This datasheet details the AD7402, a 16-bit isolated sigma-delta modulator with a 10 MHz internal clock, 87 dB SNR, and on-chip digital isolation for…
The AD7402 is a high-performance, second-order sigma-delta modulator that converts an analog input signal into a high-speed, single-bit data stream. It features on-chip digital isolation based on iCoupler technology, providing superior performance compared to optocoupler devices. The device operates from a 4.5 V to 5.5 V power supply and accepts a differential input signal of ±250 mV (±320 mV full scale), making it ideal for shunt voltage monitoring in high-voltage applications requiring galvanic isolation.
| Resolution | 16 Bits |
|---|---|
| Signal-to-Noise Ratio (SNR) | 87 dB typical |
| Effective Number of Bits (ENOB) | 13.5 bits typical |
| Internal Clock Rate | 10 MHz |
| Operating Temperature Range | -40°C to +105°C |
| Input Voltage Range | ±320 mV |
| Isolation Transient Immunity | >25 kV/µs |
| Package Type | 8-lead, wide-body SOIC |
The typical signal-to-noise ratio is 87 dB.
The device operates from -40°C to +105°C.
The full-scale analog input range is ±320 mV.
Yes, it features an on-board digital isolator.