Sampled analog filtering using switched capacitors as resistor equivalents

Caves, J.T.; Rosenbaum, S.D.; Copeland, M.A.; Rahim, C.F.

doi:10.1109/jssc.1977.1050966

Cited by 134 publications

(16 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the contrary, the switched capacitor (SC) technology enables analogue signal processing without using any A/D and D/A conversion circuits, and has been mainly applied to the filters with low frequencies, such as a few hundred kHz [3]- [5]. Especially, the CMOS SC technology has promising use in video signal bandwidth circuits, because, by using the technology, one can easily integrate complicated systems into a single chip IC at low cost.…”

Section: Introductionmentioning

confidence: 99%

A High-Speed CMOS OP Amplifier with a Dynamic Switching Bias Circuit

Wakaumi

2013

SICE Journal of Control, Measurement, and System Integration

View full text Add to dashboard Cite

: This paper presents a high-speed CMOS operational amplifier (OP Amp) with a dynamic switching bias circuit, capable of processing video signals of over 2 MHz with decreased dissipated power. The OP Amp was designed to operate at a 10 MHz dynamic switching rate, and was shown in simulations to have a dissipated power of 66 % of conventional continuous operation. This OP Amp was applied to a switched capacitor (SC) non-inverting amplifier with a gain of 2, and its high-speed 10 MHz dynamic switching operation, capable of processing video signals, was demonstrated. By increasing the switching duty ratio to 70 %, its power dissipation decreased to 56 % of normal operation. Some inaccuracy in the SC amplifier performance resulted mainly from the limited open loop gain of the OP Amp. This circuit configuration should be extremely useful in realizing low-power wide-band signal processing ICs.

show abstract

Section: Introductionmentioning

confidence: 99%

A High-Speed CMOS OP Amplifier with a Dynamic Switching Bias Circuit

Wakaumi

2013

SICE Journal of Control, Measurement, and System Integration

View full text Add to dashboard Cite

show abstract

“…The most popular approach for realizing analog signal processing in MOS (or BICMOS) integrated circuits is through the use of switched-capacitor circuits [1][2][3][4] . A switched-capacitor circuit operates as a discrete-time signal processor.…”

Section: Introductionmentioning

confidence: 99%

A Novel High Stop Band All Complementary MOSFET Switched-Capacitor Filter

Abdallah¹,

Nabhan²

2009

American J. of Engineering and Applied Sciences

View full text Add to dashboard Cite

Problem statement: Filters are widely used in various applications including communications, electronics and biomedical engineering. The performance and size of the filter is of interest especially in chip implementation. A switched-capacitor low-pass filter was designed and simulated using a 0.18 µm 1P6M CMOS technology. Approach: This circuit design offered obvious advantages in increasing the stopband attenuation, reducing passband ripple and achieving accurate frequency response. Results: This circuit achieved 53 dB stop band attenuation, less than 0.1 dB passband ripple, a 5 KHz cut-off frequency, a 100 KHz stopband frequency and consumes 6 mW from a 2 V power supply. Conclusion: The proposed design is very suitable for the realization of analog signal processing blocks in complementary MOSFET integrated circuits.

show abstract

“…These equivalents were derived from their analogue counterparts' by replacing resistors with SC resistor equivalents. [3][4][5] The drawback of these circuits is that they are parasitic-sensitive, although they incorporate a large number of amplifiers. The work on SC filters that followed is based on the concept of 'port adaptors' borrowed from the digital domain.…”

Section: Introductionmentioning

confidence: 99%

Sc filters based on scattering parameters

Limperis

Haritantis

1989

Circuit Theory & Apps

View full text Add to dashboard Cite

SUMMARYA systematic method for the simulation of LC ladders and unit-element filters by means of switched capacitor (SC) circuits is proposed. The method is based on the use of wave equivalents of various two-port subnetworks which are now realized by the same type of SC symmetric subcircuits. These subcircuits serve as the structural unit-blocks for realizing high-order circuits. Parasitic-free circuits of practical interest can be developed. Examples of high-order circuits are given. This wave method is simple in its concept and also in the circuit design. Through the alternative solutions which are described, the flexiblity of the method is demonstrated.

show abstract

Sampled analog filtering using switched capacitors as resistor equivalents

Cited by 134 publications

References 7 publications

A High-Speed CMOS OP Amplifier with a Dynamic Switching Bias Circuit

A High-Speed CMOS OP Amplifier with a Dynamic Switching Bias Circuit

A Novel High Stop Band All Complementary MOSFET Switched-Capacitor Filter

Sc filters based on scattering parameters

Contact Info

Product

Resources

About