The LHA7918 device is a 16 bit high-precision and low-power analog-to-digital converter (ADC) compatible with SPI, using small DFN-10 and MSOP-10 packages. The LHA7918 device integrates a low drift voltage reference and oscillator. LHA7918 also includes a programmable gain amplifier (PGA). These characteristics, combined with a wide range of operating power supply voltages, make LHA7918 highly suitable for sensor measurement applications with limited power consumption and space. LHA7918 can perform conversions at data rates up to 1000 samples per second (SPS). PGA can provide an input range from ± 64mV to ± 6.144V, enabling accurate measurement of both large and small signals. LHA7918 has an input multiplexer (MUX) that can achieve two pairs of differential input measurements or four single ended input measurements. LHA7918 can operate in both continuous conversion mode and single mode. In single mode, these devices can automatically power down after one conversion; Therefore, it significantly reduces power consumption during idle periods.



Product characteristics



Wide power supply voltage: 2.2V to 5.5V



Low power consumption: 150 μ A (continuous conversion mode)



Programmable data transfer rate: 6.25SPS to 1K SPS



Single cycle stability



Internal low drift voltage reference



internal oscillator



Four single ended inputs or two differential inputs



Internal Programmable Gain Amplifier (PGA)



Working temperature range: -40 ° C to+125 ° C



Application scenarios



Temperature measurement:



Thermocouple measurement



Cold junction compensation



Thermistor measurement



Portable instrument



Factory automation and process control



Compatible with TI's ADS1118 and suitable for domestic substitution needs