SBOU258 March   2021 INA4290

 

  1.   Trademarks
  2. 1General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  3. 2Overview
    1. 2.1 EVM Kit Contents
    2. 2.2 Related Documentation From Texas Instruments
  4. 3Hardware
    1. 3.1 Features
  5. 4Operation
    1. 4.1 Quick Start Setup
    2. 4.2 Measurements
  6. 5EVM Components
    1. 5.1 R2_n, R3_n, R4_n, R6_n, R7_n, R8_n, R10_n, R11_n, R14_n, R15_n, C2_n - C9_n
    2. 5.2 C1_An
    3. 5.3 R1_n, R5_n, R9_n, R13_n(Rshunt)
    4. 5.4 U1_n (INA4290)
  7. 6Schematic, PCB Layout, and Bill of Materials
    1. 6.1 Schematics
    2. 6.2 PCB Layout
    3. 6.3 Bill of Materials

2 Overview

The INA4290 device is a voltage-output, high-side quad-channel current sense amplifier in a QFN (16) package. As shown in INA4290 Gain Option Summary, the INA4290 has gains that range from 20 V/V to 500 V/V, depending on the gain option that is selected. The voltage developed across the device inputs is amplified by the corresponding gain of the specific device, and is presented at the output pin. The device can accurately sense voltage drops across shunts at 2.7-V to +120-V common-mode voltages, dependent of supply voltages. The device survives common-mode voltages from –20 V to +122 V. The device operates with supply voltages between 2.7 V and 20 V, and draws a typical of 320 µA per channel at room temperature.

Table 2-1 INA4290 Gain Option Summary
ProductGain (V/V)
INA4290A120
INA4290A250
INA4290A3100
INA4290A4200
INA4290A5500