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ACT4419D Datasheet(PDF) 1 Page - Aeroflex Circuit Technology |
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ACT4419D Datasheet(HTML) 1 Page - Aeroflex Circuit Technology |
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1 / 6 page  CIRCUIT TECHNOLOGY www.aeroflex.com eroflex Circuit T echnology – Data Bus Modules For The Future © SCD4419D REV G 5/10/00 Features • World’s smallest and lowest standby power dual variable amplitude transceiver 0.3" x 1.2" packages • Lowest standby power • Dual transceiver meets military data bus requirements, MIL-STD-1553 • Low power dissipation at full output power • Single +5V power supply • Current source output • Monolithic construction using Dielectrically Isolated (D.I.) • Processed and screened to MIL-STD-883 specs • Radiation Hard to 300 KRADS total dose • DESC SMD pending • +5V Control line General Description The Aeroflex Circuit Technology model ACT4419D is a next generation D.I. monolithic transceiver which provides variable amplitude in full compliance with MIL-STD-1553 data bus requirements with the lowest standby power consumption available and one power supply operation. The dual channel model ACT4419D performs the front-end analog function of inputting and outputting data through a transformer to a MIL-STD-1553 data bus. Design of these transceivers reflects particular attention to active filter performance. This results in low bit and word error rate with superior waveform purity and minimal zero crossover distortion. Efficient transmitter electrical and thermal design provides low internal power dissipation and heat rise at high as well as low duty cycles. Variable amplitude is adjusted with factory preset 0 – 5 Vdc control line at 1 mA maximum input current at 5 Volts. Transmitter The Transmitter section accepts bi-phase TTL data at the input and when coupled to the data bus with a primary grounded center tap 1:2.5 transformer, isolated on the data bus side with two 52.5 Ohm fault isolation resistors, and loaded by two 70 Ohm terminations plus additional Block Diagram (without Transformer, Channel A shown) SHAPING OUTPUT STAGE COMP. COMP. REFERENCE ACTIVE FILTER DRIVER TX DATA IN TX DATA IN TX INHIBIT +5 V STROBE TX/RX TX/RX RX DATA OUT RX DATA OUT GROUND VCONT Channel B INPUT AMP Channel A Channel B for MIL-STD-1553 Dual Variable Amplitude Transceivers ACT4419D Dual Transceivers ACT4419D |
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