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4
to 20 Mloop Needs No External Power Source: 09/13/2001 EDN - Design Ideas / ((added 2/05) The simple circuit in Figure 1 uses a low-current-drain MAX4073H amplifier to sense
the current flowing through a 4- to 20-mA loop. The circuit senses the current through a 1Ω resistor with a fixed gain of 100 and uses no battery or dc power supply. The low current drain of
the amplifier (0. . |
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A 4
to 20 mA loop needs no external power source: 09/13/01 EDN Design Ideas / (added 11/05) The simple circuit in Figure 1 uses a low-current-drain MAX4073H amplifier to
sense the current flowing through a 4- to 20-mA loop. The circuit senses the current through a 1Ω resistor with a fixed gain of 100 and uses no battery or dc power supply. The low current
drain of the amplifier (0. |
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A Design and Manufacturing Guide for the Lead Frame Chip Scale Package (LFCSP): AN-772 - Analog Devices Application Notes
(added 2/06) |
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A User's Guide to I.C. Instrumentation Amplifiers: AN-244 - Analog Devices Application Notes (added 2/06) |
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AC Current Monitor:
Senses high current-flow into power cables. No wire-cutting, three versions available. (circuit design added 3/05) |
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AC Line Current Detector: (circuit added 7/02) |
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Active Feedback IC Serves as Current Sensing Instrumentation Amplifier: 07/24/03 EDN Design Ideas / (Circuit /
schematic design added 6/06) High-speed current sensing presents a designer with some significant challenges. Most techniques for sensing current involve measuring the differential
voltage the current produces as it flows through a sense element, such as a resistor or a Hall-effect device. The differential voltage across the sense element is generally small and is often
riding on a common-mode voltage that is considerably ...... |
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Active feedback IC Serves as Current sensing instrumentation Amplifier: 07/24/03 EDN Design Ideas / (added 1/05) High-speed current sensing presents a designer with
some significant challenges. Most techniques for sensing current involve measuring the differential voltage the current produces as it flows through a sense element, such as a resistor or a
Hall-effect device. The differential voltage across the sense element is generally small and is often riding on a common-mode voltage that is considerably ...... |
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AN-244: A User's Guide to I.C. Instrumentation Amplifiers: AN-244 - Analog Devices Application Notes (added 2/06) |
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AN-245: Instrumentation Amplifiers Solve Unusual Design Problems: AN-245 - Analog Devices Application Notes (added
2/06) Traditionally Considered Only for Transducer-Conditioning Applications, Instrumentation Amplifiers Bring Unique Performance Benefits to a Range of Other Applications as Well. |
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AN-282: Fundamentals of Sampled Data Systems: AN-282 - Analog Devices Application Notes (added 2/06) |
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AN-345: Grounding for Low-and-High-Frequency Circuits: AN-345 - Analog Devices Application Notes (added 2/06) Know
Your Ground and Signal Paths for Effective Designs. Current Flow Seeks Path of Least Impedance-Not Just Resistance.... |
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AN35 High-Side
Current Sensing: Considerations and Applications for High-Side Current Monitoring: Zetec Semiconductors - Applications Notes - A guide for using the ZXCT range of
products. Contained within the note are application ideas for extended supply ranges, a circuit for bi-directional current sensing and an over-current/short circuit protection circuit. Now
updated and contained within AN39 (added 2/06) |
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AN39 Current
Measurement Applications Handbook: Zetec Semiconductors - Applications Notes - This applications handbook explores how the requirements affect the design for AC and DC current
measurement and the implications on cost and performance for different approaches. (added 2/06) |
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AN-539: Errors and Error Budget Analysis in Instrumentation Amplifier Applications: AN-539 - Analog Devices Application
Notes (added 2/06) Describes a systematic approach to calculating the overall error in an instrumentation amplifier application. |
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AN-589: Ways to Optimize the Performance of a Difference Amplifier: AN-589 - Analog Devices Application Notes (added
2/06) This Application Note presents several ways to build and optimize the performance of a discrete difference amplifier. It also recommends amplifiers that will make the overall solution
cost/performance competitive with monolithic instrument amplifiers. |
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AN-597: Current
Feedback Amplifiers: National Semiconductor - Application Note (added 2/06) |
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AN-671: Reducing RFI Rectification Errors in In-Amp Circuits: AN-671 - Analog Devices Application Notes (added 2/06) |
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AN-683: Strain Gage Measurement using an AC Excitation: AN-683 - Analog Devices Application Notes (added 2/06) |
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AN-772: A Design and Manufacturing Guide for the Lead Frame Chip Scale Package (LFCSP): AN-772 - Analog Devices Application
Notes (added 2/06) |
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AN-840: Development
of an Extensive SPICE Macromodel for 'Current-Feedback' Amplifiers: National Semiconductor - Application Note (Circuit / schematic design added 6/06) |
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Analog input circuit Serves any microController: 12/20/01 EDN - Design Ideas / (Electronic circuit added 10/03) The simple ADC in Figure 1 is perfect for getting analog signals
into a purely digital microcontroller. Using just five surface-mount parts, you can assemble it for less than 50 cents (1000), which is approximately half the cost of a single-chip-ADC
approach in the same volume. Moreover, this design takes only one pin from the microcontroller to operate. . |
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Bias Voltage and Current Sense Circuits for Avalanche Photodiodes: AN92 - Linear Technology - Avalanche photodiodes, used
in laser based fiberoptic systems, require high voltage bias and accurate, wide range current monitoring. Bias voltage varies from 15V-90V and current ranges from 100nA to 1mA, a 10,000:1
dynamic range. This publication presents various 5 volt powered circuits which meet these requirements. Appended sections detail specific circuit techniques and cover measurement practice. |
