AD7714ANZ-5

The AD7714ANZ-5 is a complete analog front end for low-frequency measurement applications. It employs a sigma-delta conversion technique to achieve 24 bits of no missing codes performance with 0.0015% typical nonlinearity. The device accepts low-level signals directly from a transducer and outputs a serial digital word via a three-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP.

The part features a programmable gain front end with gains from 1 to 128, allowing direct connection to a wide range of sensor outputs. It can be configured as three fully differential inputs or five pseudo-differential inputs. The ADC operates from a single 5V supply (3V to 5.25V range) and draws only 350 µA typical supply current, with a power-down mode reducing current to 5 µA.

The AD7714ANZ-5 is housed in a 24-pin DIP package (24-DIP, 0.300" width) for through-hole mounting. It operates over the industrial temperature range of -40°C to +85°C. The device includes an on-chip digital filter with programmable cutoff, and supports read/write of calibration coefficients. Typical applications include portable industrial instruments, weigh scales, loop-powered systems, and pressure transducers.