Fully differential cryogenic transistor amplifier

Nikolay Beev; Mikko Kiviranta

doi:10.1016/j.cryogenics.2013.06.004

Fully differential cryogenic transistor amplifier

Nikolay Beev (Corresponding Author), Mikko Kiviranta

Research output: Contribution to journal › Article › Scientific › peer-review

12 Citations (Scopus)

Abstract

We have constructed a dc-coupled differential amplifier capable of operating in the 4.2 K–300 K temperature range. The amplifier can be operated at high-bias setting, where it dissipates 5 mW, has noise temperature TN ≈ 0.7 K at RS ≈ 5 kΩ and >40 MHz bandwidth at 4.2 K bath temperature. The bias setting can be adjusted: at our lowest tested setting the amplifier dissipates <100 μW, has noise temperature TN ≈ 2 K at RS ≈ 25 kΩ and >2 MHz bandwidth. The 1/f noise corner frequency is a few times 10 kHz. We foresee the amplifier to have an application in the readout of Superconducting Quantum Interference Devices (SQUIDs), Superconducting Tunnel Junction Detectors (STJs) and Transition Edge Sensors (TESes). We have verified the practical use of the amplifier by reading out a 4.2 K 480-SQUID array with 40 MHz bandwidth and <8 × 10−8 Φ0/Hz1/2 flux noise.

Original language	English
Pages (from-to)	129-133
Number of pages	4
Journal	Cryogenics
Volume	57
DOIs	https://doi.org/10.1016/j.cryogenics.2013.06.004
Publication status	Published - 2013
MoE publication type	A1 Journal article-refereed

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Keywords

low-noice apmplifier
SIGe transistors
SQUID readout

Cite this

Beev, N., & Kiviranta, M. (2013). Fully differential cryogenic transistor amplifier. Cryogenics, 57, 129-133. https://doi.org/10.1016/j.cryogenics.2013.06.004

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abstract = "We have constructed a dc-coupled differential amplifier capable of operating in the 4.2 K–300 K temperature range. The amplifier can be operated at high-bias setting, where it dissipates 5 mW, has noise temperature TN ≈ 0.7 K at RS ≈ 5 kΩ and >40 MHz bandwidth at 4.2 K bath temperature. The bias setting can be adjusted: at our lowest tested setting the amplifier dissipates <100 μW, has noise temperature TN ≈ 2 K at RS ≈ 25 kΩ and >2 MHz bandwidth. The 1/f noise corner frequency is a few times 10 kHz. We foresee the amplifier to have an application in the readout of Superconducting Quantum Interference Devices (SQUIDs), Superconducting Tunnel Junction Detectors (STJs) and Transition Edge Sensors (TESes). We have verified the practical use of the amplifier by reading out a 4.2 K 480-SQUID array with 40 MHz bandwidth and <8 × 10−8 Φ0/Hz1/2 flux noise.",

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N2 - We have constructed a dc-coupled differential amplifier capable of operating in the 4.2 K–300 K temperature range. The amplifier can be operated at high-bias setting, where it dissipates 5 mW, has noise temperature TN ≈ 0.7 K at RS ≈ 5 kΩ and >40 MHz bandwidth at 4.2 K bath temperature. The bias setting can be adjusted: at our lowest tested setting the amplifier dissipates <100 μW, has noise temperature TN ≈ 2 K at RS ≈ 25 kΩ and >2 MHz bandwidth. The 1/f noise corner frequency is a few times 10 kHz. We foresee the amplifier to have an application in the readout of Superconducting Quantum Interference Devices (SQUIDs), Superconducting Tunnel Junction Detectors (STJs) and Transition Edge Sensors (TESes). We have verified the practical use of the amplifier by reading out a 4.2 K 480-SQUID array with 40 MHz bandwidth and <8 × 10−8 Φ0/Hz1/2 flux noise.

AB - We have constructed a dc-coupled differential amplifier capable of operating in the 4.2 K–300 K temperature range. The amplifier can be operated at high-bias setting, where it dissipates 5 mW, has noise temperature TN ≈ 0.7 K at RS ≈ 5 kΩ and >40 MHz bandwidth at 4.2 K bath temperature. The bias setting can be adjusted: at our lowest tested setting the amplifier dissipates <100 μW, has noise temperature TN ≈ 2 K at RS ≈ 25 kΩ and >2 MHz bandwidth. The 1/f noise corner frequency is a few times 10 kHz. We foresee the amplifier to have an application in the readout of Superconducting Quantum Interference Devices (SQUIDs), Superconducting Tunnel Junction Detectors (STJs) and Transition Edge Sensors (TESes). We have verified the practical use of the amplifier by reading out a 4.2 K 480-SQUID array with 40 MHz bandwidth and <8 × 10−8 Φ0/Hz1/2 flux noise.

KW - low-noice apmplifier

KW - SIGe transistors

KW - SQUID readout

U2 - 10.1016/j.cryogenics.2013.06.004

DO - 10.1016/j.cryogenics.2013.06.004

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JO - Cryogenics

JF - Cryogenics

SN - 0011-2275

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Access to Document

10.1016/j.cryogenics.2013.06.004