Texas Instruments INA199 Evaluation Module INA199EVM INA199EVM 데이터 시트
제품 코드
INA199EVM
Introduction and Overview
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1
Introduction and Overview
1.1
INA199A1-A3
The INA199A1-A3 devices are voltage output, high-side measurement, bi-directional, zero-drift current
shunt monitors. This family of devices has gains that range from 50V/V to 200V/V. The voltage developed
across the device inputs is amplified by the corresponding gain of the specific device and is presented at
the output pin. These devices can sense voltage drops across shunts at common-mode voltages from
–0.3V to 26V, independent of supply voltages. These devices operate with supply voltages between 2.7V
and 26V and draw a maximum of 100
shunt monitors. This family of devices has gains that range from 50V/V to 200V/V. The voltage developed
across the device inputs is amplified by the corresponding gain of the specific device and is presented at
the output pin. These devices can sense voltage drops across shunts at common-mode voltages from
–0.3V to 26V, independent of supply voltages. These devices operate with supply voltages between 2.7V
and 26V and draw a maximum of 100
m
A. The low offset of the zero-drift architecture enables current
sensing with maximum drops across the shunt as low as 10mV full-scale.
The INA199A1-A3 devices are currently available in an SC70 surface-mount package.
summarizes the available device options.
Table 1. INA199A1-A3 Device Summary
Product
Gain
INA199A1
50
INA199A2
100
INA199A3
200
1.2
INA199A1-A3EVM
The INA199A1-A3EVM is intended to provide basic functional evaluation of this device family. The fixture
layout is not intended to be a model for the target circuit, nor is it laid out for electromagnetic compatibility
(EMC) testing.
layout is not intended to be a model for the target circuit, nor is it laid out for electromagnetic compatibility
(EMC) testing.
The layout of the INA199A1-A3EVM printed circuit board (PCB) is designed to provide the following
features:
features:
•
Easy handling of the small package; a mechanical drawing of the recommended land pattern is found
at the end of the
at the end of the
•
Easy access to all device pins
•
Space for optional input filtering capacitors and resistors as well as a prototype area for additional user
defined circuitry
defined circuitry
•
Space for shunt resistors of various footprints
•
Multiple input signal options
•
Evaluation of all gain options through provided device boards as well as a location to solder a test
device directly onto the board
device directly onto the board
The INA199A1-A3EVM allows the user to install a shunt resistor, and then connect both the
common-mode voltage and load to develop the input voltage, or omit the shunt resistor and apply a
differential voltage directly to the device input. This flexibility allows a user to test the device operation in a
simulated manner as well as an actual application.
common-mode voltage and load to develop the input voltage, or omit the shunt resistor and apply a
differential voltage directly to the device input. This flexibility allows a user to test the device operation in a
simulated manner as well as an actual application.
Refer to the
for comprehensive information about the INA199A1-A3
family of devices.
2
INA199A1-A3EVM
SBOU085 – May 2010
Copyright © 2010, Texas Instruments Incorporated