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| 型号： | MAX9504BEUT+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/16页 |
| 文件大小： | 0K |
| 描述： | IC AMP VIDEO HI CUR SOT23-6 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 应用： | 通用 |
| 电路数： | 1 |
| -3db带宽： | 47MHz |
| 转换速率： | 165 V/µs |
| 电流 - 电源： | 5mA |
| 电流 - 输出 / 通道： | 110mA |
| 电压 - 电源，单路/双路(±)： | 2.7 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-6 |
| 包装： | 标准包装 |
| 其它名称： | MAX9504BEUT+TDKR |
MAX9504A/MAX9504B
3V/5V, 6dB Video Amplifiers with
High Output-Current Capability
10
______________________________________________________________________________________
3rd-Order Butterworth Lowpass Filter Realization
If a flatter passband and more stopband attenuation
are desired, a 3rd-order lowpass filter can be used.
The design procedures are similar to the 2nd-order
Butterworth lowpass filter.
Table 3 shows the normalized 3rd-order Butterworth
lowpass filter with the cutoff frequency at 1 rad/s and
the stopband frequency at 3 rad/s. Table 4 shows the
appropriate L and C values for different source/load
impedances, the bench measurement values for the -3dB
frequency and the attenuation at 27MHz. The attenua-
tion is over 40dB at 27MHz. At 6MHz, the attenuation is
approximately 0.6dB for R1 = R2 = 150 (Figure 6).
Y/C-to-Composite Mixer and Driver Circuit
The Y/C-to-composite mixer and driver use two low-
pass filters, the MAX9504A and the MAX9504B. In
Figure 7, the top video DAC generates a luma signal,
which is filtered through the passive RLC network and
then amplified by the MAX9504B. The bottom video
DAC generates a chroma signal, which is filtered and
then amplified by the MAX9504A.
LUMA OUT is directly connected to the output of the
MAX9504B through a 75 back-termination resistor;
likewise, CHROMA OUT to the output of the MAX9504A.
CVBS OUT (the composite video with blanking and
sync output) is created by AC-coupling the chroma sig-
nal to the luma signal through the 470pF capacitor,
which looks like an AC short at the color subcarrier fre-
quency of 3.58MHz for NTSC or 4.43MHz for PAL.
This circuit relies upon the feature that the MAX9504A/
MAX9504B can drive two loads at the same time.
Table 4. Bench Measurement Values—3rd Order LPF
R1 = R2 (
)
C1 (pF)
C2 (pF)
C3 (pF)
L (H)
3dB FREQUENCY (MHz)
ATTENUATION AT 27MHz (dB)
75
220
15.0
2.2
9.3
43
150
120
6.8
4.7
8.9
50
300
56
3.3
10.0
9.0
45
Table 3. 3rd-Order Butterworth Lowpass
Filter Normalized Values
Rn1 = Rn2
(
)
Cn1 (F)
Cn2 (F)
Cn3 (F)
Ln1 (H)
1
0.923
0.06
1.846
VOUT
1V/div
10s/div
VIN
500mV/div
Figure 5. Multiburst Response
0.1
1
10
100
FREQUENCY RESPONSE
FREQUENCY (MHz)
GAIN
(dB)
0
-60
-50
-40
-30
-20
-10
Figure 6. Frequency Response for 3rd-Order Lowpass Filter
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9505EEE | 功能描述:视频放大器 RoHS:否 制造商:ON Semiconductor 通道数量:4 电源类型: 工作电源电压:3.3 V, 5 V 电源电流: 最小工作温度: 最大工作温度: 封装 / 箱体:TSSOP-14 封装:Reel |
| MAX9505EEE+ | 功能描述:视频放大器 DirectDrive Video Amplifier RoHS:否 制造商:ON Semiconductor 通道数量:4 电源类型: 工作电源电压:3.3 V, 5 V 电源电流: 最小工作温度: 最大工作温度: 封装 / 箱体:TSSOP-14 封装:Reel |
| MAX9505EEE+T | 功能描述:视频放大器 DirectDrive Video Amplifier RoHS:否 制造商:ON Semiconductor 通道数量:4 电源类型: 工作电源电压:3.3 V, 5 V 电源电流: 最小工作温度: 最大工作温度: 封装 / 箱体:TSSOP-14 封装:Reel |
| MAX9505EEE-T | 功能描述:视频放大器 RoHS:否 制造商:ON Semiconductor 通道数量:4 电源类型: 工作电源电压:3.3 V, 5 V 电源电流: 最小工作温度: 最大工作温度: 封装 / 箱体:TSSOP-14 封装:Reel |
| MAX9505ETE | 功能描述:视频放大器 RoHS:否 制造商:ON Semiconductor 通道数量:4 电源类型: 工作电源电压:3.3 V, 5 V 电源电流: 最小工作温度: 最大工作温度: 封装 / 箱体:TSSOP-14 封装:Reel |
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