The ADS1240 and ADS1241 are precision, wide dynamic range, delta-sigma, Analog-to-Digital (A/D) converters with 24-bit resolution operating from 2.7V to 5.25V power supplies. The delta-sigma A/D converter provides up to 24 bits of no missing code performance and effective resolution of 21 bits. The input channels are multiplexed. Internal buffering can be selected to provide very high input impedance for direct connection to transducers or low-level voltage signals. Burnout current sources are provided that allow for detection of an open or shorted sensor. An 8-bit Digital-to-Analog (D/A) converter provides an offset cor- rection with a range of 50% of the Full-Scale Range (FSR). The Programmable Gain Amplifier (PGA) provides selectable gains of 1 to 128, with an effective resolution of 19 bits at a gain of 128. The A/D conversion is accomplished with a 2nd-order delta-sigma modu- lator and programmable Finite-Impulse Response (FIR) filter that provides a simultaneous 50Hz and 60Hz notch.
The document describes the ADS1240 and ADS1241 as precision, wide dynamic range, delta-sigma Analog-to-Digital (A/D) converters with 24-bit resolution operating from 2.7V to 5.25V power supplies. These devices provide up to 24 bits of no missing code performance and an effective resolution of 21 bits.
| Resolution (No Missing Codes) | 24 Bits |
|---|---|
| Integral Nonlinearity | +0.0015 % of FS |
| Programmable Gain Amplifier Range | 1 to 128 |
The device provides an effective resolution of 21 bits.
Yes, the serial interface is SPI compatible.