![]() ![]() RS-232 RS-422/ RS-485 RS-232 RS-422/RS-485 SP340A-R3, SP400A-R3: SP401A SP402A: sp340a-r3 SP400A-R3 Opto-isolator opto isolator sp340a SP402A optoisolator DB25 jack datasheet optO isolatorsĪbstract: CURRENT TRANSFORMER OPTO COUPLER MICROPAC OPTO-ISOLATOR 52458 TC 494 C CURRENT TRANSFORMER transimpedance MICROPAC INDUSTRIES opto coupler 5 lead 640VDC In addition to two data line signals (TD and RD), the RS-232 Opto-Isolators pass one If your RS-232 equipment runs at a lower speed (up to 19.2 kbps), use the Opto-Isolator ( SP400A-R3). A ground loop occurs when, high rate of speed (up to 115.2 kbps), use the High-Speed Opto-Isolator ( SP340A-R3). ![]() Key Features Fiber, equipment from ground loops between buildings with BLACK BOX Opto-Isolators. Text: OPTO-ISOLATORS Protect your high-speed equipment and data from ground-loop problems. SLVA229 TPS2384 OPTO-ISOLATOR photo diode OPTO-ISOLATOR microcontroller opto isolator opto isolator optoisolator optO isolators nec v33 "power sourcing equipment" PS8802-2 PS8821-2Ībstract: SP400A-R3 Opto-isolator opto isolator sp340a SP402A optoisolator DB25 jack datasheet optO isolators SP401A Opto-isolator power consumption from the TPS2384 digital supply (V3.3 -, Application Report SLVA229 March 2006 Opto-Isolator Selection Guidelines: TPS2384 I2C, isolation is required between the micro-controller and Ethernet ports, opto-isolators can be placed between, selection of the opto-isolator devices.Text: opto-isolators in the control path. ![]() Would this actually work?Īlso, how would I find such a "matched" pair of optocouplers that could be used in this way? Potentially, the two couplers in a single-package dual channel optocoupler would be reasonably similar to each other, but I've yet to see a datasheet that actually gives any kind of specification for that beyond the general tolerances for the individual elements.OPTO-ISOLATOR Datasheets Context Search Catalog Datasheetġ997 - IEC 1010-1 General Safety RequirementsĪbstract: hcpl 601 optoisolator IEC-664 insulation distances UL 486 tables HP 450 optocoupler hp 450 HCNR200 optoisolator b HCPL-0701Ībstract: OPTO-ISOLATOR microcontroller opto isolator opto isolator optoisolator optO isolators nec v33 "power sourcing equipment" PS8802-2 PS8821-2 One idea I had is to use two separate optocouplers, driving one directly from the input and driving the second from the output of an op-amp, servoing until the second optocoupler is driven identically to the first, like this:īut I haven't ever seen a schematic like this in any appnotes or documentation. Would it be possible to build a circuit that didn't need an input-side supply voltage? ![]() However, there are some issues with this, particularly the need to have some kind of supply voltage on the input side to power the op-amp and provide a voltage reference for the detector to use. Simulate this circuit – Schematic created using CircuitLab I know the normal way of optically isolating an analog signal is to use an analog optocoupler with two detectors, and using an op-amp to servo the emitter voltage until the detector output matches the input, like this: ![]()
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