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介紹 SIGMA-DELTA 基本理論8 w a h1 I2 s; |
SIGMA-DELTA (SD) MEASUREMENT ADCS
0 h% X! ]& a' jSIGMA-DELTA ADCs3 E9 c; G7 m& t% y& o$ p [+ e
Low Cost, High Resolution (to 24-bits) Excellent DNL,
* ~$ i2 n0 G# Q% Q! G Low Power, but Limited Bandwidth0 I# Y, g" Q% C; N
Key Concepts are Simple, but Math is Complex
; E' P2 Z% h* p; ]/ p Oversampling" w3 u+ Z- Z2 p
Quantization Noise Shaping0 ?/ a& h" T0 E x" Y" s
Digital Filtering8 q" T/ G+ J1 D5 u0 e( {+ h. `: u
Decimation
4 @7 ^2 p! Q9 `; B Ideal for Sensor Signal Conditioning
* c- x6 N! D4 Y- o3 { High Resolution( a6 y4 q' L! H, H1 W0 f
Self, System, and Auto Calibration Modes. X/ A5 s3 C9 q! X8 b& W+ z
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