The AD7457 is a low power pseudodifferential 12-bit ADC with an 8-lead SOT-23 package. It operates in a voltage range of 2.7V to 5.25V and features low power consumption, wide input bandwidth, flexible power/serial clock speed management, etc. The ADC is suitable for applications such as transducer interface, battery-powered systems, data acquisition systems, and portable instrumentation.
The AD7457 is a 12‑bit successive‑approximation ADC that operates from a single 2.7 V to 5.25 V supply. It offers pseudo‑differential inputs, a high‑speed SPI/QSPI/MICROWIRE serial interface, and no pipeline delays, making it suitable for battery‑powered and portable instrumentation.
Key features include low power consumption (0.9 mW at 3 V, 100 kSPS), flexible clock management, automatic power‑down, and a typical ENOB greater than 10 bits with a 500 mV reference. The device is supplied in an 8‑lead SOT‑23 package.
| Resolution | 12 Bits |
|---|---|
| Supply Voltage (Vop) | 2.7 V to 5.25 V |
| Maximum Power Consumption (3 V, 100 kSPS) | 0.9 mW |
| Signal‑to‑Noise Ratio (SNR) | 71 dB min |
The device consumes up to 0.9 mW at 3 V supply when operating at 100 kSPS.