ETC DEM-ADS7810

®
DEM-ADS7810/19C
EVALUATION FIXTURE
FEATURES
DESCRIPTION
● 800kHz 12-BIT ADS7810P AND ADS7819P
INCLUDED
The DEM-ADS7810/19C Evaluation Fixture is a fully
assembled printed circuit board used to evaluate
ADS7810P and ADS7819P. This device incorporates
an analog input amplifier (with provisions to bypass
this amplifier), a parallel digital output buffer, a crystal oscillator-based 800kHz convert command generator, external R/C and CS connectors, and a 2.3" x 1.2"
breadboard area. The DEM-ADS7810/19C achieves
full converter performance on a two-layer board.
● 12-BIT BUFFERED PARALLEL OUTPUT
● CONNECTOR FOR ALL DIGITAL I/O PINS
● CRYSTAL OSCILLATOR BASED 800kHz
CONVERT COMMAND GENERATOR
● EXTERNAL R/C AND CS CONNECTORS
● PROTOTYPE AREA
This fixture requires only ±5V power supplies. An
optional bipolar power supply connector is
provided for the input amplifier and breadboarding.
APPLICATIONS
● EVALUATE ADS7810P AND ADS7819P
PERFORMANCE
● BREADBOARD COMPLETE ANALOG
SYSTEM
● EVALUATE SIMPLE TWO-LAYER PCB
LAYOUT
● INCOMING INSPECTION TEST FIXTURE
International Airport Industrial Park • Mailing Address: PO Box 11400
Tel: (602) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP •
© 1993 Burr-Brown Corporation
• Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706
Telex: 066-6491 • FAX: (602) 889-1510 • Immediate Product Info: (800) 548-6132
LI-454
Printed in U.S.A. December, 1993
TABLE OF CONTENTS
How to Use This Manual ........................................................................................................................... 2
PCB Legend ............................................................................................................................................... 3
Factory Settings ...................................................................................................................................... 3-5
Step-by-Step Basic Operations .................................................................................................................. 6
Device ................................................................................................................................................ 6
Input Amplifier .................................................................................................................................. 6
Offset/Gain Adjust ............................................................................................................................. 6
Convert Command Generator ............................................................................................................ 6
Output Format.................................................................................................................................... 7
Power Supplies .................................................................................................................................. 7
Wiring Diagram ......................................................................................................................................... 8
Pin-Out for Output Connectors.................................................................................................................. 9
PCB Component Side ................................................................................................................................ 9
PCB Solder Side ...................................................................................................................................... 10
Installed Component List......................................................................................................................... 11
Packing List ............................................................................................................................................. 11
HOW TO USE THIS MANUAL
A table and diagrams are included in the “Factory Settings”
section showing how the board is configured from the
factory. A listing of other components, which are shipped
with the board, is also included.
The Step-by-Step Basic Operations section describes all of
the options. At the end of each step, a figure illustrates
factory settings. Items installed are highlighted in those
figures.
For further details on the OPA671, ADS7810P, ADS7819P,
or any other device on the DEM-ADS7810/19C, refer to the
specific product data sheet.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user's own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
®
DEM-ADS7810/19
2
GND
FIGURE 1. PCB Legend.
FACTORY SETTINGS
With ±5V supplies connected to P2, the DEM-ADS7810/
19C starts converting at 800kHz with an input range of
±10V(ADS7810P) or ±2.5V (ADS7819P). Data can be read
in full parallel from P5. Buffered full parallel can be read
from P6. The following is a listing of “factory settings”.
MAKE SELECTION
FOR EACH STEP (1)
FACTORY SETTINGS
1. Device
ADS7810P installed.
ADS7819P included for installation.
2. Input Amplifier
OPA671 bypassed.
Switching jumpers on J1 and J2 to “B” selects input amplifier. Apply ±15V to P1.
3. Offset Adjust
Trim circuit not installed.
Trim circuit resistors and potentiometers included for
installation. See Step-by-Step Basic Operations, step 3.
Gain Adjust
Trim circuit not installed.
Trim circuit resistors and potentiometers included for
installation. See Step-by-Step Basic Operations, step 3.
On-board 800kHz convert command
generator connected to R/C. CS tied
LOW on P5 with a jumper.
A combination of R/C and CS can be used to control the conversions via P4
and P6. Refer to the product datasheets for timing diagrams and limits.
4. Convert Command
OPTIONS (requires alteration of the demo board, all needed
components included).
5. Output Format
12-bit buffered full parallel output.
Full parallel output (P5).
6. Power Supplies
3-pin power block (P2) ready for ±5V.
3-pin power block (P1) ready for ±15V (for use with breadboard
and optional input amplifier).
NOTE: (1) Each of these steps is explained in detail in the Step-by-Step Basic Operations section.
TABLE I. Quick Reference to Factory Settings and Other Options.
®
3
DEM-ADS7810/19
FACTORY SETTINGS (CONT)
Installed
Comments
P1
Yes
3-Pin Power Block
P2
Yes
3-Pin Power Block
P3
Yes
PCB Mount BNC Connector
P4
Yes
PCB Mount BNC Connector
P5
Yes
20 X 2 Header
P6
Yes
PCB Mount BNC Connector
P7
Yes
20 X 2 Shrouded Header
U1
Yes
28-Pin Socket for ADS7810P
or ADS7819P
U2
Yes
8-Pin Socket for OPA671
J1, J3, J5
Yes
3 x 1 Headers
J4
No
Refer to Step-by-Step
Basic Operations,
Step 4B.
–V GND
+V
BURR-BROWN CORP.
ADS7810/19
EVALUATION BOARD
P1
OPTIONAL
POWER
+5 GND +5
P2
POWER
PIN 1
P4
P3
ANALOG
INPUT
P5
B
A
A
U2
J1
EXTERNAL
CS
+5
+5
GND
–5
–5
BUSY
CS
R/C
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
B
J2
DIGITAL I/O
GND
Hardware
U1
J3
EXT
INT
R/C
SELECT
J5
EXTERNAL
R/C
FROM P5
EXT
CS
SELECT
P6
2
P6
40
1
PARALLEL OUTPUT
39
FIGURE 2. Hardware Installed.
Jumpers for:
J1, J2
Setting
“A”
“INT”
J5
“From P5”
P5
Pin 27 to 28
BURR-BROWN CORP.
ADS7810/19
EVALUATION BOARD
Crystal On-Board Convert Command Generator Selected (Outputs
800kHz to R/C)
B
B
CS Controlled by Pin 27 of P5
A
A
P5
J1
CS Tied LOW
J2
DIGITAL I/O
GND
J3
Comments
U2 (Input Amplifier Socket)
bypassed
J3
EXT
+5
+5
GND
–5
–5
BUSY
CS
R/C
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
INT
R/C
SELECT
J5
FROM P5
EXT
CS
SELECT
FIGURE 3. Jumpers Installed.
®
DEM-ADS7810/19
4
FACTORY SETTINGS (CONT)
ICs
Installed
Comments
BURR-BROWN CORP.
ADS7810/19
EVALUATION BOARD
ADS7819P
No
Included in Package
ADS7810P
Yes
Plugged into 28-Pin
OPA671
Yes
Plugged into 8-Pin Socket
(U2)
U3
Yes
4-Bit Decade Counter
U4
Yes
Hex Schmitt Inverters
U5, U6
Yes
8-Bit Latch
U7
Yes
8.000MHz Crystal Oscillator
Socket (U1)
U2
U1
U3
U5
U6
U4
U7
FIGURE 4. ICs Installed.
Installed
Comments
R1
No
4.99kΩ 1/4W 1%(1)
R3
No
221kΩ 1/4W 1%(1)
R4
No
49.9 Ω 1/4W 1%(1)
R2, R8, R9
Yes
49.9 Ω 1/4W 1%
R5, R6, R7
Yes
1kΩ 1/4W 1%
BURR-BROWN CORP.
ADS7810/19
EVALUATION BOARD
–R7–
–R5–
–R6–
C6
C7
Resistors
C2
–R2–
( )
( )
–R8–
C8
C9
C1
RV1, RV2
Capacitors
Installed
Comments
( )
Pots
C10
C11
(1)
No
5kΩ 1/4" 1%
Installed
Comments
C1, C2, C6,C8,
C10, C12-C16
Yes
0.1µF (50V ceramic)
C4, C5, C7, C9, C11
Yes
10µF (10V Tantalum)
C12
–R9–
NOTE: (1) Included in Package.
C13
C15
C16
C14
FIGURE 5. Resistors and Capacitors Installed.
®
5
DEM-ADS7810/19
STEP-BY-STEP
BASIC OPERATIONS
Step 3 — Offset/Gain Adjust
Offset Adjust
A) To adjust offset, install RV2 (5kΩ) and R1 (4.99kΩ),
ground the input, then adjust RV2. See Figure 8 for
location of RV2 and R1.
STEP 1 — ADS7810P OR ADS7819P
A) To test the ADS7810P, install an ADS7810P in U1.
B) To test the ADS7819P, install an ADS7819P in U1.
Gain Adjust
NOTE: The ADS7810P has an input range of ±10V. The
ADS7819P has an input range or ±2.5V. No alteration of the
board is necessary when switching from one to the other.
B) To adjust gain, install RV1 (5kΩ) and R3 (221kΩ), then
adjust RV1. Do this for +full scale and –full scale. See
Figure 8.
®
C10
C11
U3
INT
R/C
SELECT
C12
U5
–R9–
EXTERNAL
R/C
U6
–V GND +V
J5
P3
FROM P5
OPTIONAL
POWER
–R7–
U4
EXT
C13
U7
P6
C15
ANALOG
INPUT
A4
CS
SELECT
C16
2
P7
40
1
PARALLEL OUTPUT
39
–R1–
–R2–
C2
–R3–
B
C1
GA
A
A
U2
J1
J2
+5
EXTERNAL
+5
CS
GND
–R8–
–5
–5
BUSY
CS
R/C
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
( )
( )
C10
C11
( )
J4
P4
P5
( )
( )
RV1
P2
POWER
PIN 1
RV2
oA
–R5–
–R6–
B
–5 GND +5
BURR-BROWN COR.
ADS7810/19
EVALUATION BOARD
P1
C6
C7
U1
J3
EXT
C4
DIGITAL I/O
GND
( )
C10
C11
C8
C9
C4
+5
EXTERNAL
+5
CS
GND
–R8–
–5
–5
BUSY
CS
R/C
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
( )
C5
( )
( )
C7
( )
RV1
Factory Setting: ±10V input range without offset/gain trim,
R2 soldered to the board.
P4
C6
C7
–R3–
GA
A
J2
C6
B
U2
J1
C9
C2
C1
A
P2
P5
C8
C9
B
–R1–
–R2–
C4
oA
–R5–
–R6–
NOTE: The offset directly affects the gain. Always trim
offset first. For maximum precision, more than one iteration
of these adjustments may be required.
POWER
PIN 1
RV2
C5
ANALOG
INPUT
A4
–5 GND +5
BURR-BROWN COR.
ADS7810/19
EVALUATION BOARD
OPTIONAL
POWER
–R7–
C5
–V GND +V
P1
P3
C8
Factory Setting: C4-C11 and 28-pin socket soldered to the
board. ADS7810P plugged into U1.
U1
DIGITAL I/O
GND
C14
U1
®
J3
FIGURE 6. Factory Settings For Step 1.
EXT
INT
R/C
SELECT
Step 2 — On-Board Input Amplifier
OA
C12
U5
U6
FROM P5
C13
U7
C15
C16
R3
J5
U4
P6
R1
R2
GA
U3
–R9–
EXTERNAL
R/C
RV2
EXT
CS
SELECT
2
P7
40
1
PARALLEL OUTPUT
39
RV1
J4
C14
To use the on-board input amplifier, jumpers J1 and J2 must
be set to the “B” position, and P1 (Optional Power) must be
supplied with ±15V. The factory setting of the amplifier
yields an inverting gain of 2. Combinations of resistors R5,
R6, and R7 will affect the gain of the amplifier as follows:
FIGURE 8. Factory Settings for Step 3.
Step 4 — Convert Command Generator
GAIN = – (R7)/(R5 || R6)
A) J3 set to “INT” selects the on-board convert command
generator operating at 800kHz (divided down from 8MHz
by U3).
NOTE: The on-board input amplifier may improve the
quality of the signal reaching the ADS7810P or ADS7819P.
This depends on the output characteristics of the signal
generator.
B) J3 set to “EXT” selects an external convert command
generator. Apply a negative-going pulse, 100ns in duration, to P6 (External Convert Command). This connector
is terminated on the board with a 50Ω resistor (R8).
Adjust the voltage of the generator for a 0V to 5V swing
and the pulse rate to the desired frequency (≤800kHz).
NOTE: When using an external convert command, the
trace powering the on-board convert command generator
can be cut to eliminate any noise contributions due to the
oscillator. To reconnect, install a jumper at J4.
Factory Setting: J1 and J2 set to “A”, bypassing the
amplifier, R5, R6, R7, C1, C2 and 8-pin socket (U2) soldered to the board. OPA671 plugged into U2.
–V GND +V
B
C2
B
C1
GA
A
A
U2
J1
( )
+V
P4
C6
C7
–R3–
C10
C11
DIGITAL I/O
GND
U1
P1
+5
EXTERNAL
+5
CS
GND
–R8–
–5
–5
BUSY
CS
R/C
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
( )
( )
RV1
–V GND
P2
P5
( )
( )
J2
–R1–
–R2–
C4
oA
–R5–
–R6–
POWER
PIN 1
RV2
C8
C9
OPTIONAL
POWER
–R7–
C5
ANALOG
INPUT
A4
–5 GND +5
BURR-BROWN COR.
ADS7810/19
EVALUATION BOARD
P1
P3
®
J3
OPTIONAL
POWER
C) J3 and J5 set to “EXT” allows the user to control the
“read” and “convert” commands via P4 (CS) and P6
(R/C). Refer to the product data sheets for timing
diagrams and limits.
R7
EXT
U3
R5
R6
INT
R/C
SELECT
C12
–R9–
EXTERNAL
R/C
U5
U6
J5
FROM P5
U4
EXT
P6
C13
U7
C15
2
C16
P7
CS
SELECT
B
A
C14
1
PARALLEL OUTPUT
B
C1
40
J4
C2
J1
Factory Setting: J5 set to “From P5”, J3 set to “INT”,
conversions synchronized to on-board convert command
generator at 800kHz. P4, P6, R8, R9, U3, U7, C12 and C14
soldered to the board.
A
U2
39
J2
FIGURE 7. Factory Settings for Step 2.
®
DEM-ADS7810/19
6
–V GND +V
C2
B
GA
A
U2
J1
–R3–
( )
C6
C7
–R1–
–R2–
P5
( )
+5
EXTERNAL
+5
CS
GND
–R8–
–5
–5
BUSY
CS
R/C
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
( )
( )
RV1
C10
C11
DIGITAL I/O
GND
( )
J2
P4
C8
C9
C1
A
C4
oA
–R5–
–R6–
B
P2
POWER
PIN 1
RV2
C5
ANALOG
INPUT
A4
OPTIONAL
POWER
–R7–
P4
–5 GND +5
BURR-BROWN COR.
ADS7810/19
EVALUATION BOARD
P1
P3
U1
®
J3
EXTERNAL
CS
R8
EXT
U3
INT
R/C
SELECT
C12
–R9–
EXTERNAL
R/C
EXT
U5
U6
U3
J5
FROM P5
U4
P6
C13
U7
C15
C16
EXT
CS
SELECT
2
P7
40
1
PARALLEL OUTPUT
39
J4
INT
C12
C14
R/C
SELECT
J5
FROM P5
U7
R9
EXTERNAL
R/C
EXT
J4
CS
SELECT
C14
P6
FIGURE 9. Factory Settings for Step 4.
Step 5 — Parallel Output
Step 6 — Power Supplies
A) P5 outputs full parallel data — See Figure 10.
A) ±5V power supplies connected to P2 (Power) is all that is
required to operate the DEM-ADS7810/19C.
B) P6 outputs buffered full parallel data—See Figure 10.
B) If the optional amplifier is used, P1 must be supplied with
power (OPA671 requires at least ±15V for this application).
A rising edge pulse will be output on pin 33 (Data Valid)
of P6 signifying the end of a conversion and that data is
valid. Data will be from the most recently completed
conversion.
Factory Setting: P1 and P2 ready to be connected to the
appropriate power supplies.
Factory Setting: P5, P6, U4, U5, U6, C13, C15 and C16
soldered to the board. Buffered full parallel output on P6.
–V GND
C2
B
C1
GA
A
A
U2
J1
P5
( )
+5
EXTERNAL
+5
CS
GND
–R8–
–5
–5
BUSY
CS
R/C
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
( )
DIGITAL I/O
GND
C10
C11
U1
®
J3
EXT
U3
INT
R/C
SELECT
C12
–R9–
EXTERNAL
R/C
U5
U6
J5
FROM P5
U4
P6
C13
U7
C15
C16
EXT
CS
SELECT
2
P7
40
1
PARALLEL OUTPUT
39
J4
C14
U5
B
–R3–
( )
GA
A
A
U2
J1
+5
EXTERNAL
+5
CS
GND
–R8–
–5
–5
BUSY
CS
R/C
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
( )
( )
RV1
P5
( )
( )
J2
U1
P2
P4
C6
C7
–R1–
–R2–
C4
C1
P1
PIN 1
RV2
C2
oA
–R5–
–R6–
B
+5 GND +5
P2
POWER
C8
C9
P3
ANALOG
INPUT
A4
OPTIONAL
POWER
–R7–
+V
–5 GND +5
BURR-BROWN COR.
ADS7810/19
EVALUATION BOARD
P1
C10
C11
DIGITAL I/O
GND
( )
P4
C6
C7
–R3–
( )
RV1
( )
J2
–R1–
–R2–
C4
–R5–
–R6–
B
POWER
PIN 1
RV2
oA
C8
C9
ANALOG
INPUT
A4
OPTIONAL
POWER
–R7–
P2
C5
P3
–5 GND +5
BURR-BROWN COR.
ADS7810/19
EVALUATION BOARD
DIGITAL I/O
GND
–V GND +V
P1
–V GND +V
+5
+5
GND
–5
–5
BUSY
CS
R/C
D0 (LSB)
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11 (MSB)
C5
P5
®
J3
OPTIONAL
POWER
POWER
EXT
U3
INT
R/C
SELECT
C12
–R9–
EXTERNAL
R/C
U5
U6
J5
FROM P5
U4
P6
C13
U7
C15
C16
EXT
CS
SELECT
2
P7
40
1
PARALLEL OUTPUT
39
J4
C14
FIGURE 11. Factory Settings for Step 6.
U6
U4
C13
C15
2
C16
P6
1
40
PARALLEL OUTPUT
MSB
LSB
39
DATA VALID
FIGURE 10. Factory Settings for Step 5.
®
7
DEM-ADS7810/19
FIGURE 12. DEM-ADS7810/19C Circuit Diagram.
®
DEM-ADS7810/19
8
Analog
Input
P3
R4
R6
1kΩ
+5V
U2
–V
GND
+V
–5V
GND
3
2
3
2
1
3
2
1
C12
0.1µF
+5V
P1
P2
–V
4
OPA671
7
+V
+
C2
0.1µF
C13
0.1µF
+5V
–V
+V
–5
+5
RV2
5kΩ
R3
221kΩ
–5V
+5V
C14
0.1µF
+
C4
10µF
C15
0.1µF
+5V
OPTIONAL
POWER
POWER
+5V
+5V
OA
C1
+ 0.1µF
RV1
5kΩ
GA
6
B
R7
1kΩ
B
R5
1kΩ
A
J2
J1
A
C5
10µF
C16
0.1µF
+5V
+
R4
49.9Ω
Out
13
D4
14
12
D5
11
9
D8
D6
8
10
7
D9
D7
6
D10
5
4
3
2
1
8
DGND
D4
D5
D6
D7
D8
D9
D10
D11 (MSB)
AGND2
CAP
REF
+5V
9
10
1
15
11
4
5
4
D3
D2
D1
(LSB) D0
NC
+VANA
+VDIG
DGND
R/C
CS
BUSY
–VANA
+VDIG
+VANA
U1
ADS7810
AGND1
VIN
GND
7
D11
8.000MHz
F110E
U7
14
+V
+5V
RCO
QD
QC
QB
D2
D3
15
D1
D0
16
17
18
19
20
21
22
23
24
25
26
27
28
D
C
B
QA
MAX/MIN
+
+5V
13
7
6
2
3
12
+ C5 + C5
0.1µF 0.1µF
LOAD
CTEN
D/U
CLK
A
U3
74HCT190
11
9
7
5
3
1
D6
D7
D8
D9
D10
D11
15
D4
13
17
D3
D5
19
P5
26
25
D2
28
27
2
4
6
8
10
12
14
16
18
20
22
24
30
29
21
32
34
–5V 31
36
33
38
+5V 37
35
40
I/O
Digital
1
2
U4
74HCT14
39
23
C11
0.1µF
D1
+
D0
C10
0.1µF
+5V
–5V
C6
C6
10µF 10µF
3
4
5
2
3
4
5
6
7
8
9
D5
D6
D7
D8
D9
D10
D11
11
1
9
8
7
6
5
4
3
2
11
1
6 13
CLK
8D
7D
6D
5D
4D
3D
2D
1D
13
15
17
19
21
23
25
27
29
31
33
35
37
39
8Q
7Q
6Q
5Q
4Q
3Q
2Q
1Q
12
13
14
15
16
17
18
1
3
5
7
9
19
12
13
14
15
16
17
8
External
CS
74HCT574
8Q
7Q
6Q
5Q
4Q
3Q
2Q
18
9
P4
External
R/C
11
OE
8D
7D
6D
5D
4D
3D
2D
1Q
10
19
R9
49.9Ω
R8
49.9Ω
P6
U5
CLK
1D
U6
12 11
74HCT574
OE
EXT
CS
Select
D4
D3
D2
D1
D0
EXT
R/C
INT
From P5
J5
J3
P1
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
Output
Parallel
NOTE: This circuit diagram includes the offset and gain circuitry. Refer to pages 3, 4 and 5 for factory settings.
PIN
ADS7810/19P
FUNCTION
ADS7810/19P
FUNCTION
PIN
PIN
ADS7810/19P
FUNCTION
ADS7810/19P
FUNCTION
PIN
1
D11(MSB)
GND
2
1
B1(MSB)
GND
2
3
D10
GND
4
3
B2
GND
4
5
D9
GND
6
5
B3
GND
6
7
D8
GND
8
7
B4
GND
8
9
D7
GND
10
9
B5
GND
10
11
D6
GND
12
11
B6
GND
12
13
D5
GND
14
13
B7
GND
14
15
D4
GND
16
15
B8
GND
16
17
D3
GND
18
17
B9
GND
18
19
D2
GND
20
19
B10
GND
20
21
D1
GND
22
21
B11
GND
22
23
D0 (LSB)
GND
24
23
B12
GND
24
25
R/C
GND
26
25
DATA LOW
GND
26
27
CS
GND
28
27
DATA LOW
GND
28
29
BUSY
GND
30
29
DATA LOW
GND
30
31
–5V
GND
32
31
DATA LOW
GND
32
33
–5V
GND
34
33
DATA VALID
GND
34
35
GND
GND
36
35
GND
36
37
+5V
GND
38
37
GND
38
39
+5V
GND
40
39
GND
40
TABLE II. Pinout of the Digital I/O Connector (P5).
GND
TABLE III. Pinout of Buffered Output (P6).
FIGURE 13. PCB Component Side (Ground Plane).
®
9
DEM-ADS7810/19
FIGURE 14. PCB Solder Side
®
DEM-ADS7810/19
10
INSTALLED COMPONENT LIST
REFERENCE
QUANTITY
PART NUMBER
DESCRIPTION
MANUFACTURER(1)
C1, C2, C6, C8-C10
C12-C16
10
SR205C104KAA
0.1µF Ceramic Capacitor
AVX
C3-5, 7, 9,11
6
TAP106K010SCS
10µF 10V Tantalum Capacitor
AVX
J1-J3, J5
4
NSH-3SB-S1-T
3 X 1 Header
Robinson Nugent
P7
P1, P2
1
2
IDH-40LP-S3-TG
ED500/3DS
20 x 2 Shrouded Header
3-pin Power Block
Robinson Nugent
On-Shore Technology
P3, P4, P6
3
KC-79-274-M06
PCB Mount BNC Connector
Kings
P5
1
NSH-40DB-S1-T
20 X 2 Header
Robinson Nugent
R2, R8, R9
3
5043ED49R90F
49.9Ω 1/4W 1% MF Resistor
Philips
R5, R6, R7
3
5193ED1K000F
1kΩ 1/4W 1% MF Resistor
Philips
U1
1
ADS7810P
12-Bit Sampling A/D Converter
Burr-Brown
U2
1
OPA671
Op Amp
Burr-Brown
U3
1
74HC190
4-Bit Decade Counter DIP
T.I.
U4
1
74HC14
Hex Schmitt Inverters DIP
T.I.
U5, U6
2
74HC574
8-Bit Latch DIP
T.I.
U7
1
F1100E
8.000MHz Crystal Oscillator
Fox
5
MSB-2366-G-C-STP
0.1 Centerline Shunt
McKenzie
U1
1
DIP-328011B
28-Pin Socket (0.3")
McKenzie
U2
1
DIP-308011B
8-Pin Socket
McKenzie
REFERENCE
QUANTITY
ITEM
DESCRIPTION
MANUFACTURER(1)
Demo Board
1
DEM-ADS7810/19C
Fully assembled printed circuit board with ADS7810P installed.
Burr-Brown
U1
1
ADS7819P
12-bit Sampling A/D Converter
Burr-Brown
PACKING LIST
RV1,RV2
2
RJ26FW502
5kΩ 1/4" trimmer resistors
Bourns
R1
1
5043ED4k990F
4.99kΩ 1/4W 1% MF resistor
Phillips
R3
1
5043ED4221KF
221kΩ 1/4W 1% MF resistor
Phillips
ADS7810P
1
PDS-1138A
ADS7810 Product Data Sheet
Burr-Brown
ADS7819P
1
PDS-1193A
ADS7819 Product Data Sheet
Burr-Brown
Demo Board Info.
1
LI-454
DEM-ADS7810/19C Manual
Burr-Brown
NOTE: (1) For reference only. Equivalent components may be used.
®
11
DEM-ADS7810/19