AD9826 is a 16-Bit 15 MSPS A/D Converter chip produced by Analog Devices. It supports 3-Channel 16-Bit Operation up to 15 MSPS and 1-Channel 16-Bit Operation up to 12.5 MSPS. It also supports Correlated Double Sampling, 1~6� Programmable Gain, �300 mV Programmable Offset, Input Clamp Circuitry, Internal Voltage Reference, Multiplexed Byte-Wide Output, Optional Single Byte Output Mode, 3-Wire Serial Digital Interface, 3 V/5 V Digital I/O Compatibility, 28-Lead SSOP Package and Low Power CMOS: 400 mW (Typ) Power-Down Mode Available.
The AD9826 is a complete 16‑bit imaging signal processor designed for flat‑bed scanners, digital copiers, and machine‑vision applications. It integrates input clamps, correlated double sampling, programmable gain amplifiers and a high‑performance 16‑bit A/D converter in a 3‑channel architecture.
The device operates from a single 5 V supply, consumes about 400 mW in 3‑channel mode, and is offered in a 28‑lead 5.3 mm SSOP package. Detailed specifications, pin descriptions, timing diagrams and mechanical dimensions are provided in the datasheet.
| Resolution | 16 Bits |
|---|---|
| Maximum conversion rate (3‑Channel Mode with CDS) | 30 MSPS |
| Power consumption (3‑Channel Mode) | 400 mW (Typ) |
| Package | 28‑Lead 5.3 mm SSOP |
| Supply voltage (AVDD) | 5 V (typical 4.75‑5.25 V) |
The programmable input range is 2.0 Vpp or 4.0 Vpp.
The device is rated for operation from –40 °C to +85 °C.
It can operate in 1‑, 2‑, or 3‑channel modes with correlated double sampling.
The AD9826 uses a 3‑wire serial digital interface (SCLK, SLOAD, SDATA).