ACT4469-D (10/08)

Standard Products
ACT4469D Dual Variable Amplitude Transceiver
for H009 Specification
www.aeroflex.com/Avionics
October 8, 2008
FEATURES
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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
Monolithic construction using linear ASICs
+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
Designed for commercial, industrial and aerospace applications
Aeroflex is a Class H & K MIL-PRF-38534 Manufacturer
DESCRIPTION
The Aeroflex Plainview transceiver model ACT4469D is a new 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 ACT4469D performs the front-end analog function of inputting and
outputting data through a transformer to a H009 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. The 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 2mA
maximum input current at 10Volts.
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 bus terminating resistors, with the bus terminated by a 175 Ohm
resistor, the data bus signal produced is 20VP-P nominal at A-A' (See Figure 5). When both DATA and DATA inputs are held
low or high, the transmitter output becomes a low impedance and signal is “removed” from the line. In addition, an overriding
“INHIBIT" input returns the output to a high impedance 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 1 MHz to meet H009 specifications. 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 1.0VP-P and reject signals less than 0.6VP-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. If unused, a 2K Ohm pull-up to +5VDC is recommended.
SCD4469D Rev D
VCONT
TX DATA IN
TX DATA IN
TX INHIBIT
VL
+VCC
-VEE
GROUND
10
Channel B
24 (18)
23 (17)
DRIVER
TRANSMIT
ACTIVE
FILTER
VARIABLE
AMPLITUDE
OUTPUT
STAGE
1 (8)
REFERENCE
COMP.
5 (11)
RECEIVE
ACTIVE
FILTER
COMP.
6 (12)
2 (9)
TX/RX
TX/RX
22 (16)
19 (13)
21 (15)
Channel A (B)
20 (14)
3
RX DATA OUT
Channel A
Channel B
INPUT
AMP
STROBE
RX DATA OUT
4 (10)
BLOCK DIAGRAM
(WITHOUT TRANSFORMER, CHANNEL A SHOWN)
CHANNEL A (CHANNEL B)
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 1A – TX OUTPUT TRUTH TABLE
SCD4469D Rev D 10/8/08
Aeroflex Plainview
2
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 1A – TRANSMITTER LOGIC WAVEFORMS
LINE TO LINE
INPUT
Rx DATA OUT
Note overlap
Rx DATA OUT
FIGURE 2 – RECEIVER LOGIC WAVEFORMS
SCD4469D Rev D 10/8/08
Aeroflex Plainview
3
ABSOLUTE MAXIMUM RATINGS
Operating Case Temperature
-55°C to +125°C
Storage Case Temperature
-65°C to +150°C
±18 V
Power Supply Voltages
+7 V
-0.3 V to +5.5 V
Logic Input Voltage
Receiver Differential Input
±40 V
Receiver Input Voltage (Common Mode)
±10V
150 mA
Driver Peak Output Current
Total Package Power Dissipation over the Full Operating
Case Temperature Range
3.6 Watts
18°C
Maximum Junction to Case Temperature (100% duty cycle)
5°C/W
Junction-Case, Thermal Resistance
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 = 0.4V
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
-
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
Differential Output Impedance (inhibited)
4/
ZOI
10K
-
-
Ω
Point A - A'
VO
16
20
24
V p-p
Rise and Fall Times
(10% to 90% of p-p output)
-
tR & tF
200
260
300
nS
Output Offset, Figure4 5/
Point A - A'
VOS
-
-
±260
mV peak
Delay from 50% point of TX DATA or TX DATA
input to zero crossing of differential signal (Note 1)
-
tDTX
-
280
400
nS
Control Line Input Resistance 3/
-
RCONT
5
-
-
ΚΩ
INHIBIT CHARACTERISTICS
OUTPUT CHARACTERISTICS
Differential output level (175Ω)
SCD4469D Rev D 10/8/08
Aeroflex Plainview
4
ELECTRICAL CHARACTERISTICS – RECEIVER SECTION 1/ 2/
Parameter
Differential Voltage Range 3/
Common Mode Rejection Ratio 3/
Condition
Symbol
Min
Typ
Max
Unit
Point A-A'
VIDR
-
-
20
VPEAK
-
CMRR
45
-
-
dB
STROBE CHARACTERISTICS (Logic '0' Inhibits Output)
(NOTE: If not used, a 1K pullup to 5V is recommended)
"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
Strobe Delay (turn-on or turn-off)
-
tSD(ON/OFF)
-
90
150
nS
VTH
1.5
2.0
3.0
VP-P
THRESHOLD CHARACTERISTICS (Sinewave Input )
Internal Threshold Voltage, Point A-A' Figure 5
1MHz
OUTPUT CHARACTERISTICS, RX DATA AND RX DATA
"1" State
IOH = -0.4mA
VOH
2.5
3.6
-
V
"0" State
IOL = 4mA
VOL
-
0.35
0.5
V
Delay, (average) from differential input zero
crossings to RX DATA and RX DATA output
6/
50% points
tDRX
-
300
450
nS
POWER SUPPLY CURRENT PER CHANNEL 1/ 2/
VCC = +12V to +15V, VEE = -12V to -15V, VL = +5V
Duty Cycle
Condition
Symbol
Typ
Max
Unit
Point A - A'
ZO = 175Ω,
VO = 21VP-P
Figure 5
ICC
IEE
IL
6
15
22
10
25
30
mA
25%
ICC
IEE
IL
25
36
22
35
45
30
50%
ICC
IEE
IL
34
45
22
45
55
30
100%
ICC
IEE
IL
49
60
22
60
70
30
Transmitter Standby
Notes:
1. VCC = +15Volts ±0.75V, VEE = -15Volts ±0.75V, VIL = +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.
SCD4469D Rev D 10/8/08
Aeroflex Plainview
5
VO P-P @ A– A'
21
FS
Last Bit
OUTPUT AMPLITUDE
16.8
0.8FS
Slope = ΔVO ÷ ΔVCONT
@175Ω
Magnified View
12.6
Output Offset*
0.6FS
0 Volts
8.4
0.4FS
4.2
0.2FS
0
0
Output Offset*
2.5 µsec
*Offset measured at point A-A’ in Figure 5
VCONT DC
2
4
6
8
10
FIGURE 4 – TRANSMITTER (TX) OUTPUT
OFFSET
FIGURE 3 – TYPICAL TRANSMITTER OUTPUT
AMPLITUDE (Vo) vs VCONT VOLTAGE
3.6
C B
3.2
A
POWER DISSIPATION
MILLIWATTS
TX/RX DATA OUT
34Ω N1:N2
+*
175Ω
TX/RX DATA OUT
+*
C
ACT4469D, CH A
B'
A'
34Ω
Transformer:
Turns ratio: N1:N2 = 1:1
Use MIL-PRF-21038/27-1
or Technitrol 1553-1
2.8
2.4
Maximum
2.0
1.6
1.2
Typical
.8
.4
0
0
10
20
30
40
50
60
70
80
90 100
DUTY CYCLE – PERCENT
* External Coupling Capacitors are required for each output.
Recommened 1µF ceramic 25V/50V or can use Tantalum.
Note: Vcc = +15VDC, VEE = -15VDC, VBUS (Point A-A') at 21VP-P
FIGURE 6 – PACKAGE (PWRIN - PWRLOAD)
POWER DISSIPATION vs DUTY CYCLE
(Total Hybrid with one channel
transmitting and the other in standby)
FIGURE 5 – TYPICAL TRANSFORMER
CONNECTION
SCD4469D Rev D 10/8/08
Aeroflex Plainview
6
PACKAGE DIMENSIONS
24
13
All dimensions in inches
Pin# 1 & ESD
Designator
12
1.270
MAX
.200
MAX
.620
MAX
.150
MIN
.030
.010
.019
.015
.050
TYP
.610
.590
.012
.008
PIN vs FUNCTION TABLE
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
SCD4469D Rev D 10/8/08
Aeroflex Plainview
7
CONFIGURATIONS AND ORDERING INFORMATION
Model No.
ACT4469-D
ACT4469-DI
ACT 4469-D-7
Screening
DSCC SMD
Receiver Data level
Military Temperature, -55°C to +125°C
Screened in accordance with MIL-PRF-38534,
Class H
Pending
Normally Low
DIP
Normally High
NA
Commercial flow, +25°C testing only
Case
Normally Low
ACT 4469-DI-7
Normally High
PLAINVIEW, NEW YORK
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Tel: 719-594-8017
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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
SCD4469D Rev D 10/8/08
8
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