ACT4469D Dual Variable Amplitude Transceivers for H009 Features CIRCUIT TECHNOLOGY • World’s smallest and lowest standby power dual variable amplitude H009 transceiver 1.25" x 0.61" maximum ceramic package • Dual transceiver with variable output amplitude control meets McDonnell Douglas H009 data bus specifications • Lowest standby power • Low power dissipation at full output power • Operates with ±12V to ±15 and +5V power supplies • Voltage source output for transmitter • Monolithic construction • Processed to commercial or screened to MIL-STD-883 specs • +10V Control line for transmitter amplitude adjustment (See Figure 3) • Packaging – Hermetic Ceramic Non-conductive mounting surface No package glass beads ■ Small size & light weight ■ ■ CHANNEL B TX DATA IN DRIVER TX DATA IN V CONT TRANSMIT ACTIVE FILTER VARIABLE AMPLITUDE OUTPUT STAGE REFERENCE COMP. TX/RX TX/RX TX INHIBIT +5 V +V CC Channel A RX DATA OUT -VEE Channel A GROUND Channel B INPUT AMP RECEIVE ACTIVE FILTER COMP. RX DATA OUT STROBE Block Diagram (without Transformer, Channel A shown) www.aeroflex.com General Description The Aeroflex Circuit Technology model ACT4469D is a next generation monolithic transceiver which provides variable amplitude in compliance with H009 data bus requirements with the lowest standby power consumption available using three DC power supplies operation. The dual channel model ACT4469D performs the front-end analog function of inputting and outputting data through a transformer to a H009 data bus. 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 ACT4469D series active filter design provides the required H009 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. Variable amplitude is adjusted with factory preset 0–10Vdc control line at 2 mA maximum input current at 10 Volts. Transmitter The Transmitter section accepts complementary TTL data at the input, and when coupled to the data bus with a 1:1 transformer, isolated on the transceiver side with two 34 ohm fault isolation resistors, and loaded by a 175 ohm termination, the data bus signal produced is 20 Volts nominal P-P at eroflex Circuit Technology – Data Bus Modules For The Future © SCD4469D REV A 5/21/01 A-A’ (See Figure 5). When both DATA and DATA inputs are held low or high, the transmitter output impedance is low, and signal is “removed” from the line. In addition, an overriding “INHIBIT” input returns the output impedance to a high state. 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 H009 specification. The transmitter may be safely operated for an indefinite period with the output short circuited at 100% duty cycle. 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 1.0 Volts P-P when used with a 1:1 turns ratio transformer (See Figure 5 for transformer data and typical connection). A low level at the Strobe input inhibits the DATA and DATA outputs. The strobe is internally pulled up, therefore a pull resistor is not needed. Figure 1A – Tx Output Truth Table DATA DATA INHIBIT OUTPUT X X H High Z H H L L L L H L L L H L Low Z (No signal) Low Z (Signal) Figure 1B - Transmitter Logic Waveforms Region 1 2 3 4 1 DATA IN DATA IN INHIBIT LINE TO LINE OUTPUT Notes: 1. Data and DATA inputs must be complementary waveforms or 50% duty cycle average, with no delays between them, and in the same state during the off time (both high and low). 2. Region 1; no output signal, High Z state, (Receive Mode), Region 2; No Output signal, Low Z state, Region 3; Transmitter signal on, low Z (Transmitter mode), Region 4; No Output signal, Low Z state, (Terminate Mode). Figure 2 - Receiver Logic Waveforms LINE TO LINE INPUT Rx DATA OUT Note overlap Rx DATA OUT Aeroflex Circuit Technology 2 SCD4469D REV A 5/21/01 Plainview NY (516) 694-6700 Absolute Maximum Ratings, Per Channel Operating Case Temperature -55°C to +125°C Storage Case Temperature -65°C to +150°C Power Supply Voltages ±16 V Logic Input Voltage +7 V -0.3 V to +5.5 V Receiver Differential Input ±40 V Receiver Input Voltage (Common Mode) ±10V Driver Peak Output Current 150 mA Total Package Power Dissipation over the Full Operating Case Temperature Range 3.6 Watts 18°C Maximum Junction to Case Temperature Junction-Case, Thermal Resistance 5°C/W Electrical Characteristics – Driver Section 1/ 2/ 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 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 - tDXOFF - 300 500 nS Delay from TX inhibit, (1→0) to active output - tDXON - 200 400 nS Differential Output Noise, inhibit mode - VNOI - 2 10 mVp-p Pt. A - A’ VO 16 20 24 V p-p - tR & tF 200 260 300 nS Pt. A - A’ VOS - - ±260 mV peak Delay from 50% point of TX DATA or TX DATA input to zero crossing of differential signal - tDTX - 280 400 nS Control Line Input Resistance 3/ - RCONT 5 - - KΩ Inhibit Characteristics Output Characteristics Differential output level (175Ω) Rise and Fall times Output Offset Aeroflex Circuit Technology 3 SCD4469D REV A 5/21/01 Plainview NY (516) 694-6700 Electrical Characteristics – Receiver Section Parameter Differential Voltage Range 3/ Condition Symbol Min Pt. A - A’ VIDR - - CMRR 45 Common Mode Rejection Ratio 3/ 1/ 2/ Typ - Max Unit 20 V peak - dB Strobe Characteristics (Logic "0" inhibits output) (NOTE: If not used, a 1K pullup to 5V is recommended) "0" Input Current VS = 0.4 V 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 Strobe Delay (turn-on) - tSD(ON) - 90 150 nS Strobe Delay (turn-off) - tSD(OFF) - 90 150 nS 1MHz VTH 1.5 2.0 3.0 Vp-p Threshold Characteristics (Sinewave input ) Input Threshold Voltage, Pt. A - A’ Figure 5 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 6/ tDRX - 300 450 nS Delay (average), from differential input zero crossings to RX DATA and RX DATA output 50% points Power Supply Currents Per Channel 1/ 2/ VCC = +12V to +15V, VEE = -12V to -15V, VL = +5V Duty Cycle Condition Symbol Typ Max Pt. A - A’ ZO = 175 Ω, VO = 21 VPK-PK Figure 5 ICC IEE IL 6 16 19 10 25 25 25% 3/ ICC IEE IL 26 35 19 35 45 25 50% ICC IEE IL 45 54 19 55 65 25 100% ICC IEE IL 84 92 20 120 130 25 Transmitter Standby Unit mA Notes: 1. VCC = +15Volts ±0.75V, VEE = -15Volts ±0.75V, V IL = +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 1MHz at Point A-A’ Figure 4. 5. At point A-A’ on Figure 4 or 5, 2.5 µS after midpoint crossing of the parity bit of the last word. 6. 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 4 SCD4469D REV A 5/21/01 Plainview NY (516) 694-6700 Figure 4 – Transmitter (TX) Output Offset Figure 3 – Typical Transmitter Output Amplitude (Vo) vs Vcont Voltage VO PK-PK @ A– A' 21 OUTPUT AMPLITUDE 16.8 FS LAST BIT 0.8FS Slope = ∆VO ÷ ∆VCONT @175Ω Magnified View OUTPUT OFFSET* 12.6 0.6FS 8.4 0.4FS 4.2 0.2FS OUTPUT OFFSET* 2.5 µsec *Offset measured at point A-A’ in Figure 5 0 0 VCONT dc 2 4 6 8 10 CONTROL VOLTAGE Figure 5 – Typical Transformer connection + 34Ω N1:N2 * C B 3.6 3.2 A 175Ω TX/RX DATA OUT + * B' C ACT4469D, CH A A' 34Ω Use Aeroflex 25T1553-1 Transformer turns ratio: N1:N2 = 1:1 POWER DISSIPATION MILLIWATTS TX/RX DATA OUT Figure 6 – Power Dissipation vs. Duty Cycle (Total hybrid with one channel transmitting and the other in standby) 2.8 2.4 Maximum 2.0 1.6 Typical 1.2 .8 .4 * External Coupling Capacitors are required for each output. Recommened 1µF ceramic 25V/50V or can use Tantalum (15WVDC min) with 0.1µF ceramic in parallel for each output. 0 0 10 20 30 40 50 60 70 80 90 100 DUTY CYCLE – PERCENT Note: Vcc = ±15V Volts, V bus (Pt. A-A') at 21 Volts P-P Configurations and Ordering Information Model No. Receiver Data level Case Specs. Configuration ACT4469D Normally Low DIP H009 Dual ACT4469DI Normally High Aeroflex Circuit Technology 5 SCD4469D REV A 5/21/01 Plainview NY (516) 694-6700 CIRCUIT TECHNOLOGY Package Dimensions 24 13 12 Pin# 1 & ESD Designator 1.270 MAX .200 MAX .620 MAX .150 MIN .030 .010 Pin Outs .050 TYP .019 .015 .610 .590 All dimensions in inches .012 .008 ACT4469D Pin # Function Pin # Function 1 TX DATA OUT A / RX DATA IN A 13 +5V B 2 TX DATA OUT A / RX DATA IN A 14 -15V B 3 GROUND 15 +15V B 4 STROBE A 16 INHIBIT B 5 RX DATA OUT A 17 TX DATA IN B 6 RX DATA OUT A 18 TX DATA IN B 7 10V CONTROL IN 19 +5V A 8 TX DATA OUT B / RX DATA IN B 20 -15V A 9 TX DATA OUT B / RX DATA IN B 21 +15V A 10 STROBE B 22 INHIBIT A 11 RX DATA OUT B 23 TX DATA IN A 12 RX DATA OUT B 24 TX DATA IN A 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 SCD4469D REV A 5/21/01 Plainview NY (516) 694-6700