TEA6821T Datasheet, PDF (17/47 Pages) NXP Semiconductors – ICE car radio

Philips Semiconductors
ICE car radio
Preliminary specification
TEA6821T
SYMBOL
PARAMETER
CONDITIONS
MIN.
MPX input overdrive margin
THD = 1%
4
V_44-4, V_41-4
AF output voltage (RMS value)
800
V_44-4/V_41-4
difference of output voltage
−
R_o44, R_o41
output resistor
−
R_Imin
minimum load resistor
12
I₄₄, I₄₁
maximum output current
150
V_44-4, V_41-4
DC output voltage
3.3
α
channel separation (adjusted;
40
a typical roll-off at f_MPX = 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
α_rr
ripple rejection at output
Mono/stereo control
f = 19 kHz
−
f = 38 kHz
−
f = 57 kHz
−
f = 76 kHz
−
f_mod = 10 kHz; f_spur = 1 kHz −
f_mod = 13 kHz; f_spur = 1 kHz −
f = 57 kHz
−
f = 67 kHz
70
f = 114 kHz
−
f = 190 kHz
−
f_r = 100 Hz; V_r = 100 mV_eff −
V_ipil
pilot threshold voltage
stereo on
−
mono on
8
∆V_ipil
switch hysteresis V_ion/V_ioff
−
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)
α_mute
tuned mute
60
∆V₄₄, ∆V₄₁
DC offset voltage
−50
α_mute
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
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