血液分析议
The Blood analysis signal chain consists of a stimulus generator, data acquisition system and DSP. When virus strain enters the blood a chemical reaction occurs altering its impedance at certain frequencies. Characterizing across frequency bands by injecting a stimulus via a low impedance probe, analyzing the response signal and using a DSP algorithm to calculate the effective impedance allows specific virus strains to be detected.
应用笔记
- AN-876 : Replacing Nationals LM75 with the Analog Devices, Inc. ADT75
(pdf, 107 kB)
- AN-849 : Using Op Amps as Comparators
(pdf, 117 kB)
- AN-803 : Pin Compatible High Speed ADCs Simplify Design Tasks
(pdf, 356 kB)
- AN-741 : Little Known Characteristics of Phase Noise
(pdf, 1679 kB)
- AN-740 : iCoupler® Isolation in RS-232 Applications
(pdf, 716 kB)
- AN-715 : A First Approach to IBIS Models: What They Are and How They Are Generated
(pdf, 370 kB)
- AN-594 : Modifying the Input Voltage Range of the AD7663, AD7665 or AD7671 PulSAR 16-Bit ADCs
(pdf, 141 kB)
These ADCs handle other input voltage ranges not described in the data sheet.- PulSAR® Input Range Software (zip, 13056 kB)
(zip, 13,369,673 bytes)
- PulSAR® Input Range Software (zip, 13056 kB)
- AN-586 : LVDS Outputs for High Speed A/D Converters
(pdf, 207 kB)
High Speed ADCs Uses LVDS (Low-Voltage Differential Signaling) to Minimize Performance Limitations In ADC Applications When Providing High Speed Data Output - AN-501 : Aperture Uncertainty and ADC System Performance
(pdf, 227 kB)
A Key Concern in IF Sampling is that of Aperture Uncertainty (Jitter) - AN-345 : Grounding for Low-and-High-Frequency Circuits
(pdf, 455 kB)
Know Your Ground and Signal Paths for Effective Designs. Current Flow Seeks Path of Least Impedance-Not Just Resistance.... - AN-282 : Fundamentals of Sampled Data Systems
(pdf, 2131 kB)
- AN-138 : SPICE-Compatible Op Amp Macro-Models
(pdf, 838 kB)
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技术文章
- Capacitive Sensors Can Replace Mechanical Switches for Touch Control
by Wayne Palmer (Mobile Handset DesignLine, 5/1/2006) - Circuit Suggestions Using Features and Functionality of New Sigma-Delta ADCs
- Impedance Measurement Blood Analysis Systems
- Isolation in Medical Applications
(pdf)
by Rich Ghiorse and Steve Ranta, Analog Devices, Inc. (Power Electronics-Europe, 7/2005)