STV0502 Datasheet, PDF (1/15 Pages) STMicroelectronics – CCD SENSORS ANALOG PROCESSOR IC

STV0502
CCD SENSORS ANALOG PROCESSOR IC
. _{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.
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.
PIN CONNECTIONS
VAGCIN
CDS_OUT
CDS_REF
CDS_IN
V_SS
NOT USED
NOT USED
DATA7
DATA6
DATA5
DATA4
44 43 42 41 40 39 38 37 36 35 34
1
33
2
32
3
31
4
30
5
29
6
28
7
27
8
26
9
25
10
24
11
23
12 13 14 15 16 17 18 19 20 21 22
V_BIAS
V_CC
AF_OUT-
AF_OUT+
CAGC
ACC
MIC_REF
MICRO_IN
GND
ADC_CLOCK
SCLK
October 1998
1/15