AD9945: Complete 12-Bit 40 MHz CCD Signal Processor
The AD9945 is a complete analog signal processor for CCD applications. It features a 40 MHz single-channel architecture designed to sample and condition the outputs of interlaced and progressive scan area CCD arrays.
The AD9945’s signal chain consists of a correlated double sampler (CDS), a digitally controlled variable gain amplifier (VGA), a black level clamp, and a 12-bit A/D converter.
The internal registers are programmed through a 3-wire serial digital interface. Programmable features include gain adjustment, black level adjustment, input clock polarity, and power-down modes. The AD9945 operates from a single 3 V power supply, typically dissipates 140 mW, and is packaged in a space-saving 32-lead LFCSP.
AD9945 特点
- 40 MSPS Correlated Double Sampler (CDS)
- 6 dB to 40 dB 10-Bit Variable Gain Amplifier (VGA)
- Low Noise Optical Black Clamp Circuit
- Preblanking Function
- 12-Bit 40 MSPS A/D Converter
- No Missing Codes Guaranteed
- 3-Wire Serial Digital Interface
- 3 V Single-Supply Operation
- Low Power: 140 mW @ 3 V Supply
- Space-Saving 32-Lead 5 mm x 5 mm LFCSP
AD9945 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD9945KCPZ | 量产 | 32 ld LFCSP (5x5mm CP-32-2) | 32 | 商业 |
| AD9945KCPZRL7 | 量产 | 32 ld LFCSP (5x5mm CP-32-2) | 32 | 商业 |