Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
SYMBOL
tst
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
µs
DAA output settling time
0.2 V < VDAAOUT < 8.25 V;
CL = 270 pF
−
−
30
RR
CL
ripple rejection
fripple = 100 Hz; VDDA4 = 1 mV
VDAAOUT < 8.0 V; FM mode
−
−
50
−
dB
pF
DAA output load
capacitance
−
270
DAA TEMPERATURE COMPENSATION: PIN DAATD
Isource
compensation diode
source current
0.2 V < VDAATD < 1.5 V
−50
−40
−30
µA
TCsource
temperature coefficient of 0.2 V < VDAATD < 1.5 V;
−3 × 10−10
−
+3 × 10−10 K−1
compensation diode
source current
Tamb = −40 to +85 °C
IF counter (FM IF or AM IF2 counter)
NIF
IF counter length for
AM and FM
−
8
−
bit
Tcount(IF)
IF counter period
data byte 4: bit 7 = 1
data byte 4: bit 7 = 0
data byte 4: bit 3 = 1
data byte 4: bit 3 = 0
−
−
−
−
2
−
−
−
−
ms
ms
20
10
100
Rprecount
FM IF counter prescaler
ratio
Reference frequency for car sound processor IC; note 3
REFERENCE FREQUENCY DIVIDER
Nref
crystal oscillator divider
ratio
−
−
272
−
−
fref
reference frequency
fxtal = 20.5 MHz
75.368
kHz
mV
VOLTAGE GENERATOR; PIN fref
Vo(p-p)
AC output voltage
60
100
170
(peak-to-peak value)
VO
DC output voltage
3.2
−
3.4
−
3.9
50
−
V
Ro
output resistance
kΩ
MΩ
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
−
−
−
−
150
275
400
525
−
−
−
−
mV
mV
mV
mV
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
value)
AGC start level
0.20
0.27
15
0.35
V
AM RF AGC CURRENT GENERATOR OUTPUT: PIN IAMAGC
Isink(max)
maximum AGC sink
current
VAMMIX1IN1 > 500 mV
(peak value)
−
−
mA
2001 Apr 12
15
NXP [ NXP ]
