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PDF MA1916 Data sheet ( Hoja de datos )
| Número de pieza | MA1916 | |
| Descripción | Radiation Hard Reed-Solomon & Convolution Encoder | |
| Fabricantes | Dynex | |
| Logotipo |  |
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Replaces June 1999 version, DS3590-4.0
MAM1A9119166
Radiation Hard Reed-Solomon
& Convolution Encoder
DS3590-5.0 January 2000
The purpose of the MA1916 is to encode serial data to
allow error correction when the data is transmitted over a noisy
communication link. As the name suggests, the unit contains
two encoding elements. The Reed-Solomon encoder appends
a checksum to a block of data, guarding against burst errors in
a message. The convolution encoder continuously creates two
code bits for each data bit it receives, increasing the noise
immunity by doubling the band width of the message. The unit
also contains a test pattern generator which can be connected
to check the functionality of the RS encoder and to provide a
message timing signal (SMC_OUT).
Protection against a long error-burst can be increased by
interleaving a number of message packets passing through
the RS encoder. The MA1916 provides pin selectable
interleave depths of 1, 4 or 5. Interleave depths of greater than
5 do not significantly improve performance.
The MA1916 is designed to conform to the CCSDS
standard for telemetry 101.0.B.2. It is manufactured in a
radiation hard low power CMOS technology. This makes it
ideal for use in satellite communications systems. The encoder
reduces the risk of data corruption and allows the designer to
minimize the transmitter power needed to establish an
effective communications link.
FEATURES
s Radiation Hard CMOS-SOS Technology
s Low Power Consumption
s Latch-up Free
s High SEU Immunity
s CCSDS Standard RS (255, 223)
s Selectable Interleave Depths of 1, 4 or 5
s 5MBit/sec Input Data Rate
Figure 1: Block Diagram
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1 page  
MA1916
CE_CLK (Convolution Encoder Clock)
The CE_CLK input drives the timing of the convolution
encoder. Data is read in on CE_IN on the rising edge of
CE_CLK and output on CE_OUT on both the rising and falling
edge of CE_CLK.
Note: The output data rate is twice the input data rate.
A 50% duty cycle clock is required. If this is provided by the
CLKS output, data can be read directly from RSE_OUT to the
CE_IN input (see figure 3).
CE_OUT (Convolution Encoder Output)
This signal carries the output data from the convolution
encoder. The data rate on CE_OUT is twice that of CE_IN.
CLK_OUT (Clock Out)
CLK_OUT is a buffered output of the CLK input signal. If
CLKS is connected to CE_CLK to drive the convolution
encoder, CE_OUT can be captured on the falling edge of
CLK_OUT.
DC CHARACTERISTICS AND RATINGS
Parameter
Supply Voltage
Input Voltage
Current Through Any Pin
Operating Temperature
Storage Temperature
Min Max
-0.5 7
-0.3 VDD+0.3
-20 +20
-55 125
-65 150
Table 3: Absolute Maximum Ratings
Units
V
V
mA
°C
°C
Note: Stresses above those listed may cause permanent
damage to the device. This is a stress rating only and
functional operation of the device at these conditions, or at
any other condition above those indicated in the operations
section of this specification, is not implied. Exposure to
absolute maximum rating conditions for extended periods
may affect device reliability.
Symbol Parameter
Conditions
Min Typ Max Units
VDD Supply Voltage
-
4.5 5.0 5.5
V
VIH CMOS Input High Voltage
VDD = 5.5V
0.8 VDD
-
VDD
V
VIL CMOS Input Low Voltage
VDD = 5.5V
VSS - 0.2 VDD V
VOH CMOS Output High Voltage
VDD = 5V, IOH = -1.0mA
VDD-0.5
-
-
V
VOL CMOS Output Low Voltage
VDD = 5V, IOL = 4.0mA - - 0.4 V
IIL Input Leakage Current
VDD = 5.5V, VIN = VSS or VDD
-10
-
10 µA
IPDL Input Pull-Down Current
VDD = 5.5V, VIN = VSS or VDD
-20
-
150 µA
IDD1 Static Power Supply Current
VDD = 5.5V
- 0.1 2.5 mA
IDD2 Dynamic Power Supply Current
CLK = 10MHz, VDD = 5.5V
-
3 10 mA
Notes: 1. VDD = 5V±10%, over full operating temperature range. 2. Total dose radiation not exceeding 1x105 Rads(Si)
3. Mil-Std-883, method 5005, subgroups 1, 2, 3
Table 4: DC Electrical Characteristics
AC CHARACTERISTICS
No. Parameter
Min. Max. Units
1 CLK hlgh to CLKS
2 CLK high to SYZ or SZY
3 SMC hold after CLK low
4 SMC setup to CLK low
5 MSG set up to CLKS high
6 MSG hold after CLKS high
7 MSG to RSE_OUT propagation delay
8 CLKS to RSE_OUT (SMC low)
9 CLK to CLK_OUT propagation delay
10 CE_IN setup to CE_CLK hlgh
11 CE_IN hold after CE_CLK high
12 CE_CLK to CE_OUT
13 CLK CYCLE TIME
- 25
- 30
0-
30 -
10 -
10 -
- 30
- 25
- 25
10 -
10 -
- 25
100 -
Table 5: AC Electrical Characteristics
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Note: Mil-Std-883, method 5005,
subgroups 9, 10, 11
5/11
5 Page 
ORDERING INFORMATION
Unique Circuit Designator
Radiation Tolerance
S Radiation Hard Processing
R 100 kRads (Si) Guaranteed
Q 300 kRads (Si) Guaranteed
H 1000 kRads (Si) Guaranteed
MAx1916xxxxx
Package Type
C Ceramic DIL (Solder Seal)
F Flatpack (Solder Seal)
L Leadless Chip Carrier
For details of reliability, QA/QC, test and assembly
options, see ‘Manufacturing Capability and Quality
Assurance Standards’ Section 9.
MA1916
QA/QCI Process
(See Section 9 Part 4)
Test Process
(See Section 9 Part 3)
Assembly Process
(See Section 9 Part 2)
Reliability Level
L Rel 0
C Rel 1
D Rel 2
E Rel 3/4/5/STACK
B Class B
S Class S
http://www.dynexsemi.com
e-mail: [email protected]
HEADQUARTERS OPERATIONS
DYNEX SEMICONDUCTOR LTD
Doddington Road, Lincoln.
Lincolnshire. LN6 3LF. United Kingdom.
Tel: 00-44-(0)1522-500500
Fax: 00-44-(0)1522-500550
DYNEX POWER INC.
Unit 7 - 58 Antares Drive,
Nepean, Ontario, Canada K2E 7W6.
Tel: 613.723.7035
Fax: 613.723.1518
Toll Free: 1.888.33.DYNEX (39639)
CUSTOMER SERVICE CENTRES
France, Benelux, Italy and Spain Tel: +33 (0)1 69 18 90 00. Fax: +33 (0)1 64 46 54 50
North America Tel: 011-800-5554-5554. Fax: 011-800-5444-5444
UK, Germany, Scandinavia & Rest Of World Tel: +44 (0)1522 500500. Fax: +44 (0)1522 500020
SALES OFFICES
France, Benelux, Italy and Spain Tel: +33 (0)1 69 18 90 00. Fax: +33 (0)1 64 46 54 50
Germany Tel: 07351 827723
North America Tel: (613) 723-7035. Fax: (613) 723-1518. Toll Free: 1.888.33.DYNEX (39639) /
Tel: (831) 440-1988. Fax: (831) 440-1989 / Tel: (949) 733-3005. Fax: (949) 733-2986.
UK, Germany, Scandinavia & Rest Of World Tel: +44 (0)1522 500500. Fax: +44 (0)1522 500020
These offices are supported by Representatives and Distributors in many countries world-wide.
© Dynex Semiconductor 2000 Publication No. DS3590-5 Issue No. 5.0 January 2000
TECHNICAL DOCUMENTATION – NOT FOR RESALE. PRINTED IN UNITED KINGDOM
Datasheet Annotations:
Dynex Semiconductor annotate datasheets in the top right hard corner of the front page, to indicate product status. The annotations are as follows:-
Target Information: This is the most tentative form of information and represents a very preliminary specification. No actual design work on the product has been started.
Preliminary Information: The product is in design and development. The datasheet represents the product as it is understood but details may change.
Advance Information: The product design is complete and final characterisation for volume production is well in hand.
No Annotation: The product parameters are fixed and the product is available to datasheet specification.
This publication is issued to provide information only which (unless agreed by the Company in writing) may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded
as a representation relating to the products or services concerned. No warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. The Company
reserves the right to alter without prior notice the specification, design or price of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute any
guarantee that such methods of use will be satisfactory in a specific piece of equipment. It is the user's responsibility to fully determine the performance and suitability of any equipment using such information and
to ensure that any publication or data used is up to date and has not been superseded. These products are not suitable for use in any medical products whose failure to perform may result in significant injury
or death to the user. All products and materials are sold and services provided subject to the Company's conditions of sale, which are available on request.
All brand names and product names used in this publication are trademarks, registered trademarks or trade names of their respective owners.
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| PDF Descargar | [ Datasheet MA1916.PDF ] | |
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