REV. A
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a
AD9816
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703 © Analog Devices, Inc., 1998
Complete 12-Bit 6 MSPS
CCD/CIS Signal Processor
FUNCTIONAL BLOCK DIAGRAM
VINR
VINB
OFFSET
CLAMP/CDS
AVDD AVSS CAPT CAPB CML PGAOUT VREF DVDD DVSS DRVDD DRVSS
OEB
DOUT
11:0
SCLK
SLOAD
SDATA
CDSCLK2 ADCCLK
CLAMP/CDS
+
DAC
DAC
+
DAC
PGA
PGA
BANDGAP
REFERENCE
MUX
REGISTER
CONFIGURATION
REGISTER
R
G
B
8
OFFSET
REGISTERS
R
G
B
GAIN
REGISTERS
DIGITAL
CONTROL
PORT
12
6100mV
1X–6X
MUX
PGA
+
CLAMP/CDSVING
12-BIT
ADC
CDSCLK1
AD9816
8
FEATURES
12-Bit 6 MSPS A/D Converter
No Missing Codes Guaranteed
3-Channel or 1-Channel Operation
Correlated Double Sampling
8-Bit Programmable Gain
8-Bit Offset Adjustment
PGA Output Monitor
Input Clamp Circuitry
Internal Voltage Reference
3-Wire Serial Interface
+3.3 V/+5 V Digital Output Compatibility
44-Lead MQFP Package
Low Power CMOS: 420 mW Typ
PRODUCT DESCRIPTION
The AD9816 is a complete analog signal processor for CCD
and CIS applications. Included is all the necessary circuitry to
perform three-channel conditioning and sampling for a variety
of imaging applications.
The signal chain consists of an input clamp, correlated double
sampler (CDS), offset adjust DAC, programmable gain ampli-
fier and a 12-bit A/D converter. The CDS and input clamp may
be disabled for CIS applications.
The internal registers are programmed using a 3-wire serial
interface and provide adjustment of the gain, offset and operat-
ing mode.
The AD9816 operates from a +5 V supply, typically consumes
420 mW of power and is packaged in a 44-lead MQFP.