LTC2642IDD-14#PBF

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Data Acquisition – Digital to Analog Converters (DAC) play a pivotal role when dealing with tasks or systems relevant to control, measurement and automation. LTC2642IDD-14#PBF, a high accuracy 10/12-bit octal buffered voltage output DAC is no exception. This device is featured by its wide bandwidth, low noise, low power and high reliability.

LTC2642IDD-14#PBF is ideal for use in applications such as simulation (welding, laser power control, etc.), industrial equipment control, patient monitoring and medical instrumentation, precision control circuitry, portable instrumentation, and analog component emulation.

The device’s working principle is based on external reference voltage, serial data word and internal clock. The reference voltage is set externally, which is used to adjust the full-scale differential voltage output by the DAC. Then, using the clock signal and serial data, the digital data is converted into an analog voltage. Since the device is externally trimmed for accuracy, it provides 10/12-bits resolution with 3-2LSB differential nonlinearity over a wide temperature range.

The LTC2642IDD-14#PBF features an internal power on reset circuit which ensures the DAC outputs an initial zero code at power up. However, the DAC outputs can be programmed using the serial data input through SPI/SSI-compatible interface. The outputs can be updated either continuously or on instruction request. The DAC also functions with a Hybrid Mode, which allows the DAC bias current to be adjusted independently of the clock rate and the full-scale output voltage.

The device has an adjustable dual gain range that enables it to operate in two different power ranges with low power consumption, making it possible for the device to be easily integrated into battery-powered systems. Stretching from -5V to +10V, the range of LTC2642IDD-14#PBF’s output voltage options and the flexibilty in control options make it useful in applications that require precise voltage control.

The octal buffer amplifier on board LTC2642IDD-14#PBF can drive up to 10 load capacitances with less than 1µs settling time, making it suitable in applications that require fast, simultaneous updates of multiple DACs. Moreover, the device also has a TTL/CMOS compatible shutdown pin which can be used to turn off the DAC, minimizing power consumption. The short-circuit protection offered by the device enables the DAC to easily survive an overload condition.

Overall, LTC2642IDD-14#PBF offers a great combination of features that make it an excellent choice for systems that have to cope with demanding data acquisition tasks. With its wide range of voltage control and low-power operation, it offers solutions that are both accurate and energy-efficient.

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