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ARX 4418 & 4417 Variable Amplitude Transceivers for MACAIR A3818, A5690, A5232, A4905 & MIL-STD-1553
Features
* ARX 4418 Transceiver meets MIL-STD-1553A&B, Macair A3818, A4905, A5232 and A5690 specs * ARX 4417 Transceiver meets MIL-STD-1553 specs * Operates with 15 Volts to 12 Volts power supply * Voltage source output for higher bus drive power * Plug-in, flat package or low profile flat package * Monolithic construction using linear ASICs * Variable receiver threshold capability * Variable TX Amplitude * Processed and screened to Mil-STD-883 specs * DESC SMD (Standard Military Drawing)
CIRCUIT TECHNOLOGY
www.aeroflex.com
General Description
The Aeroflex Laboratories transceiver models ARX 4418 and ARX 4417 are new generation monolithic transceivers which provide full compliance with Macair and MIL-STD-1553 data bus requirements while providing variable amplitude control. The model ARX 4418 and model ARX 4417 perform the front-end analog function of inputting and outputting data through a transformer to a MIL-STD-1553 or Macair data bus. The ARX 4418 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. The ARX 4417 is compatible with MIL-STD-1553A/B. 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. The ARX4418 series active filter design has additional high frequency roll-off to provide the required Macair low harmonic distortion waveform without increasing the pulsedelay characteristics significantly. Efficient transmitter electrical and thermal design provides low internal power dissipation and heat rise at high and well as low duty cycles. Variable amplitude is adjusted with 0-10 Vdc on the control pin. An optional receiver input threshold adjustment can be accomplished by the use of the "Set Internal Threshold" terminals.
ARX 4418FP/4418 Transceivers
TX DATA OUT TX DATA IN TX DATA IN V+ TX INHIBIT EX THRESHOLD DATA DATA SET INTERNAL THRESHOLD DATA EX THRESHOLD DATA +5 V -12V or -15V RX DATA IN RX DATA IN +15V or +12V STROBE INPUT AMP COMP. RX DATA OUT AMP CONTROL DRIVER SHAPING OUTPUT STAGE TX DATA OUT
V-
ACTIVE FILTER
COMP.
RX DATA OUT
Block Diagram (without Transformer) eroflex Circuit Technology - Data Bus Modules For The Future (c) SCD4418 REV B 10/18/99
Transmitter
The Transmitter section accepts bi-phase TTL data at the input and when coupled to the data bus with a 1:1 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 7.0 volts minimum 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 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 condition of the data inputs and disables the transmitter. (See Transmitter Logic Waveforms, Figure 1.) The transmitter utilizes an active filter to suppress harmonics above 1MHz to meet Macair specifications A-3818, A-4905, A-5232 and A-5690. The transmitter may be safely operated for an indefinite period at 100% duty cycle into a data bus short circuit.
Receiver
The Receiver section accepts bi-phase differential data at the input and produces two TTL signals at the output. The outputs are DATA and DATA, and represent positive and negative excursions of the input
beyond a pre-determined threshold. (See Receiver Logic Waveforms, Figure 2.) The internal threshold is nominally set to detect data bus signals exceeding 1.05 Volts P-P and reject signals less than 0.6 volts P-P when used with a 1:1 turns ratio transformer. (See Figure 5 for transformer data and typical connection.) This threshold setting can be held by grounding the appropriate pins or modified with the use of external resistors. A low level at the Strobe input inhibits the DATA and DATA outputs. If unused, a 2K pull-up to +5 Volts is recommended.
Figure 1 - Transmitter Logic Waveforms
DATA IN
DATA IN
INHIBIT
LINE TO LINE OUTPUT NOTES: 1. Line to line waveforms illustrate Macair signals, MIL-STD-1553 signals are trapezoidal 2. DATA and DATA inputs must be complementary waveforms or 50% duty cycle average, with no delays between them. 3. DATA and DATA must be in the same state during off time (both high or low).
Figure 2 - Receiver Logic Waveforms
LINE TO LINE INPUT
DATA OUT
DATA OUT
Note overlap
NOTE: Waveforms shown are for normally low devices. For normally high receiver output level devices, the receiver outputs are swapped as shown by the dashed lines
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SCD4418 REV B 10/18/99 Plainview NY (516) 694-6700
Absolute Maximum Ratings
Operating Case Temperature Storage Case Temperature Power Supply Voltages Logic Input Voltage Receiver Differential Input Receiver Input Voltage (Common Mode) Driver Peak Output Current Total Package Power Dissipation over the Full Operating Case Temperature Range Power Dissipation for hottest die, (100% duty cycle) Maximum junction to case temperature rise for the hottest device (100 % duty cycle) Junction-Case, Thermal Resistance for hottest device -55C to +125C -65C to +150 C 15 V P.S. to 18V MAX +5 V P.S. to +7V MAX
-0.3 V to +5.5 V 40 V 10V 300 mA 2.4 Watts 600 mW 36C 60C/W
Electrical Characteristics, Transmitter Section
Input Characteristics, TX DATA in or TX DATA in Parameter Condition
"0" Input Current "1" Input Current "0" Input Voltage "1" Input Voltage VIN = 0.4 V VIN = 2.7 V
Symbol
IILD IIHD VILD VIHD
Min
Typ
-0.2 1.0
Max
-0.4 40 0.7
Unit
mA A V V
2.0
Inhibit Characteristics
"0" Input Current "1" Input Current "0" Input Voltage "1" Input Voltage Delay from TX inhibit, (01) to inhibited output Delay from TX inhibit, (10) to active output Differential output noise, inhibit mode Differential output impedance (inhibited) Note 2 Note 1 Note 1 VIN = 0.4V VIN = 2.7V IILI IIHI VILI VIHI tDXOFF tDXON VNOI ZOI 2 2K -0.2 1.0 400 400 0.8 -0.4 40 0.7 500 500 10 mA A V V nS nS mV p-p
Output Characteristics
Differential output level at point B-B' Fig 5, Vcont = 10 Vdc, See Fig 3 for control voltage versus output level Rise and fall times (10% to 90% of p-p output) Output offset at point A-A' on Fig 5, 2.5 S after midpoint crossing of the parity bit of the last word of a 660 S message Delay from 50% point of TX DATA or TX DATA input to zero crossing of differential signal. (Note 1)
Aeroflex Circuit Technology
RL = 140
VO tR
28 200 -
30 250 330 -
36 300 90 450 360
V p-p nS mV peak nS nS
RL = 35 ARX4418
VOS
tDTX ARX4417
3
-
SCD4418 REV B 10/18/99 Plainview NY (516) 694-6700
Electrical Characteristics, Receiver Section
Parameter
Differential Input Impedance Differential Input Voltage Range Input Common Mode Voltage Range Common Mode Rejection Ratio Note 3 Note 1 Note 1
Condition
f = 1MHz
Symbol
ZIN VIDR VICR CMRR
Min
20K
Typ
100K
Max
40
Unit
W V p-p V p-p dB
10 40
Strobe Characteristics (Logic "0" inhibits output)
"0" Input Current "1" Input Current "0" Input Voltage "1" Input Voltage Strobe Delay (turn-on or turn-off) Note 1 VS = 0.4 V VS = 2.7V IIL IIH VIL VIH tSD 2.0 -0.2 -1.0 -0.4 +40 0.7 150 mA A V V nS
Threshold Characteristics (Sinewave input)
Internal Threshold Voltage (referred to the bus) pins 6 and 11 grounded External threshold control (pins 6 &11 open, resistors from pin 5 and 12 to ground) 100KHz1MHz Max R = 10K VTH RTH / VTH 0.60 0.8 4000 1.05 V p-p
/ V p-p
Output Characteristics, RX DATA and RX DATA
"1" State "0" State Delay, (average) from differential input zero crossings to RX DATA and RX DATA output 50% points IOH = -0.4 mA IOL = 4 mA Note 1 VOH VOL tDRX 2.5 3.6 0.35 300 0.5 450 V V nS
Power Data Power Supply Currents (Power supplies set at +15V, -15V, +5V)
Duty Cycle
Transmitter Standby 25% duty cycle Note 1 50% duty cycle 100% duty cycle Note 1
+V
60mA 80mA 105mA 160mA
-V
75mA 95mA 120mA 180mA
5V
35mA
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
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SCD4418 REV B 10/18/99 Plainview NY (516) 694-6700
Figure 3 - Transmitter (TX) Output Amplitude vs Control Voltage
VP-P @ B-B' 30 27 24 OUTPUT AMPLITUDE 21 18 15 12 9 6 3 0 0 1 2 3 4 5 6 7 8 9 Vdc 10 Slope = 3VP-P/Vdc Typical
Figure 4 - Transmitter (TX) Output offset
LAST BIT
Magnified View
OUTPUT OFFSET*
0 Volts
OUTPUT OFFSET*
2.5 sec
*Offset measured at point A-A' in Fig 5
CONTROL VOLTAGE
Figure 5 - Typical Transformer Connection
70 70
Figure 6 - Power Dissipation vs Duty Cycle
4.0 N1:N2 B 52.5 A Center tap B' TX DATA OUT 52.5 RX DATA IN RX DATA IN Transformer turns ratios: N1:N2 = 1:1 N1:N3 = 1:0.707 Use Aeroflex 25T1553-1 0 0 10 20 30 40 50 60 70 80 90 100 A' N1:N3 for stub coupling POWER DISSIPATION WATTS 3.5 3.0 2.5 (TYPICAL) 2.0 1.5 1.0 0.5
TX DATA OUT
DUTY CYCLE, PERCENT
NOTES 1. Characteristics guaranteed by design, not production tested. 2. Power on or off, measured from 75KHz to 1MHz at point A-A' and transformer self impedance of 3K minimum at 1MHz. 3. Specifications apply over the temperature range of -55C to +125C (Case Temperature) unless otherwise noted. 4. All typical values are measured at +25C.
The information contained in this data sheet is believed to be accurate; however, Aeroflex Circuit Technology. assumes no responsibility for its use, and no license or rights are granted by implication or otherwise in connection therewith.
Aeroflex Circuit Technology
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SCD4418 REV B 10/18/99 Plainview NY (516) 694-6700
CIRCUIT TECHNOLOGY
PLUG-IN PACKAGE
1.27 MAX 1.10 24 1.27 MAX 13
Pin Function
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 TX DATA OUT TX DATA OUT TX GND (+5) +15V (TX) EXT. DATA THRES INT. DATA THRES RX DATA OUT STROBE RX GND (+5V) RXDATA OUT INT DATA THRES EXT DATA THRES +15V (RX) AMP CONTROL RX DATA IN RX DATA IN GND CASE GND -15V (RX) +5V TX INHIBIT TX DATA IN TX DATA IN -15V(TX)
FLAT PACKAGE
1.27 MAX 0.017 0.002 Pin 1 & ESD Designator 1.27 MAX 0.10 Typ 0.400 MAX
1.10
1
12
2 sides
0.175 0.24 MIN 0.018 DIA. 0.002 MAX 0.100
0.009 0.002 0.167 for Low Profile Flat Pack 0.200 for Std Flat Pack 0.080 0.015
Notes 1. Dimensions shown are in inches. 2. Pins are equally spaced at 0.1000.002 tolerance, non-cumulative, each row.
Configurations and Ordering Information
Model No.
ARX 4418 ARX 4418-FP ARX 4418-LPFP ARX 4417 ARX 4417-FP ARX 4417-LPFP
DESC No.
5962-9208503HXX 5962-9208503HYX 5962-TBD 5962-TBD 5962-TBD 5962-TBD
Receiver Data level
Normally Low Normally Low Normally Low Normally High Normally High Normally High
Case
Plug In Flat Pack Low Profile Flat Pack Plug In Flat Pack Low Profile Flat Pack
Specs.
1553 & Macair 1553 & Macair 1553 & Macair 1553 1553 1553
Specifications subject to change without notice.
Aeroflex Circuit Technology 35 South Service Road Plainview New York 11803
Aeroflex Circuit Technology
Telephone: (516) 694-6700 FAX: (516) 694-6715 Toll Free Inquiries: 1-(800)THE-1553
6
SCD4418 REV B 10/18/99 Plainview NY (516) 694-6700

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