Product Descriptions
The AD9840A 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 AD9840A’s signal chain consists of an input clamp, correlated double sampler (CDS), digitally controlled variable gain amplifier (VGA), black level clamp, and 10-bit A/D converter. Additional input modes are provided for processing analog video signals.
The internal registers are programmed through a 3-wire serial digital interface. Programmable features include gain adjustment, black level adjustment, input configuration, and power-down modes.
The AD9840A operates from a 3 V power supply, typically dissipates 155 mW, and is packaged in a 48-lead LQFP.
Product Features
40 MSPS Correlated Double Sampler (CDS)
4 dB ± 6 dB Variable CDS Gain with 6-Bit Resolution
2 dB to 36 dB 10-Bit Variable Gain Amplifier (VGA)
Low Noise Clamp Circuits
Analog Preblanking Function
10-Bit 40 MSPS A/D Converter
Auxiliary Inputs with VGA and Input Clamp
3-Wire Serial Digital Interface
3 V Single Supply Operation
Low Power: 155 mW @ 3.0 V Supply
48-Lead LQFP Package
Product Applications
Digital Video Camcorders
Digital Still Cameras
Industrial Imaging
Product Specifications
| Attribute | Attribute value |
| ANSM-Part# | ANSM-AD9840AJSTZ |
| Category | Integrated Circuits (ICs) |
| Interface | |
| Sensor and Detector Interfaces | |
| Manufacturer | - |
| Series | - |
| Packaging | Tray |
| Part Status | Discontinued at DigiKey |
| DigiKey Programmable | Not Verified |
| Type | CCD Signal Processor, 10-Bit |
| Input Type | Logic |
| Output Type | Logic |
| Operating Temperature | -20°C ~ 75°C |
| Mounting Type | Surface Mount |
| Package / Case | 48-LQFP |
| Supplier Device Package | 48-LQFP (7x7) |
| Base Product Number | AD9840 |
Product Photos
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