Digitally programmable current amplifier

Prasertsom, Danucha; Photsathian, Thongchai; Tangsrirat, Worapong

doi:10.1109/ispacs.2012.6473576

Cited by 1 publication

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The development of many current followers (and current conveyors) may be traced to the following idea [4,5] (Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

“…1). Using a connection of common gate (M 1 ) and common source (M 2 ) stages one creates a negative feedback loop closed at the source of M 1 (the loop can be closed via a follower and a current [5]). The input impedance at the closing point becomes very low.…”

Section: Introductionmentioning

confidence: 99%

“…I should be matched (though the circuit in [5] does not require matching). But the main deficiency is the absence of current amplification; the input signal i I Δ could be connected directly to the point where the drain of M 3 is connected.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

On design of low-voltage CMOS current amplifiers

Filanovsky

Jarvenhaara

Tchamov

2014

2014 IEEE 57th International Midwest Symposium on Circuits and Systems (MWSCAS)

View full text Add to dashboard Cite

The paper presents a new approach to design of current amplifiers. The amplifying cell core represents the connection of three transistors: a bias transistor and a differential pair. The bias transistor sets the distribution of currents in the differential pair. When an external current signal is applied to the core input the outputs of the differential pair provide two complementary current signals. The loading of the differential pair by a current mirror provides current conversion, and, depending on the current mirror orientation, one obtains a positive or negative current amplifying stage. These stages can be directly cascaded to obtain multistage high current gain amplifier. The gain of multistage amplifier may be stabilized using an external resistive current divider or external differential pair used as current distributor. The paper considers static and dynamic characteristics of the amplifying stages, and the frequency response of the two-stage amplifier. The amplifier was designed for 45 nm CMOS technology, the simulation was done using Cadence. The results of calculations and simulations are in a reasonable agreement.Index Terms-Current amplifiers, wide-band amplifiers, multistage amplifiers, feedback amplifiers, current follower.

show abstract

“…The development of many current followers (and current conveyors) may be traced to the following idea [4,5] (Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%