LHA8961D
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
— LHA8961D: 1 MSPS
— LHA8961C: 500 kSPS
- Low Power Consumption
— 3.6 mW @ 1 MSPS (VDD only)
— 7 mW total power @ 1 MSPS
— 70 μW @ 10 kSPS
- INL: ±0.5 LSB typical, ±1.5 LSB maximum
- Dynamic Range: 96 dB
- True Differential Analog Input Range: ±VREF
— 0 V to VREF (VREF ranges from 2.5 V to 5.0 V)
— Any input range is available for selection
- Pseudo-Differential Analog Input
— Arbitrary common-mode input
— Single-ended input
- No pipeline latency
- Single 1.8 V supply operation, SPI logic interface compatible with 1.8 V / 2.5 V / 3 V / 5 V logic levels
- Daisy-chainable multiple ADCs with busy status indicator
- 10-lead packages: MSOP and 3 mm × 3 mm QFN
Application Scenario
- Battery Powered Equipment
- Data Acquisition System
- Medical equipment
- Seismic Data Acquisition System
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