LTC7545ABG#PBF

The LTC7545ABG#PBF is a precise, rail-to-rail, low-power digital to analog converter (DAC) designed for use in data acquisition systems. It is designed with a differential-FET architecture for low-power operation and precise, monotonic performance. The device offers a high-resolution conversion range of 2-14 bits and low power consumption. It features a 16-bit programmable voltage reference input, which can be used to maintain a precise voltage output level over temperature, time and input voltage.

The LTC7545ABG#PBF also includes a power-on-reset (POR) circuit, which enables the device to reset to a predetermined value upon power up. A shutdown pin is provided to turn off the power consumption while holding last data. The device utilizes an externally-programmable output voltage range selection, allowing the user to select between two different voltage ranges.

The innovative architecture of the LTC7545ABG#PBF allows it to operate with high accuracy and low power consumption, making it ideal for powering data acquisition systems in applications where accuracy, low power and a wide voltage range are required. It is also suitable for battery-powered devices as well as for high accuracy, low power measurements in field operations. The LTC7545ABG#PBF is available in a QFN-24 package.

The working principle of the LTC7545ABG#PBF is based on its 8-bit differential-FET architecture. This architecture allows for efficient current-steering from a differential input to an output node. When the user provides an input voltage, set at the reference voltage, the differential FETs output a current that is proportional to the difference between the reference voltage and input voltage. This output current is then converted to a voltage using the attached high-resolution resistor network.

The output voltage is then compared with the reference voltage and the difference compared with the input voltage. If the difference is greater than specified, the output voltage is adjusted accordingly. This process continues until the difference between the reference voltage and the input voltage is minimized. In this manner, the output voltage is adjusted and maintained at a precise level.

The LTC7545ABG#PBF is an ideal choice for powering data acquisition systems that require accuracy, low power consumption and a wide input voltage range. This cost-effective solution is designed to meet the needs of many applications including robotics, instrumentation, medical and automotive. Additionally, its wide voltage range, monotonic performance and high-resolution conversion makes it well suited for powering precision measurement equipment.