XRD98L63

VDD to GND ....................................................+6.6V
VRT & VRB ............................V_DD +0.5 to GND -0.5V
VIN ......................................V_DD +0.5 to GND -0.5V
All Inputs .............................V_DD +0.5 to GND -0.5V
All Outputs ...........................V_DD +0.5 to GND -0.5V
Storage Temperature ........................-65 to 150
Lead Temperature (Soldering 10 seconds)..... 300
Maximum Junction Temperature ......................150
Package Power Dissipation Ratings (TA= +70)
TQFP................................................. _JA = 105/W
ESD ................................................................2000V

Notes:

1 Stresses above those listed as "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation at or above this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

2 Any input pin which can see a value outside the absolute maximum ratings should be protected by Schottky diode clamps from input pin to the supplies. All inputs have protection diodes which will protect the device from shorttransients outside the supplies of less than 100mA for less than 100µs.

3 VDD refers to AVDD, OVDD and DVDD. GND refers to AGND, OGND and DGND.

The XRD98L63 is a complete, low power CCD Image Digitizer for digital motion and still cameras. The product includes a high bandwidth differential Correlated Double Sampler (CDS), 10-bit Programmable Gain Amplifier (PGA) with pixel rate gain switching, 12- bit Analog-to-Digital Converter (ADC) and improved digitally controlled black level auto-calibration circuitry with programmable pixel averaging, hot pixel clipping, and a Digital Noise Suppression (DNS) filter.

The Correlated Double Sampler (CDS) subtracts the CCD output signal black level from the video level. Common mode and power supply noise are rejected by the differential CDS input stage.

The PGA is digitally controlled with 10-bit resolution on a dB scale, resulting in a gain range of 6dB to 36dB with 0.047dB per LSB of the gain code. The PGA can be programmed to switch gain every pixel, in a user defined pattern of up to 4 different gains. Our proprietary control logic allows a camera system to set the desired gain ratios for color balance. The system gain can then be changed by writing to a single register, and the color balance will be maintained.

The black level auto-calibration circuit averages the results of the Optical Black pixels to compensate for any internal offset of the XRD98L63 as well as black level offset from the CCD. The calibration logic uses proprietary digital filters to eliminate line-to-line offset noise and noise due to hot pixels in the Optical Black areas.

The PGA and black level auto-calibration are controlled through a simple 3-wire serial interface. The timing circuitry is designed to enable users to select a wide variety of available CCD and image sensors for their applications. Readback of the serial data registers is available from the digital output bus. The XRD98L63 is packaged in 48-lead TQFP to reduce space and weight, and is suitable for hand-held and portable applications.