Overview
3
SBOU175 – October 2019
Copyright © 2019, Texas Instruments Incorporated
OPA462EVM
1
Overview
1.1
OPA462
The
is a precision power amplifier capable of operating over a very wide supply range of ±6 V to
±90 V, with an input common-mode range that extends to within a few volts from each rail. This amplifier
is composed of an internal differential input amplifier stage, followed by a voltage amplifier, and finally, a
high-current output stage. This device is designed to avoid phase inversion problems that are typically
found in similar op amps. The OPA462 is unity-gain stable, and comes in an SO PowerPAD™ package.
1.2
OPA462EVM
The OPA462EVM is intended to provide basic functional evaluation of the OPA462. The EVM provides the
following features:
•
Easy access to pertinent nodes with test points and terminal blocks
•
Convenient input and output filtering
•
Access to multiple nodes and footprints for compensation
•
Protection against power supply sequencing and inductive load kickback
•
Configurable for any common amplifier topology, including the improved Howland current pump
•
Footprints for providing a flexible reference voltage
1.3
Related Documentation
The following documents listed in
provide information about TI's integrated circuits and support
tools for the OPA462EVM.
Table 1. Related Documentation
Document
Literature Number
Product Data Sheet
Product Data Sheet
1.4
Evaluation Module Limitations and Cautions
As a result of the high common-mode input voltage rating of the OPA462, evaluation of the device often
involves high-voltage operation. As a difference amplifier, it may also be used in current-sensing
applications. In addition to voltage and current limitations, proper electrostatic discharge precautions are
recommended.
1.4.1
High Voltage Warning
The OPA462 is rated for supply voltages up to ±90 V (180 V for single supply), and common-mode input
voltages up to ±85 V. When using the device and EVM under such circumstances, all proper safety
practices must be followed. Do not apply more than rated voltages. See the
for
additional information.
1.4.2
Electrostatic Discharge Caution
Many of the components on the OPA462EVM are susceptible to damage by electrostatic discharge (ESD).
Customers are advised to observe proper ESD handling precautions when unpacking and handling the
EVM, including the use of a grounded wrist strap at an approved ESD workstation.
CAUTION
A wrist strap may only be used with circuit voltages less than 100 V. For circuit
voltages equal to or greater than 100 V, use an ionizer.
