THORLABS MTD415T Datasheet

THORLABS MTD415T Datasheet

Miniature temperature controller

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Data Sheet
Miniature Temperature Controller MTD415T
Features
·
Small, safe and very high accuracy complete single-module controller
·
High speed, ultra stable digital PID Loop
·
Up to ± 1.5 A TEC current
·
Very low output current noise
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Very small footprint (21.0 x 12.4 mm)
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Circuit Height 3.1 mm
·
W
Supports 10 k
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Single power supply operation
Applications
·
Active cooling and temperature stabilization for a wide range of laser modules and diodes
·
WDM, DWDM Laser-Diode Temperature Control
·
EDFA Optical Amplifiers
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Temperature stabilization of photo detectors and photodiodes
·
ATE
Short Description and Typical Application Diagram
The MTD415T is a compact and highly integrated temperature controller optimized for use in
high performance thermoelectric temperature control applications.
The on-chip power stage and the thermal control loop circuitry minimize external components
while maintaining high efficiency.
The output current is directly controlled to eliminate current surges. An adjustable TEC current
limit provides the highest level of TEC protection.
The MTD415T is operated from a single power supply and provides a bipolar ±1.5 A output by
connecting the TEC to the output of a bipolar power stage. True bipolar operation ensures
temperature control without "dead zones" or other nonlinearities at low TEC current values.
The digital control interface allows quick access to all system parameters as well as to digital
measurement data, this way enabling a simple integration into different systems.
thermistor temperature sensor
MTD415T Data Sheet Rev. 1.0
1

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Summary of Contents for THORLABS MTD415T

  • Page 1 TEC protection. The MTD415T is operated from a single power supply and provides a bipolar ±1.5 A output by connecting the TEC to the output of a bipolar power stage. True bipolar operation ensures temperature control without “dead zones”...
  • Page 2 MTD415T Revision History Revision Changes with respect to previous revision Initial Release MTD415T Data Sheet Rev. 1.0...
  • Page 3: Table Of Contents

    6.2.6 Factory Default Settings 6.3 Error Register and Safety Bitmask PID Tutorial Troubleshooting Drawing List of Acronyms Warranty Copyright and Exclusion of Reliability Thorlabs 'End of Life' Policy Thorlabs Worldwide Contacts © 2016 Thorlabs GmbH MTD415T Data Sheet Rev. 1.0...
  • Page 4: Pin Configuration And Functions

    Low = Temperature outside programmed temperature window or an error occurred). Digital Interface Transmit Signal UART Transmit Asynchronous Data Output. Connect this pin to the RX pin of your application. MTD415T Data Sheet Rev. 1.0 © 2016 Thorlabs GmbH...
  • Page 5 TEC Element negative connection TEC - Connect this pin to the negative terminal of the TEC element. TEC Element positive connection TEC + Connect this pin to the positive terminal of the TEC element. © 2016 Thorlabs GmbH MTD415T Data Sheet Rev. 1.0...
  • Page 6: Technical Data

    (1) Above specifications are given for the free-air operating temperature range unless otherwise noted. (2) Stresses beyond those listed above may cause permanent damage to the product. These are stress ratings only; functional operation of the MTD415T at these or any other conditions beyond those indicated under Recommended Operating Conditions Electrical Characteristics is not implied.
  • Page 7: Electrical Characteristics

    ) Use only thermistors with 10k resistance at 25 °C (R ). Resistance Measurement Range: 4.2 to 29 k 25°C All technical data are valid at 23 ±5 °C and 45 ±15% rel. humidity (non condensing) © 2016 Thorlabs GmbH MTD415T Data Sheet Rev. 1.0...
  • Page 8: Typical Output Characteristics

    1. The maximum output power of 6 W can be delivered into a load resistance of 2.66 recommended operating conditions. 2. The maximum output power at lower than 2.66 load resistance (colored range) depends on environmental conditions. MTD415T Data Sheet Rev. 1.0 © 2016 Thorlabs GmbH...
  • Page 9: Functional Block Diagram

    In order to adapt the control loop to different thermal loads, and to optimize the temperature controller's response characteristics, a PID amplifier is used. Closer information please see in the PID Tutorial (page © 2016 Thorlabs GmbH MTD415T Data Sheet Rev. 1.0...
  • Page 10 NTC (thermistor) temperature sensor and it's output is designed for control of thermoelectric coolers (TEC). The MTD415T delivers a TEC current up to 1500 mA at 4.0 V compliance voltage. Power Supply The supply voltage ranges from 4.5 V to 5,5 V. From the supply voltage, the internal supply voltage for the microcontroller is derived.
  • Page 11: Typical Application

    5 Typical Application 5 Typical Application © 2016 Thorlabs GmbH MTD415T Data Sheet Rev. 1.0...
  • Page 12: Programmers Reference

    / write cycles. In order to protect the flash memory, changes to setting parameters are not stored automatically. If you want to keep parameter changes after power-down of the MTD415T, save them to the flash memory using the " "...
  • Page 13: Tec Commands

    < 0: Heating; x > 0: Cooling Reads the actual TEC voltage "U?" [x<LF>] [mV] *) This set value remains during the actual power-on cycle. Use the " " command to save it to the non-volatile memory. © 2016 Thorlabs GmbH MTD415T Data Sheet Rev. 1.0...
  • Page 14: Temperature

    Status output pin [x<LF>] [sec] *) This set value remains during the actual power-on cycle. Use the " " command to save it to the non-volatile memory. MTD415T Data Sheet Rev. 1.0 © 2016 Thorlabs GmbH...
  • Page 15: Control Loop

    [mA/K] Reading Reads the P Share "P?" [x<LF>] [mA/K] *) This set value remains during the actual power-on cycle. Use the " " command to save it to the non-volatile memory. © 2016 Thorlabs GmbH MTD415T Data Sheet Rev. 1.0...
  • Page 16 [(mA*s)/K] Reading Reads the D Share "D?" [x<LF>] [(mA*sec)/K] *) This set value remains during the actual power-on cycle. Use the " " command to save it to the non-volatile memory. MTD415T Data Sheet Rev. 1.0 © 2016 Thorlabs GmbH...
  • Page 17: Save Settings

    I share PID loop 200 mA/(K*sec) D share PID loop 100 (mA*sec)/K Critical PID loop gain (Loop test) 2000 mA/K Critical PID loop oscillation period (Loop test) 2000 msec Value of the Safety Bitmask © 2016 Thorlabs GmbH MTD415T Data Sheet Rev. 1.0...
  • Page 18: Error Register And Safety Bitmask

    MTD415T 6.3 Error Register and Safety Bitmask The MTD415T has an internal 16 bit error register: Bit Number Event Enable pin not set to L (GND) Internal temperature too high Thermal Latch-Up (TEC current at limit without temperature improvement) Cycling time too small...
  • Page 19 The Safety Bitmask can be used to mask any desired error at the Status output pin. Attention Masking an error may lead to damage of the MTD415T. For example, if bit 1 is masked, exceeding the internal temperature will not be reflected on the status pin as an error and the...
  • Page 20: Pid Tutorial

    The MTD415T microcontroller incorporates a digital PID controller. The P, I and D shares can be programmed manually or calculated automatically by the firmware by entering the results of a loop oscillation test.
  • Page 21 Read oscillation period at this value - for example, 5.58 sec. The critical gain and the critical oscillation period are found. 4. Program the MTD415T with these values in order to trigger the calculation of the PID shares and the cycle time by the firmware: Program the critical gain to the found above value: "...
  • Page 22: Troubleshooting

    MTD415T 8 Troubleshooting The MTD415T has an imprinted Data Matrix code, that contains manufacturing information: Please scan this code with your smartphone, and submit the DataMatrix code information to Thorlabs Compatible Android apps are: QR & Barcode Scanner QRbot by TeaCapps. This scanner allows to share the scanned code directly by email.
  • Page 23: Drawing

    9 Drawing 9 Drawing © 2016 Thorlabs GmbH MTD415T Data Sheet Rev. 1.0...
  • Page 24: List Of Acronyms

    Direct Current Electrostatic discharges Ground Graphic User Interface I²C Inter-Integrated Circuit µC Micro-Controller Negative Temperature Coefficient (thermistor) Printed Circuit Board SCPI Standard Commands for Programmable Instruments Surface Mounted Technology Thermoelectric cooler MTD415T Data Sheet Rev. 1.0 © 2016 Thorlabs GmbH...
  • Page 25: Warranty

    For warranty repairs or service the unit must be sent back to Thorlabs GmbH. The customer will carry the shipping costs to Thorlabs GmbH, in case of warranty repairs Thorlabs GmbH will carry the shipping costs back to the customer.
  • Page 26: Copyright And Exclusion Of Reliability

    Thorlabs GmbH dealer or system installer. All rights reserved. This document may not be reproduced, transmitted or translated to another language, either as a whole or in parts, without the prior written permission of Thorlabs GmbH. Copyright © Thorlabs GmbH 2016. All rights reserved.
  • Page 27: Thorlabs 'End Of Life' Policy

    Waste treatment on your own responsibility If you do not return an “end of life” unit to Thorlabs GmbH, you must hand it to a company specialized in waste recovery. Do not dispose of the unit in a litter bin or at a public waste disposal site.
  • Page 28: Thorlabs Worldwide Contacts

    Q Building 2nd Floor 2-23-2 Lane 2891, South Qilianshan Road Toshima-ku, Tokyo 170-0013 Putuo District Japan Shanghai 200331 Tel: +81-3-5979-8889 China Fax: +81-3-5979-7285 Tel: +86-21-60561122 www.thorlabs.jp Fax: +86-21-32513480 Email: sales@thorlabs.jp www.thorlabs.com Email: chinasales@thorlabs.com MTD415T Data Sheet Rev. 1.0 © 2016 Thorlabs GmbH...
  • Page 30 www.thorlabs.com...

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