J750 single-channel compact wideband amplifier
- Operates as general-purpose wideband amplifier
- Pickoff mode samples and amplifies loop-through signals
- Photodiode mode provides diode bias and allows fast photodiode to be located at the end of a coaxial cable
- Fixed gain of 100, DC to 1 GHz
- Risetime below 350 picoseconds
- Adjustable DC offset
- Operates from standard 12 volt "wall wart" power supply
- Compact extruded enclosure is supplied with mounting flange
- GHz Oscilloscope Preamplifier
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The J750 is a self-contained DC-to-1 GHz amplifier. It is suitable for general-purpose instrumentation and has provision for loop-through (signal pickoff) and photodiode applications.
| FUNCTION | Fixed-gain, general-purpose DC to 1 GHz amplifier with loop-through and photodiode modes |
| INPUT | Input signal level: ≤ ±20 millivolts, peak Input impedance: 1 kΩ (50Ω when loop-through connector is terminated) Highland J50 SMB terminator is furnished |
| GAIN | 40 dB (100x) into Hi-Z load, non-inverting 34 dB (50x) into 50Ω load, non-inverting |
| OUTPUT | Output signal level: ≤ ±2 volt, peak (Hi-Z load) ≤ ±1 volt, peak (50Ω load) Output impedance: 50Ω, source terminated |
| BANDWIDTH | DC to 1 GHz |
| NOISE | 5 mV RMS into 50Ω load, typical Equivalent to 100 µV RMS input noise, 3.2 nV/√Hz |
| DC OFFSET | Adjustable ±1 volt (Hi-Z load, relative to output) ±500 millivolts (50Ω load, relative to output) |
| BIAS CURRENT | 8 µA, typical |
| PHOTODIODE EXCITATION | +9 volts on coaxial cable shield, user selectable On/Off |
| OPERATING TEMPERATURE | 0 to 60°C; extended MIL/COTS ranges available |
| CALIBRATION INTERVAL | One year |
| POWER | +12 volts at 100 mA, max Highland J12 power supply recommended |
| CONNECTORS | Gold plated SMB Input, Loop/Term, Output jacks (SMA optional) 2.1 mm X 5.5 mm barrel power connector |
| INDICATOR | LED: green power |
| PACKAGING | 3.3″ (L) x 2.1″ (W) x 0.9″ (H) extruded anodized aluminum enclosure |
J750: single-channel compact wideband amplifier