Browse over 10,000 Electronics Projects using the Page Numbering provided at the bottom of each Page.

Teardown & analysis of a Keysight InfiniMax III N2802A 25GHz active probe

Teardown & analysis of a Keysight InfiniMax III N2802A 25GHz active probe

A teardown & analysis of a Keysight InfiniMax III N2802A 25GHz active probe from TheSignal Path:

In this episode Shahriar takes a close look at one of Keysight (Agilent) InfiniMax III active probes. The model N2802A offers 25GHz of analog bandwidth, 17.5pS of rise time and a total differential input capacitance of 32fF at 10k-Ohm input impedance. The front-end amplifier of this active probe is designed in an in-house InP process, the same process responsible for the front-end of the X-Series Keysight oscilloscopes.
The teardown of the probe shows the control circuitry in the main probe body built around a PIC 16F877 microcontroller coupled to a DAC, EEPROM memory and various high-current and precision op-amps for biasing. The main front-end microwave module reveals the InP ASIC and supporting microwave circuity. There seems to be a dual-path design to provide a large DC common-mode offset capability as well as a high-bandwidth.

 

 

More Articles to Read

avatar
EEWeb
avatar
Dangerous Prototypes
avatar
EEWeb
avatar
Arduino Blog
avatar
Arduino Blog
avatar
Ken Shirrif
avatar
Dangerous Prototypes
avatar
EEWeb
avatar
Arduino Blog
avatar
Freetronics
avatar
Arduino Blog
avatar
Dangerous Prototypes

Top




Shares