AD2801 800 MHz active differential probe, BNC

The AD2801 is a high-bandwidth differential probe. With a fast 800 MHz bandwidth it is ideal for measuring high-speed differential signals.

This differential probe extends the functionality of standard single-ended input oscilloscopes to allow a safe and accurate method of making differential voltage measurements. Applications include making safe measurements in power circuit applications and acquisition of high-speed balanced differential signals found in serial communications buses.

Recently redesigned, the AD2801 replaces the TA046 with the same performance specifications, but with improved powering options. This probe now includes an in-line battery module, with a 5 V USB power lead integrated for use with standard off-the-shelf USB chargers.

The kit includes the following items:

  • AD2801 probe body, power unit and BNC assembly
  • 1 pair test wires, red and black, 0.8 mm x 70 mm
  • 1 pair test wires, red and black, 0.8 mm x 130 mm
  • 1 pair large grabbers, 5 mm wide, red and black
  • 1 pair small grabbers, 2.5 mm wide, red and black
  • Test tip, 0.8 mm, 6 pcs
  • 2-pin prods, assorted lengths, 3 pcs
  • 9 V battery
  • USB power cable
Top view of the AD2801 probe and its kit contents
Currently in back order status, call for anticipated lead times +1-800-591-2796
Title Language Issue Size Updated All products All languages All documents Status
AD2201 and AD2801 EU Declaration of Conformity English 1 1 MB Sep 17 2020 english open
AD2801 800 MHz 30 V Differential Probe User’s Guide English 3 536 KB Nov 06 2020 english open
AD2801 differential probe specifications
Bandwidth DC to 800 MHz (twin pin configuration)
Accuracy ±2%
Input impedance  100 kΩ || 2 pF
Attenuation 10:1
Input voltage
Max. differential  ±15 V
Max. common mode  ±30 V
Absolute max. voltage  ±40 V
Output voltage 
Swing (into 50 Ω load)  ±1.5 V
Offset (typical)  < ±5 mV 
Noise (typical) 0.3 m V RMS
Output impedance (typical) 50 Ω 
CMRR (typical) 60 dB at 60 Hz; 15 dB at 500 MHz 
Output BNC cable length 1.2 m
Power requirements
Battery 9 V (PP3, 6LR61)
Mains adaptor(s) 6 V DC 500 mA or 9 V DC 300 mA
USB power lead 5 V DC
Ambient operating temperature –10 to +40 °C
Ambient storage temperature –30 to +70 °C
Weight 130 g 
Dimensions (LxWxH)  111 mm x 22 mm x 14 mm 
Compliance Designed and tested in accordance with the European standard publication EN 61010-031:2015 (Safety requirements for hand-held probe assemblies for electrical measurement and test)