4810

ARX4810 AEROFLEX | Alldatasheet

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Technical content

Features

• World’s smallest dual "Universal Transceiver" 0.3" X 1.2" Package  Dual transceiver meets military data bus requirements, MIL-STD-1553 and Macair specs  Low power dissipation at full output power  +5 / -15 Volt Power Supply Operation  Voltage source output for higher bus drive power  Monolithic construction using linear ASICs  Processed and screened to MIL-STD-883 specs  MIL-PRF-38534 Compliant Devices Available  DESC SMD (Standard Military Drawing) General Description The Aeroflex Circuit Technology Models ARX4810 and ARX4810FP are new generation monolithic transceivers which provide full compliance with MIL-STD-1553 and Macair data bus requirements in the smallest packages with low power consumption and two power supply operation. The dual channel Model ARX4810 and Model ARX4810FP perform the front-end analog function of inputting and outputting data through a transformer to a MIL-STD-1553 or Macair 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. Each channel of the dual transceiver is completely separate from the other and fully independent. This includes power leads as well as signal lines. Hence, each channel may be connected to a different data bus with no interaction. 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 ARX4810 Dual Universal T ransceiver SHAPING OUTPUT ST AGE COMP . COMP .REFERENCE ACTIVE FIL TER INPUT AMP DRIVERTX DATA IN TX DA TA IN TX INHIBIT +5 V STROBE TX/RX TX/RX RX DAT A OUT RX DAT A OUT -15 V to -12V GROUND ARX4810 & 4810FP Universal Dual Transceivers for MIL-STD-1553 & MACAIR A3818, A5690, A5232 & A4905 Block Diagram (without transformer), 1/2 of unit shown eroflex Circuit Technology – Data Bus Modules For The Future © SCD4810 REV B 8/12/98

Aeroflex Circuit Technology SCD4810 REV B 8/12/98 Plainview NY (516) 694-6700 2

70 Ohm terminations plus additional

receivers, the data bus signal produced is 7.5 volts nominal 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 Waveform, Figure 1.) The transceiver 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 at 100% duty cyclefor an indefinite period into a short circuited, the 1553 or Macair 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 Waveform Figure 2). The pre-set internal thresholds will detect data bus signals exceeding

1.150 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.) DATA IN DATA IN INHIBIT LINE TO LINE OUTPUT NOTES: 1. DA TA and DA T A inputs must be complementary waveforms or 50% duty cycle average, with no delays between them. 2. DA TA and DA T A must be in the same state during off time (both high or low). Figure 1 – Transmitter Logic Waveforms Figure 2 – Receiver Logic Waveforms Note overlap NOTE: Waveforms shown are for normally low devices. For normally high receiver output the receiver outputs are swapped as shown by the dashed lines. , level devices, LINE TO LINE INPUT DATA OUT DATA OUT

Aeroflex Circuit Technology SCD4810 REV B 8/12/98 Plainview NY (516) 694-6700 3 Note 1. Characteristics guaranteed by design, not production tested . Note 2. Measured at 1MHz from bus side of transformer after contribution from transformer is accounted for. Absolute Maximum Ratings Operating case temperature -55 °C to +125°C Storage case temperature -65 °C to +150 °C Negative Power supply Voltage -15 V P .S. to -18V MAX Positive Power Supply Voltage -0.3 V to +5.5 V Receiver differential input ±10 V Receiver input voltage (common mode) ±5 V Driver peak output current 300 mA Total package power dissipation over the full operating case temperature rise

4 Watts

(Note. Normal operation conditions require one transmitter on and the other off at any given time, with a maximum dissipation of 3.2 watts.) Maximum junction to case temperature rise for the hottest device 6° C Thermal resistance for the hottest device, junction to bottom of case 3° C/W Electrical Characteristics, Driver Section Input Characteristics, TX DATA in or TX DATA in Parameter Condition Symbol Min Typ Max Unit "0" Input Current V IN = 0.4 V I ILD -0.25 -0.4 mA "1" Input Current V IN = 2.7 V I IHD 14 0 µ A "0" Input Voltage V IHD 0.7 V "1" Input Voltage V IHD 2.0 V Inhibit Characteristics "0" Input Current V IN = 0.4V I ILI -0.25 -0.4 mA "1" Input Current V IN = 2.7V I IHI 1.0 40 µA "0" Input Voltage V ILI 0.7 V "1" Input Voltage V IHI 2V Delay from TX inhibit,(0¡1) to inhibited output Note 1 tDXOFF 240 350 nS Delay from TX inhibit, (1 ¡0) to active output Note 1 tDXON 210 350 nS Differential output noise, inhibit mode V NOI 21 0 m V p - p Differential output impedance (inhibited) Note 2 Z OI 7K Ω Output Characteristics Differential output level R L = 35Ω V O 6 6.8 7.7 V p-p Rise and fall times (10% to 90% of p-p output) tR 200 240 300 nS 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 660µS message R L = 35Ω V OS ±90 mV peak Delay from 50% point of TX DATA or TX DATA input to zero crossing of differential signal Note 1 tDTX 260 350 nS

Aeroflex Circuit Technology SCD4810 REV B 8/12/98 Plainview NY (516) 694-6700 4 Note 3. Measured at the bus side of the transformer, including the contribution from the transformer. Note 4. Vcc= 5 Volts ±0.1 V, for all measurements unless otherwise specified. Note 5. Specifications apply over the case temperature range of -55 °C to +125°C unless otherwise specfied. Note 6. All typical values are measured at +25 °C Note 7. A 1uf, 10 Volt capacitor is required on the TX/RX terminal for each transceiver as shown in Figure 5. A Sprague 194D type (.05" W x .10" L x .05" H ) is suggested. Electrical Characteristics, Receiver Section Parameter Condition Sym Min Typ Max Unit Differential Input Impedance f = 1MHz Z IN 20K Ω Differential Voltage Range V IDR ±4 V peak Input Common Mode Voltage Range Note 1 V ICR ±2.5 V peak Common Mode Rejection Ratio Note 3 Note 1 CMRR 40 dB Strobe Characteristics (Logic "O" inhibits output) if not used, a 1K pullup to 5 V is recommended "0" Input Current V S = 0.4 V I IL -0.25 -0.4 mA "1" Input Current Vs = 2.7V I IH 1 +40 µA "0" Input Voltage V IL 0.7 V "1" Input Voltage V IH 2.0 V Strobe Delay (turn-on or turn-off) Note 1 t SD 10 78 nS Threshold Characteristics (Sinewave input ) Input Threshold Voltage (referred to the bus) 100KHz-1MHz VTH 0.60 0.8 1.15 V P-P Output Characteristics, RX DATA and RX DATA "1" State IOH = -0.4 mA V OH 2.5 3.4 V "0" State IOL = 4 mA V OL 0.3 0.5 V Delay, (average) from differential input zero cross- ings to RX DATA and RX DATA output 50% points tDRX 280 450 nS Power Data Maximum Currents, per channel (Power supplies used are -15V, and +5V) Duty Cycle -V +V and Logic Transmitter Standby 42 mA 48 mA 25% duty cycle, Note 1 85mA 90 mA 50% duty cycle 105 mA 110 mA 100% duty cycle, Note 1 140 mA 145 mA Power supply Voltages -V -14.25 Volts to -15.75 Volts Logic and +V 4.5 Volts to 5.5 Volts

Aeroflex Circuit Technology SCD4810 REV B 8/12/98 Plainview NY (516) 694-6700 5 Configurations and Ordering Information Model No. DESC No. Receiver Data level Case Configuration ARX4810 5962-TBA Normally High Plug-In Dual ARX4810-201-1 5962-9550501HXC Normally High Flat Pkg (.175 Lead) Dual ARX4810-201-2 5962-9550501HXA Normally High Flat Pkg (.175 Lead) Dual ARX4810-201-3 5962-9550501HXA or C Normally High Flat Pkg (.175 Lead) Dual ARX4810-203-1 5962-9550501HYC Normally High Flat Pkg (.300 Lead) Dual ARX4810-203-2 5962-9550501HYA Normally High Flat Pkg (.300 Lead) Dual ARX4810-203-3 5962-9550501HYA or C Normally High Flat Pkg (.300 Lead) Dual ARX4811 5962-TBA Normally Low Plug-In Dual ARX4811-2 5962-TBA Normally Low Flat Package Dual Figure 3 – Transmitter (TX) Output Wave form Figure 4 – Transmitter (TX) Output offset Figure 5 – Typical Transformer connection Figure 6 – Power Dissipation vs. Duty Cycle 6.5V P-P MIN 8.5V P-P MAX 90% 10% tr* tf* * Rise and fall times measured at point A-A ’ in Fig 5

0 Volts

OUTPUT OFFSET * OUTPUT OFFSET * LAST BIT 2.5 µsec *Offset measured at point A-A’ in Fig 5 N1:N2 A A’B’ BTX DA TA OUT TX DA TA OUT RX DATA IN RX DATA IN 70Ω 70Ω 52.5Ω 52.5Ω Ctr tap Transformer turns ratios: N1:N2 = 1:1 N1:N3 = 1:0.71 Use Aeroflex 25T1553-1 N1:N3 for stub coupling 0 volts Magnified View (per channel) D.U.T 1uf, 10 V 0 10 20 30 40 50 60 70 80 90 100 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 DUTY CYCLE, PERCENT POWER DISSIPATION WATTS TYPICAL

Aeroflex Circuit Technology SCD4810 REV B 8/12/98 Plainview NY (516) 694-6700 6 Specifications subject to change without notice. CIRCUIT TECHNOLOGY Package Dimensions and Pin Outs Notes 1. Dimensions shown are in inches

1.200 MAX

1.000 10 Equal Spaces @.100 .018 ±.002 .175 MIN .065 ±.015 .140 MAX .010 ±.002 TYP 1.000 10 Equal Spaces @.100 .310 MAX .300 ±.010 .170 MIN .140 MAX Aeroflex Circuit Technology

35 South Service Road

Telephone: (516) 694-6700 FAX: (516) 694-6715 Toll Free Inquiries: 1-(800) THE-1553 Pin Numbers & Functions Pin # Function Channel

1 INHIBIT A

5 GROUND A

B 9T X / R X B 10 -15V B 11 +5V B

12 INHIBIT B

13 TX DATA IN B

14 TX DA T A

15 STROBE B

16 GROUND B

17 RX DA TA

18 RX DA TA OUT A

19 TX / RX

A

20 TX / RX A

.310 MAX .030 ±.010 .040 or .300 MIN