J2180A / J2180A-20 Ultra Low Noise Preamp

J2180A 0.1Hz -100MHz Ultra Low Noise Preamp	J2180A-20 20Hz -100MHz Ultra Low Noise Preamp

• Works with all oscilloscopes, spectrum analyzers and network analyzers
• Compatible with the P2106A probe for ultra-low noise measurement to 2MHz
• Use high input impedance scope probes with 50 Ohm Instruments
• Active DC bias loop maintains low DC output voltage
• Better Transient Response
• High input impedance compatible with typical probes minimizes circuit loading
• Ultra-Low noise
• Works with near field probes for EMI troubleshooting
• Improves effective noise floor and spurious response
• Very wide bandwidth 0.1Hz – 100MHz (J2180A, 20Hz – 100MHz (J2180A-20)
• Compatible with (included) J2171A

J2180A / J2180A-20 Product Information

The J2180A and J2180A-20 low noise preamplifiers provide a fixed, AC coupled 20dB gain while converting a 1 MOhm input impedance to a 50 Ohm output impedance. With a 3dB bandwidth of 0.1Hz to 100MHz (J2180A), 20Hz to 100MHz (J2180A-20) and 10Hz to 1MHz (J2181A), the preamplifiers improve the sensitivity of oscilloscopes, network analyzers and spectrum analyzers while reducing the effective noise floor and spurious response. The J2180A-20 is lower noise than the J2180A at the cost of some low frequency bandwidth. The preamplifiers can also serve as a low frequency DC blocker for a spectrum analyzer or you can use them to connect a high input impedance oscilloscope probe to 50 Ohm equipment.

The J2180A preamplifier offers very low noise, fast 100V/uS slew rate for pulse applications and very low distortion for audio applications. A typical noise plot shows the noise is 2.4nV/rt_Hz. (See below). The J2180A-20 is about 1/3rd the noise of the J2180A (as measured over a 10s timeframe, 8mVrms/J2180A vs. 2.3mVrms/J2180A-20 output referred).

J2180A- Detailed Specifications

J2180A-20 - Detailed Specifications