CMOS current follower circuits

Parnklang, Jirawath; Nanthanawanitch, W.; Titiroongruang, Wisut

doi:10.1109/tencon.1999.818597

Cited by 5 publications

(5 citation statements)

References 2 publications

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“…The two-stage differential amplifier shown in Figure 4 was used in the design of the QFG-CB, and, again, nested-Miller compensation was used to ensure stability. The second configuration considered for comparison is the Current Conveyor based Current Buffer (CC-CB) [36][37][38][39][40][41]. Figure 8 shows both the schematic circuits and the transistor sizes of the aforementioned class AB current buffers.…”

Section: Performance Characterizationmentioning

confidence: 99%

High-Linearity Self-Biased CMOS Current Buffer

et al. 2018

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A highly linear fully self-biased class AB current buffer designed in a standard 0.18 µm CMOS process with 1.8 V power supply is presented in this paper. It is a simple structure that, with a static power consumption of 48 µW, features an input resistance as low as 89 Ω, high accuracy in the input-output current ratio and total harmonic distortion (THD) figures lower than −60 dB at 30 µA amplitude signal and 1 kHz frequency. Robustness was proved through Monte Carlo and corner simulations, and finally validated through experimental measurements, showing that the proposed configuration is a suitable choice for high performance low voltage low power applications.

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Section: Performance Characterizationmentioning

confidence: 99%

High-Linearity Self-Biased CMOS Current Buffer

et al. 2018

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“…Current conveyors, current mirrors, and current followers have received much attention during recent years of electronics development [1][2][3][4][5][6][7][8][9]. Current mode amplifiers are often used in filtering applications [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…Unfortunately, such a circuit has a negative current gain. To obtain positive current gain, usually a pMOS current mirror follows a nMOS mirror [1]. Such a solution is quite simple -it only adds 2 devices.…”

Section: Introductionmentioning

confidence: 99%

Multiple output CMOS current amplifier

Pankiewicz¹

2016

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. In this paper the multiple output current amplifier basic cell is proposed. The triple output current mirror and current follower circuit are described in detail. The cell consists of a split nMOS differential pair and accompanying biasing current sources. It is suitable for low voltage operation and exhibits highly linear DC response. Through cell devices scaling, not only unity, but also any current gains are achievable. As examples, a current amplifier and bandpass biquad section designed in CMOS TSMC 90nm technology are presented. The current amplifier is powered from a 1.2V supply. MOS transistors scaling was chosen to obtain output gains equal to -2, 1 and 2. Simulated real gains are -1.941, 0.966 and 1.932 respectively. The 3dB passband obtained is above 20MHz, while current consumption is independent of input and output currents and is only 7.77µA. The bandpass biquad section utilises the previously presented amplifier, two capacitors and one resistor, and has a Q factor equal to 4 and pole frequency equal to 100 kHz.Key words: current amplifier, current follower, current mirror, CMOS technology. Multiple output CMOS current amplifier Core of current amplifier circuitProposed current mirror/follower is based on nMOS differential pair and is presented in Fig. 1

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“…To avoid both nonideal gain e®ects of the CCII, CF and VF known as unity-gain cells have become widespread for the last two decades. [2][3][4][5][6][7][8][9][10][11][12][13][14][15] The use of only CFs in a circuit can provide several good features. These features are free from frequency dependent nonideal voltage gain e®ects, wider bandwidth, higher slew-rate, lower power consumption and more simple structure.…”

Section: Introductionmentioning

confidence: 99%

“…CMOS realizations of the CFs have been given in Ref. 2. Limiter circuits composed of a single CF have been proposed in Ref.…”

Section: Introductionmentioning

confidence: 99%

Multi-Output Current Follower Based Current-Mode Universal Filter Employing Only Grounded Capacitors

Alpaslan

Yüce

2014

J CIRCUIT SYST COMP

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In this paper, a new two-input three-output second-order universal¯lter is proposed. Two multi-output voltage controlled current followers (MO-VCCFs) and two capacitors are used in the proposed¯lter. The proposed¯lter does not have external passive resistors. It has high output impedances yielding easy cascadability. It has the property of electronic tunability. It does not need any critical passive component matching conditions. Also, it is composed of only grounded capacitors; accordingly, it is suitable for integration. Theoretical knowledge is supported via SPICE simulations.

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CMOS current follower circuits

Cited by 5 publications

References 2 publications

High-Linearity Self-Biased CMOS Current Buffer

High-Linearity Self-Biased CMOS Current Buffer

Multiple output CMOS current amplifier

Multi-Output Current Follower Based Current-Mode Universal Filter Employing Only Grounded Capacitors

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