LHA7908
The LHA7908 is an SPI-compatible, 12-bit high-precision low-power analog-to-digital converter (ADC), available in compact DFN-10 and MSOP-10 packages. The LHA7908 integrates a low-drift voltage reference, an internal oscillator and a programmable gain amplifier (PGA). Combined with the wide operating supply range, these features make the LHA7908 well suited for sensor measurement applications with limited power budget and PCB space.
The LHA7908 performs conversions at data rates up to 3994 samples per second (SPS). The PGA provides input ranges from ±64 mV to ±6.144 V, enabling accurate measurement of both small and large amplitude signals. Equipped with an input multiplexer (MUX), the LHA7908 supports measurement of two differential input pairs or four single-ended inputs.
The LHA7908 can operate in either continuous conversion mode or single-shot mode. In single-shot mode, the device automatically powers down after one conversion, substantially reducing power consumption during idle periods.
Product Features
- Wide supply voltage: 2.7 V to 5.5 V
- Low power consumption: 150 μA in continuous conversion mode
- Programmable output data rate: 25 SPS to 4 kSPS
- Single-cycle settling
- Internal low-drift voltage reference
- Internal oscillator
- Input configuration: 4 single-ended inputs or 2 differential inputs
- Integrated programmable gain amplifier (PGA)
- Operating temperature range: −40 ℃ to +125 ℃
Application Scenario
- Temperature measurement
- Thermocouple measurement
- Cold-junction compensation
- Thermistor measurement
- Portable instrumentation
- Factory automation and process control
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