OPA891 Series

180-MHz 0.95-nV√Hz operational amplifier with ultra-low total harmonic distortion (THD)

Catalog

180-MHz 0.95-nV√Hz operational amplifier with ultra-low total harmonic distortion (THD)

Part	Mounting Type	Slew Rate	-3db Bandwidth	Output Type	Current - Output / Channel [custom]	Voltage - Supply Span (Max) [Max]	Voltage - Input Offset	Amplifier Type	Current - Input Bias	Number of Circuits	Gain Bandwidth Product	Operating Temperature [Max]	Operating Temperature [Min]	Current - Supply	Package / Case	Package / Case [custom]	Package / Case [custom]	Supplier Device Package	Package / Case [y]	Package / Case [x]
Texas Instruments OPA891DGNR	Surface Mount	105 V/µs	135 MHz	Push-Pull	200 mA	36 V	200 çV	Standard	9 µA	1	180 MHz	85 °C	-40 °C	7.5 mA	8-MSOP 8-PowerTSSOP	3 mm	0.118 in	8-HVSSOP
Texas Instruments OPA891DR	Surface Mount	105 V/µs	135 MHz	Push-Pull	200 mA	36 V	200 çV	Standard	9 µA	1	180 MHz	85 °C	-40 °C	7.5 mA	8-SOIC			8-SOIC	3.9 mm	0.154 in

Catalog

180-MHz 0.95-nV√Hz operational amplifier with ultra-low total harmonic distortion (THD)

Key Features

• Ultra-low 0.95nV/√Hz voltage noiseHigh speed:180MHz unity gain bandwidth140MHz bandwidth at a gain of 2V/V (–1V/V)105V/µs slew rateVery low distortionTHD = –91dBc (f = 1MHz, RL = 150Ω)THD = –100dBc (f = 1MHz, RL = 1kΩ)THD+N = –137dBc (f = 1kHz, BW = 80kHz)Low 0.2mV (typical) and 1mV (maximum) input offset voltage at 25°C200mA output current drive (typical)Typical operation from ±4.5V to ±18VOffset nulling pins on the OPA891Ultra-low 0.95nV/√Hz voltage noiseHigh speed:180MHz unity gain bandwidth140MHz bandwidth at a gain of 2V/V (–1V/V)105V/µs slew rateVery low distortionTHD = –91dBc (f = 1MHz, RL = 150Ω)THD = –100dBc (f = 1MHz, RL = 1kΩ)THD+N = –137dBc (f = 1kHz, BW = 80kHz)Low 0.2mV (typical) and 1mV (maximum) input offset voltage at 25°C200mA output current drive (typical)Typical operation from ±4.5V to ±18VOffset nulling pins on the OPA891

Description

The OPA891 and OPA2891 (OPAx891) are ultra-low voltage noise, high-speed voltage feedback amplifiers that are an excellent choice for applications requiring low voltage noise, including communications and imaging. The single-amplifier OPA891 and the dual-amplifier OPA2891 offer very good ac performance with 140MHz bandwidth, gain (G) = 2V/V, 105V/µs slew rate, and 70ns settling time (0.1%). The OPAx891 are unity-gain stable with 180MHz bandwidth. These amplifiers have a high drive capability of 200mA and draw only 7.5mA supply current per channel. With –100dBc of total harmonic distortion (THD) at f = 1MHz and a very low noise of 0.95nV/√Hz, the OPAx891 are designed for applications requiring low distortion and low noise such as buffering analog-to-digital converters. The OPA891 and OPA2891 (OPAx891) are ultra-low voltage noise, high-speed voltage feedback amplifiers that are an excellent choice for applications requiring low voltage noise, including communications and imaging. The single-amplifier OPA891 and the dual-amplifier OPA2891 offer very good ac performance with 140MHz bandwidth, gain (G) = 2V/V, 105V/µs slew rate, and 70ns settling time (0.1%). The OPAx891 are unity-gain stable with 180MHz bandwidth. These amplifiers have a high drive capability of 200mA and draw only 7.5mA supply current per channel. With –100dBc of total harmonic distortion (THD) at f = 1MHz and a very low noise of 0.95nV/√Hz, the OPAx891 are designed for applications requiring low distortion and low noise such as buffering analog-to-digital converters.