Characterization and Noise Analysis of a 12-bit Current Steering Digital-to-Analog Converter

Lahoz, T.; Barajas, E.; González, José

doi:10.1109/iscas.2005.1464560

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…In addition, for high frequencies, the finite output impedance of the DAC current sources starts to decrease, making the circuit more non-linear [11,12]. In fact, the stimulus frequency for ending nerves varying from 1 KHz to 16KHz, so the obtained results confirm our design constraint specification and offer a linearity of the circuit for a bandwidth around 25KHz.…”

Section: B Dynamic Characterizationsupporting

confidence: 59%

A programmable 9-bit current sources design dedicated to cochlear implant

Rekik

Shabou

BenHamida

et al. 2008

2008 15th IEEE International Conference on Electronics, Circuits and Systems

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This paper presents a programmable 9-bits current source design for micro-stimulator dedicated to cochlear implant. Such architecture requires a current source permitting to generate bidirectional current multiform. Besides, thanks to a programmable module, flexibility was provided in stimulus generation. In fact, the hearing threshold could be determined, using 3-bits DAC in order to fix the maximum comfortable stimulation, then the stimulation current pulses could be controlled in amplitude, using a 6-bits thermometer DAC, as well as in width. These parameters permit to modulate the charge quantity to be injected later in the cochlea nerve endings. The current sources of the 6-bits DAC have been sized to guaranty low power consumption, a low silicon occupation and an INL of less than 0.4 LSB and a DNL of less than 0.08 LSB. The maximum output providing is about 1mA of full scale current at each output from 3.3V supply, when the output is terminated on 1KΩ loads.I.

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Section: B Dynamic Characterizationsupporting

confidence: 59%