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Motorola Electronic Components Datasheet

44BC374 Datasheet

MC44BC374

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44BC374 pdf
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MC44BC373/374
Rev. 3.5, 7/2003
MC44BC373/374
Multi-Standard or PAL/
NTSC Modulator with
integrated antenna
booster/splitter ICs
Freescale Semiconductor, Inc.
MC44BC373/374
TSSOP 24 Package
Ordering Information
Device
Temp Range
Package
MC44BC373DTB, R2
MC44BC374DTB, R2
–10oC to +80oC
TSSOP 24
NOTE: For tape and reel, add R2 suffix.
Contents
1 Features . . . . . . . . . . . . . 2
2 Device Overview . . . . . . 3
3 Maximum Ratings . . . . . 5
4 Electrostatic Discharge 5
5 Electrical
Characteristics
5
6 I2C Bit Mapping . . . . . . . 6
7 I2C Programming . . . . . 7
8 Modulator High
Frequency
Characteristics
9
9 Video Characteristics . 10
10 Audio Characteristics . 11
11 Antenna Booster/Splitter
Characteristics
12
12 Modulator Operation . 14
13 High-Speed I2C
Compatible Bus
18
14 Application and
Case Diagrams
21
These modulator ICs are for use in VCRs, games, set-top boxes, and similar devices.
Figure 1 shows the pin connections.
SCL 1 24 GNDD
SDA 2 23 VCCD
LOP 3 22 PLLFLT
XTAL 4 21 TVOVCC
GND 5 20 TVOUT
ANT1 6 19 GND
ANT2 7 18 GND
GND 8 17 VCRTU
PREEM 9 16 VCRVCC
AUDIO 10 15 VCCA
SPLFLT 11 14 VIDEO
AUXIN 12 13 VCCI
Figure 1. MC44BC373/374 Pin Connections
This document contains information on a product under development. Motorola reserves the right to change or
discontinue this product without notice. © Motorola, Inc., 2003. All rights reserved.
For More Information On This Product,
Go to: www.freescale.com


Motorola Electronic Components Datasheet

44BC374 Datasheet

MC44BC374

No Preview Available !

44BC374 pdf
Features
Freescale Semiconductor, Inc.
www.DataSh1eet4UF.coematures
MC44BC373: Multi-Standard PAL/SECAM/NTSC with integrated booster splitter
MC44BC374: PAL/NTSC with integrated booster splitter
The channel is set by an on-chip high-speed I2C compatible bus receiver. A Phase-Locked Loop (PLL) tunes
the modulator over the full UHF range. The modulator incorporates a sound subcarrier oscillator and uses
a second PLL to derive 4.5, 5.5, 6.0, and 6.5MHz subcarrier frequencies. These frequencies are selected
using the bus.
The picture-to-sound ratio is adjusted using the bus. In addition, an on-chip video test pattern generator can
be switched ON using a 1kHz audio test signal.
Along with the modulator functions, an Antenna Booster/Splitter function is included.
These modulator versions are completely pin-to-pin and software compatible and all versions have the
following features.
• No external varicaps diodes/inductors or tuned components
• Channel 21–69 UHF operation
• VHF range possible by internal dividers (30MHz to 450MHz)
• Integrated on-chip programmable UHF oscillator
• Extremely low external component count
• High-speed read and write I2C-bus compatible (800kHz)
• Fixed video modulation depth (80% in PAL and 90% in SECAM)
• Peak White Clip disabled using the bus
• Programmable picture/sound carrier ratio (12dB and 16dB)
• Integrated on-chip programmable sound subcarrier oscillator
(4.5MHz to 6.5MHz)—No external varicaps
• On-chip video test pattern generator with sound test signal (1kHz)
• Low-power programmable modulator standby mode
(booster active)
• Transient output inhibit during PLL Lock-up at Power-ON
• Logical Output Port controlled by bus
• Integrated Antenna Booster/Splitter (40MHz to 860MHz)
• Custom masked versions with unique start-up settings possible
(no I2C bus programming required)
• Extremely robust ESD protection, minimum 4kV, typical 6kV
2
MC44BC373/374 Technical Data
MOTOROLA
For More Information On This Product,
Go to: www.freescale.com


Part Number 44BC374
Description MC44BC374
Maker Motorola
Total Page 24 Pages
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