J2116A Power Amplifier & High CMRR Isolation Amplifier
J2116A
The J2116A is a combined unit with source power amplifier and ground isolator with up to 22.5dB gain and 100dB CMRR. It is used to improve signal-noise in crosstalk and ultra-low impedance measurements.
It achieves +20dBm output with +/-9V power and +22.5dBm with +/-12V power. It works with all popular VNAs including the Keysight E5061B and the OMICRON Lab Bode 500.
The J2116A can be powered from +/-9V – +/-12V using an external power supply or batteries. Power is applied to the unit using connections from a supplied 4-pin Molex connector VEE-GND-GND-VCC (left to right). This is so that an external power supply can be used to power the isolator. SMA connectors are provided to input and output connections.
- Combined signal amplifier with high CMRR ground isolator
- +20dBm output / 100dB CMRR
- Supports 2-port shunt through impedance measurement as low as 1uOhm
- Works with 1-port probe including the P2105A and PacketMicro S-Probes
- Sub-uOhm impedance floor
- Measure crosstalk as low as -150dB
- Very flat response for simple de-embedding
- Compact design mounts directly on microprobe heads
- Isolator can run for 100 hours on a pair of 9V batteries
- Dynamic range can be improved by any combination of Increased test current (power amplifier on Port1), and/or Low-noise preamplifier (on Port2)
Technical Specifications Source Power Amplifier
| General Characteristics | Rating |
| Frequency Range | DC-140MHz |
| Gain | 20dB |
| Input signal connector | SMA (F) |
| Output signal connector | SMA (M) |
| Input Characteristics | Rating |
| Maximum input signal +/-9V | 225mVrms |
| Maximum input signal +/-12V | 300mVrms |
| Input Impedance | 50Ω |
| Input Return Loss 140MHz | 18dB |
| Damage level | 10Vpk |
| Output Characteristics | Rating |
| Maximum output amplitude +/-9V | 2.25Vrms 20dBm |
| Maximum output amplitude +/-12V | 3Vrms 22.5dBm |
| Output impedance | 50Ω |
| Output return loss 140MHz | 18dB |
| DC offset | +/-20mV |
| Damage Reverse power | 1W |
| Rise/Fall time | 2.5ns |
| Overshoot | 3% |
| Characteristics | Rating |
| Supply Voltage Range | +/-9V – +/-12V |
| Operating Current +/-9V | +/-28mA |
| Operating Current +/-12V | +/-38mA |
| Power connector | 4-pin Molex nano-fit cable included |
| Characteristics | Rating |
| Size | approximately 27mm x 48mm |
| Weight | approximately 15g |
