MC44353 Datasheet, PDF (1/20 Pages) Motorola, Inc – MULTI–STANDARD AND PAL/NTSC MODULATOR ICs

Advance Information
PLL Tuned UHF Audio/Video
Modulator ICs for PAL, SECAM
and NTSC TV Systems
MC44353 – Multi–Standard Modulator IC
MC44354 – PAL/NTSC Modulator IC
MC44355 – PAL/NTSC Modulator IC with
MC44355 – Fixed Video Modulation Index
These modulator circuits are intended for use in VCRs, satellite receivers,
set–top boxes, video games, etc. An on–chip high speed I2C compatible bus
receiver is included and is used to set the channel, tuned by a PLL over the
full range in the UHF bands. The modulator incorporates a sound subcarrier
oscillator, using a second PLL to derive 4.5, 5.5, 6.0 and 6.5 MHz carrier
frequencies, selectable by the bus.
For the sound, either frequency modulation with pre–emphasis or
amplitude modulation (MC44353 only) is possible. A control bit (MC44353
only) is used to select AM sound with positive RF modulation (system L). The
level of the sound carrier with respect to the vision carrier and the modulation
depth of both sound and vision may be adjusted by means of the bus. In
addition, an on–chip video test pattern generator may be switched in with a
1.0 kHz audio test signal.
• Channel 21 through 69 UHF Operation (471 MHz to 855 MHz)
• On–Chip Low Power Operational Amplifier for Direct Tuning Varactor
Voltage
• Single–Ended Output for Low Cost and Ease of Interface
• Low External Component Count
• High Speed I2C Bus Compatible
• Programmable Video Modulation Depth (8 Steps of 2.5%)
• Programmable Picture/Sound Carriers Ratio and Audio Sensitivity
(8 Steps of 1.0 dB)
• On–Chip Programmable Sound Subcarrier Oscillator (4.5 MHz to
6.5 MHz)
• On–Chip Video Test Pattern Generator with Sound Test Signal (1.0 kHz)
• VCC Standby Mode (Typ 500 µA)
• Transient Output Inhibit During PLL Lock–Up at Power–On
Device
MC44353DTB
MC44353DW
MC44354DTB
MC44354DW
MC44355DTB
MC44355DW
ORDERING INFORMATION
Operating
Temperature Range
TA = –20° to +80°C
Package
TSSOP–20
SO–20L
TSSOP–20
SO–20L
TSSOP–20
SO–20L
Order this document by MC44353/D
MC44353
MC44354
MC44355
MULTI–STANDARD
AND PAL/NTSC
MODULATOR ICs
SEMICONDUCTOR
TECHNICAL DATA
20
1
DTB SUFFIX
PLASTIC PACKAGE
CASE 948E
(TSSOP–20)
20
1
DW SUFFIX
PLASTIC PACKAGE
CASE 751D
(SO–20L)
PIN CONNECTIONS
Amp In 1
Op Out 2
VCCD 3
Osc Gnd 4
Osc 5
Osc 6
Osc Gnd 7
Snd Fil 8
Snd Tun 9
Pre–Em 10
20 Xtal
19 SDA
18 SCL
17 Mod Gnd
16 VCC Mod
15 RF Out
14 Mod Gnd
13 Video In
12 VCCA
11 Audio In
(Top View)
This document contains information on a new product. Specifications and information herein
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© Motorola, Inc. 1998
Rev 0
1