AD7547LPZ-REEL

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Introduction:

Data acquisition systems are used to capture, store, and process analog and digital signals from sensors, instruments and other equipment. Digital to analog converters (DACs) are the key components of these systems which convert digital values into analog signals. Among DACs, the AD7547LPZ-REEL is an 8-bit, voltage-output, microprocessor compatible DACs which offer a wide range of performance and features for data acquisition applications.

AD7547LPZ-REEL application field and working principle

Application Field:

The AD7547LPZ-REEL is used in a variety of data acquisition and embedded control applications, including automotive, industrial control, avionics, and medical systems. Automotive applications include HVAC controllers, airbag controllers, brake and suspension controllers, instrument clusters, and automotive infotainment and navigation systems. Industrial systems use the AD7547LPZ-REEL in temperature, pressure, and motor controllers, as well as in process control systems. Avionics applications include altitude, speed, and heading systems. The AD7547LPZ-REEL is suitable for medical systems such as ventilation and patient monitoring systems.

Working Principle:

The AD7547LPZ-REEL is an 8-bit monolithic CMOS voltage-output DAC. The AD7547LPZ-REEL operates from a single +5 V supply and is microprocessor compatible. An external reference input is provided for use with systems employing split power supplies or for applications that do not use +5 V as the reference voltage. The AD7547LPZ-REEL also has an active-low reset line that can be used to reset the DAC output to 0 V without disrupting the system\'s operation.

The digital input to the AD7547LPZ-REEL is an 8-bit parallel port. The digital input is a 3-state port, allowing the DAC to be connected to a microprocessor without the need for external logic. The DAC accepts a digital input code of 0 - 255, corresponding to an output voltage range of 0 - VREF (where VREF is the reference voltage applied to the VREF input pin).

The AD7547LPZ-REEL provides a high accuracy, linear output voltage of 0 - VREF with an 8-bit resolution. The accuracies for the AD7547LPZ-REEL are +/-0.4% full-scale accuracy over the temperature range of -50°C to +85°C for a 0 - +5 V VREF, and +/-0.2% full-scale accuracy over the temperature range of -25°C to +85°C for a 0 - 10 V VREF.

The AD7547LPZ-REEL has a very low output impedance and is capable of driving a load of up to 500 pF. It also has a very low power consumption (<2 mW) and operates over a wide temperature range (-40°C to +85°C).

Conclusion:

The AD7547LPZ-REEL is an 8-bit, voltage-output DAC which offers a wide range of performance and features for data acquisition applications. It is used in a variety of automotive, industrial, avionics, and medical systems. It provides a high accuracy, linear output voltage of 0 - VREF with an 8-bit resolution, a very low output impedance, and low power consumption (<2 mW), as well as operation over a wide temperature range. This makes it an ideal choice for many data acquisition and embedded control applications.

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