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.