P6205

Tektronix P6205
750 MHz active probe Tektronix P6205 Compatible with Tekprobe BNC connector Produced from (?) to (?) Manuals Tektronix P6205 Manual Tektronix P6203 P6204 P6205 P6217 P6231 Catalog Specs

The Tektronix P6205 is a 750 MHz active FET probe for TDS500 series, DSA600 series, CSA404 and 11000-series scopes with Tekprobe BNC inputs.

Key Specifications

Bandwidth	750 MHz (probe only) 600 MHz on 11A72 450 MHz on TDS500/600
Rise time	< 467 ps
Attenuation	10×
Input impedance	1 MΩ // 2 pF
Output	into 50 Ω
Dynamic range	±10 V
Max. input voltage	40 V DC + peak AC non-destructive
Interface	Tekprobe BNC connector

Exploded view of the probe assembly. The PCB is soldered to the shielding tube and the coax, and the tube is then crimped over the coax.
The probe uses "lossless" 50 Ω coax, as there's amplification at the business end. The circuitry connects to the TekProbe interface to declare the probe's identity to the scope.
The tip network comprises three laser-trimmed resistors and a laser-trimmed capacitor. The tip resistance measures 800 kΩ, the middle resistor was on the order of 25 Ω, and the resistance to ground is 200 kΩ. This makes a 1/5 divider from tip to the amplifier.
It looks like the amplifier has two identical sections, presumably the same chip is used for differential active probes.