ADS1112IDGSR Data Converter IC ADC 16-bit 240SPS 2 Ch Diff
dac integrated circuit
,da converter chip
ADS1112IDGSR Data Converter IC ADC 16-bit 240SPS 2 Ch Diff
FEATURES
D COMPLETE DATA ACQUISITION SYSTEM IN THE MSOP-10 AND LEADLESS QFN-STYLE PACKAGES
D MEASUREMENTS FROM TWO DIFFERENTIAL CHANNELS OR THREE SINGLE-ENDED CHANNELS
D I2CINTERFACE—EIGHT ADDRESSES PIN- SELECTABLE
D ONBOARD REFERENCE: Accuracy: 2.048V ±0.05% Drift: 5ppm/°C
D ONBOARD PGA
D ONBOARD OSCILLATOR
D 16 BITS, NO MISSING CODES
D INL: 0.01% of FSR max
D CONTINUOUS SELF-CALIBRATION
D SINGLE-CYCLE CONVERSION
D PROGRAMMABLE DATA RATE: 15SPS to 240SPS
D POWER SUPPLY: 2.7V to 5.5V
D LOW CURRENT CONSUMPTION: 240μA
APPLICATIONS
D PORTABLE INSTRUMENTATION
D INDUSTRIAL PROCESS CONTROL
D SMART TRANSMITTERS
D CONSUMER GOODS
D FACTORY AUTOMATION
D TEMPERATURE MEASUREMENT
DESCRIPTION
The ADS1112 is a precision, continuously self-calibrating Analog-to-Digital (A/D) converter with two differential or three single-ended channels and up to 16 bits of resolution in the small MSOP-10 and leadless QFN-style (small-outline, no-lead) packages. The onboard 2.048V reference provides an input range of ±2.048V differentially. The ADS1112 uses an I2C-compatible serial interface and has two address pins that allow a user to select one of the eight I2C Slave addresses. The ADS1112 operates from a single power supply ranging from 2.7V to 5.5V.
The ADS1112 can perform conversions at rates of 15, 30, 60, or 240 samples per second (SPS). The onboard programmable gain amplifier (PGA), which offers gains of up to eight, allows smaller signals to be measured with high resolution. In single-conversion mode, the ADS1112 automatically powers down after a conversion, greatly reducing current consumption during idle periods.
The ADS1112 is designed for applications requiring high-resolution measurement, where space and power consumption are major considerations. Typical applications include portable instrumentation, industrial process control, and smart transmitters.
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