Design of a high voltage fully differential driver for a double axis scanning micromirror

Volpi, Emilio; Fanucci, Luca; D'Ascoli, Francesco

doi:10.1109/rme.2009.5201315

Cited by 3 publications

(5 citation statements)

References 5 publications

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“…The DAC is used in an integrated laser projection system [17] that can be used in high volume applications such as automotive head-up display, display projection of handheld devices (mobile phones, PDA) and projection of virtual keyboards. The converter is used to drive a high voltage fully-differential amplifier [18]. This amplifier actuates a MEMS micromirror, by means of an electrostatic comb-drive, as shown in Fig.…”

Section: Segmented Architecturesmentioning

confidence: 99%

High-level modeling of resistor string based digital-to-analog converters

Saponara

Baldetti

Fanucci

et al. 2010

Analog Integr Circ Sig Process

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To obtain a high performance CMOS resistor string digital-to-analog converter (DAC), one of the key design issues is the mismatch in the resistor ratio. This mismatch causes nonlinearity errors such as integral nonlinearity (INL) and differential nonlinearity (DNL), degrading the performances of the converter. Usually these matching properties are taken into account during the design phase by using time consuming and computational intensive transistor-level Monte Carlo simulations for the process technology corner. Recent research aims at reducing the design time by exploiting high-level modeling of converters as a trade-off between simulation time and modelling accuracy. In this work an analytical model for resistor mismatch in DACs is presented and implemented in MATLAB (TM) environment. The model utilizes geometrical size of resistors and statistical data of the technology process. Starting from random process variations on geometries it was possible to estimate DNL and INL with very short time simulations. The proposed model is valid both for single stage resistor string DACs or segmented ones. The model can be used to speed up the design of resistor-string based DACs, or as a starting point to develop more accurate models by taking into account high-order effects. The model was successfully used to design a 10bit resistor string DAC in a 0.18 mu m BCD technology with DNL and INL lower than 1 LSB (in absolute value). Since the complexity of the DAC is dominated by the resistor string, its optimization since the early design steps, enabled by the proposed high-level model, allowed to minimize area versus state of the art

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Section: Segmented Architecturesmentioning

confidence: 99%

High-level modeling of resistor string based digital-to-analog converters

Saponara

Baldetti

Fanucci

et al. 2010

Analog Integr Circ Sig Process

Self Cite

View full text Add to dashboard Cite

show abstract

“…Finally, it is worth noting that differently from other biasing options considered in [13] (such as using a nonnull constant low-voltage value ζ, different from Vb, to supply the moveable fingers) the scheme in Figure 2 simplifies the actuation electronics.…”

Section: Digital-input Actuation Schemementioning

confidence: 99%

“…The proposed innovative driving principle is implemented by a driving interface, fully integrated in BCD technology, whose architecture is sketched in Figure 2. It is composed by the analog-input HV fully differential driver we presented in [13] together with the DAC whose design is detailed in Sections 3 and 4. Particularly from the MOEMS transducer driving specification two equal 10-bit DACs have to be used to generate the V 1 and V 2 stimulating waves that are separately buffered and amplified to the required voltage range by the HV driver.…”

Section: Digital-input Actuation Schemementioning

confidence: 99%

“…The HV driver, whose circuit details and BCD implementation results are presented in [13], is basically an inverting fully differential amplifier. The input stage of the HV driver has a 1.8 V supply (being compliant with input signals up to 1,024 V coming from the 10-bit DAC) while the output stage is connected to the two fixed fingers of one axis and has a 25 V supply.…”

Section: Digital-input Actuation Schemementioning

confidence: 99%

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A Cost-Effective 10-Bit D/A Converter for Digital-Input MOEMS Micromirror Actuation

2010

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The design of a 10-bit resistor-string digital-to-analog converter (DAC) for MOEMS micromirror interfacing is addressed in this paper. The proposed DAC, realized in a 0.18-μm BCD technology, features a folded resistor-string stage with a switch matrix and address decoders plus an output voltage buffer stage. The proposed DAC and buffer circuitry are key elements of an innovative scanning micromirror actuator, characterized by direct digital input, full differential driving, and linear response. With respect to the the state-of-the-art resistor-string converters in similar technologies, the proposed DAC has comparable nonlinearity (INL, DNL) performances while it has the advantage of a smaller area occupation, 0.17 mm2, including output buffer, and relatively low-power consumption, 200 μW at 500 kSPS and few μW in idle mode.

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“…As compared with the BJT technology, the CMOS process can be achieved a high complexity at same area by using pMOS and nMOS devices to accomplish a driver chip [1][2][3][4][5][6][7][8]. The TSMC 0.6um CMOS process has been used to develop a high-current driving chip in this work, and the supply voltage is a 5V bias, meanwhile, this circuit will have an 8 ohm loading.…”

Section: Introductionmentioning

confidence: 99%

Design of Three-Phase CDROM Motor Driver Chip by Using a 0.6um CMOS Process

Chen

2012

AMM

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This paper deals with the design and analysis of a three-phase CDROM motor driver chip using a 0.6um CMOS process. An analysis of this circuits system, it is found that the driving current can be up to 500mA as in the three-phase DC motor operation. In the CMOS process, a lot of component, i.e., control and power circuits are integrated in the same chip. Here, we will focus on the design of high-current driver part and present the results obtained from the motor operating at different situations.

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Design of a high voltage fully differential driver for a double axis scanning micromirror

Cited by 3 publications

References 5 publications

High-level modeling of resistor string based digital-to-analog converters

High-level modeling of resistor string based digital-to-analog converters

A Cost-Effective 10-Bit D/A Converter for Digital-Input MOEMS Micromirror Actuation

Design of Three-Phase CDROM Motor Driver Chip by Using a 0.6um CMOS Process

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