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参数资料
| 型号： | MC44BC374EJBR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 12/24页 |
| 文件大小： | 0K |
| 描述： | IC MODULATOR ANT BOOSTER 24TSSOP |
| 标准包装： | 2,500 |
| 类型： | 调制器 |
| 应用： | 机顶盒 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 24-TSSOP |
| 包装： | 带卷 (TR) |
MC44BC373/374 Technical Data
Features
1 Features
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 6.5 MHz 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 1 kHz 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 (40 MHz to 860 MHz)
Custom masked versions with unique start-up settings possible
(no I2C bus programming required)
Extremely robust ESD protection, minimum 4kV, typical 6kV
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC44BC374T1 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:PLL Tuned PAL/NTSC UHF and VHF Audio/ Video High Integration Modulator IC |
| MC44BC374T1D | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC44BC375 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:PLL Tuned VHF Audio/ Video High Integration Modulator ICs |
| MC44BC375J | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:PLL Tuned VHF Audio/ Video High Integration Modulator ICs |
| MC44BC375JD | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:PLL Tuned VHF Audio/Video High Integration Modulator ICs |
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