INA129UA/2K5 Integrated Circuits (ICs)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The INA129UA/2K5 is a precision multiplexed instrumentation amplifier with a wide range of applications. It is ideal for single and multi-channel bridge measurement applications or for signal conditioning in industrial or consumer applications.

This device is built using a bi-polar input and differential input transistors arranged in a ‘Nested Miller’ topology. This allows for high input impedance and wide output dynamic range. The differential input transistors also minimize the effects of common-mode signal injection, allowing for accurate bridge measurements.

The INA129UA/2K5 has a wide signal bandwidth of 25kHz, with a low-level noise of 0.65μV. This is achieved by using a low power, high gain differential input transistor with a very low input trans-conductor leakage current. The device also features low noise, low power operation.

Typically, the INA129UA/2K5 is used as a signal conditioner for bridge-based sensors such as strain gauges, accelerometers and load cells, as well as for digital isolators or for providing both signal conditioning and isolation for PLCs or multi-channel data acquisition systems.

The working principle behind the INA129UA/2K5 is the ‘Nested Miller’ topology, which is based on the use of two differential pairs of transistors connected in a specific ‘Nested Miller’ configuration that allows for a higher input impedance and wide output dynamic range.

The two differential transistors are separated by a ‘grounded gate’ that creates a cascading effect between the two transistors. The input voltage applied to the amplifier is compared against the differential transistors in the ‘Nested Miller’ configuration. The differential transistors then output a difference signal that is amplified as prescribed by the gain settings.

The amplified difference signal is sent to a common-mode feedback circuit that eliminates common-mode voltage errors and ensures accuracy over a wide range of input signals. Additionally, the input transistors are driven by an internal circuitry that optimizes the input bias current of the device for improved noise performance.

The INA129UA/2K5 is capable of providing both uni- and bi-polar output signals, allowing it to operate as a single-ended instrumentation amplifier as well as a differential amplifier. The device features adjustable gain settings, as well as adjustable offset and swing settings. Also available is a temperature range of –25° to +85°C.

Overall, the INA129UA/2K5 is an extremely versatile instrumentation amplifier that has wide applications in both industrial and consumer applications. With its many features, it can be used to condition and amplify signals, as well as to provide isolation for multi-channel data acquisition systems. The device’s low power and low noise operation, as well as its wide dynamic range, make it ideal for use in a variety of applications.

The specific data is subject to PDF, and the above content is for reference