1FEATURES

2• 18-Bit Noise-Free Resolution

• Complete Front-End for Bridge Sensor

• Onboard Gain of 64

• Onboard Oscillator

• Selectable 10SPS or 80SPS Data Rates

• Simultaneous 50Hz and 60Hz Rejection at

10SPS

• External Voltage Reference up to 5V for

Ratiometric Measurements

• Simple, Pin-Driven Control

• Two-Wire Serial Digital Interface

• Tiny TSSOP-16 Package

• Supply Range: 2.7V to 5.3V

APPLICATIONS

• Weigh Scales

• Strain Gauges

DESCRIPTION

The ADS1130 is a precision, 18-bit analog-to-digital

converter (ADC). With an onboard low-noise gain

amplifier, onboard oscillator, and precision 18-bit

delta-sigma ADC, the ADS1130 provides a complete

front-end solution for bridge sensor applications

including weigh scales and strain gauges.

The low-noise amplifier has a gain of 64, supporting a

full-scale differential input of ±39mV. The delta-sigma

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 ADS1130

can be put into a low-power standby mode or shut off

completely in power-down mode.

All of the features of the ADS1130 are 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 ADS1130 is available in a TSSOP-16 package

and is specified for operation from –40°C to +85°C.