LTC2634IUD-HZ12#TRPBF

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Digital to Analog Converters (DAC) are essential for data acquisition systems, providing the ability to digital output signals to analog domains. The LTC2634IUD-HZ12#TRPBF is a 12-bit voltage output DAC with an on-board reference that provides the highest accuracy in a very small package. This makes it ideal for a wide range of applications from industrial and scientific to medical and consumer.

Features

The LTC2634IUD-HZ12#TRPBF includes features such as a low quiescent current of 10µA and power-down functions. It is operated using a Serial Peripheral Interface (SPI) compatible 3-wire bus and also has shutdown capability. The power-down function allows the DAC to be put in a very low quiescent current mode when not needed to keep current draw at a minimum.

The LTC2634IUD-HZ12#TRPBF also features an external reference input that allows the user to adjust the output voltage range. With its integrated reference, the output voltage range is 0V to V_REF. With an external reference, the output range can be adjusted from 0V to V_EXT, allowing for greater flexibility and easier pairing with other digital systems.

Application field

The versatile nature of the LTC2634IUD-HZ12#TRPBF makes it suitable for a wide range of applications. Its low quiescent current, combined with its power-down mode, makes it ideal for use in battery-powered applications. Its small size and wide range of output voltage ranges make it suitable for space-constrained applications such as inside a PCB or a hand-held device.

The LTC2634IUD-HZ12#TRPBF is also suitable for industrial and scientific applications as it can handle large dynamic range signals and is resilient against EMI and electrical noise. With its SPI-compatible bus communication interface, it can be easily integrated into µProcessors, µControllers, and other digital signal processing systems.

The LTC2634IUD-HZ12#TRPBF is also suitable for medical and biometric applications, providing reliable and precise output for biological signal transduction systems. Its low quiescent current and power-down modes make it ideal for low-power precision measurement and monitoring systems.

Working Principle

The LTC2634IUD-HZ12#TRPBF uses a 3-wire serial interface for communication with the external processor. The Control bit defines whether the desired output code is written to the DAC register (Decrypt and Load) or is used to increment or decrement the DAC value (Increment, Decrypt and Load). The data bits define the output code to be written (in decimal format).

The LTC2634IUD-HZ12#TRPBF uses voltage output instead of current output. It determines the output voltage by multiplying the reference voltage (V_REF) value by the DAC code that was written to the register. This output voltage can be adjusted using an external voltage reference or using the onboard reference. By changing the reference voltage, the output voltage can be altered to match the required specification.

The LTC2634IUD-HZ12#TRPBF is also equipped with integrated power-down function that can be used to reduce the quiescent current during idle periods. When the power-down mode is activated, the device is effectively shut off, reducing power consumption to a very low level.

The LTC2634IUD-HZ12#TRPBF is a versatile DAC that provides a wide range of features and applications in a very small package. Its power-down, integrated reference and SPI compatible bus make it ideal for use in low-power systems such as battery-powered medical and consumer applications.

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