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参数资料
| 型号： | MC44BC374EJB |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 6/24页 |
| 文件大小： | 0K |
| 描述： | IC MODULATOR ANT BOOSTER 24TSSOP |
| 标准包装： | 62 |
| 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： | 管件 |
MC44BC373/374 Technical Data
Modulator Operation
12 Modulator Operation
12.1 Power-ON Settings
At power-ON, the MC44BC373 and MC44BC374 configuration is as follows:
The settings indicated can be customized in the special masked version.
12.2 Power Supply
The five device Vcc pins (13, 15, 16, 21, 23 ) must be applied at the same time to ensure all internal blocks
are correctly biased. All other pins must not be biased before Vcc is applied to the device. The printed
circuit board layout of the Vcc supplies must be designed to ensure maximum isolation of the I/P to O /P
and also between the two O /Ps.
12.3 Standby Mode
During standby mode, the modulator is switched to low power consumption; the sound oscillator, UHF
oscillator, video and sound modulator sections bias are internally turned OFF.
The I2C bus and booster sections remain active.
The modulator can be programmed in standby mode using a combination of three bits:
1. OSC= 1
2. SO= 1
3. ATT=1
WRITE MODE
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ACK
C1—High Order Bits
10000000
ACK
C0—Low Order Bits
00001000
ACK
FM—High Order Bits
0
N11
N10
N9
N8
N7
N6
ACK
FL—Low Order Bits
N5
N4
N3
N2
N1
N0
0
ACK
Note:
1. N0 to N11 are set to have the UHF oscillator on channel 36 (591.25MHz).
Note:
2. Peak White Clip is ON.
Note:
3. Sound frequency is 5.5MHz.
Note:
4. Sound auxiliary input is disabled.
Note:
5. Logic Output Port is low voltage.
Note:
6. Picture-to-sound ratio is 12dB.
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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 |
|---|---|
| MC44BC374EJBR2 | 功能描述:IC MODULATOR ANT BOOSTER 24TSSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 视频处理 系列:- 产品变化通告:Product Discontinuation 07/Mar/2011 标准包装:3,000 系列:OMNITUNE™ 类型:调谐器 应用:移动电话，手机，视频显示器 安装类型:表面贴装 封装/外壳:65-WFBGA 供应商设备封装:PG-WFSGA-65 包装:带卷 (TR) 其它名称:SP000365064 |
| 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 |
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