19
LC-22LE240
CIRCUIT DESCRIPTIONS
1
. TUNER(TU3)
A horizontal mounted and Digital Half-Nim tuner is used in the product, which covers 3
Bands(From 48MHz to 862MHz for COFDM, from 45.25MHz to 863.25MHz for CCIR CH).
The tuning is available through the digitally controlled I2C bus (PLL). Below you will find
info about the tuner.
In active antenna option, the following circuit are used. ANT_CTRL pin is controlled by
microcontroller. If ANT_CTRL is low, ANT_PWR will be low. If ANT_CTRL is high,
ANT_PWR will be high.
OVER_CUR_DETECT pin is a monitor for short circuit in antenna. OVER_CUR_DETECT
is low, ANT_CTRL will be low, so ANT_PWR will be low. Finally, short circuit protection is
done by circuits and microcontroller.
1.1. General description of Sony RE216:
The SUT-RE216 is designed for terrestrial TV (digital & analog) and digital cable
reception. It includes a full band tuner and a channel filtering for digital signals. It provides
a low IF output after channel filtering to drive a channel demodulator. Tuning, band
switching and initialization are made via an I2C bus
interface. The module is built on a low-loss printed
circuit board carrying all the components in a metal
housing frame with top and rear covers. The single
aerial connector is mounted on one frame side and all
other connections are made via pins at the bottom.
Features:
Full frequency range from 47 to 870 Mhz
Digital Platform (DVB-T/T2, DVB-C, ISDB-T & ATSC)
Analog platforms (PAL B/G/I/D/K, NTSC M & SECAM L/L’)
Low IF tuner concept
Содержание LC-22LE240E
Страница 17: ...17 LC 22LE240 0 1 General Block Diagram 1 General Block Diagram ...
Страница 22: ...22 LC 22LE240 2 3 Absolute Ratings 2 3 1 Electrical Characteristics ...
Страница 23: ...23 LC 22LE240 2 3 2 Operating Specifications 2 4 Pinning 3 AUDIO AMPLIFIER STAGE WITH TPA3113 U168 ...
Страница 25: ...25 LC 22LE240 3 3 2 Operating Specifications 3 4 Pinning ...
Страница 29: ...29 LC 22LE240 4 1 Power Management MB62 Power Management with Adaptor MB62 Power Management with PW25 PW26 ...
Страница 30: ...30 LC 22LE240 MB62 Power Management with IPS16 IPS17 IPS60 PW05 MB62 Power Management with PW03 PW04 PW07 ...
Страница 38: ...38 LC 22LE240 Pinning 8 3 Pinning ...
Страница 50: ...50 LC 22LE240 18 2 HDMI CN707 CN708 18 3 VGA CN711 ...
Страница 52: ...52 LC 22LE240 19 1 Video Settings 19 1 Video Setting 19 2 Audio Settings 19 2 Audio Settings ...
Страница 53: ...53 LC 22LE240 19 3 Options 19 3 Options Options 1 Options 1 Options 2 Options 2 ...
Страница 54: ...54 LC 22LE240 19 4 Tuning Settings 19 5 Source Settings 19 4 Tuning Settings 19 5 Source Settings ...
Страница 74: ...74 LC 22LE240 POWER SUPPLY Diagram 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 I H G F E D C B A ...
Страница 75: ...75 LC 22LE240 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 I H G F E D C B A Led Converter Diagram ...
Страница 76: ...76 LC 22LE240 24 PRINTED WIRING BOARD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 I H G F E D C B A ...