The Keysight Technologies N2803A is an InfiniiMax III series active probe amplifier designed for high-speed differential measurements up to 30 GHz. Utilizing advanced indium phosphide (InP) semiconductor technology, this probe offers exceptionally low loading and high fidelity, making it ideal for characterizing high-speed serial buses and RF signals in combination with Keysight Infiniium real-time oscilloscopes.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | AutoProbe II interface |
| Compatible Oscilloscopes | Keysight Infiniium 90000 X-Series, 90000 Q-Series, Z-Series, V-Series, and UXR-Series |
Physical
| Parameter | Value |
|---|---|
| Power Supply | Powered directly by Keysight Infiniium oscilloscope through AutoProbe II interface |
| Operating Temperature | 5 °C to 40 °C |
| Cable Length | 1.2 m |
Bandwidth & Rise Time
| Parameter | Value |
|---|---|
| Probe Bandwidth | 30 GHz |
| Rise Time (10% to 90%) | 13.3 ps |
| Rise Time (20% to 80%) | 9.1 ps |
Input Impedance
| Parameter | Value |
|---|---|
| Differential Input Resistance | 100 kΩ ±2% |
| Single-ended Input Resistance | 50 kΩ ±2% |
| Differential Input Capacitance | 86 fF (with N5445A browser) |
| Single-ended Input Capacitance | 142 fF (with N5445A browser) |
Signal Range
| Parameter | Value |
|---|---|
| Dynamic Range | 1.6 Vpp |
| DC Offset Range | ±16 V |
| Maximum Non-destructive Input Voltage | ±8 V (DC + AC peak) |
| Common Mode Range | ±6.25 V (at DC), ±1.5 V (at AC) |
Electrical Specifications
| Parameter | Value |
|---|---|
| Probe Attenuation Ratio | 4:1 / 8:1 (attenuation-dependent) |
| Probe Noise | 2.4 mV rms (referred to input) |
Performance
| Parameter | Value |
|---|---|
| DC Gain Accuracy | ±2% |
| Common Mode Rejection Ratio (CMRR) | > 40 dB at DC, > 30 dB at 1 GHz, > 12 dB at 20 GHz (probe head dependent) |
| Propagation Delay | 5.1 ns (probe amplifier only) |
| DSP Correction | Individual S-parameters stored in probe EEPROM |
Inputs & Outputs
| Parameter | Value |
|---|---|
| Input Coupling | DC |
| Output Impedance | 50 Ω |
Environmental
| Parameter | Value |
|---|---|
| Storage Temperature | -40 °C to +70 °C |
| Operating Humidity | 95% RH at up to 40 °C (non-condensing) |
Reliability & ESD
| Parameter | Value |
|---|---|
| ESD Tolerance | 8 kV (Human Body Model) |
Compatibility
| Parameter | Value |
|---|---|
| Compatible Probe Heads | N5445A, N5439A, N5444A, N2848A, N2849A |
Technology
Active Differential Probe Amplifier
Applications
High-speed serial bus characterization, differential signal measurements, and ultra-high bandwidth oscilloscope probing