1 / 17

Cubic Function Generator Design for Frequency Compensation in TCXO

This paper presents the design of a cubic function generator for frequency compensation in TCXO. It includes circuit designs for cubic term voltage conversion at low and high temperatures, cubic wave temperature sensor, voltage multiplier, and temperature stability analysis. The technology used is TSMC 0.35 μm, with a 3.3-volt single supply and a power draw of 22 mW. Future plans involve TCXO implementation, temperature sensors, VCXO, and a programmable resistor bank.

briancooper
Download Presentation

Cubic Function Generator Design for Frequency Compensation in TCXO

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CSE598A/EE597G Spring 2006 Cubic Function Generator Design Boram Lee, Jaehyun Lim Department of Computer Science and Engineering The Pennsylvania State University

  2. Uncompensated crystal frequency Frequency / Voltage T Compensated frequency of TCXO Compensating voltage Cubic Function Generator • Application • frequency compensation in TCXO

  3. Cubic Function Generator • Design I Cubic Functional Voltage Generator cubic term voltage conversion circuit (Low Temperature) cubic term voltage conversion circuit (High Temperature) Cubic Wave Temperature sensor ∑ linear term voltage conversion circuit

  4. out out Vg T T Vg out T out T Cubic Function Generator • Design I

  5. Cubic Function Generator • Design I out out out T T T <low temperature> <high temperature> <linear term> out <pseudo cubic wave> T

  6. Cubic Function Generator • Design I

  7. Cubic Function Generator • Design II linear linear input square cubic wave cube

  8. Cubic Function Generator • Design II – voltage multiplier

  9. Cubic Function Generator • Design II – multiplier simulation result

  10. Cubic Function Generator • Design II – cubic function generator

  11. Cubic Function Generator • Design II – cubic function generator layout voltage adder and amplifier voltage multipliers

  12. Cubic Function Generator • Design II – cubic function generator simulation results constant linear coefficient , various 3rd order coefficients

  13. Cubic Function Generator • Design II – cubic function generator simulation results various linear coefficient , constant 3rd order coefficients

  14. Cubic Function Generator • Design II – temperature stability 2.4 100 °C 1.6 1.2 0.8 0.4 -20 °C 2.0 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 -20 to 100°C temperature sweep

  15. Cubic Function Generator • Design II – temperature stability 2.0 1.5 1.0 1.4 1.5 1.6 1.7 1.8 1.9 2.0 after input adjustment

  16. Cubic Function Generator • Design II – design summary • technology : TSMC 0.35 μm • supply : 3.3 volt single supply • core size : 97.3 μm X 111.6 μm • input range : 1.3 ~ 2.0 V • power : 22 mW

  17. Cubic Function Generator • Future Plan and Suggestion • Full TCXO implementation and fabrication • temperature sensor • VCXO • programmable resistor bank

More Related