AD9054ABSTZ-135

Number of A/D Converters:	1
Base Part Number:	AD9054
Supplier Device Package:	44-LQFP (10x10)
Package / Case:	44-LQFP
Operating Temperature:	-40°C ~ 85°C
Features:	--
Voltage - Supply, Digital:	5V
Voltage - Supply, Analog:	5V
Reference Type:	Internal
Architecture:	Pipelined
Series:	--
Ratio - S/H:ADC:	1:1
Configuration:	S/H-ADC
Data Interface:	Parallel
Input Type:	Differential, Single Ended
Number of Inputs:	1
Sampling Rate (Per Second):	200M
Number of Bits:	8
Part Status:	Obsolete
Packaging:	Tray

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Introduction

Data Acquisition is a process of digitizing signals from its analog sources into numeric representations for further computations. Analog to Digital Converters (ADC) is one of the most important components in data acquisition systems. It converts analog signals into corresponding digital representation within certain accuracy range or precision. AD9054ABSTZ-135 is a new high speed, high resolution, ultra low power mixed-signal integrated chip performing the functions of an ADC. This article will mainly focus on its application field and also its working principle.

Application Field

AD9054ABSTZ-135 is an ideal device for data acquisition applications in automation, automotive, consumer, industrial and medical markets due to its innovative analog current and voltage sensing technology. It is designed for high speed and low power performance. Its low voltage operation of 1.7V – 3.6V allows it to consume very little power that can be used in portable applications. It is also highly flexible and configurable, providing wide range of resolutions from 8 – 16 bits and-3dB frequency up to 2.5MHz. Among others, its wide range of applications include battery operated medical safety critical systems, automotive instrumentation, process control, communications and industrial automation. In medical safety critical systems, it was found that AD9054ABSTZ-135 had superior accuracy, linearity and noise performance which provides consistent and reliable readings which is essential in medical care. In automotive instrumentation, it has been used to measure various automotive parameters like pressure, temperature as well as accelerometer. Other applications include in industrial process control and data acquisition, it was found to provide consistent measurements with wide temperature range of -40°C to +125°C and high power supply noise rejection ability. The versatile features of AD9054ABSTZ-135 make it an ideal choice in all data acquisition related applications.

Working Principle

The AD9054ABSTZ-135 is a parallel, rail-to-rail, 8-bit/16-bit integrated, low power CMOS A/D converter that combines high speed performance and low power operation, with programmable high-speed sample/hold (S/H) and signal conditioning functions. The device has an integrated voltage reference that operates from a 1.7V to 3.1V supply and has an input signal common-mode range from 1.1V to Vref.The AD9054ABSTZ-135 samples input signals, which may include current or voltage, through a sample and hold circuit. It uses TDEM (Time Delay and Execute Mode) architecture which includes an internal voltage reference and user-programmable gain settings. Based on the user-programmed parameters, the gain management and TDEM architecture enables the device to reduce the artifacts, along with the current and voltage noise present in the input analog signal.The data acquisition process is done inside an on-chip SAR (successive approximation register) ADC that provides digital output data in either 8-bit/16-bit resolution. This data is further processed by a digital processor and is used for computing purposes.

Conclusion

AD9054ABSTZ-135 is a high speed, high resolution, ultra low power mixed-signal integrated chip performing the functions of an ADC. It is widely used in various data acquisition applications due to its high speed, configurability and low power features. Its working principle includes sample and hold and signal conditioning functions, followed by a Successive Approximation Register (SAR) ADC to provide digital output data. Therefore, AD9054ABSTZ-135 is an ideal choice for data acquisition applications in various fields such as medical safety systems, automotive instrumentation and industrial process control.

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