8.2.2 Detailed Design Procedure

In this design example, the OPA593 is configured as both a gain and output driver stage. The input signal to

the amplifier is 0 V to 5 V and the device is configured with a positive gain of 8. This configuration results in

an output voltage of 0 V to 40 V. The supply voltages are selected to provide adequate headroom so that the

amplifier can sink or source up to 250 mA without slamming the output into the rail, while minimizing the swing

from the supply to the output to minimize the thermal dissipation of the device.

This simple design example is common in many systems using a DAC to provide the input signal and require

a wide output signal with high output current. Such systems include test & measurement platforms and power

supplies.

Figure 8-2 shows the input and output signal of this OPA593 circuit.

8.2.3 Application Curve

Time (s)

0

0.004

0.008

0.012

0.016

0.02

0

5

10

15

20

25

30

35

40

Input

Output

Figure 8-2. OPA593 Output Driver Circuit, Input and Output Signals

OPA593

SBOS659A – JANUARY 2022 – REVISED MARCH 2022

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