LHA7914 is a low-power analog-to-digital converter (ADC) that is compatible with 12C/SPI interfaces and supports 24/16/12 bit precision requirements. It is packaged in DFN-10 and MSOP-10. This series integrates a low drift voltage reference and oscillator. It also includes programmable gain amplifiers (PGA) and digital comparators. These characteristics, combined with a wide range of operating power supply voltages, make the LHA7914 series highly suitable for sensor measurement applications with limited power consumption and space.



LHA7914 can perform conversion at data rates up to 3000 samples per second (SPS). PGA can provide an input range from soil 64mV to soil 6.144V, enabling accurate measurement of large and small signals. LHA7914 has an input multiplexer (MUX) that can achieve two pairs of differential input measurements or four single ended input measurements. In LHA7914, a digital comparator can be used for undervoltage and overvoltage detection.



Product characteristics



Wide power supply voltage: 2.2V to 5.5V



Low power consumption: 150uA (continuous conversion mode)



Programmable data transfer rate: 6.25SPS to 3kSPS



Single cycle stability



Input high impedance: 1G Ω



Internal low drift voltage reference



internal oscillator



I2C or SPI interface



Four single ended inputs or two differential inputs



Programmable comparator



Working temperature range: -40 ℃ to+125 ℃



Packaging: MSOP10 (3mm * 3mm); DFN10(3mm*3mm)



ADS1115, which is compatible with TI, is suitable for domestic substitution needs.