The AD7738 is a high resolution, high throughput, 24-bit single-ended/differential ADC that offers 18-bit p-p resolution (21-bit effective) and 16-bit p-p resolution (19-bit effective) for 500 Hz, 8.5 kHz and 15 kHz fast channel switching applications. The AD7738 also provides a 3-wire serial interface (SPI™, QSPI™, MICROWIRE™ and DSP compatible), single supply operation (5V analog supply and 3V or 5V digital supply), Schmitt trigger logic inputs and a 28-lead TSSOP package.
The AD7738 is a high precision, high throughput analog front end designed for high resolution multiplexing. It features eight single-ended or four fully differential input channels with unipolar or bipolar ranges of +625 mV, +1.25 V, and +2.5 V. The device supports per channel system calibration and includes a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP protocols.
| Resolution | 24 Bits |
|---|---|
| Conversion Time Rate (Chopping Enabled) | 8.5 kHz |
| Input Channels | 8 Single-Ended or 4 Fully Differential |
| Analog Supply Voltage | 5 V |
| Digital Supply Voltage | 3 V or 5 V |
The device supports +625 mV, +1.25 V, and +2.5 V input ranges.
Yes, it supports a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP.
The part is specified for operation over –40°C to +105°C.