14-Bit, CCD Signal Processor with

Precision Timing™ Core

AD9979

Rev. Sp0

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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 package

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. 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

package, the AD9979 is specified over an operating temperature

range of −25°C to +85°C.

FUNCTIONAL BLOCK DIAGRAM

AD9979

SYNC

GENERATOR

PRECISION

TIMING

CORE

INTERNAL CLOCKS

HORIZONTAL

DRIVERS

HL

RG

H1 TO H4

4

HD

VD

INTERNAL

REGISTERS

SL

SCK

SDATA

CLI

CLAMP

D0 TO D13

DOUT

CCDINP

6dB TO 42dB

VGA

ADC

CDS

14

REFT

REFB

VREF

–3dB, 0dB, +3dB, +6dB

LDOOUT

LDO

CCDINM

Figure 1.