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AD9945: Complete 12-Bit 40 MHz CCD Signal Processor Data Sheet (Rev. C)12/1/2003PDF1840 kB
Overview
Features and Benefits
- 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 × 5 mm LFCSP
Product Details
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.
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| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| AD9945KCPZ | Material Declaration | Reliability Data | 32-Lead LFCSP (5mm x 5mm) | |
| AD9945KCPZRL7 | Material Declaration | Reliability Data | 32-Lead LFCSP (5mm x 5mm) | |
| Wafer Fabrication Data |
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