发酵
发表于 2025-3-23 10:20:38
Application-Driven Designs,arity is similar to that of the Wheatstone bridge sensor output, the RC frequency reference error can be mostly removed by simple offset trims to the outputs of both the RC filter and the temperature sensor. Its remaining error is less than ±400 ppm from −45 °C to 85 °C.
arsenal
发表于 2025-3-23 17:46:25
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我说不重要
发表于 2025-3-23 19:53:27
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带来的感觉
发表于 2025-3-23 23:34:43
Sensor and Readout Topologies,sensor structures are dual-R (with a resistor reference) and RC (with a capacitor reference). The former is more energy efficient, while the latter is more accurate. Among popular front-end topologies, Wien-bridge (RC) and Wheatstone bridge (dual-R) are preferred. To achieve high-resolution, they should be digitized by Delta-Sigma ADCs (ΔΣ-ADCs).
AGGER
发表于 2025-3-24 03:03:24
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Osteons
发表于 2025-3-24 10:27:46
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exercise
发表于 2025-3-24 12:20:37
Sensor and Readout Topologies,he different sensing resistors available in standard CMOS technology, silicided resistors are chosen due to their large temperature sensitivity and high stability. Apart from the sensing resistor, a reference impedance is required to convert resistance changes into digital information. Two possible
令人悲伤
发表于 2025-3-24 16:49:24
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宫殿般
发表于 2025-3-24 20:24:37
,Wheatstone Bridge–Based Temperature Sensors,cuits using instrumentation amplifiers, sensors presented in this chapter are directly readout by DAC resistors and CTΔΣ-ADCs. The first prototype uses a single-bit CTΔΣ-ADC and achieves a resolution figure-of-merit (FoM) of 65 fJ·K.. By systematically improving the design, the FoM of the fourth des
易改变
发表于 2025-3-25 01:45:36
Application-Driven Designs,th power scaling and properly-designed parallel DAC resistors, this sensor consumes only 6.6 μW, and achieves a 0.2 °C inaccuracy from 27.5 °C to 47.5 °C after an on-chip trimming, which greatly simplifies its digital backend. The second design is a sensor embedded in an RC-based frequency reference