AD9741BCPZ

Reference Type:	External, Internal
Base Part Number:	AD9741
Supplier Device Package:	72-LFCSP-VQ (10x10)
Package / Case:	72-VFQFN Exposed Pad, CSP
Operating Temperature:	-40°C ~ 85°C
Architecture:	Quad-Switch
INL/DNL (LSB):	±0.05, ±0.03
Voltage - Supply, Digital:	1.7 V ~ 1.9 V, 3.13 V ~ 3.47 V
Voltage - Supply, Analog:	3.13 V ~ 3.47 V
Series:	--
Data Interface:	Parallel
Differential Output:	Yes
Output Type:	Current - Unbuffered
Settling Time:	--
Number of D/A Converters:	2
Number of Bits:	8
Part Status:	Obsolete
Packaging:	Tray

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Introduction

The AD9741BCPZ is a digital-to-analog converter (DAC) primarily used in data acquisition applications. This device offers a wide range of features including wide voltage range operation, low power consumption, low noise, wide Processing Dynamic Range (PDR) and 16-bit resolution. It is also able to operate over an extended temperature range. The AD9741BCPZ is suitable for use in industrial, consumer, automotive, and medical/healthcare applications.

Application Field

The AD9741BCPZ is suitable for a wide range of applications that require high-resolution analog output. These include Phased Array Antenna System, Automotive Control Systems, Signal Processing, Robotics and Machine Control, Biomedical Devices and Medical Image Processing, Fiber Optic Systems, Automated Test Equipment (ATE), Broadcast Video and Audio Processing, Audio Recording and Playback and Communications Systems.The device is also suitable for applications where multiple outputs are required, such as time-multiplexed DACs.

Working Principle

The AD9741BCPZ utilizes a “pipelined” architecture to achieve its 16-bit resolution. The device is a multi-speed design that operates in two stages. In the first stage, the data is passed through a “multiplication tree” which multiplies the input digital value by the carrier frequency. This creates a “sigma-delta” digital value which is then used to generate the analog output in the second stage through a succession of current sources and resistors.The operation of the device is based on the “successive approximation” method whereby the analog output is derived from a digital representation of the analog input. This digital representation is created by taking the input and dividing it into 16-bit segments. Each segment is then multiplied by a carrier frequency in order to create a “sigma-delta” digital value. This is then used to generate the analog output.The AD9741BCPZ has a low noise floor and wide linearity range which make it suitable for accurate analog output. The device also features a range of features such as integrated thermal protection and power-down mode to further improve performance and reliability.

Conclusion

The AD9741BCPZ is a digital-to-analog converter designed for use in data acquisition applications. The device is suitable for a wide range of applications and offers a range of features including a wide voltage range, low power consumption, wide PDR and 16-bit resolution. Its operation is based on the “successive approximation” method and utilizes a “pipelined” architecture to achieve its 16-bit resolution. The device offers low noise and wide linearity range, as well as integrated thermal protection to improve performance and reliability.

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