AD9898 Datasheet, PDF (1/52 Pages) Analog Devices – CCD Signal Processor with Precision Timing™ Generator

FEATURES
Correlated Double Sampler (CDS)
6 dB to 40 dB Variable Gain Amplifier (VGA)
Black Level Clamp with Variable Level Control
Complete On-Chip Timing Generator
Precision Timing Core with 1 ns Resolution
On-Chip: 2-Channel Horizontal and
1-Channel RG Drivers
2-Phase H-Clock Modes
4-Phase Vertical Transfer Clocks
Electronic and Mechanical Shutter Modes
On-Chip Sync Generator with External Sync Option
Space Saving 48-Lead LFCSP Package
APPLICATIONS
Digital Still Cameras
Digital Video Camcorders
CCD Signal Processor with
Precision Timing^™ Generator
AD9898
GENERAL DESCRIPTION
The AD9898 is a highly integrated CCD signal processor for
digital still camera and digital video camera applications. It
includes a complete analog front end with A/D conversion
combined with a full function programmable timing generator.
A Precision Timing core allows adjustment of high speed clocks
with 1 ns resolution at 20 MHz operation.
The AD9898 is specified at pixel rates as high as 20 MHz. The
analog front end includes black level clamping, CDS, VGA, and
a 10-bit A/D converter. The timing generator provides all the
necessary CCD clocks: RG, H-clocks, V-clocks, sensor gate
pulses, substrate clock, and substrate bias pulse. Operation is
programmed using a 3-wire serial interface.
Packaged in a space saving 48-Lead LFCSP, the AD9898 is
specified over an operating temperature range of –20°C to +85°C.
FUNCTIONAL BLOCK DIAGRAM
AD9898
6dB TO 40dB
CDS
VGA
REFT REFB
VREF
ADC
10
DOUT
RG
H1, H2
V1, V2, V3, V4
VSG1, VSG2
HORIZONTAL
2
DRIVERS
4
V-H
CONTROL
2
CLAMP
INTERNAL CLOCKS
PRECISION
TIMING
GENERATOR
SYNC
GENERATOR
INTERNAL
REGISTERS
DCLK1
FD/DCLK2
MSHUT
STROBE
VSUB SUBCK
HD VD SYNC CLI
SL SCK SDATA
REV. 0
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