AD9805

Features:

Pin Compatible 12-Bit and 10-Bit Versions
12-Bit/10-Bit 6 MSPS A/D Converter
Integrated Triple Correlated Double Sampler
3-Channel, 2 MSPS Color Mode
1 4 Analog Programmable Gain Amplifier
Pixel-Rate Digital Gain Adjustment
Pixel-Rate Digital Offset Adjustment
Internal Voltage Reference
No Missing Codes Guaranteed
Microprocessor-Compatible Control Interface
+3.3 V/+5 V Digital I/O Compatibility
Low Power CMOS: 500 mW
64-Pin PQFP Surface Mount Package


Pinout




Specifications

Respect	With Parameter To	Min	Max	Unit
AVDD AVSS DVDD AGND AVDD Clock Input Digital Outputs AIN, VREF Junction Temperature Storage Temperature Lead Temperature (10 sec)	AVSS AVDD DVSS DVSS DVDD DVSS DVSS AVSS	0.5 6.5 0.5 0.3 6.5 0.5 0.5 0.3 65	+6.5 +0.5 +6.5 +0.3 +6.5 DVDD + 0.5 AVDD + 0.3 AVDD + 0.3 +150 +150 +300	Volts Volts Volts Volts Volts Volts Volts Volts °C °C °C

Description

The AD9807 and AD9805 are complete CCD/CIS imaging decoders and signal processors on a single monolithic integrated circuit.  The input of the AD9807/AD9805 allows direct ac coupling of the charge-coupled device (CCD) or contact image sensor (CIS) output(s). The AD9807/AD9805 includes all the circuitry to perform three-channel correlated double sampling (CDS) and programmable gain adjustment of the CCD output; a 12-bit or 10-bit analog-to-digital converter (ADC) quantizes the analog signal. After digitization, the on-board digital signal processor (DSP) circuitry allows pixel rate offset and gain correc-tion. The DSP also corrects odd/even CCD register imbalance errors. A parallel control bus provides a simple interface to 8-bit microcontrollers.  The AD9807/AD9805 comes in a space saving 64-pin plastic quad flatpack (PQFP) and is specified over the commercial (0°C to +70°C) temperature range.  By disabling the CDS, the AD9807/AD9805 are also suitable for non-CCD applications, or applications that do not require CDS, such as CIS signal processing.