EVAL-AD5425EBZ datasheet, PDF - EEWORLD Datasheet

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EVAL-AD5425EBZ: DescriptionEVAL BOARD FOR AD5425; CategoryDevelopment board/suite/development tools; File Size495KB，24 Pages; ManufacturerADI; Websitehttps://www.analog.com; Environmental Compliance

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EVAL-AD5425EBZ Overview

EVAL BOARD FOR AD5425

EVAL-AD5425EBZ Parametric

Parameter Name	Attribute value
Number of DACs	1
Number of digits	8
Sample rate (per second)	2.47M
Data interface	serial
Setup time	15ns
DAC type	current
What's included	plate
IC/parts used	AD5425

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Data Sheet

FEATURES

2.5 V to 5.5 V supply operation

50 MHz serial interface

2.47 MSPS update rate

INL of ±0.25 LSB

10 MHz multiplying bandwidth

±10 V reference input

Low glitch energy: <2 nV-s

Extended temperature range: −40°C to +125°C

10-lead MSOP package

Guaranteed monotonic

4-quadrant multiplication

Power-on reset with brownout detection

LDAC function

0.4 µA typical power consumption

8-Bit, High Bandwidth

Multiplying DAC with Serial Interface

AD5425

GENERAL DESCRIPTION

The

AD5425

is a CMOS, 8-bit, current output digital-to-analog

converter (DAC) that operates from a 2.5 V to 5.5 V power supply,

making it suitable for battery-powered applications and many

other applications.

This DAC utilizes a double buffered, 3-wire serial interface that

is compatible with SPI®, QSPI™, MICROWIRE™, and most DSP

interface standards. An LDAC pin is also provided, which

allows simultaneous updates in a multiDAC configuration. On

power-up, the internal shift register and latches are filled with

0s and the DAC outputs are 0 V.

As a result of manufacturing on a CMOS submicron process,

this DAC offers excellent 4-quadrant multiplication charac-

teristics with large signal multiplying bandwidths of 10 MHz.

The applied external reference input voltage (V

REF

) determines

the full-scale output current. An integrated feedback resistor,

, provides temperature tracking and full-scale voltage output

when combined with an external I to V precision amplifier.

The

AD5425

is available in a small, 10-lead MSOP package.

APPLICATIONS

Portable battery-powered applications

Waveform generators

Analog processing

Instrumentation applications

Programmable amplifiers and attenuators

Digitally controlled calibration

Programmable filters and oscillators

Composite video

Ultrasound

Gain, offset, and voltage trimming

REF

FUNCTIONAL BLOCK DIAGRAM

AD5425

8-BIT

R-2R DAC

OUT

LDAC

POWER-ON

RESET

DAC REGISTER

INPUT LATCH

SYNC

SCLK

SDIN

CONTROL LOGIC AND

INPUT SHIFT REGISTER

03161-001

GND

Figure 1.

U.S. Patent No. 5,969,657.

Rev. D

Document Feedback

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Technical Support

www.analog.com

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

AD5425

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications ....................................................................................... 1

General Description ......................................................................... 1

Functional Block Diagram .............................................................. 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Timing Characteristics ..................................................................... 5

Absolute Maximum Ratings ............................................................ 6

ESD Caution .................................................................................. 6

Pin Configuration and Function Descriptions ............................. 7

Typical Performance Characteristics ............................................. 8

Terminology .................................................................................... 13

Theory of Operation ...................................................................... 14

Data Sheet

Circuit Operation ....................................................................... 14

Single-Supply Applications ....................................................... 15

Adding Gain ................................................................................ 16

DACs Used as a Divider or Programmable Gain Element ... 16

Reference Selection .................................................................... 16

Amplifier Selection .................................................................... 17

Serial Interface ............................................................................ 19

Microprocessor Interfacing ....................................................... 19

PCB Layout and Power Supply Decoupling................................ 22

Outline Dimensions ....................................................................... 23

Ordering Guide .......................................................................... 23

REVISION HISTORY

1/16—Rev. C to Rev. D

Deleted Positive Output Voltage Section ........................................ 16

Changes to Adding Gain Section .................................................... 16

Changes to ADSP-21xx to AD5425 Interface Section

and Figure 39 .................................................................................... 19

Changes to ADSP-BF504 to ADSP-BF592 Device Family to

AD5425 Interface Section, MC68HC11 Interface to AD5425

Interface Section, and Figure 40 and Figure 41 Captions ......... 20

Changes to PIC16C6x/PIC16C7x to AD5425 Section .............. 21

9/12—Rev. B to Rev. C

Change to Features ........................................................................... 1

6/12—Rev. A to Rev. B

Deleted ADSP-2103 and changed ADSP-2191 to

ADSP-2191M Throughout ............................................................ 19

Deleted Evaluation Board Section and Operating the Evaluation

Board Section, deleted Figure 46 to Figure 49, and deleted

Table 11 ............................................................................................ 23

Changes to Ordering Guide .......................................................... 23

3/05—Rev. 0 to Rev. A

Updated Format .................................................................. Universal

Changes to Specifications Section ...................................................3

Added Figure 18, Figure 20, Figure 21 ........................................ 10

Change to Table 7 ........................................................................... 18

2/04—Revision 0: Initial Version

Rev. D | Page 2 of 24

EVAL-AD5425EBZ Related Products

	EVAL-AD5425EBZ	AD5425
Description	EVAL BOARD FOR AD5425	SERIAL INPUT LOADING, 0.09 us SETTLING TIME, 8-BIT DAC, PDSO10

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