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PRODUCT INFORMATION
E225x and E235x
Series PAL Format
Electronic Television
Modulators
APPLICATIONS:
Television/VCR
Satellite receivers
Multi-media adapters
Video signal converters
E2258T2 PACKAGAGE
RF Components
Group
FEATURES
• Power supply: 5 V
• Small Size: 44 mm × 44 mm × 17 mm
• Common Footprint
• Common Electrical Interface
• Standard pin-pitch between models
• I2C 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 I2C 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.
E225-1
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)
SELECTION GUIDE
MODEL
PAL
FORMAT
MODULATION
FACTOR
PLL SETS
E2251T G
100% Channel, TSG, RF On/Off
E2251TA G
55% Channel, TSG, RF On/Off
E2258TA G/I
55% Channel, TSG, RF On/Off
E2258T2 G/I
55% Channel, TSG, RF On/Off
E2354T G/I/K
100%
Channel, TSG, Format, Power
Save On/Off, Video/Audio Ratio
E2358T G/I
100% Channel, TSG, RF On/Off

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PRODUCT INFORMATION
BASIC BLOCK DIAGRAM
ANTENNA
IN
TV
OUT
VIDEO
IN
VIDEO
CLAMP
WHITE
CLIP
MODULATION
RF CARRIER
OSCILLATOR
PLL
I2C
AUDIO
IN
PRE-
EMPHASIS
FM MODULATOR
OSCILLATOR
CLOCK
DATA
6 MHz
TANK
5.5 MHz
TANK
MECHANICAL DIMENSIONS
(S = 2/1)
4.24
2.6
0.5 5.7
5.35
1.3
2.0 8.0 2.0
17.0
8.5
17.0
8.5
CH.
SELECTOR
A - A'
M2.6 TAP
1.5
22.5
A A'
6.6
9.6
10.7
44.0
26.7
10.0
12.0
TV - OUT
(IEC-M)
22.0
46.5 46.0
24.0
13.7
G
I
PAL
SELECTER SW
TRAVEL: 2
(S = 2/1)
0.8
0.6
2.0
1
0.4 0.6
(42)
NOTES:
1. Dimensions are in mm.
2. Tolerances are ±0.5 unless otherwise specified.
8 - 2.5
9
40.8
42.0
3.5
28.0 44.0
φ2.5
ANT - IN
(IEC - F)
NO.
NAME
1 BT (33 V)
2 VIDEO IN
3 AUDIO IN
4 MD +B (5 V)
5 NC
6 NC
7 CLOCK
8 DATA
9 NC
E225-3
FastFax Service: 1-800-833-9437
Product Information: 1-800-642-0261
World Wide Web Site: http://www.sharpmeg.com
E225-2
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
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Ph (408) 436-4900
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Ph (708) 226-2400
Fax (708) 759-8572
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Ph (810) 377-9220
Fax (810) 377-9222
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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
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