A monolithic analog video comb filter in 1.2- mu m CMOS

Nishimura, K.A.; Gray, P.R.

doi:10.1109/4.262007

Cited by 30 publications

(10 citation statements)

References 11 publications

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“…The ARAM based 2-D FIR structures are reminiscent of the architectures of general purpose DSP devices, characterized by a data storage section (typically a RAM) and a CPU section. Examples of ARAM's suited to the proposed 2-D SC FIR architecture are proposed in [7], [19], and [20]. The main characteristics of these circuits and their possible application to the proposed system are discussed in the next session.…”

Section: A General Architecturementioning

confidence: 98%

2D video rate SC FIR filters based on analog RAMs

Gerosa

Cortelazzo

Basçhirotto

et al. 1999

IEEE Trans. Circuits Syst. II

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Monolithic CMOS analog implementations of video systems are extremely attractive because of their low area and power requirements. Switched-capacitor circuits may advantageously replace many current digital solutions of video systems. However, special care must be used in order to handle, with standard CMOS technology, the problems related to the broadband characteristics of video systems. Moreover, two-dimensional (2-D) filters require long delay lines, which are not easily implementable in the analog domain. Therefore, new design solutions must be developed, such as the architecture based on analog random-access memories for 2-D video-rate switched-capacitor finite-impulse response (FIR) filters, proposed in this work. This structure can be optimized with respect to area requirements and precision requirements, because it allows the exploiting of impulse-response symmetries of linear-phase FIR filters. The characteristics and the feasibility of the proposed design solution are demonstrated in the design of a 2-D low-pass filter for picture-in-picture resizing.

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Section: A General Architecturementioning

confidence: 98%

2D video rate SC FIR filters based on analog RAMs

Gerosa

Cortelazzo

Basçhirotto

et al. 1999

IEEE Trans. Circuits Syst. II

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show abstract

“…Furthermore, methods have been proposed to improve the bandwidth and gain of the SITO such as the use of a wide-band voltage preamplifier stage [2], [27]. Typically, such a preamplifier boosts the input signal by a factor of about 2, depending on the power supply used and the size of the signal to be processed.…”

Section: A Conventional Approach: Single-input Telescopic Otamentioning

confidence: 99%

“…One of the problems often quoted with regard to the SITO is the required shift in common-mode level between input and output [2], [24], [27]. Considering the -input SITO illustrated in Fig.…”

Section: Amplifier Noise and Signal Rangementioning

confidence: 99%

“…Transistors of size 6/0.8 were used for those switches switching at and at the input and output voltage levels, whereas switches of only 3/0.8 were used for those switches switching at Double PMOS cascoding was used in order to balance up the output resistances looking back into the PMOS and NMOS sides. The biasing of all of the cascodes was implemented using a form of replica biasing [2]. The reference voltages and were chosen as 3 and 1.2 V, respectively.…”

Section: Sc Bpf Amplifiermentioning

confidence: 99%

“…A switched-capacitor common-mode feedback (CMFB) has been adopted for the DITO [2], [29], as depicted in Fig. 10.…”

Section: E Common-mode Feedbackmentioning

confidence: 99%

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