The ADS1274 and ADS1278 are 24-bit, delta-sigma analog-to-digital converters (ADCs) with data rates up to 128k samples per second (SPS), allowing simultaneous sampling of four or eight channels.
The ADS1274 (quad) and ADS1278 (octal) are 24‑bit delta‑sigma analog‑to‑digital converters offering simultaneous sampling of four or eight channels. They provide selectable operating modes for high‑speed, high‑resolution, low‑power, and low‑speed operation, with data rates up to 128 kSPS and low drift specifications.
The devices are supplied in a HTQFP‑64 PowerPAD™ package and feature SPI or frame‑sync serial interfaces, low sampling aperture error, and a linear‑phase digital filter. Electrical characteristics, pin assignments, and timing requirements are detailed for design integration, and a land‑pattern guide is included for PCB layout.
| Resolution | 24 bits |
|---|---|
| Maximum Data Rate | 128 kSPS |
| Analog Supply Voltage (AVDD) | 4.75 V – 5.25 V |
| Power Consumption (High‑Speed mode) | 50 – 75 mA |
The devices support up to 128 kSPS data rate in high‑speed mode.
AVDD must be between 4.75 V and 5.25 V, while DVDD is 1.65 V – 1.95 V.