ADS1241

ADS1240 ADS1241 ADS1240 ADS1241 SBAS173F – JUNE 2001 – REVISED OCTOBER 2013 24-Bit ANALOG-TO-DIGITAL CONVERTER FEATURES DESCRIPTION q 24 BITS NO MISSING CODES The ADS1240 and ADS1241 are precision, wide dynamic range, q SIMULTANEOUS 50Hz AND 60Hz REJECTION (–90dB MINIMUM) q 0.0015% INL q 21 BITS EFFECTIVE RESOLUTION (PGA = 1), 19 BITS (PGA = 128) q PGA GAINS FROM 1 TO 128 q SINGLE CYCLE SETTLING q PROGRAMMABLE DATA OUTPUT RATES q EXTERNAL DIFFERENTIAL REFERENCE OF 0.1V TO 5V 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 correction with a range of 50% of the Full-Scale Range (FSR). The Programmable Gain Amplifier (PGA) provides selectable gains of q ON-CHIP CALIBRATION q SPI™ COMPATIBLE q 2.7V TO 5.25V SUPPLY RANGE q 600µW POWER CONSUMPTION 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 modulator and programmable Finite-Impulse Response (FIR) filter that provides a simultan...