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dc1337af
DEMO MANUAL DC1337A
Description
LTC2309
8-Channel, 12-Bit SAR ADC
with I2C Interface
Demonstration circuit 1337A features the LT C
®
2309, a
low noise, low power, 8-channel, 12-bit, successive ap-
proximation ADC with an I2C compatible serial interface.
The LTC2309 is available in a 24-pin 4mm × 4mm QFN
package. DC1337A demonstrates the DC performance of
the LTC2309 in conjunction with the DC590 or DC2026
data collection boards (QuikEval™ controller). Alternatively,
by connecting the DC1337 into a customer application the
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
QuikEval is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
BoarD photo
performance of the LTC2309 can be evaluated directly in
that circuit.
Design files for this circuit board are available at
http://www.linear.com/demo/DC1337A
Figure 1. DC1337A Connection Diagram
INPUTS
0V TO
REFCOMP
DC590 OR
DC2026
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dc1337af
DEMO MANUAL DC1337A
Quick start proceDure
Connect the DC1337 to a QuikEval controller using the
supplied 14-conductor ribbon cable. Make sure the
VCCIO jumper of the QuikEval controller is in the 5V
position. Connect the QuikEval controller to a host PC with
a standard USB A/B cable. Apply an analog input voltage
to CH0-CH7 on connector J1. Run the evaluation software
supplied with the QuikEval controller or download it from
www.linear.com/software. The correct control panel will
be loaded automatically. Click the Collect (Figure 2) but-
ton to begin reading CH0-CH3. Press the Page 1 Button
to toggle to Page 2. This displays CH4-CH7. This button
toggles between the two displays.
The Help menu contains information on data logging the
ADC results. The Tools menu has the data logging option
as well as options for changing the number of points dis-
played, the number of points in an average and whether
the data is displayed in LSBs or Volts. The View menu can
be used to access the LTC2309 product page.
If the QuikEval program is started without the demo board
attached to the QuikEval controller, the Tools menu can be
used to check for updates and automatically install them.
DC1337 requires at least version K71 of the QuikEval
software.
harDware setup
Signal Connections
J1 Connector for CH0-CH7, COM and BIAS/2. Limit input
voltage swings to GND-VDD. For optimum performance, the
input should be bandlimited to the frequencies of interest.
Jumper J2 AD0 I2C address line. Set to GND for operation
with supplied software. For operation without QuikEval,
configure as desired: Low (GND), High (5V) or Float (FLT)
Jumper J3 AD1 I2C address line. Set to GND for operation
with supplied software. For operation without QuikEval,
configure as desired: Low (GND), High (5V) or Float (FLT)
Jumper J4 COM Common pin for single ended ADC
conversions. Can be set to GND or left floating (FLT) so
that COM can be driven by J1.
J5 QuikEval interface connector. Provides power and I2C
interface to the DC1337.
Jumper J6 BIAS Selects between REFCOMP and an
external bias voltage to drive the Bias/2 line. Bias/2 is
designed to set a center point for the minus input during
bipolar operation.
Turrets
EXT_BIAS External Bias connection. This can be used
to drive the BIAS/2 line through a 2:1 divider. To use this
pin put jumper J6 in the EXT position and apply desired
bias voltage.
5V 5V supply line for the DC1337. Use this line only if the
QuikEval controller is not used
GND Ground line for the DC1337
SDA I2C bidirectional data line. Controlled by the QuikEval
controller if connected.
SCL I2C clock line. Controlled by the QuikEval controller
if connected.
VREF Connected to ADC VREF pin.
REFCOMP Connected to ADC REFCOMP pin.
BIAS/2 Bias Voltage/2 (REFCOMP or EXT)
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dc1337af
DEMO MANUAL DC1337A
harDware setup
Using the DC1337 without the QuikEval Controller
Interface signals SDA and SCL and power are normally
provided to the DC1337 by the QuikEval controller. If you
use this board without the QuikEval controller, it is the
user’s responsibility to connect a 5V power supply and
ground as well as generating SDA and SCL. These signals
can be provided through the 14-pin ribbon cable connector.
See schematic for pinout. See the LTC2309 data sheet for
information on driving SDA and SCL.
Figure 2. DC1337A QuikEval Screenshot
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DEMO MANUAL DC1337A
parts List
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
1 3 C1, C15, C16 CAP., 10µF, X5R, 6.3V, 20%, 0603 MURATA, GRM188R60J106ME47D AVX,
06036D106MAT2A NIC, NMC0603X5R106M6.3TRPF
TDK, C1608X5R0J106M080AB
2 4 C2, C3 , C4, C18 CAP., 0.1µF, X7R, 25V, 10%, 0603 AVX, 06033C104KAT2A TDK, C1608X7R1E104K080AA
3 9 C5, C6, C7, C8, C9,
C10, C11, C12, C13
CAP.,47pF, C0G, 25V, 10%, 0603 AVX, 06033A470KAT2A
4 1 C14 CAP., 2.2µF, X5R, 6.3V, 10%, 0603 TAIYO YUDEN, JMK107BJ225KA-T AVX,
06036D225KAT2A MURATA, GRM188R60J225KE19D
5 1 C17 CAP., 1µF, X7R, 16V, 10%, 0603 TDK, C1608X7R1C105K080AC AVX, 0603YC105KAT2A
NIC, NMC0603X7R105K16TRPF
6 8 E1, E2, E3, E4, E5,
E6, E7, E8
TEST POINT, TURRET, 0.064", MTG. HOLE MILL-MAX, 2308-2-00-80-00-00-07-0
7 1 J1 CONN., HDR., MALE, 2×10, 2.54mm, THT, STRT SAMTEC, TSW-110-07-L-D
8 2 J2, J3 CONN., HDR., MALE, 1×4, 2.54mm, THT, STRT SAMTEC, TSW-104-07-L-S
9 2 J6, J4 CONN., HDR., MALE, 1×3, 2.54mm, THT, STRT SAMTEC, TSW-103-07-L-S
10 1 J5 CONN., HDR., MALE, 2×7, 2mm, THT, VERT,
SHROUDED
MOLEX, 87831-1420
11 9 R1, R2, R3, R4, R5,
R6, R7, R8, R9
RES., 100Ω, 1%, 1/10W, 0603 VISHAY, CRCW0603100RFKEA NIC, NRC06F1000TRF
12 1 R10 RES., 49.9Ω, 1%, 1/10W, 0603 VISHAY, CRCW060349R9FKEA PANASONIC,
ERJ3EKF49R9V
13 5 R11, R12, R13, R14,
R15
RES., 4.99kΩ, 1%, 1/10W, 0603 VISHAY, CRCW06034K99FKEA NIC, NRC06F4991TRF
14 1 U1 IC, 5V, 8-CH, 12-Bit I2C SAR ADC , QFN-24UF LINEAR TECH., LTC2309CUF#PBF
15 1 U2 IC, MEMORY, EEPROM, 2K-Bit, 400kHz, TSSOP-8 MICROCHIP, 24LC025-I/ST
16 4 JP2, JP3, JP4, JP6 CONN., SHUNT, FEMALE, 2 POS, 2.54mm SAMTEC, SNT-100-BK-G
17 1 PCB, DC1337A DEMO CIRCUIT 1337A
18 1 STENCIL STENCIL 1337A
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dc1337af
DEMO MANUAL DC1337A
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
schematic Diagram
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
EXT
GND
5V
5V5V 5V
5V
5V 5V
REVISION HISTORY
DESCRIPTION DATE APPROVEDECO REV
PROTO1 09/25/07
REVISION HISTORY
DESCRIPTION DATE APPROVEDECO REV
PROTO1 09/25/07
REVISION HISTORY
DESCRIPTION DATE APPROVEDECO REV
PROTO1 09/25/07
Customer Notice:
Linear Technology has made a best effort to
design a circuit that meets customer-supplied specifications;
however, it remains the customer's responsibility to verify proper
and reliable operation in the actual application, Component
substitution and printed circuit board layout may significantly
affect circuit performance or reliability. Contact Linear
Applications Engineering for assistance.
This circuit is proprietary to Linear Technology and supplied
for use with Linear Technology parts.
Customer Notice:
Linear Technology has made a best effort to
design a circuit that meets customer-supplied specifications;
however, it remains the customer's responsibility to verify proper
and reliable operation in the actual application, Component
substitution and printed circuit board layout may significantly
affect circuit performance or reliability. Contact Linear
Applications Engineering for assistance.
This circuit is proprietary to Linear Technology and supplied
for use with Linear Technology parts.
Customer Notice:
Linear Technology has made a best effort to
design a circuit that meets customer-supplied specifications;
however, it remains the customer's responsibility to verify proper
and reliable operation in the actual application, Component
substitution and printed circuit board layout may significantly
affect circuit performance or reliability. Contact Linear
Applications Engineering for assistance.
This circuit is proprietary to Linear Technology and supplied
for use with Linear Technology parts.
SIZE
SCALE:
CAGE CODE
DWG NO
REV
SHEET OF
FILENAME:
TITLE
CONTRACT NO.
APPROVALS
DATE
DRAWN
CHECKED
APPROVED
ENGINEER
DESIGNER
TECHNOLOGY
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
1
DC1337A
Tuesday, July 12, 2016
11
SCH, LTC2309CUF, 8-CH LOW NOISE I2C ADC
mi
09/24/07
1337A-1.DSN
SIZE
SCALE:
CAGE CODE
DWG NO
REV
SHEET OF
FILENAME:
TITLE
CONTRACT NO.
APPROVALS
DATE
DRAWN
CHECKED
APPROVED
ENGINEER
DESIGNER
TECHNOLOGY
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
1
DC1337A
Tuesday, July 12, 2016
11
SCH, LTC2309CUF, 8-CH LOW NOISE I2C ADC
mi
09/24/07
1337A-1.DSN
SIZE
SCALE:
CAGE CODE
DWG NO
REV
SHEET OF
FILENAME:
TITLE
CONTRACT NO.
APPROVALS
DATE
DRAWN
CHECKED
APPROVED
ENGINEER
DESIGNER
TECHNOLOGY
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
1
DC1337A
Tuesday, July 12, 2016
11
SCH, LTC2309CUF, 8-CH LOW NOISE I2C ADC
mi
09/24/07
1337A-1.DSN
R11
4.99K
1%
R6 100
C13
47pF
U2
24LC025-I/ST
A0
1
A1
2
A2
3
GND
4
SDA 5
SCL
6
WP
7
VCC 8
FLT
COM
J4
1
2
3
R14
4.99K
1%
C6
47pF
R13
4.99K
1%
R8 100
C10
47pF
E7
REFCOMP
J2 AD0
FLT
5V
GND
1
2
3
4
J6
BIAS
REFCOMP
1
2
3
SDA
SCL
AD1
AD0
GND
VDD
VDD
VDD
VREF
REFCOMP
PAD
GND
GND
GND
GND
GND
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
U1
LTC2309CUF
11
19
16
17
15
14
25
8
18
20
7
10
9
21
12
13
22
23
24
1
2
3
4
5
6
E1
5V
E5
VREF
R9 100
C1
10uF
R3 100
E2
GND C2 0.1uF
R12
4.99K
1%
E8
BIAS/2
C11
47pF
C14
2.2uF
C17
1uF
C8
47pF
C18
0.1uF
R15
4.99K
1%
C15
10uF
J5
5V
2
SCK/SCL
4
CS
6
GND
8
EEVCC
10
EEGND
12
NC
14
VUNREG
1
GND
3
MISO
5
MOSI/SDA
7
EESDA
9
EESCL
11
GND
13
R4 100
C3 0.1uF
R10
49.9
1%
R1 100
R5 100
C7
47pF
J3 AD1
FLT
5V
GND
1
2
3
4
E4 SCL
C12
47pF
C16
10uF
R7 100
R2 100
C5
47pF
E3
SDA
C9
47pF
E6
EXT_BIAS
C4 0.1uF
J1
1
3
5
7
9
11
13
15
17
19
2
4
6
8
10
12
14
16
18
20
FFGND
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dc1337af
DEMO MANUAL DC1337A
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2016
LT 0816 • PRINTED IN USA
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions:
This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT
OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete
in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety
measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union
directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.
If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date
of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU
OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR
ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims
arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all
appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or
agency certified (FCC, UL, CE, etc.).
No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance,
customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.
Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and
observe good laboratory practice standards. Common sense is encouraged.
This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application
engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
