TSV912IYDT

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The TSV912IYDT is an instrumentation amplifier using a rail-to-rail input and making a performance breakthrough among low-power CMOS amplifiers. As a key component of instrumentation amplification applications, TSV912IYDT can provide its users with an optimal balance of noise and power dissipation. As one of the technology leading amplifier manufacturers, Texas Instruments is proud to introduce the TSV912IYDT that sets a new performance trend in the market of low-power CMOS amplifiers.

Application Field

TSV912IYDT is a rail-to-rail input CMOS instrumentation amplifier that is widely applicable to instrumentation, sensor, and transducer amplifiers, where precision, power consumption, and power supply operation are the major considerations. It can be used to measure the current and voltage signals that the super-low-power sensor systems detect and amplify, reducing noise and providing improved stability and accuracy. It can also be used in automatic control systems to detect current and voltage changes and to provide highly accurate signal amplitudes. In a microcomputer system, it can also be used to monitor current and voltage changes and monitor system operations.

Working Principle

Unlike traditional instrument amplifiers, TSV912IYDT is a rail-to-rail input device. The input stage is composed of an operational transconductance amplifier (OTA) and a high-performance CMOS op-amp. The OTA will transform the input current into a voltage signal and then feed it into the op-amp. The amplified output of the op-amp will be converted back to a current signal and sent to the output stage of the amplifier. The output stage is composed of two amplifiers that have excellent voltage-to-current conversion characteristics. The output stage is designed to provide excellent linearity and low offset voltage.

Using the transimpedance configuration, TSV912IYDT can get a specified maximum peak output current for a given supply voltage. This high common-mode rejection is achieved by using a low-noise input stage and a high-impedance output stage. The low-noise input stage includes the OTA, the input stage of the op-amp, and the power supply rejection ratio (PSRR). The op-amp’s gain is determined by the gain bandwidth product (GBWP) of the two stages.

The input and output stages of the TSV912IYDT are optimized using a combination of industry-leading design tools and principles. The main feature of the TSV912IYDT is the outstanding linearity, stability, noise performance, and power-to-noise specifications, making it the prefect solution for high performance instrumentation and sensor applications.

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