The document introduces a low-power, 8/16-channel, 31.25 kSPS, 24-bit high-integration Σ-Δ ADC called AD7173-8. The product features low power consumption, high integration, precision analog input buffers and reference input buffers, precision reference voltage source, crosspoint multiplexer, fast and flexible output rate, etc. It is suitable for applications such as process control, voltage, current, temperature and pressure measurement, flow meters, medical and scientific multi-channel instruments, etc.
The document describes the AD7173-8, a high-integration Sigma-Delta analog-to-digital converter (ADC) featuring 8/16 multiplexed channels. Key characteristics include low power consumption, an internal precision 2.5V reference source, and support for various digital communication interfaces such as SPI, QSPI, and MICROWIRE.
The datasheet provides comprehensive technical specifications including output data rates up to 31.25 kSPS, noise performance, linearity (INL), and power supply requirements. It also covers circuit descriptions, timing characteristics, register configurations for digital control, application examples for process control and medical instruments, and mechanical package information. This manual is written in Chinese.
| Resolution (1.25 SPS) | 24 bit |
|---|---|
| Power Supply Voltage (AVDD1) | 3.0 to 5.5 V |
| Operating Temperature Range | -40°C to +105°C |
The device supports SPI, QSPI, MICROWIRE, and DSP-compatible interfaces.
The maximum output data rate is 31.25 kSPS.
The device operates from -40°C to +105°C.
The internal reference output voltage is 2.5 V relative to AVSS.