AD7273/AD7274 are 10-/12-bit high speed, low power, successive approximation ADCs respectively. The parts operate from a single 2.35 V to 3.6 V power supply and feature throughput rates of up to 3 MSPS. Each part contains a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 55 MHz. The conversion process takes place in continuous clock (continous clock) mode, which eliminates the pipeline delays typical of conventional successive approximation ADCs.
The AD7273 and AD7274 are successive‑approximation ADCs offering up to 3 MSPS throughput in compact 8‑lead TSOT or MSOP packages. They feature low power consumption, flexible clock management, and a wide input bandwidth with no pipeline delays. The devices operate from a supply voltage of 2.35 V to 3.6 V and include an external reference input.
The document lists detailed electrical specifications, timing diagrams, power‑down modes, and pin configurations. It also provides application hints, grounding and layout recommendations, and an ordering guide for both parts.
| Throughput rate | 3 MSPS |
|---|---|
| Power consumption (normal mode) | 11.4 mW typ at 3 V supplies |
| Temperature range | ‑40 °C to +125 °C |
| Resolution (AD7274) | 12 bits |
| Resolution (AD7273) | 10 bits |
| Signal‑to‑Noise Ratio (AD7274) | 69.5 dB min |
The AD7274 can achieve a maximum throughput of 3 MSPS.
In normal operational mode it consumes about 11.4 mW typ at a 3 V supply.
Both devices operate from –40 °C up to +125 °C.