MC44BC375UAFCR2 Freescale Semiconductor, MC44BC375UAFCR2 Datasheet

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MC44BC375UAFCR2

Manufacturer Part Number
MC44BC375UAFCR2
Description
IC MODULATOR AUD/VID VHF 20-QFN
Manufacturer
Freescale Semiconductor
Type
Modulatorr
Datasheet

Specifications of MC44BC375UAFCR2

Applications
Set-Top Boxes
Mounting Type
Surface Mount
Package / Case
*
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Freescale Semiconductor
Data Sheet
© Freescale Semiconductor, Inc., 2006. All rights reserved.
PLL Tuned VHF (Channel 3 / 4)
Audio / Video Modulator
use in VCRs, set-top boxes, and similar devices. They are designed for applica-
tions requiring National Television System Committee, NTSC, channel 3 or chan-
nel 4, RF outputs. The difference between the two modulators is the RF output
power level. The nominal RF
and the RF
sired channel 3 or 4 frequency isselected using the external package pin, Chan-
nel Selection (CHS). No external tank circuit components are required, reducing
the sensitivity of the PCB design and the need for external adjustments. The PLL
obtains its reference from a 4.0 MHz crystal oscillator.
programmable PLL to derive subcarrier frequencies. The 4.5 MHz or 5.5 MHz
sound carrier frequency is selectable via the package pin, Sound Frequency Se-
lection (SFS). The Picture to Sound subcarrier ratio is also selectable by the pin,
Picture to Sound Selection (PSS), to choose either a 14 dB or 16 dB ratio.
all internal VCOs and mixers and simultaneously switches ON an output pin,
Logic Output Port (LOP), which may be used as an antenna switch driver.
Features
The MC44BC375U and MC44BC375UA are audio/video RF modulators for
The modulators incorporate a sound subcarrier oscillator and use a second
A low-power standby mode is selectable via the pin, Psave/LO, which turns off
Video In
Audio In
A programmable Phase-Locked Loop (PLL) tunes the modulator, and the de-
Two RF output power levels offered:
U.S. broadcast frequency for Channel 3 or 4 operation is selected by CHS pin
Programmable VHF oscillator and sound subcarrier oscillator. No external varicaps,
diodes/inductors, or tuned components required.
Programmable Picture/Sound Carrier Ratio (14 dB or 16 dB) is selected by PSS pin
Programmable Sound Subcarrier Oscillator (4.5 or 5.5 MHz) is selected by SFS pin)
Peak White Clip
Low-power standby mode is selected by the Psave/LO pin
Logic Output Port is selected by Psave/LO pin (Antenna Switch Driver)
Transient output inhibit during PLL Lock-up at power-ON
Available in Pb-free, RoHS compliant, narrow body SOIC 16 package
Also available, for a limited time, in the standard Pb package with the D suffix
Crystal
MC44BC375U has typical RF
MC44BC375UA has typical RF
OUT
level for the MC44BC375UA is 80 dBµV (typical).
AM/FM
Clamp
Audio
Clip
MC44BC375U/UA
Channel 3/4
OUT
Control
VCO
level for the MC44BC375U is 76 dBµV (typical)
OUT
OUT
power of 76 dBµV
Mixer
Mixer
power of 80 dBµV
Σ
TVOUT
Note: For tape and reel, add the R2 suffix.
MC44BC375UAEF, R2
MC44BC375UAD, R2
MC44BC375UEF, R2
MC44BC375UD, R2
Device
ORDERING INFORMATION
Document Number: MC44BC375U
AUDIO / VIDEO MODULATOR
MC44BC375UA
MC44BC375U
-20°C to +85°C
-20°C to +85°C
-20°C to +85°C
-20°C to +85°C
Temp. Range
SOIC 16 PACKAGE
PLL TUNED VHF
(CHANNEL 3 / 4)
D or EF SUFFIX
CASE 751B-05
Rev 3, 8/2006
RoHS
Yes
Yes
No
No

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MC44BC375UAFCR2 Summary of contents

Page 1

... Also available, for a limited time, in the standard Pb package with the D suffix MC44BC375U/UA Clamp Video In Clip VCO Crystal AM/FM Audio In Audio Control Channel 3/4 © Freescale Semiconductor, Inc., 2006. All rights reserved. power of 76 dBµV power of 80 dBµV OUT Mixer Σ TVOUT MC44BC375UEF, R2 MC44BC375UAEF, R2 MC44BC375UD, R2 Mixer MC44BC375UAD, R2 Note: For tape and reel, add the R2 suffix ...

Page 2

... Sound PLL loop filter Power save mode and LO control Video input IN Main analog supply voltage CC Analog ground RF output signal OUT RFoutput stage supply voltage CC RF PLL loop filter Sound frequency select (Low = 5.5 MHz, High = MHz 4.5 MHz) CC Application Specific Products Freescale Semiconductor ...

Page 3

... The sound oscillator, UHF oscillator and VHF dividers, video and sound modulator sections bias are internally turned OFF. Application Specific Products Freescale Semiconductor FUNCTIONAL OVERVIEW 2. A modulator section which accepts audio and video inputs and modulates the VHF carrier. ...

Page 4

... By default (open condition), all pins are “HI”. Table 2. Configuration Pin Settings Pin No Pin Name 1 CHS 2 PSS 9 PSave/ Power save Mode LOP 16 SFS LO (grounded) HI (open or +5.0 V) CH4 CH3 Normal Operation LOP pin LO LOP pin HI (Low voltage) (High impedance) 5.5 MHz 4.5 MHz Application Specific Products Freescale Semiconductor ...

Page 5

... Total standby mode supply current Sound comparator charge pump current: RF comparator charge pump current Crystal oscillator stability-negative resistance Threshold level on pins: CHS, PSS, SFS, Psave/LO Logic Output Port: Saturation voltage at I Ambient Temperature Application Specific Products Freescale Semiconductor ELECTRICAL SPECIFICATIONS Symbol Min V -0 -0.3 ...

Page 6

... Typ Max Unit -1.5 -0.5 — dB — — 1.5 Vcvbs µA — 0.2 1.0 — 500 — KΩ — — — — ±1.0 — deg — 1.0 5.0 % 6.8/3.2 — 7.2/2.8 — 90.5 95 99.5 % Application Specific Products Freescale Semiconductor Type Type ...

Page 7

... Reference 1.0 KHz, Measure from KHz Depends on loop filter components Audio Distortion FM (THD only) At 1.0 KHz, 100% modulation (±50 KHz) No video Audio S/N with Sync Buzz FM 1. See Performance Measurement Test Set-ups, Application Specific Products Freescale Semiconductor (1) Min Test Conditions 14 12 1.5 75 ...

Page 8

... Measure in dBc, in reference to picture carrier (RFout_Ref), second harmonic of chroma at channel frequency plus 2 times chroma frequency, resulting in the following spectrum. Picture carrier Chroma carrier Fo +4.43 MHz +5.5 MHz Sound 2nd harm Sound 3rd harm +11 MHz +16.5 MHz Sound carrier Chroma 2nd Harmonic +8.86 MHz Application Specific Products Freescale Semiconductor ...

Page 9

... Video: 600 mV sinusoidal signal inserted (pp) on the black level of active video area. Application Specific Products Freescale Semiconductor Measurement Set-Up Chroma/Sound Intermodulation Measure in dBc, in reference to picture carrier (RFout_Ref), intermodulation product at channel frequency plus the sound carrier frequency (+5.5 MHz) minus the chroma frequency (-4.43 MHz), resulting in the following spectrum. ...

Page 10

... CCIR 330. the largest positive or negative difference = DIFF GAIN the amplitude at position 0 The video analyzer method takes the worst step from the first 4 steps. CCIR line 330 corresponds to FCC line 17 in NTSC/M standard 100 100% Application Specific Products Freescale Semiconductor ...

Page 11

... Audio analyzer is varied to obtain a deviation of 50 KHz indicated on the Demodulator. Application Specific Products Freescale Semiconductor Measurement Set-Up Video Modulation Depth This is measured using a HP8596E Spectrum Analyzer with a TV Trigger option, allowing demodulation and triggering on any specified TV Line. The analyzer is centered on the maximum peak of the Video signal and reduced to zero Hertz span in Linear mode to demodulate the Video carrier ...

Page 12

... PIN CIRCUIT SCHEMATICS Pin 8: SPLLFLT Pin 10: VIDEO Pin 13: RF Pin 14: RFOV 10k audio Pin 15: PLLFLT Figure 3. Pin Schematics ( ) ⁄ Signal + Noise Noise VCC VCC 5K VCC IN 500 10K 10K VCC OUT VCC 75 CC VCC VCC 100 2K Application Specific Products Freescale Semiconductor ...

Page 13

... Figure 4. Application Specific Products Freescale Semiconductor APPLICATION SCHEMATIC MC44BC375U/UA Application Schematic MC44BC375U 13 ...

Page 14

... MC44BC375U 14 PACKAGE DIMENSIONS Figure 5. SOIC16 Package Dimensions Application Specific Products Freescale Semiconductor ...

Page 15

... Application Specific Products Freescale Semiconductor Figure 6. SOIC16 Package Dimensions - part 2 MC44BC375U 15 ...

Page 16

... Freescale Semiconductor product could create a situation where personal injury or death may occur. Should Buyer ...

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