An analog front-end bipolar-transistor integrated circuit for the SDC silicon tracker
- Lawrence Berkeley Lab., CA (United States)
Since 1989 the Solenoidal Detector Collaboration (SDC) has been developing a general purpose detector to be operated at the Superconducting Super Collider (SSC). A low-noise, low-power, high-bandwidth, radiation hard, silicon bipolar-transistor full-custom integrated circuit (IC) containing 64 channels of analog signal processing has been developed for the SDS silicon tracker. The IC was designed and tested at LBL and was fabricated using AT and T's CBIC-U2, 4 GHz f[sub T] complementary bipolar technology. Each channel contains the following functions: low-noise preamplification, pulse shaping and threshold discrimination. This is the first iteration of the production analog IC for the SDC silicon tracker. The IC is laid out to directly match the 50 [mu]m pitch double-sided silicon strip detector. The chip measures 6.8 mm [times] 3.1 mm and contains 3,600 transistors. Three stages of amplification provide 180 mV/fC of gain with a 35 nsec peaking time at the comparator input. For a 14 pF detector capacitance, the equivalent noise charge is 1300 el. rms at a power consumption of 1 mW/channel from a single 3.5 V supply. With the discriminator threshold set to 4 times the noise level, a 16nsec time-walk for 1.25 to 10 fC signals is achieved using a time-walk compensation network. Irradiation tests at TRIUMF to a [phi] = 10[sup 14] protons/cm[sup 2] have been performed on the JC, demonstrating the radiation hardness of the complementary bipolar process.
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6815553
- Report Number(s):
- CONF-931051-; CODEN: IETNAE; TRN: 94-023015
- Journal Information:
- IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States), Vol. 41:4Pt1; Conference: NSS-MIC '93: nuclear science symposium and medical imaging conference, San Francisco, CA (United States), 30 Oct - 6 Nov 1993; ISSN 0018-9499
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
43 PARTICLE ACCELERATORS
INTEGRATED CIRCUITS
DESIGN
READOUT SYSTEMS
SI SEMICONDUCTOR DETECTORS
SUPERCONDUCTING SUPER COLLIDER
ANALOG SYSTEMS
PARTICLE TRACKS
PERFORMANCE TESTING
RADIATION HARDENING
ELECTRONIC CIRCUITS
HARDENING
MEASURING INSTRUMENTS
MICROELECTRONIC CIRCUITS
PHYSICAL RADIATION EFFECTS
RADIATION DETECTORS
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SEMICONDUCTOR DETECTORS
STORAGE RINGS
TESTING
440104* - Radiation Instrumentation- High Energy Physics Instrumentation
430303 - Particle Accelerators- Experimental Facilities & Equipment