ACT4462-D - Aeroflex Microelectronic Solutions

Standard Products
ACT4462D Dual Transceiver Variable Amplitude Universal
for H009 Specification or MacAir/1553/1760 Bus Operation
October 9, 2007
www.aeroflex.com/Avionics
FEATURES
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ACT4462D Dual Transceiver meets H009 and MacAir / 1553 / 1760 specifications
Variable output amplitude adjustment
H009 or MacAir / MIL-STD-1553 / MIL-STD-1760 – Pin selectable
H009 transmitter can be used to drive clock signal line
Bipolar ±15V to ±12V & Logic +5V Supplies
Voltage source output
Receiver thresholds adjustable – Using threshold adjustment pins
1.25"L x 0.61"W, 24 lead, ceramic, hermetic package
Monolithic construction using linear ASICs
Processed and screened to MIL-STD-883 specs
Designed for commercial, industrial and aerospace applications
Aeroflex is a Class H & K MIL-PRF-38534 manufacturer
DESCRIPTION
Aeroflex Plainview transceiver model ACT4462D is the first
transceiver to combine H009 Bus and MacAir / 1553 / 1760 Bus
operation in a Variable Amplitude Dual Channel, pin selectable,
hybrid. In addition to pin selectable bus operation the transceiver
allows the user to externally set the receiver threshold, for either
channel, to optimize system performance. Two pins, per channel,
are brought out for external threshold adjustment, and, with the
addition of a resistor from each pin to ground the threshold can be
tailored for each channel separately. This Dual Channel, Variable
Amplitude, Pin Selectable H009 or MacAir/1553/1760
Transceiver allows the user to stock one component when the
system has both a H009 Bus as well as a MacAir/1553/1760 Bus.
It should also appeal to H009/MacAir/1553/1760 test equipment
manufacturers.
TRANSMITTER
H009 OPERATION
When the 1553/H009 select pin is tied to 5VDC, the transmitter
is in H009 operation and accepts bi-phase 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 170 Ohm resistor the data bus signal
produced is 21Vp-p typical at A-A' (See Figure 9). 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 “TX INHIBIT" input returns
the output to a high impedance state. A logic “1” applied to the
“TX 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.
MacAIR / 1553 / 1760 OPERATION
When the 1553/H009 select pin is left open circuit, the
transmitter is in the MacAir /1553 /1760 operation and 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 55
Ohm fault isolation resistors, and loaded by two 70 Ohm
terminations plus additional receivers, the data bus signal
produced is 7.0Vp-p minimum at A-A’ (See Figure 11 and 12).
SCD4462D Rev E
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 “TX INHIBIT" input
provides for the removal of the transmitter output from the line. A
logic “1” applied to the “TX INHIBIT” takes priority over the
condition of the data inputs and disables the transmitter (See
Transmitter Logic Waveforms - Figure 3).
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 transmitter output level is controlled by an external DC
Voltage of 0VDC to 10VDC for full output, regardless of the bus
type selected. External ceramic coupling capacitors, with 10KΩ
resistors connected in parallel to the capacitor (low ESR), are
needed to connect the transmitter outputs to the primary of the
coupling transformer.
The main difference between H009 transmitter operation and
MacAir/1553/1760 transmitter operation is the Inhibit function
(TX INHIBIT A / TX INHIBIT B). In H009 operation, when both
the DATA and DATA transmitter inputs are held low or high, the
transmitter output impedance is low, and there is no transmitter
output signal. This function is used to terminate the bus, for a
period of time, in a H009 system. When the TX INHIBIT is pulled
up to 5VDC or left open circuited, the transmitter output goes into
a high impedance state, effectively removing it from the 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 and 4). Since H009 and
MacAir/1553/1760 bus thresholds are usually different, the
receiver threshold levels for both channels can be set, for either
bus operation, with the Threshold adjust pins. Grounding the
DATA and DATA threshold adjust pins, for channel A or B, will
set normal 1553 threshold levels of about 0.9Vp-p at 1MHz. By
adding a resistor from each threshold pin to ground the receiver
threshold level can be increased from normal 1553 levels to
normal H009 levels of about 2Vp-p at 1Mhz, or set anywhere in
between.
CHAN B
AMP CONT
TX DATA OUT
TX DATA IN
DRIVER
SHAPING
TX DATA IN
OUTPUT
STAGE
TX DATA OUT
COMP.
RX DATA OUT
V+
TX INHIBIT
EXT. THRESHOLD
DATA
DATA
SET INTERNAL
THRESHOLD DATA
EXT. THRESHOLD
DATA
V-
+5V
-12V or -15V
RX DATA IN
INPUT
AMP
RX DATA IN
ACTIVE
FILTER
COMP.
RX DATA OUT
+15V or +12V
STROBE
BLOCK DIAGRAM (WITHOUT TRANSFORMER)
Region 1
2
3
DATA IN
DATA IN
INHIBIT
LINE TO LINE
OUTPUT
Notes: 1. Data and DATA inputs must be complementry 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, (Terminate Mode), Region 3; Transmitter signal
on, low Z.
FIGURE 1 – H009 TRANSMITTER LOGIC WAVEFORMS
LINE TO LINE
INPUT
Rx DATA OUT
Note overlap
Rx DATA OUT
FIGURE 2 – H009 RECEIVER LOGIC WAVEFORMS – ACT4462DI
SCD4462D Rev E 10/9/07
Aeroflex Plainview
2
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 3 – MACAIR / 1553 TRANSMITTER LOGIC WAVEFORMS
LINE TO LINE
INPUT
DATA OUT
DATA OUT
Note overlap
FIGURE 4 – MACAIR / 1553 RECEIVER LOGIC WAVEFORMS – ACT4462DI
SCD4462D Rev E 10/9/07
Aeroflex Plainview
3
ABSOLUTE MAXIMUM RATINGS
Operating Case Temperature
-55°C to +125°C
Storage Case Temperature
-65°C to +150°C
±15 VDC P.S. to ±18 VDC MAX
Power Supply Voltages
Logic Input Voltage
+5 VDC P.S. to +7 VDC
-0.3 V to +5.5 V
Receiver Differential Input
±40 V
Receiver Input Voltage (Common Mode)
±10 V
Driver Peak Output Current
150 mA
Amplitude Control Voltage
-0.5 VDC to +0.5 VDC
1553-3.25 Watt / H009 - 1.72 Watt
Total Package Power Dissipation over the Full Operating
Case Temperature Range *
(Note: Normal operation conditions require one transmitter on
and the other off at any given time)
Maximum Junction to Case Temperature (100% duty cycle) *
1553-16.25°C / H009- 8.6°C
Junction-Case, Thermal Resistance
5°C/W
* Macair-1553/H009
ELECTRICAL CHARACTERISTICS – DRIVER SECTION
INPUT CHARACTERISTICS, TX DATA IN OR TX DATA IN (H009, MACAIR & MIL-STD-1553)
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
INHIBIT CHARACTERISTICS (H009, MACAIR & MIL-STD-1553)
"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
-
200
500
nS
Delay from TX inhibit, (1➝0) to active output
Note 1
tDXON
-
250
700
nS
VNOI
-
0.8
10
mVp-p
Note 2
ZOI
10K
-
-
Ω
VCTL = 10V
-
VICTL
ZO
10K
1.0
-
-
mA
Differential Output Noise, inhibit mode
Differential Output Impedance (inhibited)
Amplitude Control Voltage
Input Current
Input Resistance
SCD4462D Rev E 10/9/07
Ω
Aeroflex Plainview
4
ELECTRICAL CHARACTERISTICS – DRIVER SECTION con’t
OUTPUT CHARACTERISTICS (H009)
PARAMETER
CONDITION
SYMBOL
MIN
TYP
MAX
UNIT
RL=170 Ω
(Pin 21 set at
+10VDC)
VO
16
21
24
Vp-p
tr
200
-
300
nS
VOS
-
-
±265
mVpeak
tDTX
-
270
400
nS
VO
20
21
24
Vp-p
VOS
-
-
±90
mVpeak
Output rise / fall times (10% to 90% of p-p output)
tR & tF
200
250
300
nS
Delay from 50% point of TX DATA or TX DATA
input to zero crossing of differential output (Note 1)
tDTX
-
270
400
nS
Differential output level at point A-A’ on
Figure 9
Rise and fall times
(10% to 90% of p-p output)
Output offset at point A-A’ on Figure 9, 2.5 µS
after midpoint crossing of the last bit
RL=170 Ω
Delay from 50% point of TX DATA or
TX DATA input to zero crossing of
differential signal (Note 1)
OUTPUT CHARACTERISTICS (Macair & MIL-STD-1553/1760)
ZO = 70Ω
(Pin 21 set at
+10VDC)
Differential output Level, Figure 11 Point B-B'
Output offset at point A-A on Figures 11 or 12,
2.5µS after midpoint crossing of the last bit
ELECTRICAL CHARACTERISTICS – RECEIVER SECTION (H009, MACAIR & MIL-STD-1553)
PARAMETER
Differential Input Impedance (Note 1)
CONDITION
SYMBOL
MIN
TYP
MAX
UNIT
f = 1MHz
ZIN
20K
-
-
Ω
VIDR
-
-
40
Vp-p
Note 1
VICR
10
-
-
Vp-p
Point A-A on
Figure 12
CMRR
40
-
-
dB
Differential Input Voltage Range
Input Common Mode Voltage Range
Common Mode Rejection Ratio
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
tSD(ON)
-
-
150
nS
1.2
1.8
2.3
Vp-p
0.70
0.90
1.10
Vp-p
Strobe Delay (turn-on or turn-off)
THRESHOLD CHARACTERISTICS (SINEWAVE INPUT )
Internal Threshold Voltage
H009 – Figure 9
R ~ 3.4KΩ
MacAir/1553 – Figure 11 or 12, Point A - A'
100K - 1MHz
VTH
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
50% points
tDRX
-
275
450
nS
SCD4462D Rev E 10/9/07
Aeroflex Plainview
5
POWER SUPPLY CURRENT (Macair & MIL-STD-1553/1760) 1/ 2/
DUTY CYCLE
CONDITION
SYMBOL
TYP
MAX
ICC
IEE
IL
5
25
18
10
35
30
Point B-B', ZO = 70 Ω, VO = 29 VP-P
Bit Pattern = FFFFHEX
Figure 12
ICC
IEE
IL
20
40
18
30
60
30
(Pin 21 set at +10VDC)
50%
ICC
IEE
IL
40
60
18
60
80
30
100%
ICC
IEE
IL
85
105
18
120
140
30
SYMBOL
TYP
MAX
ICC
IEE
IL
5
15
18
10
35
30
ICC
IEE
IL
17
27
18
23
33
30
ICC
IEE
IL
27
37
18
35
45
30
ICC
IEE
IL
42
56
18
60
70
30
Transmitter Standby
25%
UNIT
mA
POWER SUPPLY CURRENT (H009)
DUTY CYCLE
CONDITION
Transmitter Standby
25%
50%
Point A-A', ZO = 170Ω, VO = 21 VP-P
Bit Pattern = FFFFHEX
Figure 9
(Pin 21 set at +10VDC)
100%
UNIT
mA
Notes:
1. Characteristics guaranteed by design, not production tested.
2. Measured at 1mHz at point A-A', power on or off.
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.
5. Amplitude control set at +10V for electrical characteristics tables.
6. Normal operating supplies: ±15VDC to ±12VDC and +5VDC.
SCD4462D Rev E 10/9/07
Aeroflex Plainview
6
LAST BIT
tf*
90%
Magnified View
OUTPUT OFFSET*
16V P-P MIN
24V P-P MAX
0 Volts
0 Volts
OUTPUT OFFSET*
10%
2.5 µsec
tr*
*Offset measured at point A-A' in Fig 9 & 12
* Rise and fall times measured at point A-A' in Fig 9 & 12
FIGURE 5 – TRANSMITTER (TX)
OUTPUT WAVEFORM
FIGURE 6 – TRANSMITTER (TX)
OUTPUT OFFSET
5.0
2.25
4.5
2.00
4.0
POWER DISSIPATION
WATTS
POWER DISSIPATION
WATTS
2.50
1.75
MAXIMUM
1.50
1.25
1.00
0.75
TYPICAL
0.50
0.25
3.5
3.0
MAXIMUM
2.5
2.0
1.5
TYPICAL
1.0
0.5
0
0
10
20
30 40 50 60 70 80
DUTY CYCLE, PERCENT
0
0
90 100
FIGURE 7 – H009 POWER
DISSIPATION vs DUTY CYCLE
(Total hybrid with one channel
transmitting and the other in standby)
10
20
30 40 50 60 70 80
DUTY CYCLE, PERCENT
90 100
FIGURE 8 – MACAIR/1553 POWER
DISSIPATION vs DUTY CYCLE
(Total hybrid with one channel
transmitting and the other in standby)
Terminal
TRANSCEIVER
UNDER TEST
C*
27
34Ω N1:N2
RX DATA IN
A
RX DATA OUT
10KΩ
RX DATA OUT
C*
TX DATA OUT
RX DATA IN
R
170Ω
A'
34Ω
10KΩ
OUTPUT AMPLITUDE
AMP CTL
TX DATA OUT
VP-P @ B - B'
30
24
21
15
12
9
THRESHOLD A / B
6
THRESHOLD A / B
3
R
0
0
* Cap is 0.5 - 1µF ceramic BX/X7R
R is determined at system level
Transformer turns ratio:
N1:N2 = 1:1
Recommend Technitrol 1553-1
Typical
18
Slope = 3VP-P/Vdc
1
2
3
4
5
6
7
8
9
10
Vdc
CONTROL VOLTAGE
FIGURE 10 – TRANSMITTER (TX) OUTPUT
AMPLITUDE vs CONTROL VOLTAGE
(See Figure 12 herein)
FIGURE 9 – H009 TYPICAL TRANSFORMER
CONNECTION
SCD4462D Rev E 10/9/07
Aeroflex Plainview
7
Terminal
TRANSCEIVER
UNDER TEST
AMP CTL
TX DATA OUT
Zo
C*
RX DATA IN
Isolation
Transformer
Coupling
Transformer
1:N
1 : 1.414
R
B
RX DATA OUT
RX DATA OUT
A
Data
Bus
Wire
Pair
Isolation
Resistors
R = 0.75 ZO
10KΩ
C*
R
B'
A'
TX DATA OUT
RX DATA IN
10KΩ
THRESHOLD A / B
Zo
THRESHOLD A / B
Terminal Input Impedance B – B'
MIL-STD-1553B para 4.5.2.1.2.3
1KΩ minimum. 75KHz – 1MHz.
* Cap is 0.5 - 1µF ceramic BX/X7R
Transformer turns ratio:
N = 0.707
Recommend Technitrol 1553-1
FIGURE 11 – MACAIR/1553 DATABUS INTERFACE USING TRANSFORMER COUPLING
(FIGURE 9 OF MIL-STD-1553B)
Terminal
TRANSCEIVER
UNDER TEST
AMP CTL
TX DATA OUT
Zo
C*
RX DATA IN
Isolation
Transformer
55Ω
1:N
B
RX DATA OUT
RX DATA OUT
A
Data
Bus
Wire
Pair
10KΩ
C*
55Ω
B'
A'
TX DATA OUT
RX DATA IN
10KΩ
Zo
THRESHOLD A / B
THRESHOLD A / B
* Cap is 0.5 - 1µF ceramic BX/X7R
Transformer turns ratio:
N=1
Recommend Technitrol 1553-1
Terminal Input Impedance B – B'
MIL-STD-1553B para 4.5.2.2.2.3
2KΩ minimum. 75KHz – 1MHz.
FIGURE 12 – MACAIR/1553 DATABUS INTERFACE USING DIRECT COUPLING
(FIGURE 10 OF MIL-STD-1553B)
SCD4462D Rev E 10/9/07
Aeroflex Plainview
8
PACKAGE CONFIGURATION OUTLINE
24
13
12
Pin# 1 & ESD
Designator
1.270
MAX
.200
MAX
.620
MAX
.150
MIN
.030
.010
.050
TYP
.019
.015
All dimensions in inches
.610
.590
.012
.008
PIN # vs FUNCTION TABLE
PIN #
FUNCTION
PIN #
FUNCTION
1
TX DATA IN A
13
THRESHOLD B
2
TX DATA IN A
14
THRESHOLD B
3
TX DATA OUT A / RX DATA IN A
15
TX INHIBIT B
4
TX DATA OUT A / RX DATA IN A
16
1553 / H009 SELECT
5
RX DATA OUT A
17
6
RX DATA OUT A
18
GROUND
7
TX DATA IN B
19
VEE (-15V)
8
TX DATA IN B
20
VCC (+15V)
9
TX DATA OUT B / RX DATA IN B
21
AMPL CONTROL
10
TX DATA OUT B / RX DATA IN B
22
THRESHOLD A
11
RX DATA OUT B
23
THRESHOLD A
12
RX DATA OUT B
24
TX INHIBIT A
SCD4462D Rev E 10/9/07
+VL (+5V)
Aeroflex Plainview
9
CONFIGURATIONS AND ORDERING INFORMATION
MODEL NO.
RECEIVER DATA LEVEL
CASE
SPECS.
ACT 4462D
Normally Low
Plug In
ACT 4462DI
Normally High
MIL-PRF-38534 Class H Processing
ACT 4462D-7
Normally Low
H009 & MacAir/1553/1760
ACT 4462DI-7
Normally High
H009 (-55°C to +125°C)
MacAir/1553/1760 (-55°C to +125°C)
Commercial flow, +25°C testing only
Note:
1. Reference Aeroflex ACT4444 for new 1553/McAir designs requiring a minature chip scale surface mount component
implementation.
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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.
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SCD4462D Rev E 10/9/07
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