P
RODUCT
I
NFORMATION
RF Components
Group
APPLICATIONS:
Television/VCR
Satellite receivers
Multi-media adapters
Video signal converters
E225x and E235x
Series PAL Format
Electronic Television
Modulators
FEATURES
Power supply: 5 V
Small Size: 44 mm 44 mm 17 mm
Common Footprint
Common Electrical Interface
Standard pin-pitch between models
I
2
C bus serial PLL control
Same input connector locations between models
Reduced component count
High level of integration E2258T2 meets CENELEC emissions
requirements
DESCRIPTION
The E225x and E235x Series Modulators are new PAL format
modulators with the output frequency set by a PLL.
These modulators provide direct Phase-Locked Loop tuning in-
stead of the previous screwdriver setting, providing software flexibil-
ity over output channel control. The output may be tuned over the
PAL channel range of 21 ~ 69.
These two new modulator series retain the common modulator
mechanical footprint of previous designs. A variety of versions and
options are available, as shown in the table.
The PLL programming is provided by an I
2
C serial bus interface.
Modulation factors of 100% and 55% are available.
Test and evaluation software is available upon request for pro-
gramming the E225X and E235X modulator models.
E2258T2 PACKAGAGE
E225-1
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SELECTION GUIDE
PROGRAMMABLE OPTIONS
Output frequency
Test Signal Generator (TSG) On/Off
Test Modes On/Off
Intercarrier spacing for output Mode G/I/K (E2354T)
Audio carrier level: -10 to -17 dB with respect to the Video
carrier (E2354T)
P
RODUCT
I
NFORMATION
Sharp Electronics
Corporation Regional
Sales Offices
North American
Headquarters
Camas, WA
Ph (360) 834-2500
Fax (360) 834-8903
West
Irvine, CA
Ph (714) 250-0225
Fax (714) 250-0438
San Jose, CA
Ph (408) 436-4900
Fax (408) 436-0924
Central
Romeoville, IL
Ph (708) 226-2400
Fax (708) 759-8572
Auburn Hills, MI
Ph (810) 377-9220
Fax (810) 377-9222
Austin, TX
Ph (512) 349-7262
Fax (512) 349-7002
DFW Airport, TX
Ph (214) 574-5205
Fax (214) 456-0360
Houston, TX
Ph (713) 955-9909
Fax (713) 955-9910
East
Burlington, MA
Ph (617) 270-7979
Fax (617) 229-9117
Annadale, NJ
Ph (908) 713-0505
Fax (908) 713-0566
Durham, NC
Ph (919) 941-0065
Fax (919) 941-0066
Distributors
Future Electronics
Canada
Ph (514) 694-7710
Fax (514) 695-3707
Marshall Industries
El Monte, CA
Ph (800) 522-0084
Fax (818) 307-6173
URL http://www.marshall.com
Milgray
Farmindale, NY
Ph (800) MILGRAY (645-4729)
Fax (516) 293-6465
Reptron
Tampa, FL
Ph (800) 659-1361
Fax (813) 854-2351
Sterling Electronics Corp.
Houston, TX
Ph (800) 745-5500
Fax (713) 629-3939
FastFax Service: 1-800-833-9437
Product Information: 1-800-642-0261
World Wide Web Site: http://www.sharpmeg.com
Copyright 1997, Sharp Electronics Corp. All rights reserved. All tradenames are the registered property of their respective owners. Specifications are subject to change without notice.
SMT97029
BASIC BLOCK DIAGRAM
ANTENNA
IN
RF CARRIER
OSCILLATOR
VIDEO
CLAMP
WHITE
CLIP
MODULATION
PLL
I
2
C
PRE-
EMPHASIS
FM MODULATOR
OSCILLATOR
CLOCK
DATA
TV
OUT
6 MHz
TANK
5.5 MHz
TANK
VIDEO
IN
AUDIO
IN
E225-2
8.5
1.3
2.6
4.24
1.5
6.6
M2.6 TAP
22.5
9.6
5.35
0.5
2.0
8.0
17.0
44.0
26.7
10.0
12.0
28.0
ANT - IN
(IEC - F)
CH.
SELECTOR
TV - OUT
(IEC-M)
2.5
44.0
40.8
42.0
8.5
17.0
22.0
24.0
3.5
8 - 2.5
13.7
46.0
46.5
10.7
A
A'
2.0
5.7
0.6
2.0
0.8
(42)
0.4
(S = 2/1)
(S = 2/1)
A - A'
0.6
NAME
BT (33 V)
VIDEO IN
AUDIO IN
MD +B (5 V)
NC
NC
CLOCK
DATA
NC
5
6
7
8
9
4
1
2
3
NO.
9
1
E225-3
NOTES:
1. Dimensions are in mm.
2. Tolerances are
0.5 unless otherwise specified.
PAL
SELECTER SW
TRAVEL: 2
G
I
MECHANICAL DIMENSIONS
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