The ADS1254 is a precision, wide dynamic range, delta-sigma, Analog-to-Digital (A/D) converter with 24-bit resolution. The delta-sigma architecture is used for wide dynamic range and to ensure 24 bits of no missing codes performance. An effective resolution of 19 bits (1.8ppm of rms noise) is achieved for conversion rates up to 20kHz.
The ADS1254 is designed for high-resolution measurement applications in cardiac diagnostics, smart transmitters, industrial process control, weight scales, chromatography, and portable instrumentation. The converter includes a flexible, two-wire synchronous serial interface for low-cost isolation.
The ADS1254 is a multi-channel converter and is offered in an SSOP-20 package.
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| Resolution (Bits) | 24 |
| Sample rate (max) (ksps) | 20 |
| Number of input channels | 4 |
| Interface type | SPI |
| Architecture | Delta-Sigma |
| Input type | Differential |
| Multichannel configuration | Multiplexed |
| Rating | Catalog |
| Reference mode | External |
| Input voltage range (max) (V) | 5.25 |
| Input voltage range (min) (V) | 0 |
| Features | 50/60 Hz Rejection |
| Operating temperature range (°C) | -40 to 85 |
| Power consumption (typ) (mW) | 4.3 |
| Analog supply (min) (V) | 4.75 |
| Analog supply voltage (max) (V) | 5.25 |
| Digital supply (min) (V) | 1.8 |
| Digital supply (max) (V) | 3.6 |
| SSOP (DBQ) | 20 | 51.9 mm² 8.65 x 6 |
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