The AD7910/AD7920 are 250kSPS, 10/12-bit ADCs from Analog Devices that can be used in battery-powered systems, personal digital assistants, medical instruments, mobile communications, instrumentation and control systems, data acquisition systems, high speed modems and optical sensors.
The AD7910 (10‑bit) and AD7920 (12‑bit) are successive‑approximation ADCs designed for high‑speed, low‑power applications. They operate from a single 2.35 V to 5.25 V supply and deliver up to 250 kSPS throughput. Both parts include a low‑noise, wide‑bandwidth track‑and‑hold amplifier that can handle input frequencies above 13 MHz.
The devices are offered in 6‑lead SC70 and 8‑lead MSOP packages and feature flexible serial interfaces (SPI, QSPI, Microwire, DSP‑compatible). Power‑down mode reduces consumption to 1 µA (typical 50 nA). Detailed timing, pin configurations, and layout recommendations are provided for optimal performance.
| Resolution | 10‑bit (AD7910) / 12‑bit (AD7920) |
|---|---|
| Throughput rate | 250 kSPS |
| Supply voltage range | 2.35 V to 5.25 V |
| Typical power consumption (3 V) | 3.6 mW typ |
| Input voltage range | 0 to VDD |
| Operating temperature | -40 °C to +85 °C |
| Package options | 6‑lead SC70, 8‑lead MSOP |
The ADCs can sample at up to 250 kSPS.
They operate from 2.35 V to 5.25 V.
Typical power consumption is 3.6 mW at 250 kSPS with a 3 V supply.
Both a 6‑lead SC70 and an 8‑lead MSOP package are offered.