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位分辨率、无失码
  • 吞吐速率:1MSPS
  • 低功耗
  • — 4 mW(1MSPS,仅VDD)

    — 7 mW(1MSPS,总功耗)

    — 70 μW at 10 kSPS

  • 积分非线性(INL):典型值±1 LSB,最大值±2 LSB
  • 动态范围:96 dB
  • 真差分模拟输入范围:±VREF
  • — 0 V至VREF(VREF在2.5 V至5.0 V之间)

    — 可使用任一输入范围

  • 伪差分模拟输入
  • — 任意共模输入

    — 单端输入

  • 无流水线延迟
  • 采用1.8 V单电源供电,提供1.8V/2.5V/3V/5V逻辑接口SPI
  • 以菊花链形式连接多个ADC,并能提供繁忙指示
  • 10引脚封装:MSOP 和3 mm × 3 mm  QFN

Application Scenario

  • Battery Powered Equipment
  • Data Acquisition System
  • Medical equipment
  • Seismic Data Acquisition System