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Linear Technology ANALOG DEVICES DC2608 Manual

Digital temperature measurement system

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DESCRIPTION
The DC2608 is the starter kit for demonstrating the per-
formance and ease of use of the
complete temperature measurement system on a chip.
This kit includes the DC2618 (main demo circuit contain-
ing the LTC2986-1) and the DC2210 (a simple experiment
circuit allowing bread boarding). In addition to the starter
demonstration kit, sensor specific demonstration boards
highlighting the performance of RTDs, thermistors, or
thermocouples are also available.
• Universal Temperature Measurement Board – DC2211
• Thermocouple Board – DC2212
• Dedicated RTD Board – DC2213
• Dedicated Thermistor Board – DC2214
Digital Temperature Measurement System
LTC
2986-1, which is a
®
Figure 1. DC2618 Temperature Measurement Demonstration Board
DEMO MANUAL DC2608
DC2618 and DC2210
The DC2618 is a member of the QuikEval™ family of dem-
onstration boards. It is designed to allow easy evaluation
of the LTC2986-1 and may be connected to any one of
the sensor daughter boards.
These daughter boards allow evaluation of the various
LTC2986-1 sensor types (see Figure 1).
For the serial digital interface, the DC2618 may be con-
nected to the DC2026 Linduino
Design files for this circuit board are available at
http://www.linear.com/demo/DC2608
L, LT, LTC, LTM, Linear Technology, the Linear logo and Linduino are registered trademarks
and QuikEval is trademark of Analog Devices, Inc. All other trademarks are the property of their
respective owners.
LTC2986-1
One.
®
dc2608f
1

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Summary of Contents for Linear Technology ANALOG DEVICES DC2608

  • Page 1 • Thermocouple Board – DC2212 L, LT, LTC, LTM, Linear Technology, the Linear logo and Linduino are registered trademarks • Dedicated RTD Board – DC2213 and QuikEval is trademark of Analog Devices, Inc. All other trademarks are the property of their respective owners.
  • Page 2: Quick Start Procedure

    DEMO MANUAL DC2608 QUICK START PROCEDURE Connect one of the five sensor daughter boards (DC2210, The demo software helps program and run the LTC2986-1. DC2211, DC2212, DC2213 or DC2214) to the DC2618 It can configure the LTC2986-1, check and save the con- demo board.
  • Page 3 DEMO MANUAL DC2608 HARDWARE SETUP DC2210 EXPERIMENTER BOARD connect any of the supported sensors and sense resistors (INCLUDED IN DC2608 KIT) to any of the LTC2986-1 inputs in this area. Figure 4 shows the connection schematic of the DC2210 Experimenter The DC2210 experimenter board (see Figure 3) brings all board.
  • Page 4 DEMO MANUAL DC2608 HARDWARE SETUP Figure 4. DC2210 Experimenter Board Schematic dc2608f...
  • Page 5 DEMO MANUAL DC2608 HARDWARE SETUP DC2211 UNIVERSAL TEMPERATURE MEASUREMENT BOARD The universal temperature measurement board (see Figure 5) allows the user to connect any of the LTC2986-1 supported sensors to the DC2618 demo board. Figure 5. DC2211 Universal Temperature Measurement Board dc2608f...
  • Page 6 DEMO MANUAL DC2608 HARDWARE SETUP The universal temperature measurement board has a The external interface on the universal temperature mea- built-in sense resistor for RTD applications as well as a surement board is an 8-position screw-terminal block cold junction sensor diode for thermocouple applications with the flowing pinout.
  • Page 7: Hardware Setup

    DEMO MANUAL DC2608 HARDWARE SETUP UNIVERSAL TEMPERATURE MEASUREMENT • A 4-wire RTD connected to positions A-D using the DAUGHTER BOARD EXAMPLES on-board sense resistor as the ratiometric reference (see Figure 7b for the schematic and Figure 8b for the • Four thermocouples connected to positions A-D with corresponding software configuration).
  • Page 8 DEMO MANUAL DC2608 HARDWARE SETUP Figure 8a. DC2211 Four Thermocouple Software Configuration dc2608f...
  • Page 9 DEMO MANUAL DC2608 HARDWARE SETUP Figure 8b. DC2211 4-Wire RTD Software Configuration dc2608f...
  • Page 10 DEMO MANUAL DC2608 HARDWARE SETUP DC2212 THERMOCOUPLE DAUGHTER BOARD To demonstrate the flexibility of the LTC2986-1, the ther- mocouple board includes cold junction diodes (Q1 and Q2) The thermocouple board (see Figure 9) demonstrates embedded in each thermocouple socket. Alternatively, a the flexibility, accuracy, and low noise features of the 4-wire PT100 RTD (R5) can be used as the cold junction LTC2986-1 thermocouple modes.
  • Page 11 DEMO MANUAL DC2608 HARDWARE SETUP Figure 10. DC2212 Thermocouple Board Schematic dc2608f...
  • Page 12 DEMO MANUAL DC2608 HARDWARE SETUP Figure 11. DC2212 Software Configuration dc2608f...
  • Page 13 DEMO MANUAL DC2608 HARDWARE SETUP DC2213 DEDICATED RTD BOARD measured value of this sense resistor is stored in an on- board EEPROM which the LTC2986-1 demo software can The DC2213 dedicated RTD board (see Figure 12) dem- read and use to configure the sense resistor value. onstrates the flexibility, accuracy, and low noise features of the LTC2986-1 RTD sensor modes.
  • Page 14 DEMO MANUAL DC2608 HARDWARE SETUP To see the effects of parasitic thermocouples on non-rotated capabilities of the LTC2986-1. Please note that the variable measurement modes, first measure the on-board 0°C resistor feature of the DC2213 requires channel 11 and PT100 simulator in a non-rotated configuration and see will not work with the DC2618.
  • Page 15 DEMO MANUAL DC2608 HARDWARE SETUP Figure 14. DC2213 Software Configuration dc2608f...
  • Page 16 DEMO MANUAL DC2608 HARDWARE SETUP DC2214 DEDICATED THERMISTOR BOARD The DC2214 dedicated thermistor board includes several thermocouple’s temperature changes. To see the benefit of the rotated measurement mode, switch to the rotation/ circuits (see Figure 15) to demonstrate the flexibility, ac- curacy, and low noise features of the LTC2986-1 thermistor sharing configuration and see the errors introduced by the parasitic thermocouple disappear (the effects are more...
  • Page 17 DEMO MANUAL DC2608 HARDWARE SETUP Figure 15. DC2214 Thermistor Daughter Board dc2608f...
  • Page 18 DEMO MANUAL DC2608 HARDWARE SETUP Figure 16. DC2214 Dedicated Thermistor Board Schematic dc2608f...
  • Page 19 DEMO MANUAL DC2608 HARDWARE SETUP Figure 17. DC2214 Software Configuration dc2608f...
  • Page 20: Parts List

    DEMO MANUAL DC2608 PARTS LIST ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER DC2608 Required Circuit Components C1 TO C11 CAP., NP0, 100pF 100V, 5%, 0603 MURATA, GRM1885C2A101JA01D C22, C24, C25, C30, CAP., X7R, 10µF 10V, 10%, 0805 MURATA, GRM21BR71A106KE51L C31, C33, C34 C23, C26, C27, C28, CAP., X7R, 0.1µF 25V, 10%, 0603 MURATA, GRM188R71E104KA01D...
  • Page 21: Schematic Diagram

    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.
  • Page 22 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.
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