Document
Data Sheet
FEATURES
AD5544: 16-bit resolution INL of ±1 LSB (B Grade)
AD5554: 14-bit resolution INL of ±0.5 LSB (B Grade)
2 mA full-scale current ± 20%, with VREF = ±10 V 0.9 μs settling time to ±0.1% 12 MHz multiplying bandwidth Midscale glitch of −1 nV-sec Midscale or zero-scale reset 4 separate, 4-quadrant multiplying reference inputs SPI-compatible, 3-wire interface Double-buffered registers enable Simultaneous multichannel change Internal power-on reset Temperature range: −40°C to +125°C Compact 28-lead SSOP and 32-lead LFCSP
APPLICATIONS
Automatic test equipment Instrumentation Digitally controlled calibration
GENERAL DESCRIPTION
The AD5544/AD5554 quad, 16-/14-bit, current output, digitalto-analog converters (DACs) are designed to operate from a 2.7 V to 5.5 V supply range.
The applied external reference input voltage (VREFx) determines the full-scale output current. Integrated feedback resistors (RFB) provide temperature-tracking, full-scale voltage outputs when combined with an external I-to-V precision amplifier.
A double-buffered serial data interface offers high speed, 3-wire, SPI- and microcontroller-compatible inputs using serial data in (SDI), a chip select (CS), and clock (CLK) signals. In addition, a serial data out pin (SDO) allows for daisy-chaining when multiple packages are used. A common, level-sensitive, load DAC strobe (LDAC) input allows the simultaneous update of all DAC outputs from previously loaded input registers. Additionally, an internal power-on reset forces the output voltage to 0 at system turn-on. The MSB pin allows system reset assertion (RS) to force all registers to zero code when MSB = 0 or to half-scale code when MSB = 1.
Quad, Current-Output, Serial-Input 16-/14-Bit DACs
AD5544/AD5554
FUNCTIONAL BLOCK DIAGRAM
VREFA VREFB VREFC VREFD
SDO
SDI CS CLK
16-BIT (AD5544)
D0 14-BIT (AD5554)
D1
D2 D3 D4
INPUT REGISTER R
D5
D6
D7
D8
D9
INPUT
D10
REGISTER R
D11
D12
D13
D14
D15 A0 A1
INPUT REGISTER R
EN
DAC A B C D
2:4 DECODE
INPUT REGISTER R
POWER-ON RESET
DAC A REGISTER R
DAC A
DAC B REGISTER R
DAC B
DAC C REGISTER R
DAC C
DAC D REGISTER R
DAC D
AD5544/AD55541
DGND
RS MSB
LDAC
VSS
1AD5544 IS 16-BIT; AD5554 IS 14-BIT
Figure 1.
VDD RFBA IOUTA AGNDA RFBB IOUTB AGNDB RFBC IOUTC AGNDC RFBD IOUTD AGNDD
AGNDF
00943-001
The AD5544 is packaged in the compact 28-lead SSOP and 32-lead LFCSP. The AD5554 is packaged in the compact 28-lead SSOP.
The EV-AD5544/45SDZ is available for evaluating DAC performance. For more information, see the UG-285 evaluation board user guide.
0.7
0.6
0.5
INL ERROR (LSB)
0.4
0.3
0.2
0.1
0
00943-002
–0.1
–0.2 0
10,000 20,000 30,000 40,000 50,000 60,000 70,000 CODE
Figure 2. AD5544 INL vs. Code Plot (TA = 25°C)
Rev. H
Document Feedback
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 ©2000–2015 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
AD5544/AD5554
TABLE OF CONTENTS
Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 4
AD5544 Electrical Characteristics ............................................. 4 AD5554 Electrical Characteristics ............................................. 5 Timing Diagrams.......................................................................... 7 Absolute Maximum Ratings............................................................ 8 ESD Caution.................................................................................. 8 Pin Configurations and Function Descriptions ........................... 9 Typical Performance Characteristics ........................................... 11 Theory of Operation ...................................................................... 14
REVISION HISTORY
9/15—Rev. G to Rev. H Changed NC to DNC .................................................... Throughout Changes to Figure 1 ......................................................................