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ACT4438-1

Aeroflex Circuit Technology
Part Number ACT4438-1
Manufacturer Aeroflex Circuit Technology
Description Transceiver
Published Mar 23, 2005
Detailed Description ACT4438–1 Transceiver for MIL-STD-1553 / 1760 in a Chipscale Package Preliminary Features • Transceiver meets military ...
Datasheet PDF File ACT4438-1 PDF File

ACT4438-1
ACT4438-1

Overview
ACT4438–1 Transceiver for MIL-STD-1553 / 1760 in a Chipscale Package Preliminary Features • Transceiver meets military data bus requirements, MIL-STD-1553 and MIL-STD-1760 • Low power dissipation at full output power • Single +5V power supply • Current Source Transmitter Output • Bipolar Monolithic Construction • Miniature Chipscale Package Bumped Chip Carrier™ (BCC++) CIRCUIT TECHNOLOGY www.
aeroflex.
com General Description The Aeroflex Circuit Technology Model ACT4438-1 is a next generation monolithic transceiver which provide full compliance with MIL-STD-1553/1760 and data bus requirements in a Bumped Chip Carrier™ (BCC++) with the lowest standby power consumption and single power supply operation.
The Model ACT4438-1 performs the front-end analog function of inputting and outputting data through a transformer to a MIL-STD-1553/1760 data bus with a few external components.
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.
Shown 2X NOTE: BCC++ and Bumped Chip Carrier are Trademarks of Fujitsu Ltd.
Block Diagram (without Transformer) Transmitter The Transmitter section accepts bi-phase TTL data at the input and when coupled to the data bus with a 1:2.
5 transformer, isolated on the data bus side with two 55 Ohm fault isolation resistors for direct stub coupling.
The data bus signal produced for RISET = 2.
7K Ohm is typically 7.
5 Volts nominal P-P at A-A’, See Figure 5.
When both DATA and DATA inputs are held low, the transmitter output becomes a high impedance and is “removed” from the line.
In addition, an overriding “INHIBIT" input provides for the removal of the transmitter output from the line.
A logic “1” applied to the “INHIBIT” takes priority over the TX DATA OUT T...


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