AD7859/AD7859L are high-performance, low-power, single-supply 8-channel 12-bit ADCs with internal temperature compensation and a 2.5V reference
The AD7859 and AD7859L are 8‑channel, 12‑bit analog‑to‑digital converters that operate from a single 3 V to 5 V supply. The AD7859 offers up to 200 kSPS conversion rate, while the low‑power AD7859L runs at up to 100 kSPS. Both devices include system and self‑calibration options and flexible parallel I/O.
The datasheet details power‑management modes, including automatic power‑down after conversion, and provides full pin‑out, register maps, and timing specifications. It also lists absolute maximum ratings, recommended operating conditions, and application notes for battery‑powered systems, instrumentation, and high‑speed modems.
| Supply Voltage Range | 3.0 V to 5.5 V |
|---|---|
| Maximum Sampling Rate | 200 kSPS (AD7859) / 100 kSPS (AD7859L) |
| Normal‑Mode Power Consumption | 15 mW (Vpp = 3 V) for AD7859 |
The AD7859 operates from a single supply of 3.0 V to 5.5 V.
The AD7859 can sample at up to 200 kSPS, while the low‑power AD7859L can sample at up to 100 kSPS.
Both devices provide eight analog inputs that can be used as eight single‑ended or four pseudo‑differential channels.
Typical normal‑mode power dissipation is about 15 mW at a 3 V supply for the AD7859.