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OPA991 ACTIVE Single, 40-V, 4.5-MHz, low-power operational amplifier Pin-to-pin upgrade with improved performance: lower Vos(0.75mV) and noise(10nV/√Hz), higher slew rate(21V/us) and output current(75mA)

Product details

Number of channels (#) 1 Total supply voltage (Max) (+5V=5, +/-5V=10) 30 Total supply voltage (Min) (+5V=5, +/-5V=10) 2.2 Rail-to-rail In, Out GBW (Typ) (MHz) 4 Slew rate (Typ) (V/us) 1.25 Vos (offset voltage @ 25 C) (Max) (mV) 6 Iq per channel (Typ) (mA) 0.6 Vn at 1 kHz (Typ) (nV/rtHz) 36 Rating Catalog Operating temperature range (C) -40 to 85 Offset drift (Typ) (uV/C) 2 Input bias current (Max) (pA) 200000 CMRR (Typ) (dB) 93 Output current (Typ) (mA) 9.5 Architecture Bipolar
Number of channels (#) 1 Total supply voltage (Max) (+5V=5, +/-5V=10) 30 Total supply voltage (Min) (+5V=5, +/-5V=10) 2.2 Rail-to-rail In, Out GBW (Typ) (MHz) 4 Slew rate (Typ) (V/us) 1.25 Vos (offset voltage @ 25 C) (Max) (mV) 6 Iq per channel (Typ) (mA) 0.6 Vn at 1 kHz (Typ) (nV/rtHz) 36 Rating Catalog Operating temperature range (C) -40 to 85 Offset drift (Typ) (uV/C) 2 Input bias current (Max) (pA) 200000 CMRR (Typ) (dB) 93 Output current (Typ) (mA) 9.5 Architecture Bipolar
SOIC (D) 8 19 mm² 4.9 x 3.9 SOT-23 (DBV) 5 5 mm² 2.9 x 1.6
  • At VS = 5 V (Typical Unless Otherwise Noted)
  • Tiny, Space-Saving, 5-Pin SOT-23 Package
  • Greater than Rail-to-Rail Input CMVR: −0.25 V to 5.2 V
  • Rail-to-Rail Output Swing: 007 V to 4.93 V
  • Wide Gain-Bandwidth: 4 MHz
  • Low Supply Current: 0.6 mA
  • Wide Supply Range: 1.8 V to 32 V
  • High PSRR: 104 dB
  • High CMRR: 93 dB
  • Excellent Gain: 97 dB
  • At VS = 5 V (Typical Unless Otherwise Noted)
  • Tiny, Space-Saving, 5-Pin SOT-23 Package
  • Greater than Rail-to-Rail Input CMVR: −0.25 V to 5.2 V
  • Rail-to-Rail Output Swing: 007 V to 4.93 V
  • Wide Gain-Bandwidth: 4 MHz
  • Low Supply Current: 0.6 mA
  • Wide Supply Range: 1.8 V to 32 V
  • High PSRR: 104 dB
  • High CMRR: 93 dB
  • Excellent Gain: 97 dB

The LM7301 provides high performance in a wide range of applications. The LM7301 offers greater than rail-to-rail input range, full rail-to-rail output swing, large capacitive load driving ability, and low distortion.

With only 0.6-mA supply current, the 4-MHz gain-bandwidth of this device supports new portable applications where higher power devices unacceptably drain battery life.

The LM7301 can be driven by voltages that exceed both power supply rails, thus eliminating concerns over exceeding the common-mode voltage range. The rail-to-rail output swing capability provides the maximum possible dynamic range at the output. This is particularly important when operating on low supply voltages.

Operating on supplies of 1.8 V to 32 V, the LM7301 is excellent for a very wide range of applications in low power systems.

Placing the amplifier right at the signal source reduces board size and simplifies signal routing. The LM7301 fits easily on low profile PCMCIA cards.

The LM7301 provides high performance in a wide range of applications. The LM7301 offers greater than rail-to-rail input range, full rail-to-rail output swing, large capacitive load driving ability, and low distortion.

With only 0.6-mA supply current, the 4-MHz gain-bandwidth of this device supports new portable applications where higher power devices unacceptably drain battery life.

The LM7301 can be driven by voltages that exceed both power supply rails, thus eliminating concerns over exceeding the common-mode voltage range. The rail-to-rail output swing capability provides the maximum possible dynamic range at the output. This is particularly important when operating on low supply voltages.

Operating on supplies of 1.8 V to 32 V, the LM7301 is excellent for a very wide range of applications in low power systems.

Placing the amplifier right at the signal source reduces board size and simplifies signal routing. The LM7301 fits easily on low profile PCMCIA cards.

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Technical documentation

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Type Title Date
* Data sheet LM7301 Low Power, 4-MHz GBW, Rail-to-Rail Input-Output Operational Amplifier in SOT-23 Package datasheet (Rev. I) PDF | HTML 22 Feb 2016
Technical article What is an op amp? 21 Jan 2020
Technical article How to lay out a PCB for high-performance, low-side current-sensing designs 06 Feb 2018
Technical article Low-side current sensing for high-performance cost-sensitive applications 22 Jan 2018
Technical article Voltage and current sensing in HEV/EV applications 22 Nov 2017
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note Improving Machinery Vibration Analysis 07 Jul 2006

Design & development

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Simulation model

LM7301 PSpice Model (Rev. A)

SNOM206A.ZIP (22 KB) - PSpice Model
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Design tool

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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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Simulation tool

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Package Pins Download
SOIC (D) 8 View options
SOT-23 (DBV) 5 View options

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