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Analog Devices Semiconductor Electronic Components Datasheet

AD5405 Datasheet

Dual 12-Bit/ High Bandwidth/ Multiplying DAC with 4-Quadrant Resistors and Parallel Interface

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AD5405 pdf
Dual 12-Bit, High Bandwidth, Multiplying DAC with
4-Quadrant Resistors and Parallel Interface
FEATURES
On chip 4-quadrant resistors allow flexible output ranges
10 MHz multiplying bandwidth
Fast parallel interface write cycle: 58 MSPS
2.5 V to 5.5 V supply operation
±10 V reference input
Extended temperature range: 40°C to 125°C
40-lead LFCSP package
Guaranteed monotonic
4-quadrant multiplication
Power-on reset
Readback function
.5 µA typical current consumption
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
AD5405
GENERAL DESCRIPTION
The AD54051 is a dual CMOS, 12-bit, current output digital-
to-analog converter (DAC).This device operates from a 2.5 V to
5.5 V power supply, making it suited to battery-powered and
other applications.
The applied external reference input voltage (VREF) determines
the full-scale output current. An integrated feedback resistor
(RFB) provides temperature tracking and full-scale voltage
output when combined with an external I-to-V precision
amplifier. This device also contains all the 4-quadrant resistors
necessary for bipolar operation and other configuration modes.
This DAC utilizes data readback, allowing the user to read the
contents of the DAC register via the DB pins. On power-up, the
internal register and latches are filled with zeros and the DAC
outputs are at zero scale.
As a result of manufacture with a CMOS submicron process, the
device offers excellent 4-quadrant multiplication characteristics,
with large signal multiplying bandwidths of up to 10 MHz.
The AD5405 has a 6 mm × 6 mm, 40-lead LFCSP package.
1 US Patent Number 5,689,257.
VDD
DATA
INPUTS
DB0
DB11
AD5405
R3A R2_3A R2A
R3 R2
2R 2R
VREFA R1A
R1
2R
RFB
2R
INPUT
BUFFER
LATCH
12-BIT
R-2R DAC A
RFBA
IOUT1A
IOUT2A
DAC A/B
CS
R/W
LDAC
GND
CONTROL
LOGIC
LATCH
12-BIT
R-2R DAC B
POWER-ON
RESET
R3 R2
2R 2R
R1
2R
R3B R2_3B R2B VREFB R1B
RFB
2R
Figure 1. AD5405 Functional Block Diagram
IOUT1B
IOUT2B
RFB B
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. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.


Analog Devices Semiconductor Electronic Components Datasheet

AD5405 Datasheet

Dual 12-Bit/ High Bandwidth/ Multiplying DAC with 4-Quadrant Resistors and Parallel Interface

No Preview Available !

AD5405 pdf
AD5405
TABLE OF CONTENTS
Specifications..................................................................................... 3
Timing Characteristics..................................................................... 5
Absolute Maximum Ratings............................................................ 6
ESD Caution.................................................................................. 6
Pin Configuration and Function Descriptions............................. 7
Typical Performance Characteristics ............................................. 8
Terminology .................................................................................... 13
General Description ....................................................................... 14
DAC Section................................................................................ 14
Circuit Operation ....................................................................... 14
Single-Supply Applications........................................................ 15
Positive Output Voltage ............................................................. 15
REVISION HISTORY
7/04—Revision 0: Initial Version
Adding Gain................................................................................ 15
Used as a Divider or Programmable Gain Element............... 16
Reference Selection .................................................................... 16
Amplifier Selection .................................................................... 16
Parallel Interface......................................................................... 17
Microprocessor Interfacing....................................................... 17
PCB Layout and Power Supply Decoupling ........................... 17
Evaluation Board for the DACs................................................ 18
Overview of AD54xx Devices....................................................... 22
Outline Dimensions ....................................................................... 23
Ordering Guide .......................................................................... 23
Rev. 0 | Page 2 of 24


Part Number AD5405
Description Dual 12-Bit/ High Bandwidth/ Multiplying DAC with 4-Quadrant Resistors and Parallel Interface
Maker Analog Devices
Total Page 24 Pages
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