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PDF ACT4419D Data sheet ( Hoja de datos )
| Número de pieza | ACT4419D | |
| Descripción | Dual Variable Amplitude Transceivers for MIL-STD-1553 | |
| Fabricantes | Aeroflex Circuit Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ACT4419D (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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ACT4419D
Dual Variable Amplitude Transceivers
for MIL-STD-1553
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
ACT4419D Dual Transceivers
TX DATA IN
TX DATA IN
TX INHIBIT
+5 V
GROUND
DRIVER
Channel A
Channel B
SHAPING
Channel B
OUTPUT
STAGE
VCONT
TX/RX
TX/RX
REFERENCE
COMP.
RX DATA OUT
INPUT
AMP
ACTIVE
FILTER
COMP.
RX DATA OUT
STROBE
Block Diagram (without Transformer, Channel A shown)
CIRCUIT TECHNOLOGY
www.aeroflex.com
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
eroflex Circuit Technology – Data Bus Modules For The Future © SCD4419D REV G 5/10/00
1 page  
Figure 3 – Transmitter Output Amplitude (VO)
vs VCONT Voltage
VO PK-PK @ A–A'
7.1
FS
5.68
Slope = ∆VO ÷ ∆VCONT
4.26
0.8FS
0.6FS
2.84 0.4FS
1.42
0
0
1 234
CONTROL VOLTAGE
0.2FS
VCONT dc
5
Figure 4 – Transmitter (TX) Output Offset
LAST BIT
Magnified View
OUTPUT OFFSET*
OUTPUT OFFSET*
2.5 µsec
*Offset measured at point A-A’ in Figure 5
Figure 5 – Typical Transformer Connection
70Ω 70Ω
ZO
TX DATA OUT
D.U.T
TX DATA OUT
RX DATA IN
RX DATA IN
1:2.5 55Ω
PB
A
Center
Tap
P’ B’
A’
55Ω
1:1.77 for
stub
coupling
VCONT = 0 – 5Vdc
Transformer:
Use Technitrol 1553-45 or Equivalent
Figure 6 – Power Dissipation vs. Duty Cycle
(Total hybrid with one channel transmitting
and the other in standby)
1600
1400
1200
1000
Maximum
800
Typical
600
400
200
0
0 10 20 30 40 50 60 70 80 90 100
DUTY CYCLE – PERCENT
Note: Vcc = 5 Volts, Vbus (Pt. A-A') at 7.1 Volts P-P
Configurations and Ordering Information
Model No.
DESC No. Receiver Data level Case
ACT4419-D *
Pending
Normally Low
DIP
ACT4419-DF *
Pending
Normally Low
Flat Package
* For 10V Control voltage consult factory.
Specs.
1553
1553
Configuration
Dual
Dual
Aeroflex Circuit Technology
5 SCD4419D REV G 5/10/00 Plainview NY (516) 694-6700
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet ACT4419D.PDF ] | |
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| Número de pieza | Descripción | Fabricantes |
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| ACT4419DF | Dual Variable Amplitude Transceivers for MIL-STD-1553 | Aeroflex Circuit Technology |
| ACT4419FP | Single Supply Variable Amplitude Transceivers for MIL-STD-1553 | Aeroflex Circuit Technology |
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