

Vi= 0.3 to 1000 mV (RMS) on pin20 46 55 −dB

Vi= 1 to 300 mV (RMS) on pin 20 60 65 −dB

Dynamic mute attenuation α;note 1

αdynamic mute attenuation deviation ±75 kHz;

fm= 100 kHz; V2=1V

−14 −dB