Datasheet
3 EVM Operation
3.1 Factory Default Setting
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EVM Operation
Table 1. Parts List (continued)
Item Qty. Value Designators Description Vendor Vendor Part No.
14 1 5V Reference U3 15ppm/ ° C, ± 0.2% Tol Output, SOIC-8, Voltage Texas Instruments REF02AU
Reference
15 1 FET Input U4 8-SOIC(D) High Speed Low Noise Operational Texas Instruments OPA2132UA
Operational Amplifier
Amplifier
16 2 10 × 2 × 0.1 SMT J2A J4A 20-Pin Terminal Strip Samtec TSM-110-01-S-DV-M
17 1 5 × 2 × 0.1 SMT J3A 10-Pin Terminal Strip Samtec TSM-105-01-T-DV
18 2 10 × 2 × 0.1 SMT J2B, J4B 20-Pin Socket Strip
(1)
Samtec SSW-110-22-S-D-VS-P
19 1 5 × 2 × 0.1 SMT J3B 10-Pin Socket Strip
(1)
Samtec SSW-105-22-F-D-VS-K
20 6 2 × 1 × 0.7874 TH JMP1–JMP6 2-Pin Terminal Strip Samtec TSW-102-07-G-S
21 10 3 × 1 × 0.7874 TH JMP7–JMP16 3-Pin Terminal Strip Samtec TSW-103-07-G-S
22 7 1 × 1 × 0.040D TH TP1–TP3, TP5, Testpoint Mini-Loop
(1)
Keystone 5000
TP6, TP7,TP8 Electronics
23 2 1 × 1 × 0.061D TH TP4, TP9 Turret Terminal Pin Mill-Max 2348-2-00-01-00-00-07-0
24 1 N/A N/A Printed Wiring Board Texas Instruments 6496405
25 13 Do Not Populate C8, C9, C14, R5, Do not install these components
(1)
TBD TBD
R6, R17–R23,
R25
26 10 0.100 Shorting N/A Shorting Blocks Samtec SNT-100-BK-G-H
Blocks
27 0 N/A N/A Schematic Diagram Texas Instruments 6496406
28 0 N/A N/A Printed-Circuit Assembly Texas Instruments 6496407
29 0 N/A N/A Kit Assembly Texas Instruments 6496408
(1)
J2B, J3B and J4B parts are not shown in the schematic diagram. All the JxB designated parts are installed in the bottom side of the
PCB opposite the JxA designated counterpart. Example, J2A is installed on the topside while J2B is installed in the bottom side opposite
of J2A. Do NOT install the following: C8 C9 C14 R5 R6 R17 R18 R19 R20 R21 R22 R23 R25.
This section covers in detail the operation of the EVM to provide guidance to the user in evaluating the
onboard DAC and how to interface the EVM to a specific host processor.
See the DAC8564 or the DAC8565 data sheet, (SBAS254 ) or (SBAS411 ), respectively, for information
about its serial interface and other related topics.
The EVM board is factory tested and configured to operate in the unipolar output mode.
The EVM board is set to its default configuration from factory as described on the Table 2 to operate in
unipolar +2.5-V mode of operation. Figure 17 shows the default jumper configuration for the
DAC8564/65EVM.
Table 2. Factory Default Jumper Setting
Reference Jumper Function
JMP1 CLOSE ENABLE pin of the DAC8564/65 is tied to ground. DAC is permanently enabled.
JMP2 CLOSE LDAC pin of the DAC8564/65 is tied to ground. DAC update is controlled by software.
JMP3 CLOSE Address, A1, of DAC8564 is grounded (i.e., A1 = 0).
CLOSE RSTSEL pin of DAC8565 is grounded. DAC outputs reset to minimum scale.
JMP4 CLOSE Address A0 of DAC8564 is grounded (i.e., A0 = 0).
OPEN RST pin of DAC8565 is pulled up to IOV
DD
.
JMP5 OPEN V
REF
H is not routed to the inverting input of the operational amplifier for voltage offset (or for bipolar
mode of operation).
JMP6 OPEN Output operational amplifier, U2, is configured as voltage follower.
JMP7 1-2 Analog supply AV
DD
for the DAC8564/65 is +5 VA.
SLAU252 – June 2008 DAC8564/65 Evaluation Module 17
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