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) ARX 4418FP/4418 Transceivers TX DATA OUT TX DATA IN DRIVER OUTPUT STAGE SHAPING TX DATA IN TX DATA OUT V+ TX INHIBIT AMP CONTROL EX THRESHOLD DATA DATA SET INTERNAL THRESHOLD DATA COMP. EX THRESHOLD DATA +5 V -12V or -15V RX DATA IN RX DATA IN RX DATA OUT V- INPUT AMP ACTIVE FILTER COMP. +15V or +12V STROBE RX DATA OUT 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. Block Diagram (without Transformer) eroflex Circuit Technology – Data Bus Modules For The Future © 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 Aeroflex Circuit Technology 2 SCD4418 REV B 10/18/99 Plainview NY (516) 694-6700 Absolute Maximum Ratings Operating Case Temperature -55°C to +125°C Storage Case Temperature -65°C to +150 °C Power Supply Voltages ±15 V P.S. to ±18V MAX Logic Input Voltage +5 V P.S. to +7V MAX -0.3 V to +5.5 V Receiver Differential Input ±40 V Receiver Input Voltage (Common Mode) ±10V Driver Peak Output Current 300 mA Total Package Power Dissipation over the Full Operating Case Temperature Range 2.4 Watts Power Dissipation for hottest die, (100% duty cycle) 600 mW Maximum junction to case temperature rise for the hottest device (100 % duty cycle) 36°C Junction-Case, Thermal Resistance for hottest device 60°C/W Electrical Characteristics, Transmitter Section Input Characteristics, TX DATA in or TX DATA in Parameter Condition Symbol Min Typ Max Unit "0" Input Current VIN = 0.4 V IILD -0.2 -0.4 mA "1" Input Current VIN = 2.7 V IIHD 1.0 40 µA 0.7 V "0" Input Voltage VILD "1" Input Voltage VIHD 2.0 -0.2 -0.4 mA 1.0 40 µA V Inhibit Characteristics "0" Input Current VIN = 0.4V IILI "1" Input Current VIN = 2.7V IIHI - "0" Input Voltage VILI - - 0.7 V "1" Input Voltage VIHI 2 - - V Delay from TX inhibit, (0→1) to inhibited output Note 1 tDXOFF - 400 500 nS Delay from TX inhibit, (1→0) to active output Note 1 tDXON - 400 500 nS VNOI - 0.8 10 mV p-p Note 2 ZOI 2K - - Ω R L = 140 Ω VO 28 30 36 V p-p tR 200 250 300 nS VOS - - ±90 mV peak - 330 450 nS - - 360 nS Differential output noise, inhibit mode Differential output impedance (inhibited) 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 µS after midpoint crossing of the parity bit of the last word of a 660 µS message Delay from 50% point of TX DATA or TX DATA input to zero crossing of differential signal. (Note 1) Aeroflex Circuit Technology RL = 35 Ω ARX4418 tDTX ARX4417 3 SCD4418 REV B 10/18/99 Plainview NY (516) 694-6700 Electrical Characteristics, Receiver Section Parameter Differential Input Impedance Condition Symbol Min Typ f = 1MHz ZIN 20K 100K Differential Input Voltage Range Max Unit W 40 VIDR V p-p Input Common Mode Voltage Range Note 1 VICR 10 V p-p Common Mode Rejection Ratio Note 3 Note 1 CMRR 40 dB Strobe Characteristics (Logic "0" inhibits output) -0.2 -0.4 mA -1.0 +40 µA - - 0.7 V VIH 2.0 - - V tSD - - 150 nS "0" Input Current VS = 0.4 V IIL "1" Input Current VS = 2.7V IIH - "0" Input Voltage VIL "1" Input Voltage Strobe Delay (turn-on or turn-off) Note 1 Threshold Characteristics (Sinewave input) Internal Threshold Voltage (referred to the bus) pins 6 and 11 grounded 100KHz1MHz VTH 0.60 0.8 1.05 V p-p External threshold control (pins 6 &11 open, resistors from pin 5 and 12 to ground) Max R = 10KΩ RTH / VTH - 4000 - Ω / V p-p Output Characteristics, RX DATA and RX DATA "1" State IOH = -0.4 mA VOH 2.5 3.6 - V "0" State IOL = 4 mA VOL - 0.35 0.5 V Note 1 tDRX - 300 450 nS Delay, (average) from differential input zero crossings to RX DATA and RX DATA output 50% points Power Data Power Supply Currents (Power supplies set at +15V, -15V, +5V) Duty Cycle +V -V Transmitter Standby 60mA 75mA 25% duty cycle Note 1 80mA 95mA 50% duty cycle 105mA 120mA 100% duty cycle Note 1 160mA 180mA 5V 35mA Recommended Power Supply Voltage Range Aeroflex Circuit Technology +V +11.4 Volts to +15.75 Volts -V -11.4 Volts to -15.75 Volts Logic +4.5 Volts to + 5.5 Volts 4 SCD4418 REV B 10/18/99 Plainview NY (516) 694-6700 Figure 3 – Transmitter (TX) Output Amplitude vs Control Voltage Figure 4 – Transmitter (TX) Output offset VP-P @ B–B' 30 LAST BIT 27 OUTPUT AMPLITUDE 24 Magnified View 21 Typical 18 OUTPUT OFFSET * OUTPUT OFFSET * 0 Volts 15 12 9 2.5 µsec Slope = 3VP-P/Vdc 6 3 0 0 1 2 3 4 5 6 7 8 9 *Offset measured at point A-A’ in Fig 5 Vdc 10 CONTROL VOLTAGE Figure 5 – Typical Transformer Connection 70Ω Figure 6 – Power Dissipation vs Duty Cycle 70Ω TX DATA OUT POWER DISSIPATION WATTS 4.0 52.5Ω N1:N2 B A Center tap B’ N1:N3 for stub coupling A’ TX DATA OUT 52.5Ω RX DATA IN 3.5 3.0 2.5 (TYPICAL) 2.0 1.5 1.0 0.5 RX DATA IN 0 0 Transformer turns ratios: N1:N2 = 1:1 N1:N3 = 1:0.707 Use Aeroflex 25T1553-1 10 20 30 40 50 60 70 80 90 100 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 3KΩ minimum at 1MHz. 3. Specifications apply over the temperature range of -55°C to +125°C (Case Temperature) unless otherwise noted. 4. All typical values are measured at +25°C. 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 5 SCD4418 REV B 10/18/99 Plainview NY (516) 694-6700 CIRCUIT TECHNOLOGY PLUG-IN PACKAGE 1.27 MAX 1.10 24 13 1.27 MAX 1.10 1 12 0.175 MAX 0.24 MIN 0.018 DIA. ±0.002 FLAT PACKAGE Pin Function 0.100 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) 1.27 MAX 0.017 ±0.002 Pin 1 & ESD Designator 1.27 MAX 0.10 Typ 0.400 MAX 2 sides 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 0.100±0.002 tolerance, non-cumulative, each row. Configurations and Ordering Information Model No. DESC No. Receiver Data level Case Specs. ARX 4418 5962-9208503HXX Normally Low Plug In 1553 & Macair ARX 4418-FP 5962-9208503HYX Normally Low Flat Pack 1553 & Macair ARX 4418-LPFP 5962-TBD Normally Low Low Profile Flat Pack 1553 & Macair ARX 4417 5962-TBD Normally High Plug In 1553 ARX 4417-FP 5962-TBD Normally High Flat Pack 1553 ARX 4417-LPFP 5962-TBD Normally High Low Profile Flat Pack 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