ISL26132

• Product Introduction

Key features:

Up to 21.6 noise levels. With 1x/2x/64x/128x low-noise output amplifiers RMS Noise: 10.2nV @ 10SPS (PGA = 128x) Linearity error: 0.0002% FS Simultaneous suppression of 50Hz and 60Hz (@10SPS) Two-channel (ISL26132) or four-channel (ISL26134) differential input multiplexer On-chip temperature sensor (ISL26132) Automatic clock source detection Simple interfaces to read the transformation +5 V analog, +5 to +2.7 V digital power supply Lead-free (RoHS compliant) TSSOP package, ISL26132, 24-pin; ISL26134, 28 needles

Complete analog front-end for high-resolution measurement applications in ISL26132 and ISL26134. These 24-bit Delta-Sigma analog-to-digital converters include a very low-noise amplifier and input for two or four differential multiplexers. The device offers the same pins and ADS1232 and ADS1234 devices compatible with these device functions. ISL26132 and ISL26134 offer improved noise performance at 10SPS and 80SPS conversion rates, while on-chip low-noise programmable gain amplifiers provide gains of 1x/2x/64x/128x. The 128x gain setting provides an input range ± 9.766mVFS with a 2.5V reference. High input impedance allows direct connection to sensors such as the weighing sensor bridge to ensure specified measurement accuracy without the need for additional circuitry. When receiving external power supplies, signal input is set to 100mV rail with ununit gain. The Delta-Sigma ADC features a three-stage modulator that delivers up to 21.6-bit noiseless performance, and the device can be operated from an external clock source, a crystal (typically 4.9152MHz), and an on-chip oscillator. The two-channel ISL26132 is in a 24 LD TSSOP package, and the four-channel ISL26134 is in a 28 LD TSSOP package. Both are specified to operate within the automotive-grade temperature range (from -40°C to +105°C).