1997 Feb 27 7
Philips Semiconductors Product specification
IF amplifier/demodulator for FM radio receivers TDA1597
Note
1.
External muting
V
16
muting voltage at I
2
=0 V
20
≤ 5 µV (RMS); see Fig.12 1.45 1.75 2.05 V
V
20
= 1 mV (RMS) 3.0 3.45 3.9 V
S steepness of control voltage
slope: 100 µV ≤ V
20
≤ 100 mV;
− 0.85 − V/dec
Internal mute α; note 1
α mute voltage V
16
≥ V
ref
− 0 − dB
V
16
= 0.77V
ref
1.5 − 4.5 dB
V
16
= 0.55V
ref
− 20 − dB
I
16
current for capacitor (pin 16)
charge current V
13
=0V −−8−µA
discharge current V
13
=0V − 120 −µA
charge current V
13
=V
ref
−−100 −µA
discharge current V
13
=V
ref
− 120 −µA
Level detector
R
6
output resistance pin 6 −−500 Ω
V
6
output voltage at I
2
=0 V
20
≤ 5 µV (RMS); see Fig.14 0.1 − 1.1 V
V
20
= 1 mV (RMS) 3.0 − 4.2 V
±200 kHz detuning 1.2 1.5 1.8 V
output voltage at V
2
=V
5
V
20
≤ 5 µV (RMS) −−0.3 V
∆V
6
output voltage at detuning ±45 kHz detuning −−0.2 V
TC temperature coefficient − 3.3 − mV/VK
∆f detuning frequency V
6
= 1.8 V; see Fig.13 90 − 160 kHz
S steepness of control voltage
slope: 50 µV ≤ V
20
≤ 50 mV;
1.4 1.7 2.0 V/dec
∆V
6
/∆f slope of output voltage at
detuning
∆f = 125 ±20 kHz − 35 − mV/kHz
S level shift adjustments
range by pin 2 ±∆V
6
/V
ref
0.42 0.5 − V/V
gain −∆V
6
/∆V
2
− 1.7 − V/V
range by pin 2 ±∆V
16
/V
ref
0.21 0.25 − V/V
gain −∆V
16
/∆V
2
− 0.85 − V/V
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
20∆ V
20
log 20 dB
∆V
16
∆ V
20
log
---------------------
=
20∆ V
20
log 20 dB
∆V
6
∆ V
20
log
---------------------
=
α 20
∆V
4FM MUTE– OFF–()
∆V
4FM MUTE– ON–()
-------------------------------------------------------log=
