The LHA7928 series products are low-power analog-to-digital converters (ADCs) that are compatible with 12C/SPI interfaces and support different precision requirements of 24/16/12 bits. They are packaged in DFN-10 and MSOP-10 packages. 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 LHA7928 series highly suitable for sensor measurement applications with limited power consumption and space.
LHA7928 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. LHA7928 has an input multiplexer (MUX) that can achieve two pairs of differential input measurements or four single ended input measurements. In LHA7928, a digital comparator can be used for undervoltage and overvoltage detection.
Characteristics of LHA7928 Domestic Chip Products
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 4K 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
Packaging: MSOP10 (3mm * 3mm); DFN10(3mm*3mm)
ADS1118, which is compatible with TI, is suitable for domestic substitution needs.
Application scenarios of LHA7928 chip
Temperature measurement:
Thermocouple measurement
Cold junction compensation
Thermistor measurement
Portable instrument
Factory automation and process control
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