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3 EVM Operation
3.1 Factory Default Setting
EVM Operation
Table 2. Parts List (continued)
Item Qty Value Designators Description Vendor Vendor Part Number
7 1 20 k Ω Trim Pot R9 5T Potentiometer, 4mm SMD, Cermet Bourns 3214W-1-203E
8 10 0 Ω R1 R2 R3 R4 1/4W 1206 Thick Film Chip Resistor, ± 5% Panasonic ERJ-8GEY0R00V
R5 R7 R8 R15 Tol
(1)
R17 R25
9 1 100 Ω R13 1/4W 1206 Thick Film Chip Resistor, ± 5% Tol Panasonic ERJ-8GEYJ101V
10 1 20 k Ω R10 1/4W 1206 Thick Film Chip Resistor, ± 5% Tol Panasonic ERJ-8GEYJ203V
11 1 100 k Ω Trim Pot R11 Potentiometer, 4mm SMD, Cermet Bourns 3214W-1-104E
12 2 10 × 2 × 0.1 SMT J2 J4 20-PIN Terminal Strip Samtec TSM-110-01-S-DV-M
13 1 5 × 2 × 0.1 SMT J6 10-PIN Terminal Strip Samtec TSM-105-01-T-DV
14 2 3 × 1 × 0.138 TH J1 J5 3-Pin Terminal Block
(1)
On-Shore Tech ED555/3DS
15 2 10 × 2 × 0.1 SMT P2 P4 20-PIN Socket Strip
(1)
Samtec SSW-110-22-S-D-VS-P
16 1 5 × 2 × 0.1 SMT P6 10-PIN Socket Strip
(1)
Samtec SSW-105-22-F-D-VS-K
17 7 1 × 1 × 0.061D TH TP1 TP2 TP3 Turret Terminal Pin Mill-Max 2348-2-00-01-00-00-07-0
TP4 TP5 TP6
TP7
18 1 Bipolar Op-Amp U8 8-SOP(D) High Precision Low Noise Op-Amp Texas OPA2227UA
Instruments
19 1 16-Bit String DAC U1 MSOP-8(DGK), 1-CH, SPI, Low Glitch, Texas DAC8550IDGK
Voltage Output DAC
(1)
Instruments
MSOP-8(DGK), 1-CH, SPI, Low Glitch, DAC8551IDGK
Voltage Output DAC
(1)
MSOP-8(DGK), 2-CH, SPI, Low Glitch, DAC8552IDGK
Voltage Output DAC
(1)
20 1 4.096 V Reference U4 4ppm/ ° C, 100 µ A, SOT23-6 VOLTAGE Texas REF3240AIDBV
REFERENCE
(1)
Instruments
21 1 5 V Reference U3 15ppm/ ° C, ± 0.2% Tol Output, SOIC-8, Voltage Texas REF02AU
Reference Instruments
22 1 Bipolar Op-Amp U2 8-SOP(D) High Precision, Low Offset and Texas OPA277UA
Drift, Op-Amp Instruments
23 2 3 × 1 × 0.7874 TH W2 W7 3-PIN Terminal Strip Samtec TMMH-103-01-T-T
24 2 2 × 1 × 0.1 TH W3 W15 Modified 0.025" Square Post Header Samtec MTSW-102-08-T-S-295
25 4 3 × 1 × 0.1 TH W1 W4 W5 Modified 0.025" Square Post Header Samtec MTSW-103-08-T-S-295
W6
26 9 Not Installed C8 C13 R18 Do not install these components To Be To Be Determine
R19 R20 R21 Determined
R22 R23 R24
This section covers in detail the EVM operation to guide the user in evaluating the onboard DAC and how
to interface the EVM to a specific host processor.
See the DAC8550 data sheet (SLAS476 ), DAC8551 data sheet (SLAS429 ), and DAC8552 data sheet
(SLAS430 ) for information about the 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 the factory as described on Table 3 to operate in
unipolar +5-V mode. Figure 10 and Figure 11 show the default jumper configuration as described in the
table for the DAC8550/51 and DAC8552, respectively.
DAC8550/51/52 Evaluation Module10 SLAU172A – December 2005 – Revised September 2006
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