AD9979_15 Datasheet, PDF (1/56 Pages) Analog Devices – 14-Bit, CCD Signal Processor with Precision Timing Core

14-Bit, CCD Signal Processor with
Precision Timing Core
AD9979
FEATURES
1.8 V analog and digital core supply voltage
Correlated double sampler (CDS) with –3 dB, 0 dB, +3 dB, and
+6 dB gain
6 dB to 42 dB 10-bit variable gain amplifier (VGA)
14-bit 65 MHz analog-to-digital converter
Black-level clamp with variable level control
Complete on-chip timing generator
Precision Timing™ core with 240 ps resolution @ 65 MHz
On-chip 3 V horizontal and RG drivers
General-purpose outputs (GPOs) for shutter and system
support
7 mm × 7 mm, 48-lead LFCSP
Internal LDO regulator circuitry
APPLICATIONS
Professional HDTV camcorders
Professional/high end digital cameras
Broadcast cameras
Industrial high speed cameras
GENERAL DESCRIPTION
The AD9979 is a highly integrated CCD signal processor for
high speed digital video camera applications. Specified at pixel
rates of up to 65 MHz, the AD9979 consists of a complete
analog front end with analog-to-digital conversion, combined
with a programmable timing driver. The Precision Timing core
allows adjustment of high speed clocks with approximately
240 ps resolution at 65 MHz operation.
The analog front end includes black-level clamping, CDS, VGA,
and a 65 MSPS, 14-bit analog-to-digital converter (ADC). The
timing driver provides the high speed CCD clock drivers for RG,
HL, and H1 to H4. Operation is programmed using a 3-wire
serial interface.
Available in a space-saving, 7 mm × 7 mm, 48-lead LFCSP,
the AD9979 is specified over an operating temperature range of
−25°C to +85°C.
CCDINP
CCDINM
FUNCTIONAL BLOCK DIAGRAM
REFT REFB
AD9979
VREF
CDS
VGA
–3dB, 0dB, +3dB, +6dB
6dB TO 42dB
ADC
CLAMP
14 _DOUT
D0 TO D13
LDOOUT
LDO
RG
HL
H1 TO H4
4
HORIZONTAL
DRIVERS
INTERNAL CLOCKS
PRECISION
TIMING
CORE
SYNC
GENERATOR
CLI
INTERNAL
REGISTERS
GPO1 GPO2
HD VD
Figure 1.
SL
SCK
SDI
Rev. C
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