Probe Voltage and Impedance

Impedance: Maximum Tip Voltage 20 kOhms: 65 Vrms (20X Attenuation)

SMPM Voltage 3.25V

* Note: Maximum Port Voltage shown based on the specified maximum tip voltage. Consult your VNA’s manual to verify the VNA port voltage is below the ratings of your instrument.

Detailed Specifications

Characteristic	Rating
Bandwidth	DC-1MHz The final bandwidth is dependent on the cable length and the J2180A input capacitance.
Attenuation	Available in almost any user-defined attenuation Selected when purchased, NOT changeable by user
Probe Tip Size/ Probe Pitch	Available in 50 mil 60 mil and 100mil Fixed Pitches
Input C:	<1pF
Probe Connection	MINI_SMP
Rise Time (1X)	175ns – 350ns
Pin Resistance	Typical: 15m Ohms, Maximum 30m Ohms
Nominal Cable Length	0.5m
Operating Temperature	0 to 45° C (32° F to 104° F) at 80% Relative Humidity
Maximum Relative Humidity	80% at 31° C max
Usage	Indoor
Altitude	3000 m (9850 feet)
Absolute Maximum Voltage	< 50VAC and 75VDC

Caution:
To avoid equipment damage and/or severe injuries death or death do not use this probe close to voltages higher than 50 VAC or 75 VDC.

P2106A-20X-20K P2106A-1X-__ (User defined resistance) P2106A-__X-__ (User defined attenuation and resistance)	1-Port Transmission Line PDN Probe Sizes 50, 60, and 100 mil Pitches Available in 1:1, 20:1 and User-Defined Attenuations Variable Resistance including 20kOhm PDN Cable®  (0.5m BNC-Mini SMP) Delivery time is 4-5 weeks ARO for custom attenuation and connectors.	$1,995.00 Add to Cart
HV-NOISE	High Voltage Bundle includes… P2106A with 0.5m BNC-Mini SMP PDN cable (probe to J2180A) J2180A with 1m BNC-BNC (J2180A to scope or E5052B)	$4,738.00 Add to Cart

The Picotest P2106A probe is a high impedance voltage divider ‘Browser’ probe, specifically designed to be low bandwidth and resonance free. When paired with the Picotest J2180A low noise amplifier and PDN cable, the low noise measurement can be connected directly to any 50 Ohm instrument, including signal source analyzers, spectrum analyzers, and low-noise oscilloscopes. The P2106A provides one of the lowest noise floor testing solutions allowing measurement of sensitive power supplies for power amplifiers and telecommunications equipment up to 65V.

The bottom resistor is typically 1K and the tip resistor sets the attenuation. The P2106A-20K-20X has approximately a 19K tip resistor and 1K bottom resistor. This ~1kOhm Thevenin impedance forms a low pass filter with the coaxial cable (30pF/ft) and the J2180A low noise preamplifier input capacitance (~36pF) (Fbw=1/(2*PI*1k*125pF)=1.2MHz. There is essentially zero capacitance at the probe tip. The general application is to connect a relatively High Z, uncompensated probe to the J2180A amplifier for the purpose of getting a low noise, low bandwidth signal to a 50 Ohm instrument.

The P2106A is available in fixed pin pitches of 50, 60, or 100mils). The P2106A probe can be purchased in almost any desired attenuation. Using an uncompensated voltage divider results in near zero capacitance and is assured to be resonance free for accurate measurement with minimal loading. The uncompensated divider results in a low bandwidth measurement, set primarily by the coaxial cable and J2180A preamplifier capacitance.