ZHCSFN3E August 2006 – January 2021 INA193A-Q1 , INA194A-Q1 , INA195A-Q1 , INA196A-Q1 , INA197A-Q1 , INA198A-Q1
PRODUCTION DATA
- 1 特性
- 2 应用
- 3 说明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Detailed Description
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
7.4.2.1 Normal Case 1: VSENSE ≥ 20 mV, VCM ≥ VS
This region of operation provides the highest accuracy. Here, the input offset voltage is characterized and measured using a two-step method. First, the gain is determined by (Equation 2).
where
- VOUT1 = Output voltage with VSENSE = 100 mV
- VOUT2 = Output voltage with VSENSE = 20 mV
The offset voltage is then measured at VSENSE = 100 mV and referred to the input (RTI) of the current shunt monitor, as shown in (Equation 3).
In Section 6.6, the Output Error vs Common Mode Voltage curve shows the highest accuracy for the this region of operation. In this plot, VS = 12 V; for VCM ≥ 12 V, the output error is at its minimum. This case is also used to create the VSENSE ≥ 20 mV output specifications in the Electrical Characteristics table.