Aeroflex ACT4438 Act4438-1 transceiver for mil-std-1553 / 1760 in a chipscale package Datasheet

ACT4438–1
Transceiver for MIL-STD-1553 / 1760
in a Chipscale Package
Preliminary
Features
CIRCUIT TECHNOLOGY
www.aeroflex.com
• Transceiver meets military data bus requirements,
MIL-STD-1553 and MIL-STD-1760
• Low power dissipation at full output power
• Single +5V power supply
• Current Source Transmitter Output
• Bipolar Monolithic Construction
• Miniature Chipscale Package Bumped Chip Carrier™
(BCC++)
Shown 2X
NOTE: BCC++ and Bumped Chip Carrier are Trademarks of Fujitsu Ltd.
TX DATA OUT
DRIVER
SHAPING
OUTPUT
STAGE
REFERENCE
COMP.
ACTIVE
FILTER
COMP.
TX DATA IN
TX DATA OUT
TX INHIBIT
RISET
+5 V
RX DATA OUT
GROUND
RX DATA IN
RX DATA IN
STROBE
INPUT
AMP
The Aeroflex Circuit Technology
Model ACT4438-1 is a next
generation
monolithic transceiver
which provide full compliance with
MIL-STD-1553/1760 and data bus
requirements in a Bumped Chip
Carrier™ (BCC++) with the lowest
standby power consumption and
single power supply operation.
The Model ACT4438-1 performs the
front-end analog function of inputting
and outputting data through a
transformer to a MIL-STD-1553/1760
data bus with a few external
components.
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.
Transmitter
Block Diagram (without Transformer)
TX DATA IN
General Description
RX DATA OUT
The Transmitter section accepts
bi-phase TTL data at the input and
when coupled to the data bus with a
1:2.5 transformer, isolated on the
data bus side with two 55 Ohm fault
isolation resistors for direct stub
coupling. The data bus signal
produced for RISET = 2.7K Ohm is
typically 7.5 Volts nominal P-P at
A-A’, See Figure 5. When both DATA
and DATA inputs are held low, 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
eroflex Circuit Technology – Data Bus Modules For The Future © SCD4438-1 REV A 11/19/01
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
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 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 1:2.5 turns ratio transformer.
(See Figure 5 for transformer data
and typical connection.)
Figure 1. Transmitter Logic Waveforms
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.
2. DATA and DATA must be in the same state during off time (both high or low).
Figure 2. Receiver Logic Waveforms
LINE TO LINE
INPUT
DATA OUT
DATA OUT
Note overlap
NOTE: Waveforms shown are for normally low devices.
Aeroflex Circuit Technology
2
SCD4438-1 REV A 11/19/01 Plainview NY (516) 694-6700
Absolute Maximum Ratings
Operating Case Temperature
-55°C to +90°C
Storage Case Temperature
-65°C to +150°C
Positive Power Supply Voltage
-0.3 V to +7.0 V
Receiver Differential Input
±10 V
Receiver Input Voltage (Common Mode)
±5 V
Driver Peak Output Current
650 mA
Total Package Power Dissipation over the full operating case
temperature rise at 100% duty cycle
2.2 Watt
Maximum Junction to Case temperature rise
44°C
Thermal Resistance, Junction to bottom of case
20°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
VIN = 0.4 V
IILD
-
-0.2
-0.4
mA
"1" Input Current
VIN = 2.7 V
IIHD
-
1
40
µA
"0" Input Voltage
VIHD
-
-
0.7
V
"1" Input Voltage
VIHD
2.0
-
-
V
Inhibit Characteristics
"0" Input Current
VIN = 0.4 V
IILI
-
-0.2
-0.4
mA
"1" Input Current
VIN = 2.7 V
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
-
150
300
nS
Delay from TX inhibit, (1➝0) to active output
tDXON
-
150
300
nS
Differential Output Noise, inhibit mode
VNOI
-
2
10
mV p-p
Note 1
ZOI
2K
-
-
Ω
RL = 35 Ω
VO
6.5
7.5
8.0
V p-p
tr
100
200
300
nS
VOS
-
-
tDTX
-
150
Differential Output Impedance (inhibited)
Output Characteristics
Differential output level
Rise and Fall Times
(10% to 90% of p-p output)
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 660 µS message
RL = 35 Ω
Delay from 50% point of TX DATA or TX DATA
input to zero crossing of differential signal
±90
300
mV peak
nS
Note 1. Power ON/OFF, measured from 75KHz to 1MHz at Point A-A. See Figure 5
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SCD4438-1 REV A 11/19/01 Plainview NY (516) 694-6700
Electrical Characteristics – Receiver Section
Parameter
Condition
Differential Voltage Range
Common Mode Rejection Ratio
Symbol
Min
Typ
Max
Unit
VIDR
-
-
20
V peak
CMRR
45
-
-
dB
Strobe Characteristics (Logic "0" inhibits output) if not used, a 1K pullup to 5 V 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
200
nS
Strobe Delay (turn-off)
tSD(OFF)
-
90
200
nS
VTH
0.60
0.8
1.15
V p-p
Threshold Characteristics (Sinewave input )
100KHz1MHz
Input Threshold Voltage (Referred to the bus)
Output Characteristics, RX DATA and RX DATA
"1" State
IOH = -0.4 mA
VOH
2.5
3.7
-
V
"0" State
IOL = 4 mA
VOL
-
0.3
0.5
V
tDRX
-
330
450
nS
Delay, (average)from differential input zero
crossings to RX DATA and RX DATA output
50% points
Power Data
Maximum Currents, (+5V) For RISET =
Duty Cycle
2.2 KΩ
Typ
Max
20 mA
30 mA
25% duty cycle
155 mA
185 mA
50% duty cycle
264 mA
335 mA
100% duty cycle
600 mA
650 mA
Transmitter Standby
Power Supply Voltage
+V
4.75 to 5.5 Volts
Note 2. Vcc = 5 Volts ±0.1 V, for all measurements unless otherwise specified.
Note 3. Specifications apply over the case temperature range of -55°C to +90°C unless otherwise specfied.
Note 4. All typical values are measured at +25°C.
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SCD4438-1 REV A 11/19/01 Plainview NY (516) 694-6700
Figure 3 – Transmitter (TX) Output Waveform
Figure 4 – Transmitter (TX) Output Offset
LAST BIT
t f*
90%
Magnified View
OUTPUT OFFSET*
6V P-P MIN
7.7V P-P MAX
0 Volts
0 volts
OUTPUT OFFSET*
10%
2.5 µsec
tr*
*Offset measured at point A-A’ in Fig 5
* Rise and fall times measured at point A-A’ in Fig 5
Figure 5 – Typical Transformer Connection
Direct Stub
Figure 6 – Power Dissipation vs. Duty Cycle
2200
+5V
2000
0.1µF
ZO
ZO
TX DATA OUT
18-21
2
ACT4438-1
55Ω
1:2.5
1
A
4
5
6
TX DATA OUT
RX DATA IN
RX DATA IN
37
1600
ZO
10,11,33,34
RISET
1800
POWER DISSIPATION
MILLIWATTS
6.8µF
23-26
3
7
8
52
51
GND
A’
55Ω
Transformer Model:
Use Pulse/Technitrol
Part# 1553-45 or equivalent
1400
1200
800
Typical
600
400
200
0
9,35,39,50
2.7KΩ
Maximum
1000
10
20
30
40
50
60
70
80
90 100
DUTY CYCLE – PERCENT
Note: Vcc = 5 Volts, Vbus (pt A-A') at 7.5 Volts P-P
Configurations and Ordering Information
Model No.
ACT4438-1
Aeroflex Circuit Technology
Screening Level
Receiver and Transmitter
Data Levels (See Figure 1)
Case
Industrial Temperature
-55°C to +90°C
Normally Low
56 Bump Chip
Carrier
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SCD4438-1 REV A 11/19/01 Plainview NY (516) 694-6700
Package Pin Out Description - ACT4438-1
Pin #
Function
Pin #
Function
1
NC
29
NC
2
NC
30
NC
3
NC
31
NC
4
NC
32
NC
5
VCC
33
VCC *
6
TX DATA IN
34
VCC *
7
TX DATA IN
35
GND
8
TX INHIBIT IN
36
NC
9
GND
37
RISET
10
VCC *
38
NC
11
VCC *
39
GND
12
NC
40
RX DATA OUT
13
NC
41
RX STROBE
14
NC
42
RX DATA OUT
15
NC
43
NC
16
NC
44
NC
17
NC
45
NC
18
TX DATA OUT *
46
NC
19
TX DATA OUT *
47
NC
20
TX DATA OUT *
48
NC
21
TX DATA OUT *
49
VCC
22
NC
50
GND
23
TX DATA OUT *
51
RX DATA IN
24
TX DATA OUT *
52
RX DATA IN
25
TX DATA OUT *
53
NC
26
TX DATA OUT *
54
NC
27
NC
55
NC
28
NC
56
NC
* High current lines
Aeroflex Circuit Technology
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SCD4438-1 REV A 11/19/01 Plainview NY (516) 694-6700
CIRCUIT TECHNOLOGY
Package Description
PIN 1 IDENTIFER & ESD INDICATOR
TOP VIEW
Y
X
Z
0.80 MAX
8.00 ±0.10
0.67±0.025
0.075±0.025
0.20
8.00 ±0.10
4438-1
7.20 TYP
0.14 MIN
"A"
C 0.2
0.45 ±0.03
0.08 M Z X Y
0.45 ±0.03
0.08 M Z X Y
7.15 TYP
5.80
C.L.(Pkg)
C.L.(Pkg)
0.50 ±0.10
0.14 MIN
7.20 TYP
5.80
DETAIL "C"
C 0.2
"B"
0.30 ±0.03
0.08 M Z X Y
0.45 ±0.03
0.08 M Z X Y
7.15 TYP
"C"
0.40 ±0.03
0.08 M Z X Y
0.50 TYP
0.50±0.10
0.45 ±0.03
0.08 M Z X Y
0.50 TYP
0.05 Z
0.20 Z
BOTTOM VIEW
DETAIL "A"
DETAIL "B"
Notes
1. Dimensions in millimeters
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
7
SCD4438-1 REV A 11/19/01 Plainview NY (516) 694-6700
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