SDAA511 September   2026 OPA192 , PGA855

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Detailed Description
    1. 2.1 ATE Testing Card and Signal Sensing
    2. 2.2 Signal Sensing Requirements
    3. 2.3 Signal Sensing
    4. 2.4 General Purpose Sensing
    5. 2.5 Precision Signal Sensing
      1. 2.5.1 Middle and High Voltage Signal
      2. 2.5.2 Current Signal with Middle and High Common Mode Voltage
      3. 2.5.3 Signal Which Requires Very Low Current Leakage
      4. 2.5.4 Fast Voltage Signal
      5. 2.5.5 Ultra-High Voltage Signal
  6. 3Summary
  7. 4References

2.3 Signal Sensing

In most measuring cases, the typical circuit topology is as shown in Figure 2-1. The buffer converts the signal voltage to the ADC input range. In some cases, an ADC with an integrated AFE buffer can directly sense the signal voltage or current, such as the ADS9308V8I, which has eight voltage channels and eight current channels of ADC.

Signal Sensing Typical Topology Figure 2-1 Signal Sensing Typical Topology