LM6171AIMX

Linear-Amplifiers-Instrumentation, OP Amps, Buffer Amps

The LM6171AIMX is a low-power, single-supply voltage instrumentation amplifier with a wide input common-mode range. The device is a high precision, low-distortion operational amplifier, available in SO and MSOP packages.

The LM6171AIMX offers low common-mode offset voltage and low noise. The device also features an enhanced input bias current which is optimized for a variety of power and speed requirements. The device features a single-pole active output and a level-shift variable gain which provides gain up to 200 V/V. The device also features an integrated current source which improves noise performance. Additionally, the device features an enabled zero-crossover feature which allows for low drift operation.

The LM6171AIMX is designed to provide wide dynamic range, low distortion, high speed and efficiency to applications such as: instrumentation amplifiers, sensor monitoring, and analog-to-digital conversion. The device is also well suited for programmable instrumentation, stabilized power supplies, and digital signal processing. The device is fully specified for operation from a single supply voltage of from 2.7V to 5.25V.

Working Principle

The LM6171AIMX is a two-stage instrumentation amplifier which utilizes a resistive feedback network. The first stage amplifies the differential input signal generated by the two inputs. One lead of each input is connected to a PVC-DRM amplifier which serves as a differential amplifier. The other lead of each input is connected to a resistor network. The output of the first stage amplifier is then buffered by a voltage follower stage which is driven by the feedback network. The output of the second stage provides the amplified signal.

The second stage amplifier utilizes a single-pole active output stage to minimize distortion and noise. The single-pole active output stage offers a wide dynamic range and excellent distortion performance. Additionally, the active output offers a low input offset voltage and excellent rejection of interference. The device also features a level-shift variable gain which offers up to 200mV/V. This level-shift feature enables the LM6171AIMX to operate over a wide range of input common-mode voltages.

Applications

The LM6171AIMX is ideal for use in instrumentation, signal conditioning, and analog-to-digital conversion applications. The device is well suited for a variety of applications, such as:

• Sensor Monitoring
• Programmable Instrumentation
• Stabilized Power Supplies
• Digital Signal Processing

In addition to its use for signal processing and conditioning, the LM6171AIMX can also be used for calibration and test applications. The device is well suited for measuring small, low-level signals, as well as for performing A2D conversion in low-noise environments. The single-pole active output makes it suitable for use in wireless applications, as well as for driving low-impedance components.

The LM6171AIMX is ideal for applications which require wide dynamic range, low distortion, and low power consumption. Its low noise performance, low power consumption, and integrated current source make the device particularly well suited for a variety of instrumentation and medical applications.