A High-Slew Rate SiGe BiCMOS Operational Amplifier for Operation Down to Deep Cryogenic Temperatures

Krithivasan, R.; Lei, Yuan; Najafizadeh, Laleh; Zhu, Cun; Cressler, John D.; Chen, Suheng; Ulaganathan, Chandradevi; Blalock, Benjamin J.

doi:10.1109/bipol.2006.311170

Cited by 22 publications

(1 citation statement)

References 3 publications

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“…8. The high gain amplifier of the integrator is a modified version of the basic folded cascode amplifier discussed in [32][33][34] and the G m stage of the amplifier is designed with bipolar transistors as 4 10/0.28 suggested in [35]. To obtain a very low-frequency pole without affecting the high gain, the output resistance of the circuit has to be maximized.…”

Section: A Issues Of Delay Mismatch and Signal Swingmentioning

confidence: 99%

All-Analog Adaptive Equalizer for Coherent Data Center Interconnects

Nambath

Ashok

Manikandan

et al. 2020

J. Lightwave Technol.

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We present the detailed architecture of an allanalog adaptive equalizer for low-power analog signal processing based coherent optical dual-polarization quadrature phase-shift keying transceivers. The proof of concept equalizer uses the constant modulus algorithm for weight coefficient update. The equalizer, implemented in a 130 nm SiGe BiCMOS technology for 100 Gb/s operation, occupies ∼1.4 mm × 1.35 mm area and draws 1 A current from a 2.5 V supply. Its functionality is validated experimentally for data rates up to 40 Gb/s and by using postlayout circuit simulations for data rates up to 100 Gb/s. The equalizer output after processing with a behavioral Costas loopbased carrier phase recovery and compensation module shows bit error rates well within the hard-decision forward error correction limit for 40 Gb/s single-mode fiber links of length up to 10 km. Performance and power consumption of the equalizer are expected to improve when implemented in advanced CMOS or FinFET technologies. The simple architecture of the analog domain equalizer makes it suitable for analog coherent shortreach interconnects with length less than 10 km and carrier wavelengths of either 1310 nm or 1550 nm.

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Section: A Issues Of Delay Mismatch and Signal Swingmentioning

confidence: 99%