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TEA6845H Datasheet PDF : 49 Pages
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Philips Semiconductors
New In Car Entertainment (NICE) car radio
Product specification
TEA6845H
SYMBOL
PARAMETER
CONDITIONS
MIN.
AM IF2 AGC STAGE: PINS AMIF2IN AND AMIF2DEC; note 8
Vi
input voltage
for α = −10 dB audio
attenuation
VAGC(start)
VAGC(stop)
VAGC(ctrl)
∆AGC
AGC start voltage
AGC stop voltage
AGC control voltage
AGC range
AM soft mute on
−
AM soft mute off
−
input carrier voltage
−
maximum input peak voltage 1
Vi = 1 mV
4.1
between start and stop of
−
AGC; m = 0.8
Ri
input resistance
1.8
Ci
input capacitance
−
AM DETECTOR
Vsens(rms)
sensitivity voltage
(RMS value)
m = 0.3; fmod = 400 Hz;
BAF = 2.5 kHz; Rgen = 2 kΩ;
note 8
(S+N)/N = 26 dB
−
(S+N)/N = 46 dB
−
(S+N)/N
THD
RR
tsw
tsettle
maximum signal plus
noise-to-noise ratio
total harmonic distortion
ripple rejection
FM to AM switching time
AM AGC settling time
m = 0.3; fmod = 400 Hz;
54
BAF = 2.5 kHz; Rgen = 2 kΩ
BAF = 2.5 kHz; CAGC = 22 µF;
AM IF2 AGC input
Vi = 100 µV to 500 mV (RMS)
m = 0.8; fmod = 400 Hz
−
m = 0.9; fmod = 400 Hz
−
m = 0.8; fmod = 100 Hz
−
m = 0.9; fmod = 100 Hz
−
VDDA2(ripple) = 100 mV (RMS); 30
fripple = 100 Hz
CAGC = 22 µF
−
CAGC = 22 µF
normal operation
−
test mode
−
Output: pin AMAFIF2
Vo(rms)
Ro
AM IF2 output voltage
(RMS value)
output resistance
AM stereo; m = 0
minimum at Vi = 14 µV
1.5
maximum at Vi = 5.0 mV 130
AM mono; m = 0.3;
240
fmod = 400 Hz;
Vi = 100 µV to 500 mV (RMS)
AM stereo
−
AM mono
−
TYP.
75
6
14
−
4.3
89
2
−
45
600
60
0.5
1
1.25
1.75
40
1 000
−
−
3
180
290
−
−
MAX.
120
10
30
−
4.7
−
2.2
5
65
900
−
1
2
2.5
3.5
−
1 500
1 800
180
4.5
230
340
500
500
UNIT
µV
µV
µV
V
V
dB
kΩ
pF
µV
µV
dB
%
%
%
%
dB
ms
ms
ms
mV
mV
mV
Ω
Ω
2003 Feb 04
18
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