TDA1596T データシートの表示（PDF） - Philips Electronics
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TDA1596T Datasheet PDF : 22 Pages
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Philips Semiconductors
IF amplifier/demodulator for FM radio
receivers
Product specification
TDA1596T
OPERATING CHARACTERISTICS
f = 10.7 MHz; VI = V20(rms) = 1 mV; deviation (∆f) = 22.5 kHz; modulation frequency (fm) = 400 Hz; de-emphasiss (pin 4)
= 50 µs; test circuit as per Fig.3; tuned circuit (QL = 19) aligned for symmetrical stop pulses; Tamb = + 25 °C; unless
otherwise specified
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
V4(rms)
V20(rms)
V18(rms)
V18(rms)
S/N
THD
αD
αD∆f
THD
THD
V3
AF output voltage (RMS value) at
180
V20(rms) = 10 mV
Start of limiting (FM, mute-off); (RMS value)
14
(Fig.13)
Dependence of signal-to-noise ratio (in noise
frequency band 250 Hz to 15 kHz, unweighted)
on input voltage
for S/N = 26 dB
−
for S/N = 46 dB
−
at V20(rms) = 10 mV; ∆f = 75 kHz
−
THD (FM, mute-on) at V20(rms) = 10 mV; ∆f = 75 −
kHz; fm = 1 kHz; without detuning; without
de-emphasis; I7 = 0 mA
Dynamic mute attenuation (Fig.14)
−
αD = 20log VV----4-4-----(--(-F-F---M-M------m,---m--u---u-t--e-t--e--–--–--o--o--f--fn----)-)--
with fm = 100 kHz; ∆f = 75 kHz
Slope of attenuation curve
−
THD (FM, mute-on) at V20(rms) = 10 mV;
∆f = 75 kHz; fm = 1 kHz;
detuning ≤± 25 kHz without
de-emphasis; I7 = 0 mA (Fig.15)
−
THD (FM, mute-off and compensated via
pin 3) at V20(rms) = 10 mV;
∆f = 75 kHz; fm = 1 kHz;
V7 = V5
−
Voltage range at pin 3 for THD compensation 0
AM suppression (FM, mute-off) with amplitude −
modulation at 30% input voltage range
V20 = 300 µV to 100 mV (Fig.16)
Power supply ripple rejection = 20log [∆V1/∆V4] 33
Mute attenuation (FM-off)
60
= 20log [V4(FM-on/V4(FM-off)]
200
220
mV
22
35
µV
15
−
µV
60
−
µV
82
−
dB
0.1
0.3
%
16
−
dB
0.8
−
dB/kHz
−
0.6
%
0.07
0.25
%
−
V5
V
65
−
dB
36
−
dB
−
−
dB
April 1991
10
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