TEA6821T Просмотр технического описания (PDF) - Philips Electronics
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TEA6821T Datasheet PDF : 47 Pages
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Philips Semiconductors
ICE car radio
Preliminary specification
TEA6821T
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
V29-4
maximum output voltage
(RMS value)
R27-24
C27-4, C24-4
R29-4
C29-4
input resistance
input capacitance
output resistance
output capacitance
FM IF2 limiter
220 270 −
mV
300 330 360 Ω
−
−
5
pF
300 330 360 Ω
−
−
5
pF
V1-2/V37-35
C37-4
R1-2
C1-2
V1-2
limiter gain
input capacitance
output resistance
output capacitance
limiter output voltage
(peak-to-peak value)
see Fig.10
−
74
−
dB
−
−
5
pF
−
−
1.0 kΩ
10
15
20
pF
500 700 −
mV
FM demodulator
fmod = 1kHz; deviation = 22.5 kHz; Rg= 50 Ω; V37-35 = 10 mV; with de-emphasis = 50 µS; coil quality = 15 unless
otherwise specified.
V47-4
R47out
B
MPX output (RMS value)
output resistance
AF bandwidth
160 200 240 mV
−
−
500 Ω
200 −
−
kHz
V43-4
R43out
B
MPX output for RDS (RMS value)
output resistance
AF bandwidth
160 200 240 mV
−
−
500 Ω
200 −
−
kHz
V37-35
V37-35
start of limiting (RMS value)
input voltage for
signal-plus-noise-to-noise ratio
(RMS value)
αAF = −3 dB
−
see Fig.11 for pin 47
(MPXOUT) and Fig.12 for
pin 43 (RDS/AMSTOP)
40
60
µV
S+N/N = 26 dB
−
40
55
µV
S+N/N = 46 dB
−
100 140 µV
S + N/N
signal-plus-noise-to-noise ratio
66
72
−
dB
V43FM/V43AM suppression
V47FM/V47AM suppression
∆f = 22.5 kHz;
55
60
−
dB
fmodAM = 1 kHz;
mAM = 30%;
V37-35 = 3 mV to 300 mV
V37-35 = 1 mV to 300 mV 55
60
−
dB
September 1993
13
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