ADS1131IDR

18位模拟数字转换器用于桥式传感器 18-Bit Analog-to-Digital Converter for Bridge Sensors

The ADS1131 is a precision, 18-bit analog-to-digital converter ADC. With an onboard, low-noise amplifier, onboard oscillator, precision 18-bit delta-sigma ΔΣ ADC, and bridge power switch, the ADS1131 provides a complete front-end solution for bridge sensor applications including weigh scales, strain gauges, and load cells.

The low-noise amplifier has a gain of 64, supporting a full-scale differential input of ±39mV. The ΔΣ ADC has 18-bit effective resolution and is comprised of a third-order modulator and fourth-order digital filter. Two data rates are supported: 10SPS with both 50Hz and 60Hz rejection and 80SPS. The ADS1131 can be put into a low-power standby mode or shut off completely in power-down mode.

The ADS1131 is controlled by dedicated pins; there are no digital registers to program. Data are output over an easily-isolated serial interface that connects directly to the MSP430 and other microcontrollers.

The ADS1131 is available in an SO-16 package and is specified from –40°C to +85°C.