血壓可通過不同的方法測量。一種方法是測量整個動脈收縮壓及振動幅度。當動脈壓力降低時,胳膊中的血液流量會發(fā)生變化,從而可檢測到小的壓力振蕩。系統(tǒng)僅需一個傳感器即可測量出血壓。該方案通過增益模塊、有源濾波器及由處理器控制的精密ADC實現(xiàn)。
Application Notes
AN-793: ESD/Latch-Up Considerations with iCoupler® Isolation Products (pdf, 252,700 bytes)
AN-766: Using the Noise Reduction Feature on the AD7877 (pdf, 418,929 bytes)
AN-753: Configuring the AD7877 (pdf, 253,382 bytes)
AN-724: ADuC702x Serial Download Protocol (pdf, 154,552 bytes)
AN-594: Modifying the Input Voltage Range of the AD7663, AD7665 or AD7671 PulSAR 16-Bit ADCs (pdf, 144,707 bytes)
These ADPulSAR® Input Range Software
(zip, 13,369,673 bytes) Cs handle other input voltage ranges not described in the data sheet.
AN-588: AD7416/AD7417/AD7418 Power-On Reset Circuit (pdf, 30,326 bytes)
If a large number of decoupling capacitors are used on the VDD line, re-applying power before VDD has discharged to 0 V can cause the AD7416/AD7417/AD7418 to reset into an unknown. state.
AN-577: Layout and Grounding Recommendations for Touch Screen Digitizers (pdf, 53,905 bytes)
AN-573: OP07 Is Still Evolving (pdf, 159,635 bytes)
AN-561: AD7416 Connects to the PIC16F84 via Emulated I²C™ Interface (pdf, 75,851 bytes)
AN-138: SPICE-Compatible Op Amp Macro-Models (pdf, 858,957 bytes)
AN-117: OP-42 Advanced SPICE Macro-Model (pdf, 172,274 bytes)
AB-3: Digital Nulling of Precision Op Amps (pdf, 64,744 bytes)
AN-726: Triple-Supply Power-Good Indication with the ADM108x (pdf, 77,150 bytes)
1.AMP
i.Precision Dual-Supply Op Amp
OP183
AD820
ii.Precision Single-Supply Op Amp
AD8009
AD8655
iii.Instrumentation Amplifiers
AD522
AD8202
AMP03
2.AMP
i.High-Speed Low-Power Op Amp
AD8022
AD8066
ii.Precision Single-Supply Op Amp
AD8009
3.ADC
i.High-Resolution Sigma-Delta A/D
AD9870
AD7701
ii.12-14 bit Single-Supply A/D
AD7940
AD7450A
4.Isolation
i.Interface Isolation Devices
Digital Isolators
ADUM1100
ADUM2400
5.Processor
i.Blackfin Processor
6.Isolation
i.Interface Isolation Devices
Digital Isolators
ADUM1100
ADUM2400
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