Standard Products ARX4418 & ARX4417 Variable Amplitude Transceiver for MACAIR (A3818, A4905, A5232, A5690), MIL-STD-1553 & SAE-AS15531 www.aeroflex.com/Avionics March 31, 2005 FEATURES ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ARX4418 Transceiver meets Macair (A3818, A4905, A5232 and A5690) & MIL-STD-1553A/B ARX4417 Transceiver meets MIL-STD-1553 and SAE-AS15531 Bipolar supply ±15V to ±12V, Logic supply +5VDC Variable TX amplitude Variable receiver threshold capability Monolithic construction Voltage source output for higher bus drive power Designed for commercial, industrial and aerospace applications MIL-PRF-38534 compliant devices available Aeroflex-Plainview is a Class H & K MIL-PRF-38534 manufacturer DESC SMD 5962-9208503 GENERAL DESCRIPTION The Aeroflex Plainview transceiver model ARX4418 and is a new generation monolithic transceiver which provide full compliance with Macair and MIL-STD-1553 data bus requirements while providing variable amplitude control. The model ARX4418 and ARX4417 performs the front-end analog function of inputting and outputting data through a transformer to a MIL-STD-1553 or Macair data bus. The ARX4418 can be considered a "Universal" Transceiver in that it is compatible with Macair (A-3818, A-4905, A-5232 and A-5690), MIL-STD-1553A/B and SAE-AS1553. The ARX4417 is compatible with MIL-STD-1553A/B and SAE-AS15531. 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 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 low duty cycles. An optional receiver input threshold adjustment can be accomplished by the use of the ''External Threshold" terminals or by the use of the "Set Internal Threshold" terminals. Variable amplitude is adjusted with 0–10 VDC on the control pin. TRANSMITTER The Transmitter section accepts bi-phase TTL data at the input and when coupled to the data bus with a 1:1 transformer the data bus signal produced is 7.0 Volts minimum P-P at point 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 1 MHz 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. The transceiver utilizes an active filter to suppress harmonics above 1MHz. The Transmitter may be safely operated at 100% duty cycle for an indefinite period into a short circuited 1553 bus. 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 Vp-p and reject signals less than 0.6 Vp-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 Ohm pull-up to +5VDC is recommended. SCD4418 Rev C TX DATA OUT TX DATA IN DRIVER OUTPUT STAGE SHAPING TX DATA IN TX INHIBIT AMP CONTROL V+ GND CASE GND EXT THRESHOLD DATA DATA SET INTERNAL THRESHOLD COMP. DATA EXT. THRESHOLD DATA +5V -12V or -15V RX DATA IN RX DATA IN TX DATA OUT RX DATA OUT V- ACTIVE FILTER INPUT AMP COMP. RX DATA OUT +12V or +15V STROBE BLOCK DIAGRAM (WITHOUT TRANSFORMER 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 1 – TRANSMITTER LOGIC WAVEFORMS IDEALIZED 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 FIGURE 2 – RECEIVER LOGIC WAVEFORMS IDEALIZED SCD4418 Rev C 2 ABSOLUTE MAXIMUM RATINGS Operating Case Temperature -55°C to +125°C Storage Case Temperature -65°C to +150°C Power Supply Voltages +5VDC to +7VDC ±15VDC to ±18VDC Logic Input Voltage -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 = 0.4V IILD - -0.2 -0.4 mA "1" Input Current VIN = 2.7V IIHD - 1 40 µA "0" Input Voltage - VILD - - 0.7 V "1" Input Voltage - VIHD 2.0 - - V "0" Input Current VIN = 0.4V IILI - -0.2 -0.4 mA "1" Input Current VIN = 2.7V IIHI - 1.0 40 µA "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 mVp-p Note 2 ZOI 2K - - Ω RL = 140 Ω VO 28 30 36 V p-p - tR 200 250 300 nS Output offset at point A-A’ on Figure 5, 2.5 µS after midpoint crossing of the parity bit of the last word of a 660 µS message RL = 35 Ω VOS - - ±90 mV peak Delay from 50% point of TX DATA or TX DATA input to zero crossing of differential signal. (Note 1) ARX4418 tDTX - 330 450 nS - 240 360 nS INHIBIT CHARACTERISTICS Differential Output Noise, inhibit mode Differential Output Impedance (inhibited) OUTPUT CHARACTERISTICS Differential output level at point B–B’ Figure 5, Vcont = 10 Vdc, See Figure 6 for control voltage versus output level Rise and fall times (10% to 90% of p-p output) ARX4417 SCD4418 Rev C 3 ELECTRICAL CHARACTERISTICS – RECEIVER SECTION Parameter Condition Symbol Min Typ Max Unit f = 1MHz ZIN 10K - - Ω - VIDR - - 40 Vp-p Input Common Mode Voltage Range Note 1 VICR 10 - - Vp-p Common Mode Rejection Ratio Note 1 CMRR 40 - - dB Differential Input Impedance Differential Input Voltage Range STROBE CHARACTERISTICS (LOGIC "0" INHIBITS OUTPUT) "0" Input Current VS = 0.4V IIL - -0.2 -0.4 mA "1" Input Current VS = 2.7V IIH - 1 +40 µA "0" Input Voltage - VIL - - 0.7 V "1" Input Voltage - VIH 2.0 - - V Note 1 tSD - - 150 nS VTH 0.60 0.8 1.05 V p-p Strobe Delay (Turn-on or Turn-off) THRESHOLD CHARACTERISTICS (SINEWAVE INPUT ) Internal Threshold Voltage (referred to the bus) pins 6 and 11 grounded 100KHz -1MHz 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 VOH 2.5 3.6 - V IOL = 4 mA VOL - 0.35 0.5 V Note 1 tDRX - 300 450 nS POWER DATA POWER SUPPLY CURRENTS (POWER SUPPLIES SET AT +15V, -15V, +5V) Transmitter Standby ICC IEE IL 30 50 25 60 75 35 25% duty cycle ICC IEE IL 50 70 25 85 105 35 50% duty cycle ICC IEE IL 75 45 25 110 130 35 100% duty cycle ICC IEE IL 120 140 25 160 180 35 mA RECOMMENDED POWER SUPPLY VOLTAGE RANGE +V +11.4 Volts to +15.75 Volts -V -11.4 Volts to -15.75 Volts Logic Notes:1. 2. 3. 4. +4.5 Volts to +5.5 Volts Characteristics guaranteed by design, not production tested. Power on or off, measured from 75KHz to 1MHz at point A-A' and transformer self impedance of 3KΩ minimum at 1MHz. Specifications apply over the temperature range of -55°C to +125°C (Case Temperature) unless otherwise noted. All typical values are measured at +25°C. SCD4418 Rev C 4 tf * LAST BIT 90% Magnified View OUTPUT OFFSET* 6.5V P-P MIN 8.5V P-P MAX 0 volts 0 Volts OUTPUT OFFSET* 10% 2.5 µsec tr * *Offset measured at point A-A’ in Figure 5 * Rise and fall times measured at point A-A’ in Figure 5 FIGURE 3 – TRANSMITTER (TX) OUTPUT WAVEFORM FIGURE 4 – TRANSMITTER (TX) OUTPUT OFFSET VP-P @ B–B' 30 70Ω TYPICAL 27 70Ω TX DATA OUT OUTPUT AMPLITUDE 24 52.5Ω N1:N2 B A N1:N3 for stub coupling Ctr tap B’ 21 18 15 12 A’ Slope = 3VP-P/Vdc 9 6 TX DATA OUT 3 52.5Ω RX DATA IN RX DATA IN 0 Transformer turns ratios: N1:N2 = 1:1 N1:N3 = 1:0.71 Use Aeroflex 25T1553-1 0 1 2 3 4 POWER DISSIPATION WATTS 7 8 9 Vdc 10 FIGURE 6 – TRANSMITTER (TX) OUTPUT AMPLITUDE vs. CONTROL VOLTAGE 4.0 3.5 3.0 TYPICAL 2.5 2.0 1.5 1.0 0.5 0 6 CONTROL VOLTAGE FIGURE 5 – TYPICAL TRNSFORMER CONNECTION 0 5 10 20 30 40 50 60 70 80 90 100 DUTY CYCLE, PERCENT FIGURE 7 – TYPICAL POWER DISSIPATION vs. DUTY CYCLE SCD4418 Rev C 5 CONFIGURATIONS AND ORDERING INFORMATION * Model No. DSCC No. Receiver Data level ARX4418 5962-9208503HXX Normally Low ARX4418-FP 5962-9208503HYX ARX4418-LPFP - ARX4417 Normally High Configuration Specs. Plug In 1553 & Macair Flat Pack 1553 & Macair Low Profile Flat Pack 1553 & Macair Plug In 1553 ARX4417-FP Flat Pack ARX4417-LPFP Low Profile Flat Pack * Not for new designs. See ACT4418N Series. PACKAGE CONFIGURATION OUTLINE 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 MIN 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. PLAINVIEW, NEW YORK Toll Free: 800-THE-1553 Fax: 516-694-6715 INTERNATIONAL Tel: 805-778-9229 Fax: 805-778-1980 NORTHEAST Tel: 603-888-3975 Fax: 603-888-4585 SE AND MID-ATLANTIC Tel: 321-951-4164 Fax: 321-951-4254 WEST COAST Tel: 949-362-2260 Fax: 949-362-2266 CENTRAL Tel: 719-594-8017 Fax: 719-594-8468 www.aeroflex.com [email protected] Aeroflex Microelectronic Solutions reserves the right to change at any time without notice the specifications, design, function, or form of its products described herein. All parameters must be validated for each customer's application by engineering. No liability is assumed as a result of use of this product. No patent licenses are implied. Our passion for performance is defined by three attributes represented by these three icons: solution-minded, performance-driven and customer-focused SCD4418 Rev C 6