1 Features

• Wide power-supply range:

– 8 V (±4 V) to 85 V (±42.5 V)

• Low offset voltage: ±20 μV

• Low offset voltage drift: ±0.4 μV/°C

• High output current: 250 mA

• Wide gain bandwidth: 10 MHz

• High slew rate: 45 V/μs, rising

• Low noise: 7 nV/√Hz at 10 kHz

• Mux-friendly inputs

• Rail-to-rail output

• Quiescent current:

– Enabled: 3.25 mA

– Disabled: 250 μA

• Specified current limit accuracy

• Overtemperature and overcurrent flags

• Temperature range: –40°C to +125°C

• Package: 12-pin WSON

2 Applications

• Semiconductor test

• Semiconductor manufacturing

• Programmable DC power supply

• LCD test

• CT and PET scanner

3 Description

The OPA593 is a high-voltage (85 V), highprecision,

wide-bandwidth (10 MHz), high-outputcurrent

(250 mA), unity-gain-stable, power op amp.

The OPA593 uses a laser trimming technique to

improve the offset voltage (20 μV, typical) and offset

voltage drift (0.4 μV/°C, typical), and thus avoids the

need for calibration. This device features mux-friendly

inputs that enable differential input voltage range to

the supply rails and help improve settling performance

in multichannel systems.

An external resistor can be used to limit the current

with specified accuracy, and thus provide more

precise measurements. In case of an overcurrent

or overtemperature condition, the device indicates

erroneous operation through a status flag. An

included disable feature is used to shutdown the

device, saving power and placing the output into a

high-impedance state.

The device is unity-gain stable, enabling operation

as a high-impedance buffer. The wide bandwidth and

high slew enable high signal gains. The high output

current and capacitive drive allow the device to drive

external field-effect transistors (FETs) used to provide

higher system currents, such as in a digital power

supply.