TDA9821 데이터 시트보기 (PDF) - Philips Electronics
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TDA9821 Datasheet PDF : 16 Pages
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Philips Semiconductors
Dual channel TV FM intercarrier
sound demodulator
Product specification
TDA9821
SYMBOL
PARAMETER
CONDITIONS
Output amplifiers AF1 (pin 8) and AF2 (pin 7) and overall performance
VO
Vo(rms)
DC output voltage
output signal (RMS value)
clipping level
IM
IO
∆Vo/Vo
∆Vo1/∆Vo2
∆VAF(1-2)
AC peak current
DC source current
absolute drift of AF output signals
relative drift of AF output signals
negative/positive difference between
output signals
Tamb = 0 to 70 °C
Tamb = 0 to 70 °C
50 µs de-emphasis
Ro
αcs(ar)
THD
output resistance
adjustment range of channel separation
total harmonic distortion
Rs = 1.1 kΩ;
Rpot = 2.2 kΩ
50 µs de-emphasis
pin 8
pin 7
αAM
S------N+-----N---
AM suppression of AF(1-2)
signal plus noise-to-noise ratio
50 µs de-emphasis;
m = 0.3; fAM = 1 kHz
50 µs de-emphasis;
in accordance with
“CCIR 468-3”
AFresp
LOW-level AF frequency response
HIGH-level AF frequency response
∆VAF(1-2) = −3 dB
AMres(rms) residual sound carrier signal and
harmonics (RMS value)
α8/7
crosstalk attenuation between
AF outputs
f = 50 to 12500 Hz
RR
supply voltage ripple rejection
VRR < 200 mV;
fr = 20 Hz to 200 kHz
VP = 5 V
VP = 8 V
RR
supply voltage ripple rejection with
fr = 20 Hz to 3 kHz;
improved application for VP = 5 V
see Fig.3 and note 2
VP = 4.5 V
VP = 4.75 V
VP = 5.0 V
VP = 5.5 V
MIN. TYP. MAX. UNIT
1.8
2.1
2.5
V
0.4
0.5
0.6
V
1.2
−
−
V
−
−
1.5
mA
−
−
2.0
mA
−
0.7
−
dB
−
0.2
−
dB
−
0.3
1.0
dB
−
100
−
Ω
1.5
−
−
dB
−
0.1
0.3
%
−
0.25 0.5
%
46
66
−
dB
64
68
−
dB
−
−
20
Hz
200
−
−
kHz
−
50
80
mV
60
70
−
dB
16
20
−
dB
24
28
−
dB
18
24
−
dB
21
27
−
dB
24
30
−
dB
21
27
−
dB
1996 Nov 20
7
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