HT82V72中文资料6-channel 120MSPS CIS Analog Signal Processor with Timing Generator and Shading Correction数据手册Holtek规格书

描述 Description

The HT82V72 is a fully integrated device for CIS imaging application. It features two high performance 16-bit 3-channel 60MSPS analog signal processors, programmable timing generator and image sensor shading correction to sample and condition the outputs of CIS (Contact Image Sensor) array for highspeed double-sided scanner applications.

Each channel consists of a Sample and Hold Amplifier, SHA, a 9-bit Programmable Gain Amplifier, PGA, and an 8-bit offset correction Digital to Analog Converter, DAC. The PGA and offset DAC are programmed independently allowing unique values of gain and offset for the two 3-channel analog inputs. Each the 3-channel signals are routed to a 60MHz high performance Analog to Digital converter, ADC. Then an intelligent image sensor shading correction is mployed to unitize each sensor elements. The sensor data can be not only corrected but also averaged per line for black level calculation. The Video Processing Front End, VPFE, Interface multiplexes shaded ADC’s outputs in a two high-bytes of each ADC’s output or one 16-bit wide output of each ADC. A pixel clock PCLK transports the 16-bit wide data to the output port.

The internal registers are programmed through a 2-wire I2C or 3-wire/4-wire SPI interface, for timing control, gain, offset and operating mode adjustments.

 

特性 Features

• 3.3V operating voltage
• Programmable CIS module timing generator
• 8-bit programmable offset
• Internal voltage reference
• Flexible frame start/stop control mechanism
• 8/16-bit image data output in VPFE or EMIF interface
• 2-wire I2C interface
• 64-pin TQFP-EP package