LTC2636HDE-LMI12#TRPBF

Reference Type:	External, Internal
Base Part Number:	LTC2636
Supplier Device Package:	14-DFN (4x3)
Package / Case:	14-WFDFN Exposed Pad
Operating Temperature:	-40°C ~ 125°C
Architecture:	--
INL/DNL (LSB):	±1, ±1 (Max)
Voltage - Supply, Digital:	2.7 V ~ 5.5 V
Voltage - Supply, Analog:	2.7 V ~ 5.5 V
Series:	--
Data Interface:	SPI
Differential Output:	No
Output Type:	Voltage - Buffered
Settling Time:	4.4µs (Typ)
Number of D/A Converters:	8
Number of Bits:	12
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to LTC2636HDE-LMI12#TRPBF

LTC2636HDE-LMI12#TRPBF is a single, low noise, high precision voltage output digital-to-analog converter (DAC) from Linear Technology. It is capable of outputting 12-bit resolution and 10V full-scale voltage with 0.08% initial accuracy, resulting in 4096-step numerically programmable output range from 0V to 10V. This combined with low power consumption and wide operating temperature range make the LTC2636HDE-LMI12#TRPBF ideal for a variety of application fields.

Application Fields

In the field of industrial process control, the LTC2636HDE-LMI12#TRPBF can be used to control the temperature of heating ovens or liquid tanks. By varying the voltage output of the DAC based on feedback readings, the temperature can be accurately set and maintained to an arbitrarily small variance. In the field of electrical engineering, the LTC2636HDE-LMI12#TRPBF can be used to monitor and control the power output of an AC voltage source. By providing an analog voltage output that is proportional to the voltage in the AC source, the LTC2636HDE-LMI12#TRPBF can be used to accurately regulate the current distribution.Finally, the engineering hobbyist may find uses for the LTC2636HDE-LMI12#TRPBF in the field of robotics. By connecting the LTC2636HDE-LMI12#TRPBF to a microcontroller, servos or actuators can be accurately programmed to follow the voltage commands from the DAC. This allows the exact positioning of robotic limbs or mechanisms with the required number of steps.

Working Principle

The functioning of the LTC2636HDE-LMI12#TRPBF is based on the conversion of digital data into an analog signal.Internally, the LTC2636HDE-LMI12#TRPBF is made up of two main parts, a reference and a current compensation circuit. First, a reference voltage is generated either by an internal reference or an external reference. This output is divided down and connected to a DAC, usually a binary-weighted capacitor array, which outputs a voltage proportional to the digital input. This voltage is then summed with the output of the current compensation circuit, which is composed of an adjustable current source. Finally, the resulting output is filtered and buffered in order to obtain a low-noise voltage.The digital-to-analog conversion process of the LTC2636HDE-LMI12#TRPBF is relatively simple. Each bit of the digital code is applied to a separate input of the DAC, and each input controls a respective current weighting resistor. The sum of all of the currents passes through the resistor at the output of the DAC. Based on the binary weighting of the DAC, the resulting voltage will be proportional to the binary input code.

Conclusion

The LTC2636HDE-LMI12#TRPBF is ideal for industrial process control, electrical engineering, and hobbyist robotics applications. By leveraging its 12-bit resolution and 10V full-scale voltage to accurately convert digital data into an analog signal, the LTC2636HDE-LMI12#TRPBF offers a wide range of capabilities for these application fields.

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