MC44CC373CA Datasheet, PDF (1/28 Pages) Freescale Semiconductor, Inc – CMOS Audio/Video RF Modulators

Freescale Semiconductor
Document Number: MC44CC373
Rev 3.2, 04/2009
CMOS Audio/Video RF Modulators
The MC44CC373 / MC44CC374 CMOS family of RF modulators is the latest
generation of the legacy MC44BS373/4 family of devices.
The MC44CC373/MC44CC374 RF modulators are designed for use in VCRs,
set-top boxes, and similar devices.They support multiple standards, and can be
programmed to support PAL, SECAM, or NTSC formats.
The devices are programmed by a high-speed I²C Bus.
A programmable, internal PLL, with on-chip LC tank covers the full UHF range.
The modulators incorporate a programmable, on-chip, sound subcarrier oscil-
lator that covers all broadcast standards. No external tank circuit components
are required, reducing PCB complexity and the need for external adjustments.
The PLL obtains its reference from a low cost 4 MHz crystal oscillator.
The devices are available in a 16-pin SOIC, Pb-free package. These parts are
functionally equivalent to the MC44BS373/4 series, but are not direct drop-in re-
placements.
All devices now include the AUX_IN found previously only on the 20-pin pack-
age option of the MC44BS373. This is a direct input for a modulated subcarrier
and is useful in BTSC or NICAM stereo sound or other subcarrier applications.
The MC44CC373CASEF has a secondary I²C address for applications using
two modulators on one I²C Bus.
MC44CC373CA
MC44CC373CAS
MC44CC374CA
MC44CC374T1A
CMOS AUDIO/VIDEO
RF MODULATORS
EF SUFFIX
SOIC-16 PACKAGE
CASE 751B-05
Features
• Multi-TV standard support: NTSC, PAL, SECAM (B/G,
I, D/K, L, M/N).
• UHF operation (460MHz to 880MHz)
• Programmable UHF oscillator and sound subcarrier
oscillator.
• On-chip tank circuits. No external varicaps inductors or
tuned components required.
• Program control via 800 kHz high-speed I²C-bus.
• Programmable Sound reference frequency (31.25 kHz
or 62.5 kHz)
• Direct sound modulator input (FM and AM).
• Auxiliary input bypasses AM/FM modulators for
NICAM or BTSC applications.
• Video modulation depth (96% typ. in system L and
85% typ. in the other standards)
• Programmable Peak White Clip levels
• On-chip video test pattern generator with sound test
signal (1 kHz)
• Low-power standby mode
• Output inhibit during PLL Lock-up at power-ON
• Logical output port controlled by I²C-bus
Orderable Part Number⁽¹⁾
MC44CC373CAEF, R2
MC44CC373CASEF, R2
MC44CC374CAEF, R2
MC44CC374T1AEF, R2
ORDERING INFORMATION
Replaces Part
Number
Default
Frequency
(MHz)
RF_OUT(2)
(dBμV)
I²C
Write
Address
MC44BS373CAD
MC44BS373CAEF
591.25
89
0xCA
MC44BS373CAFC
MC44BS373CAFC
591.25
89
0xCE
MC44BS374CAD
591.25
89
MC44BS374CAEF
0xCA
MC44BS374T1D
871.25
89
MC44BS374T1EF
0xCA
MC44BS374T1AD
871.25
89
MC44BS374T1AEF
0xCA
PAL or
SECAM
NTSC (system L)
Capability Capability
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
No
AUX_IN
Yes
Yes
Yes
Yes
Yes
1. All orderable parts are in a 16-pin SOIC, with temperature range of 0°C to +70°C ambient. For tape and reel, add the R2 suffix.
2. Refer to application note to obtain 82 dBμV or other RF levels.
This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2008, 2009. All rights reserved.