An ultralow-power switched opamp-based 10-b integrated ADC for implantable biomedical applications

被引:22
作者
Bonfini, G [1 ]
Brogna, AS
Garbossa, C
Colombini, L
Bacci, M
Chicca, S
Bigongiari, F
Guerrini, NC
Ferri, G
机构
[1] Univ Pisa, Dipartimento Ingn Informaz, I-56122 Pisa, Italy
[2] CAEN SpA, Aurelia Microelect SpA, I-56023 Navachio, PI, Italy
[3] Univ Aquila, Dipartimento Ingn Elettr, I-67040 Laquila, Italy
关键词
analog-to-digital converter (ADC); biomedical applications; low-power; switched-opamp;
D O I
10.1109/TCSI.2003.821310
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
This paper describes an ultralow-power switched opamp-based integrated analog-to-digital converter (ADC) for cardiac pacemakers applications. The ADC consumption, measured on 10 chip samples and averaged, is 8.18 muW (stand-by value: 1 nW) for the analog part and of 9.71 muW (5 nW) for the digital one, using a supply battery of 2.8 V. The converter has a resolution of 10-b, its typical operating clock frequency is 32 KHz (2.9 KS/s sampling rate) and is able to reach the same resolution at 2 V (0.7 KS/s sampling rate), with a dissipation of I muW and 1.3 muW for analog and digital part, respectively.
引用
收藏
页码:174 / 178
页数:5
相关论文
共 11 条
[1]  
[Anonymous], IEEE J SOLID STATE C
[2]  
[Anonymous], P EUR SOL STAT CIRC
[3]   DESIGN STRATEGY FOR LOW-VOLTAGE SC CIRCUITS [J].
BASCHIROTTO, A ;
CASTELLO, R ;
MONTECCHI, F .
ELECTRONICS LETTERS, 1994, 30 (05) :378-380
[4]  
BASCHIROTTO A, 1997, P INT SOL STAT CIRC, P58
[5]   SWITCHED-OPAMP - AN APPROACH TO REALIZE FULL CMOS SWITCHED-CAPACITOR CIRCUITS AT VERY-LOW POWER-SUPPLY VOLTAGES [J].
CROLS, J ;
STEYAERT, M .
IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1994, 29 (08) :936-942
[6]   Low-voltage rail-to-rail switched buffer topologies [J].
Ferri, G ;
Baschirotto, A .
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS, 2001, 29 (04) :413-422
[7]  
FERRI G, 1998, P ICECS LISB, P45
[8]  
GEROSA A, 2000, P ISPLED 2000 RAP IT, P386
[9]   A CMOS 13-B CYCLIC RSD A/D CONVERTER [J].
GINETTI, B ;
JESPERS, PGA ;
VANDEMEULEBROECKE, A .
IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1992, 27 (07) :957-965
[10]   900mV differential class AB OTA for switched opamp applications [J].
Peluso, V ;
Vancorenland, P ;
Steyaert, M ;
Sansen, W .
ELECTRONICS LETTERS, 1997, 33 (17) :1455-1456