2013
DOI: 10.1587/elex.10.20120641
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All switched-capacitor realized piezoresistive pressure sensor interface chip for automotive TPMS

Abstract: An all switched-capacitor structure realized piezoresistive pressure sensor interface chip for automotive tire pressure monitoring system is presented. The propose integrated circuit consists of high resolution incremental ADC, low noise switched-capacitor amplifier, high accuracy bangdap reference and low-power relaxation oscillator and other related blocks. Proposed structure was implemented in standard 0.35 µm CMOS process with an area of 6.1 mm 2 . The experimental results show that the signal conditioning… Show more

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Cited by 3 publications
(2 citation statements)
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“…All switches are controlled by digital systems. The PGA provides full calibration for the sensor's inherent temperature drift and nonlinearity, and supports multiple temperature sensing methods [9,10]. The transfer function is shown in Eq.…”
Section: Analog Front Endmentioning
confidence: 99%
“…All switches are controlled by digital systems. The PGA provides full calibration for the sensor's inherent temperature drift and nonlinearity, and supports multiple temperature sensing methods [9,10]. The transfer function is shown in Eq.…”
Section: Analog Front Endmentioning
confidence: 99%
“…This corresponds to a change of 24mV for a full Wheatstone Bridge sensor with a supply voltage of 1.2V. Hence, this change of voltage will often be amplified and converted into digital code for transmission to permit ease of maintaining signal fidelity [3]- [7]. Another way of maintaining signal fidelity is to convert this voltage signal into frequency domain signal [8]- [13].…”
Section: Introductionmentioning
confidence: 99%