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LMV981IDBVR Application Field and Working Principle

The LMV981IDBVR is a low voltage, single supply, rail-to-rail output buffer amplifier that provides a maximum of ±3.8V of output swing, with inputs referenced to the single power supply. This low voltage capability makes the LMV981IDBVR ideal for a variety of single supply applications including instrumentation, OP amps, buffered amplifiers, and A/D digital-to-analog (D/A) converters. The LMV981IDBVR can also be used in battery-powered instruments, computers, and other operational amplifiers.

Features

• ±3.8V Output Swing
• Rail-to-Rail Output Range
• 3V to 36V Single Supply
• Low Quiescent and Offset Currents
• Output Short-Circuit Protection
• Gain-Bandwidth Product: 4MHz

Working Principle

The LMV981IDBVR is a low voltage, single-supply, rail-to-rail output buffer amplifier. It operates on a single power supply voltage between 3V and 36V. This device utilizes a patented high-voltage current-mode architecture, which enables the output voltage swing to extend to within typically 0.3V of each supply rail. The output can swing rail-to-rail when the input is driven from the rail. Quad-channel versions of the device, the LMV981Q and the LMV982Q, are also available.

The LMV981IDBVR has a low quiescent current of 5mA and low offset current of 2.5mA. This makes it ideal for low-power applications such as battery-powered instruments and A/D D/A converters. The device is available in an 8-Pin µMAX package.

The LMV981IDBVR is a general-purpose buffer amplifier that is well-suited for buffering signals in power systems, instrumentation and monitoring applications. It is also ideal for applications where a rail-to-rail output is required. The device can operate over a wide temperature range (–40°C to +85°C).

The LMV981IDBVR has a gain-bandwidth product of 4MHz, making it suitable for high speed applications. The output is internally current limited and has temperature and load regulation, providing rail-to-rail output swing in single supply applications. The LMV981IDBVR is optimized for low output offset voltage, and has a supply current of 10mA with a 1k load. In addition, the device is permanently enabled, saving power when the device is idle.

Applications

• Instrumentation
• OP Amps
• Buffered Amplifiers
• A/D Digital-to-Analog (D/A) Converters
• Battery-Powered Instruments, Computers
• Other Operational Amplifiers

The LMV981IDBVR is an ideal choice for applications that require low voltage, low power consumption, and wide operating temperature range. The device is well-suited for a variety of single supply applications, and can be used to buffer signals in power systems, instrumentation and monitoring applications. It is also suitable for low-voltage, low-power applications such as battery-powered instruments and A/D D/A converters. The LMV981IDBVR is an ideal choice for applications requiring rail-to-rail output swing and low output offset voltage.

Conclusion

The LMV981IDBVR is a low voltage, single-supply, rail-to-rail output buffer amplifier. It has a gain-bandwidth product of 4 MHz, low quiescent current of 5mA and low offset current of 2.5mA, making it ideal for low-power applications such as battery-powered instruments and A/D D/A converters. It is optimised for low output offset voltage with a supply current of 10mA with a 1k load. The LMV981IDBVR is suitable for a variety of single supply applications including instrumentation, OP amps, buffered amplifiers, and A/D digital-to-analog (D/A) converters.

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