THS4021CDGNR

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The THS4021CDGNR is a high-performance precision instrumentation amplifier (IA) available from Texas Instruments that is designed for accurate, low-noise signal processing and is well suited for a variety of applications such as sensing, instrumental analysis, monitoring, feedback control and medical diagnostics. This versatile amplifier offers the highest performance in a very small package, with excellent noise performance and low distortion.

Instruments Amplifiers (IA) are commonly used in a variety of applications to provide amplifying and/or buffering of weak signals generated by sensors or detectors. It can amplify signals with high common-mode rejection, allowing the user to measure a small input signal while rejecting any large interfering signals. IAs are usually two-stage amplifiers which consists of a differential amplifier in the first stage and a second stage comprised of either an impedance converter or a differential amplifier.

The THS4021CDGNR is a precision IA that has a very low noise level (2.5nV/sqrt Hz) and wide gain bandwidth product of 150MHz (at a gain of 10V/V). It also has a high level of power supply rejection ratio (95dB) and an input voltage range of 0 to 5.5V (2.5V typical). The THS4021CDGNR has a high common mode rejection ratio (CMRR) of 105dB, making it ideal for differential sensing applications where sources with large common-mode signals are present. Additionally, the device features a low input bias current of 50pA, which ensures stable and reliable operation in noisy environments.

The THS4021CDGNR amplifiers are available in 8-lead SOIC or the TI LFCSP package and operate over a wide temperature range from -40°C to +85°C. The device is also fully RoHS compliant, making it ideal for use in green applications. THS4021CDGNR IAs have an adjustable gain from 0 to 10V/V and offer a typical slew rate of 40V/us. They offer rail-to-rail output for optimal signal range.

The THS4021CDGNR can be configured as a non-inverting or inverting amplifier depending on the user\'s application. In a non-inverting configuration, the feedback loop of the amplifier utilizes a resistor-divider network, which sets the gain of the amplifier. In an inverting configuration, the feedback loop is constructed with two resistors connected in parallel between the output and the inverting input. The gain of the device can be set by varying the ratio between the two resistors.

In summary, the THS4021CDGNR is an excellent choice for precision instrumentation and signal processing applications due to its high level of performance. It offers excellent noise performance, low distortion, and high power supply rejection ratio. The adjustable gain provided by the device makes it versatile in a wide range of applications. Additionally, the device is made with RoHS compliant materials, making it suitable for green applications and is available in 8-lead SOIC or TI LFCSP package for easy integration.

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