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Journal Articles Cryogenics Year : 2009

Fixed-gain CMOS differential amplifiers with no external feedback for a wide temperature

Abstract

We present original CMOS amplifiers designed for the DC to 10 MHz frequency range and operating in the 70-380 K temperature range. Aimed applications concern readout circuitry to be associated with THz bolometric pixels (either high-Tc superconducting or uncooled semiconducting), which require accuracy, low noise and low power consumption. Two designs are described that both exhibit high fixed-gain (40 dB) in a feedback-free architecture, which is based on a new low-transconductance composite transistor for an accurate control of this gain. Both amplifiers have been realized in a regular 0.35 lm CMOS process and tested in the 4.2-380 K temperature range, exhibiting good agreement between designed and measured characteristics

Dates and versions

hal-00568063 , version 1 (22-02-2011)

Identifiers

Cite

Vratislav Michal, Geoffroy Klisnick, Gérard Sou, Michel Redon, Alain Kreisler, et al.. Fixed-gain CMOS differential amplifiers with no external feedback for a wide temperature. Cryogenics, 2009, 49 (11), pp.615 - 619. ⟨10.1016/j.cryogenics.2008.12.014⟩. ⟨hal-00568063⟩
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