Agilent N2802A Data Sheet

Keysight Technologies

InniiMax III/III+ Probing System

The world’s highest performing
probe system keeps getting better

Data Sheet

02 | Keysight | InniiMax III/III+ Probing System – Data Sheet

Unmatched performance

– Full 30 GHz bandwidth to the probe tip
– InniiMode probing for making dif ferential, single-ended and common mode

measurements with a single probe (with InniiMax III+)

– Industry’s highest delity and accuracy due to bandwidth and extremely low loading
– Probe ampliers loaded with measured s-parameters for more accurate response

correction

– Bandwidth upgradable (InniiMax III only)
– Variety of probe heads for different use models with maximum usability

Industry-leading probe performance

The InniiMax III probing system of fers you the highest performance available for
measuring differential and single-ended signals, with exible connectivity solutions for
today’s high-density ICs and circuit boards. Four different InniiMax III probe ampliers
ranging from 16 GHz to 30 GHz are available for matching your probing solution to your
performance and budget requirements. A proprietary 200 GHz f T InP (indium phosphide)
IC process with backside ground vias and novel thick lm technology is utilized to
accommodate your highest performance needs and is unmatched by any product in
the market.

InniiMax III probe amplier

The N2830A /N7000A Series InniiMax III+ probing system is the next generation of
InniiMax probing, greatly expanding the measurement capabilities and usability of a
probe capable of measuring all components of a differential signal. The built-in InniiMode
technology allows you to switch to differential, single-ended, and common mode without
adjusting probe tip connections. The InniiMax III+ probe’s InniiMode provides the
following modes of operation.

– A - B (differential)
– A - ground (single-ended A)
– B - ground (single-ended B)
– (A+B)/2 - ground (common mode)

–
The InniiMax III+ works with the full array of InniiMax III probe heads and supports
the full bandwidth of the InniiMax III+.

InniiMax III+ probe amplier (N2830A Series)

InniiMax III+ probe amplier (N7000A Series)

03 | Keysight | InniiMax III/III+ Probing System – Data Sheet

Correction

Frequency Hz

4E10

12

Highest delity and accuracy

The InniiMax III provides the highest bandwidth and incredibly
low loading to allow for a new level of signal delity and accuracy.
Continuing the probe head topology pioneered by Keysight
Technologies, Inc. in the InniiMax I and II probe systems, ve
probe heads are provided to accommodate multiple use models:
a 30 GHz browser that is extremely usable, a 25/28 GHz ZIF probe
head with economical replaceable/removable ZIF tips, a 28 GHz

2.92 mm probe head which allows cabled measurements using

2.92 mm, 3.5 mm, or SMA coax cables, an economical 16/26 GHz
solder-in probe head for demanding measurements, and a 16 GHz
QuickTip for a quick and secure connection.

More accurate probe correction

Each individual InniiMax III and III+ probe amp contains its
unique S-parameters, and this frequency response data is used
with the S-parameters of the various probe heads to further
atten the probe’s magnitude and phase response for accuracy.
Traditionally, probe correction uses a nominal model based on a
typical probe amplier instead of the specic amplier. Generally,
the biggest variation between probing systems is a result of the
probe amplier. The ability to correct a specic probe amplier’s
response results in a more accurate probe correction, which
yields a more accurate measurement.

Uncompromised Usability

Extensive line-up of probe heads and accessories

Keysight’s InniiMax III/III+ probes support a wide variety of
high-speed applications with an ex tensive line-up of probe heads
and accessories.

9

6

3

0

-3

-6

No Correction

-9

-12

-15

-18
1E8

1E9

1E10

– The N5445A browser head (30 GHz) is the best choice for

quick general-purpose troubleshooting of differential signals
with its z-axis compliance and variable spacing from 20 mil
– 125 mil (or 0.5 mm – 3.1 mm). The span between the signal
tips is easily adjusted with a thumb wheel on the browser.
Integrated LED lighting at the tip illuminates the probing area
for better visibility. Order N5476A for replacement browser
tips (set of 4).

04 | Keysight | InniiMax III/III+ Probing System – Data Sheet

– The N2848A /49A QuickTip offers the industry’s rst

magnetically-engaged probe head and tip for a quick and
secure connection, pushing the usability to the next level.
The N2848A QuickTip probe head quickly snaps to the
N2849A probe tip, utilizing magnets to connect to the two
sides of the differential signal and ground. Multiple N2849A
probe tips can be installed on a DUT, allowing quick and
reliable measurement of many probe points. The QuickTip
supports the InniiMode probing when used with the
InniiMax III+ probe amp and supports differential probing
with the InniiMax III probe amp. The N2849A QuickTip tips
can also be used with the InniiMax I/II probe amps when
used in conjunction with the N2851A QuickTip probe head
for InniiMax I/II.

– The N5439A ZIF probe head provides 28 GHz bandwidth in

an economical replaceable tip form factor. For differential
measurement, the N5439A ZIF probe head with the N5440A
or N5447A ceramic ZIF tip provides the industry’s lowest
signal loading. The ZIF tips can be left on the DUT as the
probe head is moved from one probing site to the next. Order
N5440A (450 Ω ceramic), N5447A (200 Ω ceramic) or the new
N2838A (450 Ω PC board) for a set of 5 ZIF tips with plastic
sporks to aid in soldering the tips to your DUT. The N2838A
PC board ZIF tip increased the robustness of the ZIF tip
signicantly while maintaining the bandwidth performance
up to 25 GHz when used in conjunction with the N2803A and
N5439A. Variable spacing from 5 mil – 80 mil (or 0.127 mm
– 2 mm). (The N5447A 200 Ω ZIF tip is not compatible with
InniiMax III+ probes.)

– The N5444A 2.92 mm/3.5 mm/SMA probe head (28 GHz)

allows you to connect two 2.92 mm, 3.5 mm or SMA cables
to make a differential measurement on a single oscilloscope
channel. Order N5448A 2.92 mm head ex cables (10” or
25 cm) to extend the cable length and add convenience.

– The N5441A solder-in probe head is an economical,

semi-permanent connection that provides up to 16 GHz
of bandwidth. Variable span of the leads ranges from
5 mil – 80 mil (or 0.127 mm – 2 mm).

05 | Keysight | InniiMax III/III+ Probing System – Data Sheet

– The N2836A solder-in head provides up to 26 GHz bandwidth

when used in conjunction with the N2803A probe amplier.
This probe head supports InniiMode probing when used with
the InniiMax III+ probe amp.

– The N5442A Precision BNC 50 Ω adapter allows you to

use your existing InniiMax I (1130A-1134A), InniiMax II
(1168A/69A), N2750A-52A, N2795A-97A active probes or a
general purpose 50 Ω BNC cable with the 90000 X- or 90000
Q-Series oscilloscope.

– The N5449A high impedance adapter allows connection for

probes that require a high impedance scope input such as
a high impedance passive probe, 1147B current probe, or
N2790A differential probe to the Inniium 90000-X/Q Series
oscilloscopes. The N5449A provides switchable AC/DC
coupling as well as 10:1 and 1:1 attenuation settings. The
adapter comes with a N2873A 500 MHz 10:1 passive probe.

– The N5477A sampling oscilloscope adapter makes the

InniiMax III probing system fully compatible with the
Inniium 86100C DCA-J sampling oscilloscope. Previously
the DCA-J was limited to 13 GHz of probing, but with the
N5477A, the DCA-J now has 30 GHz of probing, increasing
its performance and exibility. To use the InniiMax III+ probe
on sampling oscilloscopes, order the N1022B probe adapter
and the 1143A probe offset control and power module.

– The N5443A performance verication and deskew xture

is required to calibrate and verify the performance of the
InniiMax III probe. Keysight is currently the only oscilloscope
vendor in the market that provides the hardware for customers
to validate their high performance probing system. Order
E2655C to calibrate and verify the performance of the
InniiMax III+ probes.

Bandwidth upgradability (for InniiMax III)

As frequencies have continued to increase, so have the cost of
probes. The InniiMax III system offers the world’s rst fully
upgradable probe amplier. Purchase a 16 GHz probe amplier
today, knowing that in the future, you can upgrade the amplier
to higher bandwidths (20/25/30 GHz) at a fraction of the cost of
a new probe amplier.

06 | Keysight | InniiMax III/III+ Probing System – Data Sheet

InniiMax III/III+ Probing System Family Diagram

07 | Keysight | InniiMax III/III+ Probing System – Data Sheet

Performance Specications and Characteristics

InniiMax III/III+ warranted specications

Probe head Probe amp Bandwidth DC input

N5440A_N5439A ceramic 450 Ω ZIF tip and
ZIF probe head

N5445A 450 Ω browser N2803A 30 GHz probe amp 28 GHz Rdiff=100 kΩ ± 2%, Rse=50 kΩ ± 2%

N2803A 30 GHz probe amp 26 GHz Rdiff=100 kΩ ± 2%, Rse=50 kΩ ± 2%

N2836A 450 Ω solder-in probe head vertical
orientation with no ground wires

Differential mode N7003A
20 GHz probe amp

20 GHz Rdiff=100 kΩ ± 2%, Rse=50 kΩ ± 2%

InniiMax III/III+ probe head characteristics

These characteristics are mainly determined by the probe head. Performance
numbers listed are: -3 dB bandwidth/10-90% transition time/20-80% transition time.
Performance listed is with the highest bandwidth probe amp models in each family.
Performance with lower bandwidth amps is the lower of the: AmpBW, (.434/AmpBW),
(.308/AmpBW), or bandwidth measured with the highest
bandwidth amp in the family.

InniiMax III N2803A 30-

GHz probe amp

Probe head Input C Differential mode Differential mode Single-ended

N5440A_N5439A ceramic 450 Ω ZIF tip
and ZIF probe head

N5447A_N5439A ceramic 200 Ω ZIF tip
and ZIF probe head

N5445A 450 Ω browser Cdiff=35 fF;

N5441A 450 Ω solder-in probe head Cdiff = 77 fF;

N2838A_N5439A PC board 450 Ω ZIF tip
and ZIF probe head

N2836A 450 Ω solder-in probe head
vertical orientation with no ground wires

N2836A 450 Ω solder-in probe head
at orientation with minimum length
ground wires

N2849A_N2848A 450 Ω QuickTip and
QuickTip probe head with ground wires
connected

Cdiff=32 fF;
Cse=44 fF

Cdiff=32 fF;
Cse=44 fF

Cse=50 fF

Cse = 105 fF

Cdiff=95 fF;
Cse=130 fF

Cdif f=108 f F;
Cse=140 f F

Cdif f=108 f F;
Cse=140 f F

Cdiff=340 fF;
Cse=200 fF

28 GHz, 15.5 pS, 11.0 pS 20 GHz, 21.7 pS, 15.4 pSS n/a

28 GHz, 15.5 pS, 11.0 pS n/a

30 GHz, 14.5 pS, 10.3 pS 20 GHz, 21.7 pS, 15.4 pS n/a

17.2 GHz, 34.8 pS, 26.6 pS 20 GHz, 21.7 pS, 15.4 pS n/a

25 GHz, 17.4 pS, 12.3 pS 20 GHz, 21.7 pS, 15.4 pS n/a

27 GHz, 16.1 pS, 11.4 pS 20 GHz, 21.7 pS, 15.4 pS n/a

27 GHz, 16.1 pS, 11.4 pS 20 GHz, 21.7 pS, 15.4 pS

16 GHz, 27.1 pS, 19.3 pS 20 GHz, 21.7 pS, 15.4 pS

InniiMax III+ N7003A 20-GHz probe amp

mode

Common
mode

N5444A 2.92 mm, SMA, 3.5 mm
probe head

n/a 28 GHz, 15.5 pS, 11.0 pS 20 GHz, 21.7 pS, 15.4 pS

8 | Keysight | InniiMax III/III+ Probing System – Data Sheet

Performance Specications and Characteristics (cont’d)

InniiMax III/III+ probe amp characteristics

These characteristics are mainly determined by the probe amp.

Features N280XA InniiMax III probe amp N283XA InniiMax III+ probe amp

450 Ω probe heads 200 Ω probe heads N5444A 2.92 mm, SMA,

3.5 mm probe head

DC input resistance Rse=50 kΩ ± 2%

each input to ground,
Rdiff=100 kΩ ± 2%
and Rcm=25 k Ω ± 2%

Input resistance
> 10 kHz

Input voltage range
(differential or
single-ended)

Max input power n/a n/a 125 mW calculated by

Input common
mode range

DC attenuation ratio 6:1 3:1 6:1 5:1 or 10:1 Automatically

Offset range
(for probing a
single-ended signal)

Input referred noise
spectral density

Input referred noise
example

Maximum input
voltage

Rse=500 Ω each
input to ground,
Rdiff=1 kΩ and
Rcm=250 Ω

1.6 Vpp, ± 0.8 V
(HD2&3 < –34 dbc),

2.5 Vpp, ± 1.25 V
(HD2&3 < –38 dbc)

± 2 VDC to 250 Hz,
± 1.25 V > 250 Hz

± 16 V ± 8 V ± 6 V without violating

23.9 nV/rt (Hz) 12.0 nV/rt (Hz) 23.9 nV/rt (Hz) Diff 5:1 atten 33.5 nV/rt(Hz),

4 mVrms with
28 GHz probe head
and 30 GHZ probe
amp

18 Vpeak Cat 1 18 Vpeak Cat 1 8 Vpeak without violating

Rse=50 kΩ ± 2%
each input to ground,
Rdiff=100 kΩ ± 2%
and Rcm=25 k Ω ± 2%

Rse=500 Ω each
input to ground,
Rdiff=1 kΩ and
Rcm=250 Ω

0.8 Vpp, ± 0.4 V
(HD2&3 < -34 dbc),

1.6 Vpp, ± 0.8 V
(HD2&3 < -38 dbc)

± 6 VDC to 250 Hz,
± 0.65 V > 250 Hz

2 mVrms with
28 GHz probe head
and 30 GHz probe
amp

55 Ω to Vterm Rse=50 kΩ ± 2%

50 Ω to .901*Vterm Rse=500 Ω each

1.6 Vpp, ± 0.8 V
(HD2&3 < –34 dbc),

2.5 Vpp, ± 1.25 V
(HD2&3 < –38 dbc)

{[rms(vin-vterm)]^2/55]}
for each input

± 6 VDC to 250 Hz,
± 1.25 V > 250 Hz
without violating max
input power

max input power

4 mVrms 4.5 mVrms in diff mode

max input power

450 Ω probe heads N5444A 2.92 mm, SMA,

3.5 mm probe head

55 Ω to Vterm
each input to ground,
Rdiff=100 kΩ ± 2% and
Rcm=25 kΩ ± 2%

50 Ω to .901*Vterm
input to ground,
Rdiff=1 kΩ and
Rcm=250 Ω

2.5 Vpp or ±1.25 V at
5:1 attenuation,

5.0 Vpp or ± 2.50 V at
10:1 attenuation

n/a 125 mW calculated by

± 7 VDC to 100 Hz,
± 1.25 V > 100 Hz at
5:1 attenuation,
± 2.5 V > 100 Hz at
10:1 attenuation

selected based on volts/
division (all modes)

± 16 V ± 6 V without violating

Diff 10:1 atten 53.9 nV/rt(Hz),
SE A or B 5:1 atten 27.8 nV/rt(Hz),
SE A or B 10:1 atten 47.7 nV/rt(Hz),
CM 5:1 atten 21.8 nV/rt(Hz),
CM 10:1 atten 38.4 nV/rt(Hz)

5:1 atten with >= 18 GHz
probe head and 13 GHz
probe amp

18 Vpeak Cat 1 8 Vpeak without violating

2.5 Vpp or ± 1.25 V at

5:1 attenuation,

5.0 Vpp or ± 2.50 V at

10:1 attenuation without

violating max input power

{[rms(vin-vterm)]^2/55]}

for each input

± 6 VDC to 100 Hz,

± 1.25 V > 100 Hz at

5:1 attenuation,

± 2.5 V > 100 Hz at

10:1 attenuation without

violating max input power

5:1 or 10:1 Automatically

selected based on volts/

division (all modes)

max input power

4.5 mVrms in diff mode

5:1 atten with 28 GHz

N5444A probe head and

13 GHz probe amp

max input power

09 | Keysight | InniiMax III/III+ Probing System – Data Sheet

What is InniiMode?

InniiMode allows convenient measurement of differential, single-ended and common
mode signals with a single probe tip - without reconnecting the probe from its
connection point.

10 | Keysight | InniiMax III/III+ Probing System – Data Sheet

Ordering Information

InniiMax III/III+ probe amplier models

Model number Description Recommended oscilloscope

N2803A 30 GHz InniiMax III probe amplier Inniium 90000X /Q/Z Series 28 GHz - 63 GHz models

N2802A 25 GHz InniiMax III probe amplier Inniium 90000X/Q/Z Series 25 GHz models

N7003A 20 GHz InniiMax III+ probe amplier Inniium 90000X/V/Q/Z Series 20 GHz models

N2801A 20 GHz InniiMax III probe amplier Inniium 90000X /Q/Z Series 20 GHz models

N7002A 16 GHz InniiMax III+ probe amplier Inniium 90000V/X Series 16 GHz models

N2800A 16 GHz InniiMax III probe amplier Inniium 90000X Series 16 GHz models

N7001A 13 GHz InniiMax III+ probe amplier Inniium 90000V/X Series 13 GHz models

N2832A 13 GHz InniiMax III+ probe amplier Inniium 90000X 13 GHz and 90000A models

N7000A 8 GHz InniiMax III+ probe amplier Inniium 90000V Series 8 GHz models

N28 31A 8 GHz InniiMax III+ probe amplier Inniium 90000A and S-Series

N2830A 4 GHz InniiMax III+ probe amplier Inniium 90000A and S-Series

Note: InniiMax III and III+ probe amps are not compatible with existing InniiMax I or II probe heads.

InniiMax III/III+ probe heads

Model number Description Notes

N2848A InniiMax III QuickTip probe head Compatible with InniiMax III/III+ amp

Supports InniiMode with InniiMax III+ amp

N2849A InniiMax III QuickTip tips Set of 4 tips

N5445A InniiMax III browser head Order N5476A for replacement probe tips (set of 4)

N5439A InniiMax III ZIF probe head Order N2838A PC board ZIF (450 Ω), N5440A Ceramic ZIF (450 Ω) or

N5447A Ceramic ZIF (200 Ω) for a set of 5 ZIF tips with plastic sporks

N5444A InniiMax III 2.92 mm/3.5 mm/SMA probe head Order N5448A 2.92 mm head ex cables to extend the cable length.

Supports InniiMode with InniiMax III+ amp

N5441A InniiMax lll 16 GHz solder-in probe head

N2836A InniiMax III 26 GHz solder-in probe head Supports InniiMode with InniiMax III+ amp

Note: N54xx A InniiMax III/III+ probe heads are not compatible with InniiMax I or II probe amps.

InniiMax III probe adapters

Model number Description Notes

N5442A Precision BNC adapter (50 Ω) For use with InniiMax I/II/III+ probes, N2750A-52A, N2795A/96A/97A,

1156A-58A etc.

N5449A High impedance probe adapter Includes one N2873A 500MHz 10:1 passive probe

N5 477A Sampling scope adapter For InniiMax III amp to use with Keysight 86100C DCA-J sampling scope

N1022B Probe adapter For InniiMax III+ amp to use with 86100C DCA-J sampling scope

N5443A Performance verication and deskew xture For InniiMax III and InniiMax III+ >13 GHz

E2655C Performance verication and deskew xture For InniiMa x III+ <=13 GHz and InniiMax I/II

11 | Keysight | InniiMax III/III+ Probing System – Data Sheet

Ordering Information (cont’d)

Probe bandwidth upgrade options (for InniiMax III only)

Model number Description Notes

N5446A-001 16 GHz to 20 GHz bandwidth upgrade

N5446A-002 20 GHz to 25 GHz bandwidth upgrade

N5446A-003 25 GHz to 30 GHz bandwidth upgrade

N5446A-004 16 GHz to 25 GHz bandwidth upgrade

N5446A-005 16 GHz to 30 GHz bandwidth upgrade

N5446A-006 20 GHz to 30 GHz bandwidth upgrade

Note: Purchase t wo or more upgrade options to go from 16 to 25 or 30 GHz and 20 to 30 GHz.
To upgrade the probe bandwidth, you simply need to send the probe to the Keysight service center.

Other recommended accessories for InniiMax III/III+ probing system

Model number Description Notes

N2787A 3D probe positioner For hands-free probing

N5450B Extreme temperature extension cable 1 m long , Use N5441A solder-in head for extreme temperature probing

with InniiMax III/III+

N2812A High performance input cable, 2.92 mm connectors,

1 m length

MV-23 Carson Optical MagniVisor www.carsonoptical.com/Magniers

For use with Inniium 90000-X/Q Series oscilloscope

12 | Keysight | InniiMax III/III+ Probing System – Data Sheet

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(BP-02-06-15)

This information is subject to change without notice.
© Keysight Technologies, 2015
Published in USA, February 17, 2015
5990-5653EN

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