TLC2551IDR

Number of A/D Converters:	1
Base Part Number:	TLC2551
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C
Features:	--
Voltage - Supply, Digital:	5V
Voltage - Supply, Analog:	5V
Reference Type:	External
Architecture:	SAR
Series:	--
Ratio - S/H:ADC:	1:1
Configuration:	S/H-ADC
Data Interface:	SPI
Input Type:	Single Ended
Number of Inputs:	1
Sampling Rate (Per Second):	400k
Number of Bits:	12
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to ADC

Analog to digital converters (ADC)s are essential circuits used in data acquisition systems to obtain accurate digital representation of analog signals. ADCs convert analog signals into digital signals by transforming the input analog signals into a sequence of digital codes. They are commonly used to convert analog thermocouples, thermistors and other temperature sensing devices into digital data format.

TLC2551IDR

The TLC2551IDR is a 12-bit voltage-output digital-to-analog converter (DAC). It belongs to the Texas Instruments family of integrated circuits and is considered as one of the most popular digital-to-analog converters. The TLC2551IDR is a single-supply, rail-to-rail output with a maximum output range of up to 5 V. It consists of an advanced analog circuitry and low-noise capacitors which offer high immunity from supply and temperature variations. Low power consumption and small package size make the TLC2551IDR an ideal choice for various applications.

TLC2551IDR Application Field

The TLC2551IDR has many applications in the field of data conversion and signal processing, such as:

• Industrial measurement and control, including temperature sensors, pressure transducers, weight and strain gauges, and vibration measurements.
• Automotive and avionic data conversion.
• Electronic displays, including LED and LCD displays.
• Position sensors and navigation systems.
• Robotics and automated manufacturing.

TLC2551IDR Working Principle

The TLC2551IDR works on the concept of voltage-to-digital conversion. It converts an analog voltage into a 12-bit digital code. The analog signal is converted by the input stages to an internal voltage which is read by the 12-bit successive approximation register (SAR). The SAR register continuously samples the input voltage and changes its internal 12-bit value until it matches the analog signal. The resulting digital code is then available at the output of the device.The internal operation of the TLC2551IDR is managed by an analog processing block and a digital control logic. The analog processing block consists of the input stages, analog transfer functions, and output update logic. The digital control block contains the microprocessor interface port for external programming, the address bus, and the control bus. The output register in the device updates the output signal every 1.5ms.

Conclusion

The TLC2551IDR is a popular choice for various applications due to its low power consumption and small package size. It is capable of providing accurate digital representation of analog signals up to 12-bits. The device is simple to use and is managed by the internal analog processing and digital control blocks. It is ideal for applications such as industrial measurement and control, automotive and avionic data conversion, and position sensing.

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