1997 Feb 27 7
Philips Semiconductors Product specification
IF amplifier/demodulator for FM radio receivers TDA1597Note
1.
External muting
V16 muting voltage at I2=0 V
20 ≤5µV (RMS); see Fig.12 1.45 1.75 2.05 V
V20 = 1 mV (RMS) 3.0 3.45 3.9 V
S steepness of control voltage slope: 100µV≤V20 ≤100 mV; −0.85 −V/dec
Internal mute α;note 1
αmute voltage V16 ≥ Vref −0−dB
V16 = 0.77Vref 1.5 −4.5 dB
V16 = 0.55Vref −20 −dB
I16 current for capacitor (pin 16)
charge current V13 =0V −−8−µA
discharge current V13 =0V −120 −µA
charge current V13 =V
ref −−100 −µA
discharge current V13 =V
ref −120 −µA
Level detector
R6output resistance pin 6 −−500 Ω
V6output voltage at I2=0 V
20 ≤5µV (RMS); see Fig.14 0.1 −1.1 V
V20 = 1 mV (RMS) 3.0 −4.2 V
±200 kHz detuning 1.2 1.5 1.8 V
output voltage at V2=V
5V
20 ≤5µV (RMS) −−0.3 V
∆V6output voltage at detuning ±45 kHz detuning −−0.2 V
TC temperature coefficient −3.3 −mV/VK
∆f detuning frequency V6= 1.8 V; seeFig.13 90 −160 kHz
S steepness of control voltage slope: 50µV≤V20 ≤50 mV; 1.4 1.7 2.0 V/dec
∆V6/∆f slope of output voltage at
detuning
∆f=125±20 kHz −35 −mV/kHz
S level shift adjustments
range by pin 2 ±∆V6/Vref 0.42 0.5 −V/V
gain −∆V6/∆V2−1.7 −V/V
range by pin 2 ±∆V16/Vref 0.21 0.25 −V/V
gain −∆V16/∆V2−0.85 −V/V
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
20∆V20
log 20 dB ∆V16
∆V20
log
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=
20∆V20
log 20 dB ∆V6
∆V20
log
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=
α20 ∆V4FMMUTE–OFF–()
∆V
4FM MUTE–ON–()
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