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Aeroflex Circuit Technology - Single Supply Variable Amplitude Transceivers for MIL-STD-1553

Numéro de référence ACT4419
Description Single Supply Variable Amplitude Transceivers for MIL-STD-1553
Fabricant Aeroflex Circuit Technology 
Logo Aeroflex Circuit Technology 





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ACT4419 fiche technique
ACT4419
Single Supply Variable Amplitude Transceivers
for MIL-STD-1553
Features
Preliminary
• First fully monolithic 5V only Variable Amplitude
Transceiver
• Lowest standby power
• 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 output
• Monolithic construction using dielectrically isolated(D.I.)
• Processed and screened to MIL-STD-883 specs
• Radiation Hard to 2.5 MRADS Total Dose
• DESC SMD pending
• Either 5V or 10V DC control line (Factory Set)
ACT4419FP & ACT4419 Plug In Transceivers
TX DATA IN
TX DATA IN
TX INHIBIT
+5 V
GROUND
STROBE
DRIVER
INPUT
AMP
SHAPING
REFERENCE
ACTIVE
FILTER
OUTPUT
STAGE
TX/RX
TX/RX
COMP.
RX DATA OUT
COMP.
RX DATA OUT
Block Diagram
CIRCUIT TECHNOLOGY
www.aeroflex.com
General Description
The Aeroflex Circuit Technology
model ACT4419 is a next generation
D.I. monolithic transceiver which
provides variable amplitude in full
compliance with MIL-STD-1553/1760
data bus requirements with the lowest
standby power consumption available
and one power supply operation.
The model ACT4419 performs the
front-end analog function of inputting
and outputting data through a
transformer to a MIL-STD-1553/1760
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 - 10 Vdc or 0 - 5 Vdc
control line at 1mA maximum input
current.
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
receivers, the data bus signal
produced is 7.5Volts nominal P-P at
A-A’ (See Figure 5). When both DATA
and DATA inputs are held low or high,
the transmitter output becomes a
high impedance and is “removed”
from the line. In addition, an
eroflex Circuit Technology – Data Bus Modules For The Future © SCD4419 REV B 10/21/99

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