J740 single-channel compact fast fiberoptic-to-electrical converter
- Small, rugged extruded package allows the electrical-to-optical transition to be located wherever most convenient
- Bandwidth greater than 1 GHz
- Accepts optical inputs from the Highland electrical-to-optical converters or compatible sources
- Provides fast, DC-coupled analog conversion of optical signals
- Timing link jitter typically below 8 picoseconds RMS when used with companion J724 Electrical-to-Optical Converter
- Ideal accessory for Highland Model P400 Digital Delay/Pulse Generator
- Compatible with Highland optical transmitter products
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The J740 is a compact, amplified, DC-coupled linear single-channel optical-to-electrical converter that allows fast timing and logic-level signals to be transported via fiberoptic levels to take advantage of the superior speed, attenuation, and EMI characteristics of optical fiber.
It features greater than 1 GHz bandwidth,1 volt/mW sensitivity (0.5 V/mW into 50 ohms) and is available in 850, 1310, and 1550 nanometer versions. It is suitable for use with single- or multi-mode fiber inputs.
| FUNCTION | Single-channel fast optical-to-electrical converter |
| INPUT | GaAs PIN detector (850 nm versions) InGaAs PIN detector (1310 nm and 1550 nm versions) ST or FC fiberoptic connector 1mW nominal optical fiber power |
| PROPAGATION DELAY | < 900 ps (light in, electrical out) |
| ANALOG OUTPUT | +1 V per mW optical input (Hi-Z load) +500 mV per mW optical input (50Ω load) Electrical output SMB connector |
| BANDWIDTH | DC to > 1 GHz |
| RISETIME | 250 ps, typical |
| NOISE | < 3 mV RMS (50Ω load) |
| JITTER | < 8 ps RMS (P400 + J724 + J740 combination) |
| OPERATING TEMPERATURE | 0 to 60°C; extended MIL/COTS ranges available |
| CALIBRATION INTERVAL | One year |
| POWER | +12 volts at 70 mA, nominal J12 Universal Wall-Plug Adapter recommended |
| CONNECTORS | ST or FC optical input receptacles Gold plated SMB electrical output connector 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 |
J740-1: 850 nm single-channel compact fast fiberoptic-to-electrical converter with ST connectorization
J740-3: 1310 nm single-channel compact fast fiberoptic-to-electrical converter with ST connectorization
J740-5: 1550 nm single-channel compact fast fiberoptic-to-electrical converter with ST connectorization
J740-11: 850 nm single-channel compact fast fiberoptic-to-electrical converter with FC connectorization
J740-13: 1310 nm single-channel compact fast fiberoptic-to-electrical converter with FC connectorization
J740-15: 1550 nm single-channel compact fast fiberoptic-to-electrical converter with FC connectorization