DEMO MANUAL DC1337A
8-Channel, 12-Bit SAR ADC
with I2C Interface
Demonstration circuit 1337A features the LTC®2309, a performance of the LTC2309 can be evaluated directly in
low noise, low power, 8-channel, 12-bit, successive ap- that circuit.
proximation ADC with an I2C compatible serial interface. Design files for this circuit board are available at
The LTC2309 is available in a 24-pin 4mm × 4mm QFN http://www.linear.com/demo/DC1337A
package. DC1337A demonstrates the DC performance of
the LTC2309 in conjunction with the DC590 or DC2026 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
data collection boards (QuikEval™ controller). Alternatively, of their respective owners.
by connecting the DC1337 into a customer application the
Figure 1. DC1337A Connection Diagram
DEMO MANUAL DC1337A
Quick Start Procedure
Connect the DC1337 to a QuikEval controller using the The Help menu contains information on data logging the
supplied 14-conductor ribbon cable. Make sure the ADC results. The Tools menu has the data logging option
VCCIO jumper of the QuikEval controller is in the 5V as well as options for changing the number of points dis-
position. Connect the QuikEval controller to a host PC with played, the number of points in an average and whether
a standard USB A/B cable. Apply an analog input voltage the data is displayed in LSBs or Volts. The View menu can
to CH0-CH7 on connector J1. Run the evaluation software be used to access the LTC2309 product page.
supplied with the QuikEval controller or download it from If the QuikEval program is started without the demo board
www.linear.com/software. The correct control panel will attached to the QuikEval controller, the Tools menu can be
be loaded automatically. Click the Collect (Figure 2) but- used to check for updates and automatically install them.
ton to begin reading CH0-CH3. Press the Page 1 Button DC1337 requires at least version K71 of the QuikEval
to toggle to Page 2. This displays CH4-CH7. This button software.
toggles between the two displays.
Signal Connections Turrets
J1 Connector for CH0-CH7, COM and BIAS/2. Limit input EXT_BIAS External Bias connection. This can be used
voltage swings to GND-VDD. For optimum performance, the to drive the BIAS/2 line through a 2:1 divider. To use this
input should be bandlimited to the frequencies of interest. pin put jumper J6 in the EXT position and apply desired
Jumper J2 AD0 I2C address line. Set to GND for operation bias voltage.
with supplied software. For operation without QuikEval, 5V 5V supply line for the DC1337. Use this line only if the
configure as desired: Low (GND), High (5V) or Float (FLT) QuikEval controller is not used
Jumper J3 AD1 I2C address line. Set to GND for operation GND Ground line for the DC1337
with supplied software. For operation without QuikEval, SDA I2C bidirectional data line. Controlled by the QuikEval
configure as desired: Low (GND), High (5V) or Float (FLT) controller if connected.
Jumper J4 COM Common pin for single ended ADC SCL I2C clock line. Controlled by the QuikEval controller
conversions. Can be set to GND or left floating (FLT) so if connected.
that COM can be driven by J1.
J5 QuikEval interface connector. Provides power and I2C VREF Connected to ADC VREF pin.
interface to the DC1337. REFCOMP Connected to ADC REFCOMP pin.
Jumper J6 BIAS Selects between REFCOMP and an BIAS/2 Bias Voltage/2 (REFCOMP or EXT)
external bias voltage to drive the Bias/2 line. Bias/2 is
designed to set a center point for the minus input during
DEMO MANUAL DC1337A
Using the DC1337 without the QuikEval Controller ground as well as generating SDA and SCL. These signals
Interface signals SDA and SCL and power are normally can be provided through the 14-pin ribbon cable connector.
provided to the DC1337 by the QuikEval controller. If you See schematic for pinout. See the LTC2309 data sheet for
use this board without the QuikEval controller, it is the information on driving SDA and SCL.
user’s responsibility to connect a 5V power supply and
Figure 2. DC1337A QuikEval Screenshot
DEMO MANUAL DC1337A
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
2 4 C2, C3 , C4, C18 CAP., 0.1µF, X7R, 25V, 10%, 0603 AVX, 06033C104KAT2A TDK, C1608X7R1E104K080AA
3 9 C5, C6, C7, C8, C9, CAP.,47pF, C0G, 25V, 10%, 0603 AVX, 06033A470KAT2A
C10, C11, C12, C13
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
6 8 E1, E2, E3, E4, E5, TEST POINT, TURRET, 0.064", MTG. HOLE MILL-MAX, 2308-2-00-80-00-00-07-0
E6, E7, E8
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, MOLEX, 87831-1420
11 9 R1, R2, R3, R4, R5, RES., 100Ω, 1%, 1/10W, 0603 VISHAY, CRCW0603100RFKEA NIC, NRC06F1000TRF
R6, R7, R8, R9
12 1 R10 RES., 49.9Ω, 1%, 1/10W, 0603 VISHAY, CRCW060349R9FKEA PANASONIC,
13 5 R11, R12, R13, R14, 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
5 4 3 2 1 Schematic
This circuit is proprietary to Linear Technology and supplied REVISION HISTORY
for use with Linear Technology parts. ECO REV DESCRIPTION DATE APPROVED
Customer Notice:Linear Technology has made a best effort to
design a circuit that meets customer-supplied specifications; 1 PROTO
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.
D 5V D
5V 5V 5V
GND E2 C1 10uF C2 0.1uF C3 0.1uF Diagram
J1 R1 100 U1
1 2 21 13 12 LTC2309CUF
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- Information furnished by Linear Technology Corporation is believed to be accurate and reliable. 3 4 R2 100
5 6 R3 100 22 VDD VDD VDD E3
7 8 R4 100 23 CCCCCCCCHHHHHHHH01234567 SDA 17 SDA
9 10 R5 100 2 SCL
R6 100 3 AD1 15 E4
11 12 4 REFCOMP
13 14 R7 100 6 AD0
R8 100 COM GND GND GND GND GND GND PAD 5V J2 5V J3
15 16 1 AD0 1 AD1
17 18 R9 100
9 10 11 18 19 20 25 8 7 2 FLT 2 FLT
C 19 20 C
3 5V 3 5V
C5 C6 C7 C8 J4 1 COM GND GND
47pF 47pF 47pF 47pF 2 FLT 4 4
C9 C10 C11 C12 C13 3
47pF 47pF 47pF 47pF 47pF R10 E5 5V J5
C14 49.9 1% 1 VUNREG
BIAS 2.2uF 2 5V
E6 EXT REFCOMP E7 DEMO MANUAL
EXT_BIAS 3 1 REFCOMP 6
C15 2 J6 CS
C16 4 SCK/SCL
10uF 10uF 7
B E8 1% 11 B
R12 9 EESDA
C17 4.99K R13 R14 12 EEGND
1uF 1% 4.99K 4.99K U2 R15
1% 1% 24LC025-I/ST 4.99K 14
8 1% NC
6 SCL VCC GND GND GND
0.1uF WP 3 8 13
3 A2 SDA 5
2 A1 GND
CONTRACT NO. 1630 McCarthy Blvd. DC1337A
A Milpitas, CA 95035 A
APPROVALS DATE TECHNOLOGY Fax: (408)434-0507
DRAWN mi 09/24/07 TITLE SCH, LTC2309CUF, 8-CH LOW NOISE I2C
DESIGNER SIZE CAGE CODE DWG NO RE1 V
5 Tuesday, July 12, 2016 SCALE: FILENAME: 1 3 3 7 A -1. D S N SHEET 1
5 4 3 2 1
DEMO MANUAL DC1337A
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
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
6 Linear Technology Corporation LT 0816 • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com © LINEAR TECHNOLOGY CORPORATION 2016
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Analog Devices Inc.: