Analog Devices AD5380 Evaluation Board EVAL-AD5380EBZ EVAL-AD5380EBZ Data Sheet

Product codes
EVAL-AD5380EBZ
Page of 12
 
Evaluation Board for 32-/40-Channel, 12-/14-Bit,
Parallel and Serial Input, Voltage-Output DACs
 
 
EVAL-AD5380/81/82/83EB
 
 
 
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
 
Fax: 781.326.8703
© 2004 Analog Devices, Inc. All rights reserved. 
FEATURES 
Full-featured evaluation board 
On-board reference 
On-board ADC for MON_OUT voltage readback 
Link options 
Direct hook-up to printer port of PC 
PC software for control of DACs 
 
INTRODUCTION 
This evaluation board is for the AD5380, AD5381, AD5382, and 
AD5383, 32-/40-channel, 12-/14-bit DACs. The AD538x parts 
contain 32/40, 12-/14-bit DACs in one package. They have a 
maximum output voltage span of 5 V derived from a reference 
voltage of 2.5 V. 
The AD538x parts have a parallel interface in which 12/14 data 
bits are loaded into one of the input registers under the control 
of the WR, CS, and DAC channel address pins, A0 to A5. They 
also have a 2-wire I
2
C interface and a 3-wire serial interface, 
which are compatible with SPI®, QSPI™, MICROWIRE™, and 
DSP interface standards. 
The DAC outputs are updated when the DAC registers receive 
new data. All the outputs can be updated simultaneously by 
taking the LDAC input low.  
Each channel has a programmable gain and offset adjust 
register. Each DAC output is gained and buffered on-chip. 
See the AD5380, AD5381, AD5382, and AD5383 data sheets for 
product details. 
AD538x EVALUATION BOARD POWER SUPPLIES 
The following external supplies must be provided:  
•  5 V between the DV
CC
 and DGND inputs for the digital 
supply of the AD538x.  
•  5 V between the AV
CC
 and AGND inputs for the analog 
supply of the AD538x. 
Both AGND and DGND inputs are provided on the board. The 
AGND and DGND planes are connected at one location close 
to the AD538x. Avoid connecting AGND and DGND elsewhere 
in the system to avoid ground loop problems. 
Each supply is decoupled to the relevant ground plane with 
47 µF and 0.1 µF capacitors. Each device supply pin is again 
decoupled with a 10 µF and 0.1 µF capacitor pair to the relevant 
ground plane. 
 
FUNCTIONAL BLOCK DIAGRAM 
POWER SUPPLY INPUTS
2.5V REFERENCE
V
REF (+)
V
OUT
0
V
OUT
39
AD5380
40-CHANNEL
DAC
ADC
V0
V39/MON_OUT
PARALLEL INTERFACE
28-PIN HEADER
SERIAL INTERFACE
7-PIN HEADER
SERI
A
L I
N
TERFACE
36-PI
N CONNECTOR
04934-0-001
 
Figure 1.