TEA6845H Просмотр технического описания (PDF) - NXP Semiconductors.
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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.
DAA TEMPERATURE COMPENSATION: PIN DAATD
Isource
compensation diode
source current
0.2 V < VDAATD < 1.5 V
TCsource
temperature coefficient of 0.2 V < VDAATD < 1.5 V;
compensation diode
Tamb = −40 to +85 °C
source current
−50
−300
IF counter (FM IF or AM IF2 counter)
NIF
IF counter length for
−
AM and FM
Tcount(IF)
IF counter period
data byte 4: bit 7 = 1
−
data byte 4: bit 7 = 0
−
Rprecount
FM IF counter prescaler data byte 4: bit 3 = 1
−
ratio
data byte 4: bit 3 = 0
−
Reference frequency for car sound processor IC; note 3
REFERENCE FREQUENCY DIVIDER
Nref
crystal oscillator divider
−
ratio
fref
reference frequency
fxtal = 20.5 MHz
−
VOLTAGE GENERATOR; PIN FREF
Vo(p-p)
AC output voltage
60
(peak-to-peak value)
VO
DC output voltage
3.2
Ro
output resistance
−
RL(min)
minimum load resistance
1
AM signal channel
AM RF AGC STAGE INPUTS: PINS AMMIX1IN1 AND AMMIX1IN2
Vi(p)
RF input voltage for AGC data byte 5: bit 5 = 0, bit 6 = 0 −
start level (peak value)
data byte 5: bit 5 = 1, bit 6 = 0 −
data byte 5: bit 5 = 0, bit 6 = 1 −
data byte 5: bit 5 = 1, bit 6 = 1 −
AM IF AGC STAGE INPUTS: PINS AMIF2IN AND AMIF2DEC
Vi(p)
IF2 input voltage (peak AGC start level
value)
0.20
AM RF AGC CURRENT GENERATOR OUTPUT: PIN IAMAGC
Isink(max)
maximum AGC sink
VAMMIX1IN1 > 500 mV
−
current
(peak value)
Ro
output resistance
IIAMAGC = 1 µA
1
Co
output capacitance
−
TYP.
−40
−
8
2
20
10
100
272
75.368
100
3.4
−
−
150
275
400
525
0.27
15
−
5
MAX.
−30
+300
−
−
−
−
−
−
−
170
3.9
50
−
−
−
−
−
0.35
−
−
7
UNIT
µA
1----0K---–---6-
bit
ms
ms
kHz
mV
V
kΩ
MΩ
mV
mV
mV
mV
V
mA
MΩ
pF
2003 Feb 04
15
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