LTC2637IDE-LMX8#PBF

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The LTC2637IDE-LMX8#PBF is an 8-bit voltage digital-to-analog converter (DAC). This integrated device is capable of producing a control voltage output range of 0 to 2.5V through a voltage midscale output that is buffered and amplified for use with a microprocessor, DSP, or ADC. The device is perfect for applications including closed loop control systems, power supply control and analog sensor interfaces. The device is programmable over a two-wire series interface.

The LTC2637IDE-LMX8#PBF has an integrated charge pump, which provides the necessary supply voltage for the output amplifier. This includes diodes for the proper polarity and clamping. The charge pump also creates a more dynamic response and greater reliability. This DAC is capable of accurate control parameters that can be monitored and adjusted easily with the interface.

As is the case with all DACs, the LTC2637IDE-LMX8#PBF provides analog output by taking a digital input and converting it to an analog output. The digital input is composed of a set of binary values that are encoded into the analog output. The resolution of the analog output is determined by the total number of digital input bits.

The digital input consists of 8 bits in the range 0 through 255, which is encoded into an analog output range of 0 to 2.5V. This produces a resolution of 39mV per bit. The voltage reference that is used to convert the data from the DAC is determined by the supply voltage and the values of the reference resistors that are connected to the device. The reference resistors are programmable, so the midscale voltage can be adjusted to any desired level.

The driving voltage for the LTC2637IDE-LMX8#PBF is provided by an internal charge pump. This charge pump enables the device to operate from a single supply voltage. The charge pump also generates a wide range of operating voltage from 1.8V to 5.5V, which makes it ideal for use in portable or battery powered applications.

The conversion time of the device is determined by the input clock speed. At a frequency of 2MHz, the conversion time is 125ns. The power-down mode is useful for reducing power consumption in applications that require long periods of inactivity. With the power-down mode enabled, the device can achieve reduced idle power consumption of less than 0.5μW.

The LTC2637IDE-LMX8#PBF has an on-chip driver that can source current up to 8mA with a full scale output that can drive up to 6V. This device also has an output power-down feature, which allows the output voltage to be reset to either the midscale voltage or zero volts.

The device also has low noise, low drift and low power consumption performance characteristics. The low noise performance is due to its high resolution and low noise amplifier. The low drift characteristics enable the device to provide constant and accurate analog control voltages. The low power consumption allows the device to operate for extended periods of time without having to worry about draining the battery.

The LTC2637IDE-LMX8#PBF is especially useful for applications that require precision analog control and accurate conversion of digital data. These applications include closed loop control systems, power supply control, analog sensor interfaces, digital audio and video systems, telecommunications systems, and medical instrumentation.

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