The AD7714 is a 24-bit no missing codes ADC with five-channel programmable gain front end, low noise and low current.
The AD7714 is a complete analog front‑end for low‑frequency measurement applications. It accepts low‑level signals directly from a transducer and outputs a serial digital word using sigma‑delta conversion to achieve up to 24‑bit resolution with no missing codes. The device features three differential analog inputs (configurable as five pseudo‑differential inputs), a programmable‑gain front‑end, and a three‑wire serial interface (SPI, QSPI, Microwire) that can be set up in software.
The datasheet provides detailed static performance specifications, power‑supply requirements, and package options. Typical supply voltages are 3 V (AD7714‑3) or 5 V (AD7714‑5), with low standby current (10 pA–40 pA) and low noise (<150 nV rms). The part is offered in 24‑lead TSSOP, SOIC, SSOP, and DIP packages and is suited for loop‑powered systems, portable scales, pressure transducers, and other microcontroller‑ or DSP‑based applications.
| Resolution | 24 bits (no missing codes) |
|---|---|
| Input channels | 3 differential (configurable as 5 pseudo‑differential) |
| Supply voltage | 3 V (AD7714‑3) or 5 V (AD7714‑5) |
| Noise | < 150 nV rms |
| Operating temperature range | -40 °C to +105 °C |
The AD7714 provides 24‑bit resolution with no missing codes.
It operates from a single supply of either 3 V (AD7714‑3) or 5 V (AD7714‑5).
The device has three differential inputs that can be configured as five pseudo‑differential inputs.