1 Features
• Unity-gain bandwidth: 250MHz
• Wide bandwidth: 100MHz GBW
• High precision:
– Input offset voltage at 25℃ : ±300μV
(maximum)
– Input offset voltage (-40℃ to 125℃) : ±1mV
(maximum)
– Offset drift: 1.2μV/°C (typical)
• High slew rate: 190V/μs
• Low noise: 5.5nV/√Hz
• Rail-to-rail I/O
• High output current: > 100mA
• Low input bias current: 3pA
• Quiescent current: 5.1mA
• Thermal shutdown
• Supply range: 2.5V to 5.5V

2 Applications
• Voltage sensing
• Current sensing
• Active filter
• Photodiode transimpedance amplifier
• Ultrasound
• Optical networking, tunable laser
• High-speed integrator
• Analog-to-digital converter (ADC) input buffer
• Digital-to-analog converter (DAC) output amplifier
• Communications

3 Description
The single OPA620 is a high-speed, voltage-feedback
operational amplifier designed for current sensing
and precision applications. Offering unity-gain stability
and high output current drive, the OPA620 delivers
enhanced signal-chain precision across temperature,
exceeding the performance of conventional widebandwidth
CMOS amplifiers. Operating with a low
quiescent current of 5.1mA per channel, the OPA620
is suitable for power-sensitive applications.
The OPA620 operates from a single or dual supply
voltage ranging from 2.5V (±1.25V) to 5.5V (±2.75V).
It features a wide common-mode input range
extending beyond the supply rails, and delivers a railto-
rail output swing within 30mV of the positive and
negative supplies, enabling a wide dynamic range.
The OPA620 is available in a small 5-pin SOT-23
package and is specified for operation over an
extended temperature range of –40°C to +125°C.