8 Application and Implementation

Note

Information in the following applications sections is not part of the TI component specification,

and TI does not warrant its accuracy or completeness. TI’s customers are responsible for

determining suitability of components for their purposes, as well as validating and testing their design

implementation to confirm system functionality.

8.1 Application Information

The OPA593 is a high-voltage, high output current op amp. The device is capable of operating with supplies

as low as ±5 V (10 V) and as high as ±42.5 V (85 V), with an output current up to 250 mA and an internal

current limit with an accuracy of up to ±5%. Thanks to the small size, high operating voltage range, output

current, and high dc precision, the device is designed for operating as a high gain stage, driving heavy loads

and conditional large signals. The additional features of the OPA593, including the current limit, overcurrent, and

overtemperature flags, thermal protection, output disable and mux-friendly inputs, help the device protect both

the op amp and the system from potential damage due to various fault conditions.

8.2 Typical Application

+

–

10 k

+

–

45 V

–5 V

1.47 k

GND

GND

Input

Output

Figure 8-1. Output Driver Configured With a Gain of 8

8.2.1 Design Requirements

The OPA593 is designed for use as an output driver stage with gain thanks to the wide supply voltage and high

output current with programmable current limit. These features combined with the small size of the DNT package

(4 mm x 4 mm) makes this device a great choice for high-channel density systems such as semiconductor test

and manufacturing platforms where many channels may be present. In this design, the OPA593 is configured for

a gain of 8. A small negative supply is provided so that if the application requires a small output voltage, such as

in the case of a device under test (DUT) continuity check, the amplifier is able to provide the output without being

limited by the negative rail (that is, saturating the output).

Table 8-1. Design Parameters

PARAMETER

VALUE

Supply voltage

+45 V, –5 V

Input voltage

0 V to 5 V

Output voltage

0 V to 40 V

System gain

8

Output current

Up to 250 mA

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OPA593

SBOS659A – JANUARY 2022 – REVISED MARCH 2022

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