TEA6840 Просмотр технического описания (PDF) - Philips Electronics
Номер в каталоге
Компоненты Описание
Список матч
TEA6840 Datasheet PDF : 44 Pages
| |||
Philips Semiconductors
New In Car Entertainment (NICE) car radio
Preliminary specification
TEA6840H
SYMBOL
PARAMETER
CONDITIONS
MIN.
IF counter (FM IF1/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 2
REFERENCE FREQUENCY DIVIDER
Rref
crystal oscillator divider
−
ratio
fref
reference frequency
fxtal = 20.5 MHz
−
VOLTAGE GENERATOR; PIN 15
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
RF AGC STAGE
Vi(RF)
Vi(IF2)
Isink(AGC)(max)
Ro
Co
Iatt
Idec
RF input voltage for AGC data byte 5 bit 5 = 0, bit 6 = 0 −
start level (pin 32)
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 −
IF2 input voltage (pin 45) AGC start level
0.5
maximum AGC sink
V32 > 500 mV (peak)
−
current (pin 29)
output resistance
I29 = 1 µA
1
(pin 29)
AM AGC current
−
generator output
capacitance (pin 29)
attack current AGC peak data byte 5 bit 5 = 1, bit 6 = 1; −
detector (pin 30)
V32-33 = 1 V; V30 = 3 V;
V45-48 = 0 V
decay current AGC peak data byte 5 bit 5 = 1, bit 6 = 1; −
detector (pin 30)
V32-33 = 0 V; V30-32 = 250 mV;
V30 = 3 V; V45-48 = 0 V
TYP.
8
2
20
10
100
272
75.368
100
3.4
−
−
375
500
625
750
0.85
15
−
5
3.15
2.6
MAX. UNIT
−
bit
−
ms
−
ms
−
−
−
−
kHz
170
mV
3.9
V
50
kΩ
−
MΩ
−
mV
−
mV
−
mV
−
mV
1
V
−
mA
−
MΩ
7
pF
−
mA
−
µA
1999 Jul 12
16
Share Link: 