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參數資料
| 型號： | MC44BC375UAFCR2 |
| 廠商： | Freescale Semiconductor |
| 文件頁數： | 1/16頁 |
| 文件大小： | 0K |
| 描述： | IC MODULATOR AUD/VID VHF 20-QFN |
| 標準包裝： | 2,500 |
| 類型： | 調制器 |
| 應用： | 機頂盒 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-VFQFN 裸露焊盤 |
| 供應商設備封裝： | 20-QFN 裸露焊盤（4x4） |
| 包裝： | 帶卷 (TR) |
Document Number: MC44BC375U
Rev 3, 8/2006
Freescale Semiconductor
Data Sheet
Freescale Semiconductor, Inc., 2006. All rights reserved.
PLL Tuned VHF (Channel 3 / 4)
Audio / Video Modulator
The MC44BC375U and MC44BC375UA are audio/video RF modulators for
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 RFOUT level for the MC44BC375U is 76 dBV (typical)
and the RFOUT level for the MC44BC375UA is 80 dBV (typical).
A programmable Phase-Locked Loop (PLL) tunes the modulator, and the de-
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.
The modulators incorporate a sound subcarrier oscillator and use a second
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.
A low-power standby mode is selectable via the pin, Psave/LO, which turns off
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
Two RF output power levels offered:
MC44BC375U has typical RFOUT power of 76 dBV
MC44BC375UA has typical RFOUT power of 80 dBV
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
MC44BC375U
MC44BC375UA
PLL TUNED VHF
(CHANNEL 3 / 4)
AUDIO / VIDEO MODULATOR
D or EF SUFFIX
SOIC 16 PACKAGE
CASE 751B-05
Crystal
Mixer
Clamp
Clip
VCO
AM/FM
Audio
Σ
Control
MC44BC375U/UA
Video In
Audio In
TVOUT
Channel 3/4
ORDERING INFORMATION
Device
Temp. Range
RoHS
MC44BC375UEF, R2
-20°C to +85°C
Yes
MC44BC375UAEF, R2
-20°C to +85°C
Yes
MC44BC375UD, R2
-20°C to +85°C
No
MC44BC375UAD, R2
-20°C to +85°C
No
Note: For tape and reel, add the R2 suffix.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MC44BC375UD | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:PLL Tuned VHF Audio/ Video High Integration Modulator ICs |
| MC44BC375UEF | 功能描述:IC A-VHF MODULATOR 16-SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 產品變化通告:Product Discontinuation 07/Mar/2011 標準包裝:3,000 系列:OMNITUNE™ 類型:調諧器 應用:移動電話，手機，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應商設備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱:SP000365064 |
| MC44BC375UEFR2 | 功能描述:IC A-VHF MODULATOR 16-SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 產品變化通告:Product Discontinuation 07/Mar/2011 標準包裝:3,000 系列:OMNITUNE™ 類型:調諧器 應用:移動電話，手機，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應商設備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱:SP000365064 |
| MC44BC375VAEFR2 | 制造商:Freescale Semiconductor 功能描述: |
| MC44BC380 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:VHF/ UHF ANTENNA BOOSTER/SPLITTER IC |
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