The ADS1251 is a 24-bit, 20kHz, low-power analog-to-digital converter with features including 24-bit no missing codes, 19-bit effective resolution, low noise, differential inputs, etc. It is designed for high-resolution measurement applications in cardiac diagnostics, smart transmitters, industrial process control, weigh scales, chromatography, and portable instrumentation.
The ADS1251 is a precision, wide dynamic range, delta-sigma Analog-to-Digital (A/D) converter with 24-bit resolution operating from a single +5V supply. It features no missing codes and an effective resolution of 19 bits (1.5ppm of rms noise) at conversion rates up to 20kHz. The device is designed for high-resolution measurement applications such as cardiac diagnostics, smart transmitters, industrial process control, weigh scales, chromatography, and portable instrumentation.
| Resolution | 24 Bits |
|---|---|
| Effective Resolution | 19 Bits |
| Data Rate | 20kHz |
| Low Noise | 1.5ppm |
| Input Type | Differential |
| Integral Nonlinearity | 15ppm (max) |
| Reference Voltage Range | 0.5V to 5V |
| Power-Down Mode | Yes |
| Operating Power | 8mW at 20kHz |
| Operating Temperature | -40 °C to 85°C |
The effective resolution is 19 bits, achieving 1.5ppm of rms noise.
The maximum data rate is 20kHz.
Yes, the device features a power-down mode to reduce power consumption.
The device operates from a single +5V supply with a range of +4.75V to +5.25V.