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2016•Unpublished venueRequires access

A DC to 10.1 GHz, 31 dB gain range control, digital programmable gain amplifier

Xuan-Quang Du, Anselm Knobloch, Markus Grözing, Matthias Buck, Manfred Berroth

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Abstract

A fully-differential, digital programmable gain amplifier (PGA) with a gain control range of 31 dB and step size of 1 dB is presented. The chip is fabricated in a 0.13 μm BiCMOS technology and consumes 284 mW. At a maximum gain of 25 dB, the PGA exhibits a 3-dB bandwidth of 10.1 GHz. The measured gain error for all 32 possible gain settings is between -0.19/+0.46 dB at 1 GHz. Up to 13 GHz the third harmonic distortion HD3stays below -34 dB for all 32 gain settings at a differential output peak-to-peak voltage of 1 V after the last amplifier stage.

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What this paper is about

A fully-differential, digital programmable gain amplifier (PGA) with a gain control range of 31 dB and step size of 1 dB is presented. The chip is fabricated in a 0.13 μm BiCMOS technology and consumes 284 mW. At a maximum gain of 25 dB, the PGA exhibits a 3-dB bandwidth of 10.1 GHz. The measured gain error for all 32 possible gain settings is between -0.19/+0.46 dB at 1 GHz. Up to 13 GHz the third harmonic distortion HD3stays below -34 dB for all 32 gain settings at a differential output peak-to-peak voltage of 1 V after the last amplifier stage.

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Available abstract

A fully-differential, digital programmable gain amplifier (PGA) with a gain control range of 31 dB and step size of 1 dB is presented. The chip is fabricated in a 0.13 μm BiCMOS technology and consumes 284 mW. At a maximum gain of 25 dB, the PGA exhibits a 3-dB bandwidth of 10.1 GHz. The measured gain error for all 32 possible gain settings is between -0.19/+0.46 dB at 1 GHz. Up to 13 GHz the third harmonic distortion HD3stays below -34 dB for all 32 gain settings at a differential output peak-to-peak voltage of 1 V after the last amplifier stage.

Key concepts: Automatic gain control, Programmable-gain amplifier, Fully differential amplifier, Open-loop gain, Variable-gain amplifier, Amplifier, Electrical engineering, BiCMOS

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