The AD7933/AD7934 are 12-bit and 10-bit, high speed, low power, successive approximation (SAR) ADCs. The parts operate from a single 2.7 V to 5.25 V power supply and feature 4 analog input channels, an on-chip 2.5 V reference, and 70 dB SINAD with a maximum 2 µA shutdown mode.
The AD7933 (10‑bit) and AD7934 (12‑bit) are successive‑approximation ADCs that operate from a single 2.7 V to 5.25 V supply. They provide four analog input channels with a sequencer and support single‑ended, pseudo‑differential, or fully differential configurations. An on‑chip 2.5 V reference can be used internally or overridden with an external source.
Both devices feature low power consumption (as low as 6 mW at 3 V) and a high‑speed parallel interface that supports word‑ and byte‑mode transfers. Detailed specifications cover dynamic performance, timing, absolute maximum ratings, and recommended layout practices.
| Throughput Rate | 1.5 MSPS |
|---|---|
| Supply Voltage Range (Vop) | 2.7 V to 5.25 V |
| Power Dissipation (Normal Mode, Vop=5 V) | 13.5 mW max |
| Resolution | 10 bits (AD7933) / 12 bits (AD7934) |
Both devices can sample up to 1.5 MSPS.
The ADC includes an accurate on‑chip 2.5 V reference.
The commercial (B version) operates from –40 °C to +85 °C.