Design of a Voltage-Controlled Programmable-Gain Amplifier in 65-nm CMOS Technology

Liu, Hang; Zhu, Xi; Lu, Muting; Yeo, Kiat Seng

doi:10.1109/mwsym.2019.8700865

Cited by 3 publications

(8 citation statements)

References 10 publications

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“…1. The primary function of the LPF is to provide sufficient selectivity to attenuate out-of-band interference to a level that does not adversely impact subsequent analog-to-digital conversion and demodulation processes [26]. Following the LPF, another important building block at ABB is the programmable-gain amplifier (PGA).…”

Section: Design Considerations Of the Proposed Power-scalable Anamentioning

confidence: 99%

“…Thus, in this work, we are only concerned with a gm-C based design. To the best of our knowledge, using a system approach for a switchable-order gm-C LPF design has only been explored to some extent in the literature [26]. Most of the previously published work is primarily focused on a circuit approach, such as transistor-level operational transconductance amplifier (OTA) design [4].…”

Section: Design Of Switchable-order Lpf Using Mlf-based Approachmentioning

confidence: 99%

“…XISTING in any wireless system, analog baseband (ABB) circuits, including lowpass filters (LPFs) and programmable-gain amplifiers (PGAs), play a crucial role [1]- [26]. They are required to not only pass, but also amplify wanted signals with minimal degradation or distortion at given channels, while dramatically reject unwanted signals, such as noise, and spurious responses.…”

Section: Introductionmentioning

confidence: 99%

“…This is particularly true for many emerging applications, such as the Internet-of-things (IoTs) and wireless sensor networks (WSNs), where the energy efficiency and implementation cost are extremely constraint. Therefore, an initial generic system approach for power-scalable ABB designs with special emphasis on energy efficiency improvement was presented in [26]. Beyond the one initially presented, not only a voltage-controlled PGA (VC-PGA), but also the required switchable-order filtering solution at ABB is presented in this work.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the detailed design formulas are derived and summarized for filter implementation. Then, using the formulas, a filter design example that can switch the order between 5 th and 7 th is given along with the designed VC-PGA in [26] to provide a complete solution for reconfigurable ABB. Note that the presented approach is not designed for any specific application, but rather targets on a general scenario, in which energy efficiency and cost are critical.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Design of Reconfigurable dB-Linear Variable-Gain Amplifier and Switchable-Order $g_{m}$ -C Filter in 65-nm CMOS Technology

Liu

Zhu

et al. 2019

IEEE Trans. Microwave Theory Techn.

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A system approach for a power-scalable analog baseband (ABB) design is presented in this paper. Using this approach, the energy efficiency of an ABB can be maximized without compromising any other important specifications. To fulfill the feasibility study, a switchable-order gm-C lowpass filter (LPF) along with a voltage-controlled programmable-gain amplifier (VC-PGA) are designed. The selectivity of the LPF can be linearly scaled with power consumption. In addition, the power consumption of the VC-PGA has a binary-weighted manner. In contrast to conventional PGAs, the gain step of the designed PGA can be continuously tuned by a control voltage. To prove the concept, the ABB is implemented in 65 nm CMOS technology. The measurements show that the frequency responses of the ABB can be configured as either 5 th or 7 th order with 16 gain steps. The bandwidth is approximately 50 MHz for all cases and the gain step can be continuously tuned between 0 and 3 dB. At the high-gain mode, the output 3 rd-order intercept point (OIP3) and the input-referred noise (IRN) of the LPF and PGA are approximately to be 8 dBm and 5 nV/sqrt Hz, respectively. The maximum power consumption of the ABB, excluding the output buffer, is approximately 19.8 mW with a 1.2 V supply voltage. The die area, excluding the pads, is only 0.18 mm 2 .

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Section: Design Considerations Of the Proposed Power-scalable Anamentioning

confidence: 99%

Section: Design Of Switchable-order Lpf Using Mlf-based Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Design of Reconfigurable dB-Linear Variable-Gain Amplifier and Switchable-Order $g_{m}$ -C Filter in 65-nm CMOS Technology

Liu

Zhu

et al. 2019

IEEE Trans. Microwave Theory Techn.

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Comparative Analysis of Reconfigurable Low Pass Filter using Biquad Active, Ladder G_m-C and Multiple Loop Feedback Techniques

Mittal

Khan

Shukla³

2020

2020 9th International Conference System Modeling and Advancement in Research Trends (SMART)

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Design and implementation of a preset operational amplifier based on basic digital and analog hybrid circuit

Zhao

2024

ACE

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In the vast landscape of electronic engineering, the indispensable roles of both analog and digital circuits are unequivocally recognized. Analog circuits, with their foundational principles, are extensively harnessed in areas encompassing audio, video, power systems, and particularly, amplifiers. Conversely, digital circuits, integral to modern-day technological advancements, are dominantly present in computing platforms, telecommunication systems, control mechanisms, and data storage infrastructures. Amplifiers, a cornerstone in analog circuit designs, principally focus on magnifying the amplitude of input signals, whether it be in terms of voltage or current. This amplification process hinges on the strategic configuration of electronic elements such as transistors, resistors, and capacitors. This paper endeavors to marry the attributes of digital and analog circuits. Through the adept utilization of fundamental electronic components, an innovative amplifier design capable of preset amplification ratios is birthed. The practicality and efficacy of this amplifier are rigorously validated via its hands-on assembly and experimental testing in a laboratory setting. Results consistently underscore the amplifiers adeptness in delivering precise signal amplification, conforming to its predetermined ratios. Such a design, rooted in its simplicity yet offering profound versatility, beckons further exploration. It stands as a beacon for potential future adaptions, tailored to suit a gamut of applications, and is poised to seamlessly dovetail into more sophisticated circuit systems.

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Design of a Voltage-Controlled Programmable-Gain Amplifier in 65-nm CMOS Technology

Cited by 3 publications

References 10 publications

Design of Reconfigurable dB-Linear Variable-Gain Amplifier and Switchable-Order $g_{m}$ -C Filter in 65-nm CMOS Technology

Design of Reconfigurable dB-Linear Variable-Gain Amplifier and Switchable-Order $g_{m}$ -C Filter in 65-nm CMOS Technology

Comparative Analysis of Reconfigurable Low Pass Filter using Biquad Active, Ladder G_m-C and Multiple Loop Feedback Techniques

Design and implementation of a preset operational amplifier based on basic digital and analog hybrid circuit

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Design of a Voltage-Controlled Programmable-Gain Amplifier in 65-nm CMOS Technology

Cited by 3 publications

References 10 publications

Design of Reconfigurable dB-Linear Variable-Gain Amplifier and Switchable-Order $g_{m}$ -C Filter in 65-nm CMOS Technology

Design of Reconfigurable dB-Linear Variable-Gain Amplifier and Switchable-Order $g_{m}$ -C Filter in 65-nm CMOS Technology

Comparative Analysis of Reconfigurable Low Pass Filter using Biquad Active, Ladder Gm-C and Multiple Loop Feedback Techniques

Design and implementation of a preset operational amplifier based on basic digital and analog hybrid circuit

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Product

Resources

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Comparative Analysis of Reconfigurable Low Pass Filter using Biquad Active, Ladder G_m-C and Multiple Loop Feedback Techniques