血壓可通過(guò)不同的方法測(cè)量。一種方法是測(cè)量整個(gè)動(dòng)脈收縮壓及振動(dòng)幅度。當(dāng)動(dòng)脈壓力降低時(shí),胳膊中的血液流量會(huì)發(fā)生變化,從而可檢測(cè)到小的壓力振蕩。系統(tǒng)僅需一個(gè)傳感器即可測(cè)量出血壓。該方案通過(guò)增益模塊、有源濾波器及由處理器控制的精密ADC實(shí)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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