Key facts
- Brand
- Analog Devices
- Model
- AD7938
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-09
Start here
Analog Devices AD7938/AD7939 Datasheet
Datasheet 36 pages · 555 KB · EN
The AD7938 and AD7939 are 12‑bit and 10‑bit successive‑approximation ADCs with eight analog input channels and a built‑in sequencer. They operate from a single 2.7 V to 5.25 V supply and deliver up to 1.5 MSPS throughput.
The devices feature an on‑chip 2.5 V reference, selectable single‑ended, fully differential or pseudo‑differential inputs, and low power consumption (6 mW at 3 V, 13.5 mW at 5 V). Detailed specifications, timing diagrams, and pin descriptions are provided.
Analog Devices AD7938 specifications
| Throughput rate | 1.5 MSPS max |
|---|---|
| Power consumption (3 V supply) | 6 mW max |
| Power consumption (5 V supply) | 13.5 mW max |
| SINAD (differential mode) | 69 dB min |
| Resolution (AD7938) | 12 bits |
| Resolution (AD7939) | 10 bits |
| Reference voltage | 2.5 V on‑chip |
| Input range (single‑ended, 3 V supply) | ‑0.3 V to +0.7 V |
All Analog Devices AD7938 documents by type
Datasheet 2
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum sampling rate of the AD7938/AD7939?
The devices can sample up to 1.5 MSPS.
How much power does the AD7938 consume at a 3 V supply?
It consumes up to 6 mW in normal operation.
What is the maximum throughput rate of the AD7938/AD7939?
The devices can sample at up to 1.5 MSPS.
How much power does the AD7938/AD7939 use at a 3 V supply?
It consumes up to 6 mW at 1.5 MSPS when powered from 3 V.