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April 1991 8
Philips Semiconductors Product specification
IF amplifier/demodulator for FM radio
receivers
TDA1596T
Attack and decay (pin 16)
Pin 13 connected to ground *
+I
16
charge current − 8 −µA
−I
16
discharge current − 120 −µA
Pin 13 connected to V
ref
+I
16
charge current − 100 −µA
−I
16
discharge current − 120 −µA
Level detector
Dependence of output voltage on temperature − 3.3 − mV/VK
R
6
Output impedance −−500 Ω
Dependence of output voltage (pin 6) on input voltage
(pin 20) (Fig.7):
V
6
V
20(rms)
≤ 5 µV; I
2
= I
7
= 0 mA 0.1 0.7 1.3 V
V
6
V
20(rms)
= 1 mV; I
2
= I
7
= 0 mA 3.0 3.6 4.2 V
Slope of output voltage (pin 6) for input voltage range
V
20(rms)
≥50 µV to V
20(rms)
≤50 mV
1.4 1.7 2.0 V/20 dB
Dependence of output voltage (pin 6) on detuning
(Fig.8) at input voltage V
20(rms)
= 10 mV:
∆V
6
detuning = ≤ ±45 kHz −−0.2 V
±∆f detuning for V
6
= 1.8 V 90 − 160 kHz
V
6
detuning = ±200 kHz 0.5 0.7 0.9 V
|∆V
6
/∆f| Slope of output voltage with detuning = 125 ± 20 kHz
at V
20(rms)
= 10 mV
− 35 − mV/kHz
Level shift control (pin 2) (Fig.9)
±∆V
6
adjustment range 1.6 2.0 − V
−(∆V
6
/∆V
2
) adjustment gain − 1.7 − V
V
6
output voltage at V
2
= V
5;
V
20(rms)
≤ 5 µV −−0.3 V
Low-pass filter at pin 8
Output voltage at I
7
= 0 mA;
V
8
V
20(rms)
≤ 5 µV − 2.2 − V
R
8(int)
Internal resistance 12 25 50 kΩ
SYMBOL PARAMETER MIN. TYP. MAX. UNIT
V
6
∆
V
6
T∆
--------------
V
6
∆
20 V
20
log∆
----------------------------