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 code
  • 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): Typical ±1 LSB, Maximum ±2 LSB
  • Dynamic Range: 96 dB
  • True differential analog input Range: ±VREF
  • — 0 V to VREF (VREF at 2.5 V to 5.0 V)
  • — any input range can be used
  • Pseudo differential analog input
  • — Any common mode input
  • — single-ended input
  • No pipeline delay
  • use 1.8 V single Power supply, providing 1.8V/2.5V/3V/5V logic interface SPI
  • in daisy chain Connect multiple ADCs and provide busy indication
  • 10-pin package : MSOP and 3 mm × 3 mm  QFN

Application Scenario

  • Battery powered devices
  • Data Acquisition System
  • Medical equipment
  • Seismic data acquisition system