XRD98L56AIV

Product Summary

The XRD98L56AIV is a complete CCD Image Digitizer for digital cameras. The product includes a high bandwidth differential Correlated Double Sampler (CDS), 8-bit digitally Programmable Gain Amplifier (PGA), 10-bit Analog-to-Digital Converter (ADC) and digital controlled black level auto-calibration circuitry. The Correlated Double Samler(CDS) of the XRD98L56AIV subtracts the CCD output signal black level from the video level. CDS inputs are designed to be used either differential or singleended. The auto calibration circuit com pensates for any internal offset of the XRD98L56AIV as well as black level offsetfrom the CCD. The PGA is digitally controlled with 8-bit resolution on a linear dB scale, resulting in a gain range of 6dB to 38dB with 0.125dB per LSB of the gain code. The PGA and black level auto-calibration of the XRD98L56AIV 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.

Parametrics

XRD98L56AIV absolute maximum ratings: (1)VDD to GND: +7.0V; (2)VRT & VRB: VDD +0.5 to GND -0.5V; (3)VIN: VDD +0.5 to GND -0.5V; (4)All Inputs: VDD +0.5 to GND -0.5V; (5)All Outputs: VDD +0.5 to GND -0.5V; (6)Storage Temperature: -65℃ to 150℃; (7)Lead Temperature (Soldering 10 seconds): 300℃; (8)Maximum Junction Temperature: 150℃; (9)Package Power Dissipation Ratings (TA= +70℃): TQFP: θJA = 54℃/W; ESD: 2000V.

Features

XRD98L56AIV features: (1)10-Bit Resolution ADC; (2)18 - 27MHz Maximum Sampling Rate; (3)Correlated Double Sampling (CDS); (4)Programmable Gain from 6dB to 38dB (PGA); (5)Digitally Controlled Analog Offset-Calibration; (6)CCD Black LeveOffset Compensation at Frame Rate; (7)CDS Clocks Sample Rising Edge or Falling Edge; (8)Single 5V or 3V Power Supply; (9)Low Power for Battery Applications: XRD9855/56: 250/300m W @ VDD = 5.0V; XRD98L55/L56: 120/150mW @ VDD = 3.0V; (10)50mA-Typ Current in Stand By Mode; (11)3-State DigitaOutputs; (12)ESD Protection to Over 2000V.

Diagrams