STV0502
CCD SENSORS ANALOG PROCESSOR IC
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SERIAL BUS CONTROL
VIDEO
CORRELATED DOUBLE SAMPLING OF THE
CCD SIGNAL
DIGITALLY CONTROLLED VARIABLE AMPLI-
FIER AND BLACK CLAMP LEVEL
8 BITS PIXEL RATE ADC
AUDIO
MICROPHONE PREAMP WITH SWITCHABLE
AGC (RANGE 34dB - 60dB) OR FIXED GAIN
TQFP44 Full (10 x 10 x 1.40mm)
(Plastic Quad Flat Pack)
ORDER CODE :
STV0502
DESCRIPTION
The chip integrates the analog functions needed in
a CCD Video Camera, more particularly for video-
conferencing purpose.
The CCD signal is sampled, amplified to a useful
level and digitized by an 8 bits ADC. The gain of the
amplifier and the black level clamp can be adjusted
by a serial bus.
PIN CONNECTIONS
BLACK_REF
AGC LEVEL
TEST ONLY
NOT USED
OB_CAP
The audio microphone preamplifier allows a micro-
phone to be connected to the chip, which outputs
a differential audio line level signal ready for digital
conversion or straight amplification. The preampli-
fier incorporates an AGC to adapt to the income
signal level. The AGC is switchable ON/OFF by the
serial interface.
GND
GND
V
BOT
V
TOP
V
CC
44 43 42 41 40 39 38 37 36 35 34
VAGCIN
CDS_OUT
CDS_REF
CDS_IN
V
SS
NOT USED
NOT USED
DATA7
DATA6
DATA5
DATA4
1
2
3
4
5
6
7
8
9
10
11
12 13 14 15 16 17 18 19 20 21 22
33
32
31
30
29
28
27
26
25
24
23
V
BIAS
V
CC
AF_OUT-
AF_OUT+
CAGC
ACC
MIC_REF
MICRO_IN
GND
ADC_CLOCK
SCLK
DATA3
DATA2
DATA1
DATA0
SDATA_IO
OB
FCDS
V
DD
V
DD
V
SS
FS
V
CC
October 1998
1/15
0502-01.EPS