LMV341MGX/NOPB

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LMV341MGX/NOPB Application Field and Working Principle

The LMV341MGX/NOPB is an ultra-low power, single-supply, rail-to-rail Operational Amplifier from Texas Instruments. The product is designed for a wide range of applications including portable instrumentation, thermostats, sensor amplifiers, automatic test equipment (ATE) and fully compact battery powered systems. It is available in the industry-standard SOIC-8 package, offering improved design and performance.

The LMV341MGX/NOPB is an ultra-low power, rail-to-rail output Stage Operational Amplifier, with a noise level of 6 nV/√Hz. Operating from a single supply with a wide input common mode range, it offers an output common mode range of 0 to VCC-1.5 V. This allows for an output voltage to operate over an input voltage range of 0 to VCC without any clip detection circuitry.

The LMV341MGX/NOPB operates with a wide input voltage range, from 2.7 V to 18 V and is capable of driving rail-to-rail outputs up to 16 mA. Its high open-loop gain of 50 dB and low offset voltage enables it to perform with high accuracy over a wide temperature range. The device also features a low power consumption of 8 mA, making it ideal for portable applications.

Features

• High open-loop gain of 50 dB (at 1 kHz)
• Low offset voltage: 400 µV (max.)
• Wide input common mode range: 0 V to VCC-1.5 V
• Low power consumption: 8 mA
• High output current drive: 16 mA
• Higher slew rate: 4.4 V/µs
• Small form factor: SOIC-8

Applications

• Portable Instrumentation
• Thermostats
• Sensor Amplifiers
• Automatic Test Equipment (ATE
• Battery powered systems

Working Principle

The LMV341MGX/NOPB utilizes an advanced folded cascode technology to offer an ultra-low power, rail-to-rail output stage. This allows for an output voltage to operate over an input voltage range of 0 to VCC without any clip detection circuitry. The device has a very wide input common mode range of 0 V to VCC-1.5 V and a high open-loop gain of 50 dB (at 1 kHz). Its high open-loop gain and low offset voltage enable it to perform with high accuracy over a wide temperature range.

The LMV341MGX/NOPB has an input stage consisting of two voltage amplifying transistors, with differential inputs. The internal gain is set by an internal resistance, which is implemented by a trans-impedance amplifier. The output stage operates in a rail-to-rail mode and consists of a transistor-level stage and a MOSFET current mirror. The output stage is also capable of providing high output currents up to 16 mA and has a higher slew rate than other standard Operational Amplifiers.

Overall, the LMV341MGX/NOPB offers excellent performance and low-power consumption in a small form factor, offering improved design and performance for portable instrumentation, thermostats, sensor amplifiers, automatic test equipment and battery powered systems.

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