The ADS1234IPW is a 24-bit Analogue-to-digital Converter with an onboard, low-noise programmable gain amplifier (PGA), precision delta-sigma ADC and internal oscillator, this ultra ADS1234 provides a complete front-end solution for bridge sensor applications including weigh scales, strain gauges and pressure sensors. The input multiplexer accepts four differential inputs. The ADC also includes an onboard temperature sensor to monitor ambient temperature. The delta-sigma ADC has 23.5-bit effective resolution and is comprised of a 3rd-order modulator and 4th-order digital filter. Supports 80SPS of data rate and can be clocked externally using an oscillator or a crystal. There is also an internal oscillator available that requires no external components. Offset calibration is performed on-demand and the ADC can be put in a low-power standby mode or shut off completely in power-down mode. All of the features of this ADC are operated through simple pin-driven control.
The ADS1241E is a precision Analog-to-digital Converter (ADC) with 24-bit resolution operating from 2.7 to 5.25V supplies. This wide dynamic range, delta-sigma A/D converter provides up to 24-bit of no missing code performance and effective resolution of 21-bit. 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 the detection of an open or shorted sensor. An 8-bit digital-to-analog converter (DAC) provides an offset correction with a range of 50% of the FSR. The Programmable Gain Amplifier (PGA) provides selectable gains of 1 to 128 with an effective resolution of 19-bit at a gain of 128. The A/D conversion is accomplished with a second-order delta-sigma modulator and programmable FIR filter that provides a simultaneous 50Hz and 60Hz notch. The reference input is differential and can be used for ratiometric conversion.
The ADS1211P is a precision wide dynamic range delta-sigma Analog-to-digital Converter (ADC) with 24-bit resolution operating from a single 5V supply. The differential inputs are ideal for direct connection to transducers or low level voltage signals. The delta-sigma architecture is used for wide dynamic range and to guarantee 22-bit of no missing code performance. An effective resolution of 23-bit is achieved through the use of a very low-noise input amplifier at conversion rates up to 10Hz. Effective resolutions of 20-bit can be maintained up to a sample rate of 1kHz through the use of the unique Turbo modulator mode of operation. The dynamic range of the converters is further increased by providing a low-noise programmable gain amplifier with a gain range of 1 to 16 in binary steps.