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參數資料
| 型號： | MC44355DW |
| 廠商： | MOTOROLA INC |
| 元件分類： | 消費家電 |
| 英文描述： | MULTI.STANDARD AND PAL/NTSC MODULATOR ICs |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO20 |
| 封裝： | PLASTIC, SO-20 |
| 文件頁數： | 1/20頁 |
| 文件大小： | 438K |
| 代理商： | MC44355DW |
SEMICONDUCTOR
TECHNICAL DATA
MULTI–STANDARD
AND PAL/NTSC
MODULATOR ICs
DW SUFFIX
PLASTIC PACKAGE
CASE 751D
(SO–20L)
20
1
PIN CONNECTIONS
Order this document by MC44353/D
DTB SUFFIX
PLASTIC PACKAGE
CASE 948E
(TSSOP–20)
20
1
3
4
5
6
7
11
8
9
10
(Top View)
VCCD
Osc Gnd
Osc
Osc
Snd Fil
Snd Tun
Pre–Em
Audio In
12 VCCA
13 Video In
14 Mod Gnd
15 RF Out
16 VCC Mod
17 Mod Gnd
Osc Gnd
18 SCL
1
2
20
19 SDA
Amp In
Op Out
Xtal
1
! !
!
"
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
μ
A)
Transient Output Inhibit During PLL Lock–Up at Power–On
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
MC44353DTB
TA= –20
TA = –20
to +80
°
°
C
TSSOP–20
MC44353DW
SO–20L
MC44354DTB
TSSOP–20
MC44354DW
SO–20L
MC44355DTB
TSSOP–20
MC44355DW
SO–20L
This document contains information on a new product. Specifications and information herein
are subject to change without notice.
Motorola, Inc. 1998
Rev 0
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