LHA8961DEDB
The LHA8961 is a 16-bit, successive approximation, analog-to-digital converter (ADC) that operates from a single supply (VDD). It includes a low-power, high-speed, 16-bit sampling ADC and a multi-function serial interface port. On the rising edge of CNV, the LHA8961 samples the voltage difference between the IN+ and IN- pins, which typically swing between 0 V and VREF in opposite phase. The reference voltage (REF) is provided externally and can be independent of the supply voltage (VDD). Its power consumption and throughput scale linearly. The SPI-compatible serial interface also enables daisy-chaining of several ADCs onto a 3-wire bus using the SDI input and provides an optional busy indicator. With an independent supply for VIO, the device is compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic. The LHA8961 is available in a 10-pin MSOP package or a 10-pin QFN package. The operating temperature range is −40°C to +85°C.
Product Features
- 16-bit resolution, no missing codes
- Throughput rate: 1MSPS
- Low power consumption
- — 4 mW (1MSPS, VDD only)
- — 7 mW (1MSPS, total power consumption)
- — 70 μW at 10 kSPS
- Integral nonlinearity (INL): ±1 LSB typical, ±2 LSB maximum
- Dynamic range: 96 dB
- True differential analog input range: ±VREF
- — 0 V to VREF (VREF is between 2.5 V and 5.0 V)
- — Any input range can be used
- Pseudo differential analog input
- — Any common mode input
- — single-ended input
- No pipeline delay
- Adopt 1.8 V single power supply, provide 1.8V/2.5V/3V/5V logic interface SPI
- Daisy-chain multiple ADCs with busy indication
- 10-pin packages: MSOP and 3 mm × 3 mm QFN
Application Scenario
- Battery powered equipment
- Data acquisition system
- Medical Instruments
- Seismic Data Acquisition System
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