Philips TDA1596T

April 1991 7

Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for FM radio

receivers TDA1596T

CHARACTERISTICS

f = 10.7 MHz; VP = V1-17 = 8.5 V ; V I = V20 (rms) = 1 mV ; Tamb = 25 °C; measured in the circuit of Fig.3; tuned circuit at pins

10, 11 aligned for symmetrical stop pulses; all voltages are referred to ground (pin 17), unless otherwise speciﬁed

SYMBOL PARAMETER MIN. TYP. MAX. UNIT

Supplies

VP= V1Supply voltage 7.5 8.5 12.0 V

I1Supply current at I2= I7= 0 mA −20 26 mA

FM demodulator

R10-11 Input impedance 25 40 55 kΩ

C10-11 −6−pF

V4DC output voltage (no-signal condition) at

V10, 11(p-p) ≤100 µV; V20(rms) ≤5µV2.75 3.10 3.45 V

R4-17 Output impedance −400 −Ω

Mute attenuator control voltage

Control voltage (pin 16)

V16 at V20(rms) ≤5µV−2.0 −V

V16 at V20(rms) = 1 mV −3.45 −V

R10-17 Output impedance (pin 16) −−2.0 MΩ

V2Level shift input (pin 2) internal bias voltage at

I2= 0 mA −1.4 −V

R2-17 input impedance 15 −−kΩ

Internal muting (Fig.6)

Internal attenuation of signals

±22.5 kHz ≤detuning ≤ ±80 kHz;

A = 20log[∆V4(FM mute-off)/∆V4(FM)]

A at V16 ≥1 V5−0−dB

A at V16 = 0.77 V51.5 3.0 4.5 dB

A at V16 = 0.55 V5−20 −dB