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Agilent TechnologiesAgilent N2820/1A High-SensitivityCurrent ProbesUser’s Guide

10 N2820/1A User’s Guide1 General InformationAccessoriesAccessoriesSupplied Accessories The N2820A and N2821A probes come with the accessories shown i

General Information 1AccessoriesN2820/1A User’s Guide 11NOTE To ensure the display of accurate waveforms, always connect the supplied ground lead when

12 N2820/1A User’s Guide1 General InformationMeasurements on Battery Powered DevicesMeasurements on Battery Powered DevicesWhen making measurements on

General Information 1Connecting the Probe to The OscilloscopeN2820/1A User’s Guide 13Connecting the Probe to The OscilloscopeIf you have an N2820A two

14 N2820/1A User’s Guide1 General InformationConnecting the Probe to The OscilloscopeFigure 6 Two N2820A Probes Connected to the Oscilloscope

General Information 1Connecting the Probe to The OscilloscopeN2820/1A User’s Guide 15Probe Configuration(Infiniium Oscilloscopes)Use the Probe Configu

16 N2820/1A User’s Guide1 General InformationConnecting the Probe to The Oscilloscope4 If you are using an N2821A probe, use the Primary Channel Outpu

General Information 1Connecting the Probe to The OscilloscopeN2820/1A User’s Guide 17To configure the probe1 Connect the probe to the oscilloscope. On

18 N2820/1A User’s Guide1 General InformationN2820A Probes and Dual-Grid ViewN2820A Probes and Dual-Grid ViewWhen using an N2820A probe on a 9000 H- S

General Information 1N2820A Probes and Dual-Grid ViewN2820/1A User’s Guide 19If you’re familiar with the oscilloscope’s Zoom Mode, you may be interest

Notices© Agilent Technologies, Inc. 2013No part of this manual may be reproduced in any form or by any means (including elec-tronic storage and retrie

20 N2820/1A User’s Guide1 General InformationCharge—A New MeasurementCharge—A New MeasurementFor the N2820A and N2821A probes, the oscilloscopes inclu

General Information 1Charge—A New MeasurementN2820/1A User’s Guide 21With the oscilloscope’s Zoom Mode turned on, gating can be used to show a reduced

22 N2820/1A User’s Guide1 General InformationCharge—A New MeasurementOn InfiniiumOscilloscopesTo make a Charge measurement:1 Connect the probe. If an

General Information 1Charge—A New MeasurementN2820/1A User’s Guide 23On InfiniiVisionOscilloscopesTo make a Charge measurement:1 Connect the probe. If

24 N2820/1A User’s Guide1 General InformationDynamic RangeDynamic RangeThe N2820A and N2821A probes provide a large dynamic measurement range (>20,

General Information 1Dynamic RangeN2820/1A User’s Guide 25about 50 µA and the zoomed- out channel can display about 2.2A for a dynamic range of approx

26 N2820/1A User’s Guide1 General InformationInspecting the ProbeInspecting the Probe Inspect the shipping container for damage.Keep the damaged ship

General Information 1Returning the Probe for ServiceN2820/1A User’s Guide 27Returning the Probe for ServiceIf the probe is found to be defective we re

28 N2820/1A User’s Guide1 General InformationSafety InformationSafety InformationThis manual provides information and warnings essential for operating

General Information 1Safety InformationN2820/1A User’s Guide 29WARNING Observe Probe Ratings.Do not apply any electrical potential to the probe input

ContentsN2820/1A User’s Guide 3Contents1 General InformationIntroduction 6Accessories 10Measurements on Battery Powered Devices 12Connecting the Probe

30 N2820/1A User’s Guide1 General InformationSafety InformationCAUTION The probe cable is a sensitive part of the probe and, therefore, you should be

31Agilent Technologies2ProbingIntroduction 32Attaching a Probe Head 34N2822/4A Probe Heads 35N2825A User-Defined Head 37Make-Before-Break Connectors 4

32 N2820/1A User’s Guide2 ProbingIntroductionIntroductionAs mentioned in chapter 1, there are three interchangeable RSENSE probe heads: N2822A, N2824A

Probing 2IntroductionN2820/1A User’s Guide 33Figure 14 Different Probing Connections With Relative Merit

34 N2820/1A User’s Guide2 ProbingAttaching a Probe HeadAttaching a Probe HeadYou do not need any tools to attach or remove a probe head. To attach a h

Probing 2N2822/4A Probe HeadsN2820/1A User’s Guide 35N2822/4A Probe HeadsThe N2822/4A heads include an RSENSE resistor. Because the oscilloscope recog

36 N2820/1A User’s Guide2 ProbingN2822/4A Probe HeadsFigure 16 Vburden Developed Across Probing ComponentsNeed a Different RSENSEResistor Value?If you

Probing 2N2825A User-Defined HeadN2820/1A User’s Guide 37N2825A User-Defined HeadUse the N2825A user- defined head in situations where you want to use

38 N2820/1A User’s Guide2 ProbingN2825A User-Defined HeadIn the dialog box, use the User Def Head Resistance field to enter the RSENSE resistance. Bec

Probing 2N2825A User-Defined HeadN2820/1A User’s Guide 39Converting an N2825A toInternal RSENSE HeadAlthough the N2825A is intended to be used with an

4 N2820/1A User’s GuideContentsN2820A Input Impedance 68Input Load Model 695 Performance VerificationAverage Gain of Zoomed-In Channel 73Average Gain

40 N2820/1A User’s Guide2 ProbingMake-Before-Break ConnectorsMake-Before-Break ConnectorsThe supplied Make- Before- Break (MBB) connectors allow you t

Probing 2Make-Before-Break ConnectorsN2820/1A User’s Guide 41Figure 19 Socketed Lead Snaps Onto the MBB ReceptacleTo Use the MBB Connector1 Solder one

42 N2820/1A User’s Guide2 ProbingMake-Before-Break ConnectorsFigure 20 Connecting the MBB Connector with N2822/4A Head

Probing 2Make-Before-Break ConnectorsN2820/1A User’s Guide 43Figure 21 MBB Connector With N2825A User-Defined HeadTo Download the HeaderGerber FileYou

44 N2820/1A User’s Guide2 ProbingTo Attach the Sensor LeadsTo Attach the Sensor Leads1 Detach the head from the probe amplifier as explained in “Attac

Probing 2To Change an N2825A Head’s ID ResistorN2820/1A User’s Guide 45To Change an N2825A Head’s ID Resistor1 Detach the head from the probe amplifie

46 N2820/1A User’s Guide2 ProbingTo Change an N2825A Head’s ID ResistorFigure 26 Location of ID Resistor (R2)5 Replace the ID resistor with one of the

Probing 2To Change an N2825A Head’s ID ResistorN2820/1A User’s Guide 478 On Infiniium oscilloscopes,a Click the Setup > Probe Configuration menu co

48 N2820/1A User’s Guide2 ProbingTo Change an N2825A Head’s ID ResistorTable 6 N2825A IdentificationN2825A MarkingAssociated DUT RSENSEResistor Value

Probing 2To Add an RSENSE Resistor to an N2825A HeadN2820/1A User’s Guide 49To Add an RSENSE Resistor to an N2825A HeadYou can add your own RSENSE res

5Agilent Technologies1General InformationIntroduction 6Accessories 10Measurements on Battery Powered Devices 12Connecting the Probe to The Oscilloscop

50 N2820/1A User’s Guide2 ProbingTo Add an RSENSE Resistor to an N2825A HeadFigure 28 Location of RSENSE Resistor (R1)4 Replace the head’s cover using

51Agilent Technologies3Characteristics and SpecificationsCurrent Range Graphs 54Zoomed-In Input Voltage Range Versus Supply Voltage 56Zoomed-In Input

52 N2820/1A User’s Guide3 Characteristics and SpecificationsTable 7 Characteristics and SpecificationsItem CharacteristicBandwidth (–3 dB) Zoom-Out Ch

Characteristics and Specifications 3N2820/1A User’s Guide 53Table 8 Environmental CharacteristicsItem CharacteristicTemperature (operating) Operating:

54 N2820/1A User’s Guide3 Characteristics and SpecificationsCurrent Range GraphsCurrent Range GraphsThe following graphs show the minimum and maximum

Characteristics and Specifications 3Current Range GraphsN2820/1A User’s Guide 55Figure 30 Minimum Current Range

56 N2820/1A User’s Guide3 Characteristics and SpecificationsZoomed-In Input Voltage Range Versus Supply VoltageZoomed-In Input Voltage Range Versus Su

Characteristics and Specifications 3Zoomed-In Input Current Range Versus Supply VoltageN2820/1A User’s Guide 57Zoomed-In Input Current Range Versus Su

58 N2820/1A User’s Guide3 Characteristics and SpecificationsZoomed-In Input Current Range Versus Supply VoltageFigure 33 Zoomed-In Input Current Range

Characteristics and Specifications 3DimensionsN2820/1A User’s Guide 59DimensionsFigure 34 Probe and Tip Dimensions

6 N2820/1A User’s Guide1 General InformationIntroductionIntroductionThe N2820A and N2821A probes are shipped in the case that is shown in Figure 1. Wh

60 N2820/1A User’s Guide3 Characteristics and SpecificationsDimensions

61Agilent Technologies4Performance Data PlotsN2820A Frequency Response 62N2820A Common Mode Rejection Ratio 64N2820A Step Response 65N2820A Step Track

62 N2820/1A User’s Guide4 Performance Data PlotsN2820A Frequency ResponseN2820A Frequency ResponseBW: . . . . . . . . . . . . . . . . . . . . . . . .

Performance Data Plots 4N2820A Frequency ResponseN2820/1A User’s Guide 63BW: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5 MHzFigu

64 N2820/1A User’s Guide4 Performance Data PlotsN2820A Common Mode Rejection RatioN2820A Common Mode Rejection RatioFigure 37 Common Mode Rejection Ra

Performance Data Plots 4N2820A Step ResponseN2820/1A User’s Guide 65N2820A Step ResponseZoomed- In Channel10–90% rising edge step: . . . . . . . . .

66 N2820/1A User’s Guide4 Performance Data PlotsN2820A Step TrackingN2820A Step TrackingInput Step10–90% Rise Time: . . . . . . . . . . . . . . . . .

Performance Data Plots 4N2820A Step TrackingN2820/1A User’s Guide 67Input Step10–90% Rise Time: . . . . . . . . . . . . . . . . . . . 446.9 ns20–80%

68 N2820/1A User’s Guide4 Performance Data PlotsN2820A Input ImpedanceN2820A Input ImpedanceFigure 41 Input Impedance

Performance Data Plots 4Input Load ModelN2820/1A User’s Guide 69Input Load ModelFigure 42 Input Load Model

General Information 1IntroductionN2820/1A User’s Guide 7includes two amplifiers and its main output can be switched between these two views. Before us

70 N2820/1A User’s Guide4 Performance Data PlotsInput Load Model

71Agilent Technologies5Performance VerificationAverage Gain of Zoomed-In Channel 73Average Gain of Zoomed-Out Channel 77Performance Test Record 80This

72 N2820/1A User’s Guide5 Performance VerificationTable 10 Required Test Equipment Test Equipment Recommended ModelDigital Multimeter General purpose

Performance Verification 5Average Gain of Zoomed-In ChannelN2820/1A User’s Guide 73Average Gain of Zoomed-In ChannelThis procedure applies to both N28

74 N2820/1A User’s Guide5 Performance VerificationAverage Gain of Zoomed-In Channel3 Record the value of +Vin measured on the multimeter:+Vin:4 Move t

Performance Verification 5Average Gain of Zoomed-In ChannelN2820/1A User’s Guide 75positive gain:7 Set the DC power supply to –20 mV.NOTE Although thi

76 N2820/1A User’s Guide5 Performance VerificationAverage Gain of Zoomed-In Channelaverage gain (zoomed- in):14 The average gain (zoomed- in) should b

Performance Verification 5Average Gain of Zoomed-Out ChannelN2820/1A User’s Guide 77Average Gain of Zoomed-Out ChannelPerform this procedure only for

78 N2820/1A User’s Guide5 Performance VerificationAverage Gain of Zoomed-Out Channel3 Record the value of +Vin measured on the multimeter:+Vin:4 Move

Performance Verification 5Average Gain of Zoomed-Out ChannelN2820/1A User’s Guide 797 Set the DC power supply to –500 mV.NOTE Although this is the rec

8 N2820/1A User’s Guide1 General InformationIntroductionOscilloscope Compatibility The N2820A and N2821A probes are compatible with the Agilent oscill

80 N2820/1A User’s Guide5 Performance VerificationPerformance Test RecordPerformance Test RecordTable 11 N2820/1A Performance Test RecordModel #: Date

N2820/1A User’s Guide 81IndexIndexNumerics1143A Probe Offset Control and Power Module, 72Aaccessoriesreplacement, 11supplied, 10Add Head field, 16Agil

82 N2820/1A User’s GuideIndexprimary cable, 13Primary Channel Output field, 16probecleaning, 13configuration, 15connecting, 13inspecting, 26leads, 32N

General Information 1IntroductionN2820/1A User’s Guide 9Infiniium Dual-Grid View The N2820A probe provides two channel- input cables which allow two s