Title :
An 8-GHz continuous-time /spl Sigma/-/spl Delta/ analog-digital converter in an InP-based DHBT technology
Author :
Krishnan, S. ; Scott, D. ; Urteaga, M. ; Griffith, Zach ; Yun Wei ; Dahlstrom, M. ; Parthasarathy, N. ; Rodwell, M.
Author_Institution :
Texas Instruments India Pvt. Ltd., Bangalore, India
Abstract :
An 8-GHz clock-rate second-order continuous-time /spl Sigma/-/spl Delta/ analog-digital converter achieves 57.4 dB, 51.7 dB and 40.2 dB SNR at signal sampling rates of 125 Ms/s, 250 Ms/s and 500 Ms/s, respectively. The ADC also achieves > 75 dBc of intermodulation suppression. The IC occupies a die area of 1.45mm/sup 2/, contains 76 transistors, and is fabricated in an InP-based HBT technology.
Keywords :
III-V semiconductors; bipolar integrated circuits; continuous time systems; heterojunction bipolar transistors; indium compounds; sigma-delta modulation; 8 GHz; InP; InP DHBT IC technology; continuous-time /spl Sigma/-/spl Delta/ analog-digital converter; Analog-digital conversion; Clocks; DH-HEMTs; Delay; Dielectric measurements; Heterojunction bipolar transistors; Low-frequency noise; Sampling methods; Spectral analysis; Transconductance;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Conference_Location :
Philadelphia, PA, USA
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1212552
