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介紹 SIGMA-DELTA 基本理論
5 d+ w( R( b2 a* Y& S+ @- V5 C2 fSIGMA-DELTA (SD) MEASUREMENT ADCS
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' k8 I G9 s; C: k% V Low Cost, High Resolution (to 24-bits) Excellent DNL,
5 {. T; Z0 ]- {0 A8 @ Low Power, but Limited Bandwidth, y5 l; `' Q# d. D
Key Concepts are Simple, but Math is Complex
! X/ q6 o+ \+ z6 \9 S Oversampling# d! L4 ^. h9 ~& [
Quantization Noise Shaping1 ~2 x& ?4 X6 D& _' i+ j
Digital Filtering
& g% b! ~0 u3 C$ x( C, J Decimation/ d7 l5 y1 M/ K5 p: b
Ideal for Sensor Signal Conditioning
8 K8 a f) L( u7 D; x High Resolution, W: [' a2 y9 T( m$ `: Y- E
Self, System, and Auto Calibration Modes
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