AD9826 is a 16-bit 15MSPS A/D Converter chip from Analog Devices, which supports 3-channel 16-bit operation, up to 15MSPS, single-channel 16-bit operation, up to 12.5MSPS, 2-channel mode for single sensor odd/even outputs with correlated double sampling, 1~6 programmable gain, -300mV programmable offset, input clamp circuit, internal voltage reference, multiplexed byte-wide output, optional single byte output mode, 3-wire serial digital interface, 3V/5V digital I/O compatibility, 28-pin SSOP package, low-power CMOS: 400 mW (Typ) power-down mode available
The AD9826 is a 16‑bit imaging signal processor with a 3‑channel architecture 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 A/D converter, all powered from a single 5 V supply.
The document provides full electrical specifications, absolute‑maximum ratings, pin‑out details, timing diagrams, and typical performance curves, enabling designers to evaluate and integrate the device into imaging systems.
| Resolution | 16 Bits |
|---|---|
| Maximum Conversion Rate (3‑Channel, CDS) | 30 MSPS |
| Power Dissipation (3‑Channel Mode) | 400 mW |
| Operating Current (AVDD) | 75 mA |
| Package | 28‑Lead SSOP (5.3 mm) |
| Input Signal Range (Programmable) | 2.0 V/4.0 V p‑p |
The AD9826 can convert at up to 30 MSPS in 3‑Channel mode with CDS.
Typical power dissipation is 400 mW in 3‑Channel mode.
The programmable input range is 2.0 V to 4.0 V p‑p.
It is supplied in a 28‑lead SSOP package (5.3 mm).