TLV2473ID

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The TLV2473ID is an instrumentation amplifier (IA) which is classified under the linear amplifiers and consists of operational amplifiers (OP Amp) and buffer amplifiers. This amplifier is used in commercial and consumer applications, such as consumer electronics and industrial sensors. The TLV2473ID is a low-noise, low-power, low-offset IA with a high common-mode rejection ratio (CMRR). It has a differential input voltage range of ±36V and is able to operate from a single +5V supply voltage, with a maximum output voltage of 5V (3V optional). Additionally, this IC features a selectable gain range from 6 – 180 dB (typical), high common-mode rejection ratio (CMRR), and a wide power supply voltage range.

The TLV2473ID is an integrated circuit designed with an on-chip temperature and input offset compensation. This compensation is provided by the use of a 4-input OTA and one voltage-controlled offsetting circuitry. The TLV2473ID is suitable for high-precision, low-noise applications by providing wide common-mode rejection, high input impedance, low-offset, and temperature stability. Depending on the application requirements, the TLV2473ID can be configured with a wide range of gains, such as 6 dB, 12 dB, 24 dB, and others up to 180 dB.

The TLV2473ID also provides on-chip dielectric isolation, which ensures a low-power consumption and facilitates the use of the amplifier in cost-sensitive applications. Moreover, it can operate over a wide temperature range (−40°C to +125°C), and it has good electrical characteristics such as a high common-mode rejection ratio, high input impedance, and a low output noise level. In addition, the IC incorporates two pairs of matched PMOS FET source followers providing a very low power consumption in a wide range of applications. This amplifier offers very good common-mode rejection over the entire gain range, up to 180 dB.

The working principle of the TLV2473ID is based on the use of four input transistors, two for differential inputs and two for the common-mode inputs. It uses a pair of matched PMOS FET source followers to buffer the output voltage level and reduce the power required for operation. A voltage-controlled offsetting circuitry is employed for the common-mode inputs, allowing for a very low-offset and low-offset drift. The on-chip dielectric isolation enhances the circuit’s ability to provide a high common-mode rejection ratio (CMRR). Additionally, the on-chip temperature and input offset compensation provides improved temperature stability and low-offset behavior.

The TLV2473ID is an ideal amplifier option for a variety of precision control applications that require low-power, low-noise, and wide common-mode rejection. Its flexible gain settings and wide power supply range make it suitable for a variety of signal conditioning and signal amplification tasks. It has the ability to accept a wide range of input voltages and output voltages, as well as high input impedance, making it an excellent choice for data acquisition and sensor interfaces.

The TLV2473ID is a very useful instrumentation amplifier for a variety of applications requiring low-offset, low-power, and low-noise performance. Its wide common-mode rejection and high input impedance make it suitable for use in numerous demanding commercial and consumer applications. The on-chip temperature and input offset compensation give it superior temperature stability, further enhancing its performance for a wide variety of applications.

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