4-bit adder-accumulator at 41-GHz clock frequency in InP DHBT technology

Author

Turner, Steven Eugene ; Elder, Richard B., Jr. ; Jansen, Douglas S. ; Kotecki, David E.

Author_Institution

Univ. of Maine, Orono, ME, USA

Volume

15

Issue

3

fYear

2005

fDate

3/1/2005 12:00:00 AM

Firstpage

144

Lastpage

146

Abstract

A 41-GHz 4-b adder-accumulator test circuit implemented in InP double heterojunction bipolar transistor (DHBT) technology using 624 transistors is reported. High clock rates are obtained by combining the logic functions into pipelined latches. The adder-accumulator contains a single-level parallel-gated carry circuit that is used as a step toward reduced power consumption. The carry circuit has a maximum clock frequency of 55 GHz. The accumulator architecture employs modular, pipelined 2-b adders and is cascadable to 2 N-bits. The test circuit includes a 4-b digital to analog converter (DAC) that facilitates demonstration of high-speed operation.

Keywords

III-V semiconductors; adders; bipolar logic circuits; carry logic; clocks; digital-analogue conversion; heterojunction bipolar transistors; indium compounds; logic design; pipeline processing; 4 bits; 41 GHz; 55 GHz; DHBT technology; InP; accumulator architecture; adder-accumulator test circuit; clock frequency; digital-to-analog converter; double heterojunction bipolar transistor; frequency divider; high clock rates; high-speed integrated circuits; logic functions; pipelined latches; power consumption; single-level parallel-gated carry circuit; Bipolar transistor circuits; Circuit testing; Clocks; DH-HEMTs; Double heterojunction bipolar transistors; Energy consumption; Frequency; Indium phosphide; Latches; Logic functions; Accumulator; adder; carry; frequency divider; heterojunction bipolar transistor (HBT); high-speed integrated circuits; indium phosphide (InP);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2005.844199

Filename

1406057