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MC44BC374CDTB中文资料飞思卡尔数据手册PDF规格书
MC44BC374CDTB规格书详情
Device Overview
Figure 2 shows a simplified block diagram of the MC44BC373C/4C device. The MC44BC373C/4C device has three main sections:
1. A high speed I2C-compatible bus section
2. A PLL section to synthesize the UHF/VHF output channel frequency (from an integrated UHF oscillator, divided for VHF output)
3. A modulator section, which accepts audio and video inputs, then uses them to modulate the UHF/VHF carrier
An on-chip video test pattern generator with an audio test signal is included.
Features
MC44BC373C: Multi-Standard PAL/SECAM/NTSC Modulator
MC44BC374C: PAL/NTSC only Modulator
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 6.5MHz subcarrier frequencies. These frequencies are selectable using the bus.
The modulation standard can be chosen using a control bit that selects between System L or System B/G (MC44BC373C only).
The picture-to-sound ratio may be adjusted using the bus. In addition, an on-chip video test pattern generator can be switched ON with a 1KHz audio test signal.
The MC44BC373C/4C also has the following features:
• No external varicaps diodes/inductor or tuned components
• Channel 21-69 UHF operation
• VHF range possible by internal dividers (30MHz–450MHz)
• Integrated on-chip programmable UHF oscillator
• Extremely low external components 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 via 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
• Transient output inhibit during PLL Lock-up at power-ON
• Logical Output Port controlled by bus
• Custom masked versions with unique start-up settings possible (no I2C bus programming required)
• Extremely robust ESD protection, minimum 4kV, typical 6kV
产品属性
- 型号:
MC44BC374CDTB
- 制造商:
Rochester Electronics LLC
- 功能描述:
- Bulk
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
FREESCULE |
2016+ |
SOP16 |
3000 |
只做原装,假一罚十,公司可开17%增值税发票! |
询价 | ||
MOTOROL |
24+ |
TSSOP-1 |
80000 |
只做自己库存,全新原装进口正品假一赔百,可开13%增 |
询价 | ||
MOTOROLA/摩托罗拉 |
25+ |
TSSOP-16 |
65428 |
百分百原装现货 实单必成 |
询价 | ||
MOTOROLA |
03+ |
MSOP-16 |
2500 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 | ||
MOT |
23+ |
NA |
13650 |
原装正品,假一罚百! |
询价 | ||
MOT |
23+ |
TSSOP |
9526 |
询价 | |||
FREESCALE |
23+ |
NA |
19960 |
只做进口原装,终端工厂免费送样 |
询价 | ||
FREESCULE |
SOP16 |
9850 |
一级代理 原装正品假一罚十价格优势长期供货 |
询价 | |||
MOT |
25+23+ |
TSSOP-16 |
8253 |
绝对原装正品全新进口深圳现货 |
询价 | ||
MOT |
2016+ |
TSSOP-16 |
6528 |
只做原厂原装现货!终端客户个别型号可以免费送样品! |
询价 |