AD5626 nanoDAC Datasheet

AD5626 Datasheet PDF, Equivalent


Part Number

AD5626

Description

12-Bit nanoDAC

Manufacture

Analog Devices

Total Page 20 Pages
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Download AD5626 Datasheet PDF


AD5626
FEATURES
8-lead MSOP and 8-lead LFCSP packages
Complete voltage output with internal reference
1 mV/bit with 4.095 V full scale
5 V single-supply operation
No external components required
3-wire serial interface, 20 MHz data loading rate
www.DataSheeLt4oUw.cpoomwer: 2.5 mW
APPLICATIONS
Portable instrumentation
Digitally controlled calibration
Servo controls
Process control equipment
PC peripherals
5 V, 12-Bit nanoDAC, Serial Interface
in MSOP and LFCSP Packages
AD5626
GENERAL DESCRIPTION
The AD5626, a member of the nanoDAC® family, is a complete
serial input, 12-bit, voltage output digital-to-analog converter
(DAC) designed to operate from a single 5 V supply. It contains
the DAC, input shift register and latches, reference, and a rail-
to-rail output amplifier. The AD5626 monolithic DAC offers
the user low cost and ease of use in 5 V only systems.
Coding for the AD5626 is natural binary with the MSB loaded
first. The output op amp can swing to either rail and is set to a
range of 0 V to 4.095 V for a one-millivolt-per-bit resolution. It
is capable of sinking and sourcing 5 mA. An on-chip reference
is laser trimmed to provide an accurate full-scale output voltage
of 4.095 V.
This part features a serial interface that is high speed, three-
wire, DSP compatible with data in (SDIN), clock (SCLK), and
load strobe (LDAC). There is also a chip-select pin for
connecting multiple DACs.
The CLR input sets the output to zero scale at power on or upon
user demand.
The AD5626 is specified over the extended industrial tempera-
ture range (–40°C to +85°C). The AD5626 is available in MSOP
and LFCSP surface-mount packages.
FUNCTIONAL BLOCK DIAGRAM
VDD
AD5626
REF
LDAC
CLR
DAC REGISTER
12-BIT DAC
OUTPUT
BUFFER
VOUT
INPUT
REGISTER
CS SCLK SDIN
GND
Figure 1.
Rev. 0
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2007 Analog Devices, Inc. All rights reserved.

AD5626
AD5626
TABLE OF CONTENTS
Features .............................................................................................. 1 
Applications....................................................................................... 1 
General Description ......................................................................... 1 
Functional Block Diagram .............................................................. 1 
Revision History ............................................................................... 2 
Specifications..................................................................................... 3 
Electrical Characteristics............................................................. 3 
Timing Characteristics ................................................................ 4 
www.DataAShbesoeltu4Ute.cMomaximum Ratings............................................................ 5 
ESD Caution.................................................................................. 5 
Pin Configurations and Function Descriptions ........................... 6 
Typical Performance Characteristics ............................................. 7 
Theory of Operation ...................................................................... 10 
DAC Section................................................................................ 10 
Amplifier Section........................................................................ 10 
REVISION HISTORY
12/07—Revision 0: Initial Version
Output Section............................................................................ 10 
Power Supply............................................................................... 10 
Timing and Control ................................................................... 11 
Applications Information.............................................................. 12 
Power Supplies, Bypassing, and Grounding ........................... 12 
Unipolar Output Operation...................................................... 12 
Operating the AD5626 on 12 V or 15 V Supplies Only........ 13 
Measuring Offset Error ............................................................. 13 
Bipolar Output Operation......................................................... 13 
Generating a Negative Supply Voltage .................................... 15 
A Single-Supply, Programmable Current Source................... 15 
Galvanically-Isolated Interface................................................. 15 
Microprocessor Interfacing....................................................... 16 
Outline Dimensions ....................................................................... 17 
Ordering Guide .......................................................................... 17 
Rev. 0 | Page 2 of 20


Features 5 V, 12-Bit nanoDAC, Serial Interface in MSOP and LFCSP Packages AD5626 FEATURE S 8-lead MSOP and 8-lead LFCSP packages Complete voltage output with internal reference 1 mV/bit with 4.095 V full sc ale 5 V single-supply operation No exte rnal components required 3-wire serial interface, 20 MHz data loading rate Low power: 2.5 mW www.DataSheet4U.com GEN ERAL DESCRIPTION The AD5626, a member o f the nanoDAC® family, is a complete s erial input, 12-bit, voltage output dig ital-to-analog converter (DAC) designed to operate from a single 5 V supply. I t contains the DAC, input shift registe r and latches, reference, and a railto- rail output amplifier. The AD5626 monol ithic DAC offers the user low cost and ease of use in 5 V only systems. Coding for the AD5626 is natural binary with the MSB loaded first. The output op amp can swing to either rail and is set to a range of 0 V to 4.095 V for a one-mi llivolt-per-bit resolution. It is capab le of sinking and sourcing 5 mA. An on-chip reference is laser t.
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