The AD7739 is a high precision, high throughput analog front end. True 16-bit p-p resolution is achievable with a total conversion time of 250 μs (4 kHz channel switching), making it ideally suited to high resolution multiplexing applications. The part can be configured via a simple digital interface, which allows users to balance the noise performance against data throughput up to 15 kHz. The analog front end features eight single-ended or four fully differential input channels with unipolar or bipolar 625 mV, 1.25 V, and 2.5 V input ranges. It accepts a common-mode input voltage from 200 mV above AGND to AVDD – 300 mV. The differential reference input features “No-Reference” detect capability. The ADC also supports per channel system calibration options.
The AD7739 is a high‑precision, high‑throughput analog‑to‑digital converter featuring 8 single‑ended or 4 fully‑differential input channels. It offers selectable unipolar or bipolar input ranges of ±0.625 V, ±1.25 V, and ±2.5 V, and operates over an extended industrial temperature range.
The device includes on‑chip per‑channel system calibration, a 24‑bit resolution (18‑bit effective at 500 Hz, 16‑bit effective at 4 kHz), and supports SPI, QSPI, Microwire, and DSP‑compatible serial interfaces. It is supplied in a 24‑lead TSSOP package.
| Resolution | 24 bits |
|---|---|
| Conversion Time Rate (Chopping Enabled) | 11840 Hz |
| Operating Temperature Range | -40 °C to +105 °C |
| Package | 24‑lead TSSOP |
| Digital Interface Compatibility | SPI, QSPI, Microwire, DSP compatible |
The device is specified for operation from -40 °C to +105 °C.
The AD7739 can be interfaced via SPI, QSPI, Microwire, and DSP‑compatible serial interfaces.
When chopping is enabled, the ADC provides a 24‑bit resolution with no missing codes.