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HT82V842A -- 10-bit 20MSPS CCD Analog Signal
Processor
General Description
The HT82V842A is a CMOS single-chip signal processing device for CCD area sensors. It consists of a clamp circuit, Correlated Double Sampler (CDS), Programmable Gain Amplifier
(PGA), reference voltage generator, black level detection circuit, 20MHz 10-bit A/D converter (ADC), timing generator for internally required pulses, serial interface for internal function control and PGA gain control.
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Features
- Operating voltage: 2.7V~3.6V
- Low power consumption: 70mW (Typ.)
- Power down mode: less than 30µW
- Accepts a direct signal input to ADC or PGA at 1.0 VPP
(Typ.)
- CCD signal input level: 1.1 VP-P (Max.)
- 10-bit ADC (up to 20MHz)
- DNL: ±0.6 LSB (Typ.)
- Black level neutralizer, target setting: 16~127LSB
- Built-in serial interface
- Independent ADC input conversion clock and data
output clock
- Independent CDS and PGA gain control
- CDS: -1.94/0/6/12dB
- PGA: 0~24dB
- Wide gain range: -1.94~36dB
- High speed sample and hold circuit: pulse width 11ns
(Min.)
- 48-pin LQFP package
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