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参数资料
| 型号： | MC44BC375UEFR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 17/20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 |
MC44BC375/U/J/T Technical Data
Pin Selection
7 Pin Selection
By default (open condition), all pins are “HI”.
7.1 Test Modes
NOTE:
Test modes are intended for manufacturing test purpose only and not to be
be used for normal application.
8 High Frequency Characteristics (U Version)
For all the following specifications and unless otherwise stated: Vcc = 5.0V, T amb. = 25°C.Video input
1Vp-p, 10 step greyscale.RF inputs / outputs into 75
load.SPECIFICATIONS ONLY VALID FOR
ENVELOPE DEMODULATION. Measured on U version on both channel 3 and 4. See Section 11,
“Characterization Measurement Conditions” on page 7 for “C” type parameters.
Pin Nb
Pin Name
Device
LO (grounded)
HI (Open or +5V)
1
CHS
MC44BC375U
MC44BC375J
MC44BC375T
CH4
CH2
CH13
CH3
CH1
CH13
2
PSS
MC44BC375U/J/T
14dB
16dB
9
PSave/LO
MC44BC375U/J/T
Power save Mode
LOP pin LO (Low voltage)
Normal Operation
LOP pin HI (High impedance
16
SFS
MC44BC375U/J/T
5.5Mhz
4.5Mhz
Pin
DC level
Description
CHS
Vcc + 0.3V
Vcc + 1.1V
Low frequency testing (RF frequency divided by 4 for MC44BC375U/J, and
divided by 8 for MC44BC375T)
Base band test mode (DC drive applied to modulators)
PSS
Vcc + 1Vbe
Transient Output Inhibit Disabled
SFS
Vcc + 1Vbe
Sound Oscillator OFF
VIDEO
Vcc + 0.3V
Vcc + 1.1V
Force UHF and Sound PLL Upper current source
Force UHF and Sound PLL Lower current source
Parameter
Test Conditions
Min
Typ
Max
Unit
Type
TV OUT output level
74
76
79
dBV
B
Sound subcarrier Harmonics (fp+n*fs)
Ref Picture carrier
-
-73
-65
dBc
C
Second Harmonic of chroma subcarrier.
Using red EBU bar
-
-65
-55
dBc
C
Chroma/Sound intermodulation: fp + (fsnd-fchr) Using red EBU bar
-
-65
-60
dBc
C
Fo (picture carrier) Harmonics (See Note1)
2nd harmonic
3rd harmonic
30
66
42
69
dBV
C
Out Band (picture carrier) Spurious
1/2*Fo - 1/4*Fo - 3/2*Fo - 3/4*Fo
27
dBV
C
In band spurious (Fo +/- 5 MHz range)
No video or sound modulation
-70
-62
dBc
C
4 MHz Crystal Spurious (Fo +/- 4 MHz)
No video or sound modulation
-82
-75
dBc
C
Note:
1: Picture carrier harmonics are highly dependant on PCB layout and decoupling capacitors.
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