A 6-GS/s 9.5-b Single-Core Pipelined Folding-Interpolating ADC With 7.3 ENOB and 52.7-dBc SFDR in the Second Nyquist Band in 0.25- $\mu$ m SiGe-BiCMOS

Buck, Matthias; Bieg, Robert; Digel, Johannes; Du, Xuan-Quang; Thomas, Philipp; Berroth, Manfred; Epp, Michael; Rauscher, J.; Schlumpp, M.

doi:10.1109/tmtt.2016.2647714

Cited by 9 publications

(1 citation statement)

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“…Currently, ADCs are predominantly designed in a CMOS process. In fact, compared with metal-oxide-semiconductor field-effect transistor (MOSFET), silicon-germanium (SiGe) heterojunction bipolar transistors (HBT) possess higher transit frequency and superior matching property [7]. In addition, due to its reliability in extreme environmental conditions and inherent tolerance to irradiation effects, it is suitable for special applications such as space exploration [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A 5GS/s 8-bit ADC with Self-Calibration in 0.18 μm SiGe BiCMOS Technology

et al. 2019

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A 5 GS/s 8-bit analog-to-digital converter (ADC) implemented in 0.18 μm SiGe BiCMOS technology has been demonstrated. The proposed ADC is based on two-channel time-interleaved architecture, and each sub-ADC employs a two-stage cascaded folding and interpolating topology of radix-4. An open loop track-and-hold amplifier with enhanced linearity is designed to meet the dynamic performance requirement. The on-chip self-calibration technique is introduced to compensate the interleaving mismatches between two sub-ADCs. Measurement results show that the spurious free dynamic range (SFDR) stays above 44.8 dB with a peak of 53.52 dB, and the effective number of bits (ENOB) is greater than 5.8 bit with a maximum of 6.97 bit up to 2.5 GS/s. The ADC exhibits a differential nonlinearity (DNL) of -0.31/+0.23 LSB (least significant bit) and an integral nonlinearity (INL) of -0.68/+0.68 LSB, respectively. The chip occupies an area of 3.9 × 3.6 mm2, consumes a total power of 2.8 W, and achieves a figure of merit (FoM) of 10 pJ/conversion step.

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Section: Introductionmentioning

confidence: 99%