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PDF ACT4808LD Data sheet ( Hoja de datos )
| Número de pieza | ACT4808LD | |
| Descripción | ACT4808 DUAL TRANSCEIVERS FOR MACAIR A3818/ A5690/ A5232/ A4905 & MIL-STD-1553 | |
| Fabricantes | Aeroflex Circuit Technology | |
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ACT4808 Dual Transceivers for
MACAIR A3818, A5690, A5232, A4905
& MIL-STD-1553
Features
• ACT4808 Dual Transceiver meets
MIL-STD-1553A & B, Macair A3818, A5690, A5232
and A4905 specs
• New Low Power Model –L Available
• Operates with ±12V to ±15V & +5V Power Supplies
• Voltage source output for higher bus drive power
• Plug-in or Flat Package
• Monolithic construction using linear ASICs
• Processed and Screened to MIL-STD-883 specs
ACT4808 Transceiver
TX DATA IN
TX DATA IN
TX INHIBIT
DRIVER
SHAPING
OUTPUT
STAGE
V+
TX DATA OUT
TX DATA OUT
COMP.
RX DATA OUT
+5 V
VEE
RX DATA IN
RX DATA IN
VCC
STROBE
INPUT
AMP
V-
ACTIVE
FILTER
COMP.
RX DATA OUT
Block Diagram (without Transformer), 1/2 of unit shown
CIRCUIT TECHNOLOGY
www.aeroflex.com/act1.htm
General Description:
The Aeroflex Laboratories transceiver
model ACT4808 is a new generation
Dual monolithic transceiver which
provides full compliance with Macair
and MIL-STD-1553 data bus
requirements
The model ACT4808 performs the
front-end analog function of inputting
and outputting data through a
transformer to a MIL-STD-1553 or
Macair data bus. The ACT4808 can
be considered a "Universal"
Transceiver in that it is compatible
with MIL-STD-1553A & B, Macair
A-3818, A-4905, A-5232 and A-5690.
Design of this transceiver 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. The ACT4808
series active filter design has
additional high frequency roll-off to
provide the required Macair low
harmonic distortion waveform without
increasing the pulse delay
characteristics significantly.
Efficient transmitter electrical and
thermal design provides low internal
power dissipation and heat rise at
high and well as low duty cycles.The
receiver input threshold is set
Internally.
Transmitter
The Transmitter section accepts
bi-phase TTL data at the input and
when coupled to the data bus as per
Figure 3 or 4 and by two 70 Ohm
terminations (ZO), the data bus signal
produced is 6.5 Volts minimum P-P at
A-A’. When both DATA and DATA
eroflex Circuit Technology – Data Bus Modules For The Future © SCD4808 REV E 12/9/99
1 page  
Typical Hybrid Power Dissipation*, Per Channel
Power
Supply
Conditions
Condition
Std Version
Standby
100%
Duty
Cycle
PSC1
VCC = +15V
VEE = -15V
VL = +5V
PSC2
Pt. B - B’
ZO = 70 Ω,
VO = 29 VPK-PK
Bit Pattern = FFFFHEX
Fig. 4
1.325
VCC = +15V
VEE = -12V
VL = +5V
1.118
PSC3
VCC = +12V
VEE = -12V
VL = +5V
1.085
* See Aeroflex Application note# 112 for reference.
3.250
3.142
2.472
-L Version
Standby
100%
Duty
Cycle
0.540
2.167
0.465
1.852
0.450
1.600
Unit
Watts
Recommended Power Supply Voltage Range
+V
-V
Logic
+11.4 Volts to +15.75 Volts
-11.4 Volts to -15.75 Volts
+4.5 Volts to +5.5 Volts
Notes:
1. VCC = +15Volts ±0.75V, VEE = -15Volts ±0.75V, VIL = +5Volts ±0.5V, TC = -55°C to +125°C, unless otherwise
specified.
2. All typical values are measured at +25°C.
3. Characteristics guaranteed by design, not production tested.
4. Power ON/OFF, measured from 75KHz to 1MHz at Point A-A’ Figure 4, in accordance with MIL-STD-1553B
paragraph 4.5.2.2.2.3.
5. At point A-A’ on Figure 3 or 4, 2.5 µS after midpoint crossing of the parity bit of the last word of a 660 µS message.
6. Receiver skew is defined as the time from the rising edge of RX DATA OUT to the rising edge of RX DATA OUT
minus 500 nS, with a sine wave input of 3 VPK-PK at 1MHz driven into Pt. B-B’ of Figure 4 or 2.1 VPK-PK at 1MHz
driven into Pt. B-B’ of Figure 3. The specification maximum is guaranteed for TA = 25°C only. Standard TTL loads
applied to RX DATA Outputs.
7. This test is peformed while the Transceiver is reading its own transmission. This condition is called "Wraparound".
Standard TTL loads applied to RX DATA Outputs.
Aeroflex Circuit Technology
5 SCD4808 REV E 12/9/99 Plainview NY (516) 694-6700
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet ACT4808LD.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
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| ACT4808LDF | ACT4808 DUAL TRANSCEIVERS FOR MACAIR A3818/ A5690/ A5232/ A4905 & MIL-STD-1553 | Aeroflex Circuit Technology |
| ACT4808LDFI | ACT4808 DUAL TRANSCEIVERS FOR MACAIR A3818/ A5690/ A5232/ A4905 & MIL-STD-1553 | Aeroflex Circuit Technology |
| ACT4808LDI | ACT4808 DUAL TRANSCEIVERS FOR MACAIR A3818/ A5690/ A5232/ A4905 & MIL-STD-1553 | Aeroflex Circuit Technology |
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