AD9844A |
RFQ for AD9844A Required Field |
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| Technical/Catalog Information | AD9844AJST |
| Vendor | Analog Devices Inc |
| Category | Integrated Circuits (ICs) |
| Package / Case | 48-LQFP |
| Packaging | Tray |
| Type | CCD Signal Processor |
| Interface | 3-Wire Serial |
| Supply Voltage | 2.7 V ~ 3.6 V |
| Current - Supply | - |
| Input Type | Logic |
| Output Type | Logic |
| RoHS Status | RoHS Non-Compliant |
| Other Names | AD9844AJST AD9844AJST |
| Product | Manufacturers | Pack | D/C |
| AD9844A | Analog Devices | - | - |
The AD9844A is a complete analog signal processor for CCD applications. It features a 20 MHz single-channel architecture designed to sample and condition the outputs of interlaced and progressive scan area CCD arrays. The AD9844A's signal chain consists of an input clamp, correlated double sampler (CDS), digitally controlled variable gain amplifier (VGA), black level clamp, and 12-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 AD9844A operates from a single 3 V power supply, typi-cally dissipates 78 mW, and is packaged in a 48-lead LQFP.
Typical Application |
Features |
| Digital Still CamerasDigital Video CamcordersPC Cameras | 20 MSPS Correlated Double Sampler (CDS)4 dB 6 dB Variable CDS Gain with 6-Bit Resolution2 dB to 36 dB 10-Bit Variable Gain Amplifier (VGA)Low Noise Clamp CircuitsAnalog Preblanking Function12-Bit 20 MSPS A/D ConverterAuxiliary Inputs with VGA and Input Clamp3-Wire Serial Digital Interface3 V Single Supply OperationLow Power: 65 mW @ 2.7 V Supply48-Lead LQFP Package |
Parameter |
With RespectTo | Min | Max | Unit |
| AVDD1, AVDD2 DVDD1, DVDD2 DRVDD Digital Outputs SHP, SHD, DATACLK CLPOB, CLPDM, PBL SCK, SL, SDATA VRT, VRB, CMLEVEL BYP1-4, CCDIN Junction Temperature Lead Temperature (10 sec) |
AVSS DVSS DRVSS DRVSS DVSS DVSS DVSS AVSS AVSS |
0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 |
+3.9 +3.9 +3.9 DRVDD + 0.3 DVDD + 0.3 DVDD + 0.3 DVDD + 0.3 AVDD + 0.3 AVDD + 0.3 150 300 |
V V V V V V V V V °C °C |
