CS7620

Features:

·13-Bit A/D Conversion Using DRX™ Technology
·Backlight Compensation
·Supports three Input Ranges of 0.53V, 1.07V, and 1.60V
·Multi-Sync CCD Timing Generator
·High Resolution Output Mode
·Low Resolution (Preview) Output Mode for LCD Driver
·Integrated Correlated Double Sampler
·Digital Black Level Clamp
·Digital Outputs Selectable for 13, 12, or 10 Bits
·Two Integrated General Purpose DACs
·Low Power Consumption
·Power Down Mode
·High Speed Serial Interface
·Supports a Large Variety of Clock Input Frequencies
·Low power mode option


Pinout




Specifications

Parameter	Symbol	Min	Max	Unit
Power Supply Voltage	VAA1, VAA2, VAA3, VDD_Ring, VDDD	-0.3	7.0	V
Digital Input Voltage Range		GNDD-0.3	VDD + 0.3	V
Analog Input Voltage - AIN only	AIN	GNDA-(0.3)	VAAI+0.3	V
Input Current (except supply pins)			10	mA
Ambient Temperature Range		-	+70	°C
Lead Solder Temperature (10 s duration)		-	+260	°C
Storage Temperature Range		-65	+160	°C

Description

The CS7620 is a low-power analog front-end processor for interline or frame transfer CCD imagers. Main applications include digital still image cameras with up to 8k×8k pixels.

The architecture includes a correlated double sampler, black level clamp and a 13-bit A/D conversion module using patented DRX technology. In addition, CS7620 contains a timing generator, which supports common CCDs from IBM, and Polaroid. For CCDs using different timing signals, the internal timing generator can be bypassed.

CS7620 has 2 general purpose DACs available which can be used to drive motors for iris and shutter control.

CS7620 parameters can be programmed using a high speed 4-wire asynchronous digital interface.

CS7620 outputs digitized CCD data in either 13-bit, 12- bit or 10-bit format. 10-bit outputs are generated from the 13-bit A/D output by a programmable companding curve.