Title :
A translinear current-mode programmable analog exponential function synthesizer
Author :
Abuelma´atti, Muhammad Taher
Author_Institution :
King Fahd Univ. of Pet. & Miner., Dhahran, Saudi Arabia
Abstract :
A new circuit configuration is presented for synthesis of analog exponential functions. The proposed circuit is based on approximating the exponential function using rational functions. The circuit is flexible and can synthesize any exponential function, to any degree of accuracy, once its rational-function approximation is obtained. The proposed circuit uses only bipolar transistors and current-sources and is, therefore, very attractive for integration. SPICE simulation results are included.
Keywords :
SPICE; bipolar analogue integrated circuits; bipolar transistors; circuit simulation; constant current sources; current-mode circuits; function approximation; function generators; programmable circuits; rational functions; SPICE simulation; analog exponential function synthesis; analog exponential functions; bipolar transistors; circuit configuration; circuit flexibility; circuit integration; current-sources; exponential function approximation; exponential function synthesis; rational functions; rational-function approximation; translinear current-mode programmable analog exponential function synthesizer; Circuit simulation; Circuit synthesis; DH-HEMTs; Error correction; Flexible printed circuits; Minerals; Petroleum; Synthesizers; Temperature dependence; Voltage;
Conference_Titel :
Microelectronics, 1999. ICM '99. The Eleventh International Conference on
Print_ISBN :
0-7803-6643-3
DOI :
10.1109/ICM.2000.884842
