一种用于温补晶振的EEPROM修调电路设计_沈红莉.pdf

28 6 Vol. 28 No. 6 2011 6 MICROELECTRONICS COMPU TER June 2011 EEPROM 沈红莉, 徐静平, 钟德刚, 雷青松 ( , 4300 4) : 设计了 一种用于温度补偿晶体振荡器( T CXO) 的数字 调电可擦除只读存储器( EEPROM) 电路. 该电路 具有正常工作模式和RAM WRITEEEPROM WRIT EEEPROM READ 三种测试模式, 用于T CXO 中模拟补偿 电压的 调. 在SMIC 0. 35m 工艺下, 采用H SPICE 工具对设计的电路进行了仿真与验证, 结果表明该电路具有 可靠性高和功耗低的优点. : T CXO; 调电路; EEPROM 寄存器 : T N4 : A : 1000- 180(2011) 06- 0100- 05 Design of the EEPROM Trimming Circuit for the Temperature Compensated Crystal Oscillator SHEN H ongli, XU Jingping, ZHONG Degang, LEI Qingsong ( Dept. of Electronic Science and Technology, H uazhong Univ . of Sci. T ech. , Wuhan 4300 4, China) Abstract: The digital trimming Electric Erase Programmable Read Only Memory( EEPROM ) circuit is designed in the T emperature Compensated Crystal Oscillator(T CXO) . It has t he operational mode and three t est modes- RAM WRIT E, EEPROM WRIT E and EEPROM READ, used for trimming the analog compensation voltage in the T CXO. The circuit is simulated and validated in 0. 35 m SMIC technology w ith H SPICE, and the results show it has high reliability and low power consumption. Key words: T CXO; trimming circuit ; EEPROM register EEPROM , 1 . (T CXO) 2 T CXO ( 0. 1ppm~ 1ppm) , 2. 1 T CXO , T CXO [ 1] . : TCXO . , , , ; , , . , , T CXO T CXO [ 2] . . [ 3] T CXO , : 2010- 06