PRODUCT INFORMATION |
|
RF Components |
|
APPLICATIONS: |
Group |
|
|
|
• |
|
Television/VCR |
|
• |
E225x and E235x |
Satellite receivers |
• |
|
• |
|
|
Multi-media adapters |
Series PAL Format |
Video signal converters |
|
|
Electronic Television |
E2258T2 PACKAGAGE |
|
|
Modulators |
|
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 |
E225-1 |
• High level of integration E2258T2 meets CENELEC emissions |
|
requirements |
PROGRAMMABLE OPTIONS |
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 instead of the previous screwdriver setting, providing software flexibility 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 programming the E225X and E235X modulator models.
•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 |
MODULATION |
PLL SETS |
|
FORMAT |
FACTOR |
|||
|
|
|
|
|
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 |
|
|
|
|
|