A field programmable analog array for CMOS continuous-time OTA-C filter applications

被引:92
作者
Pankiewicz, B [1 ]
Wojcikowski, M
Szczepanski, S
Sun, YC
机构
[1] Gdansk Tech Univ, Fac Elect Telecommun & Informat, PL-80952 Gdansk, Poland
[2] Univ Hertfordshire, Dept Elect Commun & Elect Engn, Hatfield AL10 9AB, Herts, England
关键词
CMOS analog integrated circuits; continuous time filters; field programmable analog circuits; programmable circuits; programmable filters;
D O I
10.1109/4.982418
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A programmable high-frequency operational transconductance amplifier (OTA) is proposed and analyzed. A general configurable analog block (CAB) is presented, which consists of the proposed programmable OTA, programmable capacitor and MOSFET switches. Using the CABs, the universal tunable and field programmable analog array (FPAA) can be constructed, which can realize many signal-processing functions, including filters. A tuning circuit is also discussed. The proposed OTA has been simulated and fabricated in CMS technology. The results show that the OTA has the transconductance tunable/prograinmable in a wide range of 700 times and the - 3-dB bandwidth larger than 20 MHz. A universal 5 x 8 CAB array has been fabricated. The chip has also been configured to realize OTA-C 60-kHz and 500-kHz bandpass filters based on ladder simulation and biquad cascade.
引用
收藏
页码:125 / 136
页数:12
相关论文
共 30 条
[1]  
ANDERSON D, 1997, IEEE CUST INT CIRC C, P555
[2]   AN ELLIPTIC CONTINUOUS-TIME CMOS FILTER WITH ON-CHIP AUTOMATIC TUNING [J].
BANU, M ;
TSIVIDIS, Y .
IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1985, 20 (06) :1114-1121
[3]  
BRATT A, 1996, P ACM 4 INT S FPGA, P88
[4]  
Deliyannis T., 1999, CONTINUOUS TIME ACTI
[5]   NEW CMOS CURRENT MIRRORS WITH IMPROVED HIGH-FREQUENCY RESPONSE [J].
DICATALDO, G ;
PALUMBO, G ;
STIVALA, S .
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS, 1993, 21 (05) :443-450
[6]  
DUPUIE S, 1990, ANALOGUE IC DESIGN C
[7]   Noise in Gm-C filters [J].
Efthivoulidis, G ;
Toth, L ;
Tsividis, YP .
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL PROCESSING, 1998, 45 (03) :295-302
[8]  
EMBABI S, 1996, P IEEE 39 MIDW S CIR, V1, P151
[9]  
GAUDET VC, 1998, AS C SIGN SYST COMP, V2, P1156
[10]  
GEIGER RL, 1985, IEEE CIRCUITS DE MAR, P20