The AD7862 is a high speed, low power, dual 12-bit A/D converter that operates from a single +5 V supply. The part contains two 12-bit ADCs with four input channels. It supports simultaneous sampling and conversion with a throughput time of 4 µs.
The AD7862 is a dual 12‑bit analog‑to‑digital converter that offers simultaneous sampling of two channels with four analog inputs. It operates from a single +5 V supply, supports three input‑range options (+10 V, +2.5 V, 0‑2.5 V) and includes on‑chip reference, track/hold amplifiers, and a high‑speed parallel interface.
Key features include a maximum throughput of 250 kSPS, typical power consumption of 60 mW, a conversion time of 3.6 µs for both channels, and tight aperture‑delay matching. The device is supplied in multiple package options and includes over‑voltage protection on the analog inputs.
| Resolution | 12 Bits |
|---|---|
| Small‑Signal Bandwidth | 3 MHz (typ) |
| Aperture Delay | 20 ns (typ) |
| Power Dissipation (Normal Mode) | 75 mW max, typically 60 mW |
| Conversion Time (Both Channels) | 3.6 µs max |
In normal mode the device typically consumes about 60 mW, with a maximum of 75 mW.
The conversion time for both channels is specified as up to 3.6 µs.
Three versions exist: AD7862‑10 with ±10 V range, AD7862‑3 with ±2.5 V range, and AD7862‑2 with 0‑2.5 V unipolar range.
The device supports a dual 250 kSPS sampling rate.