MC44BC374EJB Freescale Semiconductor, MC44BC374EJB Datasheet - Page 3

• Manufacturer Part Number: MC44BC374EJB
• Description: IC MODULATOR ANT BOOSTER 24TSSOP
• Manufacturer: Freescale Semiconductor
• Type: Modulatorr

Specifications of MC44BC374EJB

• Applications: Set-Top Boxes
• Mounting Type: Surface Mount
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2 Device Overview
Figure 2 shows a simplified block diagram of the MC44BC373/4 device.
The MC44BC373/374 device contains four main sections:
The following items are programmable using the high-speed I
An on-chip video test pattern generator with an audio test signal is included.
The MC44BC373 operates as a multi-standard modulator and can handle the following systems using the
same external circuit components:
The high frequency BiCMOS technology permits integration of the following functions:
1. A high-speed I
2. A PLL section — Synthesizes the UHF/VHF output channel frequency (from an integrated
3. A modulator section — Accepts audio and video inputs and then uses those inputs to
4. An Antenna Booster/Splitter — Amplifies and splits the antenna signal into two signals:
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UHF oscillator, divided for VHF output).
modulate the UHF/VHF carrier.
a) The modulated signal is added to the amplified antenna signal on the TVOUT pin.
a)
Channel frequency
Sound frequency
Sound/picture carrier ratio
B/G
I
D/K
H
L
M/N
Antenna Booster/Splitter
UHF tank circuit and certain filtering
2
C-compatible bus section.
Freescale Semiconductor, Inc.
For More Information On This Product,
MC44BC373/374 Technical Data
Go to: www.freescale.com
2
C compatible bus:
Device Overview