- 您现在的位置：买卖IC网 > PDF目录10557 > MC44BC375UEFR2 (Freescale Semiconductor)IC A-VHF MODULATOR 16-SOIC PDF资料下载
参数资料
| 型号： | MC44BC375UEFR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 5/20页 |
| 文件大小： | 0K |
| 描述： | IC A-VHF MODULATOR 16-SOIC |
| 标准包装： | 1 |
| 类型： | 调制器 |
| 应用： | 机顶盒 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC N |
| 包装： | 标准包装 |
| 其它名称： | MC44BC375UEFR2DKR |
Modulator Functionality
MC44BC375/U/J/T Technical Data
The audio pre-emphasis circuit is a high-pass filter with an external capacitor C1 and an internal resistor
(100 kOhms typical). The recommended capacitor value (750 pF) is for M/N standards; time constant is
75
s. It is 470pF for B/G standards (50s).
Audio bandwidth specification is for 50Hz to 15Khz range, with pre-emphasis circuit engaged. Without
this pre-emphasis circuit, it is possible to extend the audio bandwidth to the high frequencies as there is no
internal frequency limitation (stereo application).
12.8 PLL Section — Dividers
The reference divider is a fixed divide by 128 resulting in a reference frequency of 31.25Khz with a
4.0Mhz crystal. The 31.25Khz reference frequency is used for both UHF and Sound PLLs.
The prescaler is a fixed divide by 8 and is permanently engaged. The VHF divider is different for each of
the 3 versions.
The programmable divider’s division ratio is controlled by CHS pin voltage in order to get the following
VHF frequencies:
12.9 Selectable Pins
Pins CHS, PSS, SFS are internally pulled up to 5V.
Device
Channel
VHF divider
MC44BC375U
CH3 = 61.25Mhz
8
CH4 = 67.25Mhz
MC44BC375J
CH1 = 91.25Mhz
6
CH2 = 97.25Mhz
MC44BC375T
CH13 = 211.25Mhz
3
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
相关PDF资料 |
PDF描述 |
|---|---|
| VI-JV2-MY-F3 | CONVERTER MOD DC/DC 15V 50W |
| VI-JV2-MY-F2 | CONVERTER MOD DC/DC 15V 50W |
| PX0911/04/S | CONN PLUG 4POS W/SOCKET |
| VI-J4H-MY-F3 | CONVERTER MOD DC/DC 52V 50W |
| VI-JV2-MY-F1 | CONVERTER MOD DC/DC 15V 50W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC44BC375VAEFR2 | 制造商:Freescale Semiconductor 功能描述: |
| MC44BC380 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:VHF/ UHF ANTENNA BOOSTER/SPLITTER IC |
| MC44BC380EF | 功能描述:IC BOOSTER/SPLITTER ANT 8-SOIC RoHS:是 类别:RF/IF 和 RFID >> RF 功率分配器/分线器 系列:- 标准包装:98 系列:- 插入损耗:- 频率:40MHz ~ 880MHz 技术规格:- 尺寸/尺寸:* 封装/外壳:- 包装:管件 |
| MC44BC380EFR2 | 功能描述:IC BOOSTER/SPLITTER ANT 8-SOIC RoHS:是 类别:RF/IF 和 RFID >> RF 功率分配器/分线器 系列:- 标准包装:98 系列:- 插入损耗:- 频率:40MHz ~ 880MHz 技术规格:- 尺寸/尺寸:* 封装/外壳:- 包装:管件 |
| MC44BS373 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:MC44BS373 |
发布紧急采购，3分钟左右您将得到回复。