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.
MPX input overdrive margin
THD = 1%
4
V44-4, V41-4
AF output voltage (RMS value)
800
V44-4/V41-4
difference of output voltage
−
Ro44, Ro41
output resistor
−
RImin
minimum load resistor
12
I44, I41
maximum output current
150
V44-4, V41-4
DC output voltage
3.3
α
channel separation (adjusted;
40
a typical roll-off at fMPX = 38 kHz of
1 dB is internally compensated)
THD
total harmonic distortion
−
S+N/N
signal-plus-noise-to-noise ratio
f = 20 Hz to 20 kHz
74
Carrier and harmonic suppression at the output (note to the stereo decoder).
α19
pilot signal
α38
α57(4)
subcarrier
α76
α2(2)
α3(3)
α57(4)
α67(5)
intermodulation
traffic radio (ARI)
subsidiary communications
authorization
α114(6)
α190(7)
adjacent channel frequency
αrr
ripple rejection at output
Mono/stereo control
f = 19 kHz
−
f = 38 kHz
−
f = 57 kHz
−
f = 76 kHz
−
fmod = 10 kHz; fspur = 1 kHz −
fmod = 13 kHz; fspur = 1 kHz −
f = 57 kHz
−
f = 67 kHz
70
f = 114 kHz
−
f = 190 kHz
−
fr = 100 Hz; Vr = 100 mVeff −
Vipil
pilot threshold voltage
stereo on
−
mono on
8
∆Vipil
switch hysteresis Vion/Vioff
−
The stereo decoder can be set to mono via the I2C-bus
Pilot presence indication via I2C-bus
External Mono/stereo control
V17 − 0.75V21 control voltage channel separation see Fig.21
α = 6 dB
−
α = 16 dB
−
Muting functions (mute via I2C-bus)
αmute
tuned mute
60
∆V44, ∆V41
DC offset voltage
−50
αmute
radio mute (in combination with
80
tuned mute)
∆V44, ∆V41
DC offset voltage
−300
TYP.
−
900
−
−
−
−
3.8
−
0.1
80
50
50
46
60
60
58
70
−
80
70
30
24
20
2
−80
−40
−
−
−
−
MAX.
−
1000
±1
130
−
−
4.3
−
0.3
−
−
−
−
−
−
−
−
−
−
−
−
30
−
−
−
−
−
+50
−
+300
UNIT
dB
mV
dB
Ω
kΩ
µA
V
dB
%
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
mV
mV
dB
mV
mV
dB
mV
dB
mV
September 1993
17
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