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参数资料
| 型号： | MAX4090EXT+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 17/17页 |
| 文件大小： | 0K |
| 描述： | IC VIDEO BUFFER 6DB SC70-6 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 应用： | 缓冲器 |
| 电路数： | 1 |
| -3db带宽： | 55MHz |
| 转换速率： | 275 V/µs |
| 电流 - 电源： | 6.5mA |
| 电流 - 输出 / 通道： | 85mA |
| 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： | 6-TSSOP，SC-88，SOT-363 |
| 供应商设备封装： | SC-70-6 |
| 包装： | 标准包装 |
| 其它名称： | MAX4090EXT+TDKR |
MAX4090
3V/5V, 6dB Video Buffer with Sync-Tip Clamp
and 150nA Shutdown Current
_______________________________________________________________________________________
9
R1 = R2
(
Ω)
C1
(pf)
L1
(H)
RIS
(
Ω)
3dB
BW
(MHz)
ATTENUATION
AT 27MHz
(dB)
75
330
1.8
0
8.7
20
150
3.9
50
9.0
20
200
120
4.7
50
9.3
22
300
82
8.2
100
8.7
20
Table 2. Bench Measurement Values
Rn1 = Rn2
(
Ω)
Cn1 (F)
Cn2 (F)
Cn3 (F)
Ln1 (H)
1
0.923
0.06
1.846
Table 3. 3rd-Order Butterworth Lowpass
Filter Normalized Values
R2
150
Ω
R1
150
Ω
C1
120pF
C2
120pF
L1
4.7
μH
C3
6.8pF
C4
0.1
μF
R3
75
Ω
C7
1
μF
IN
OUT
GND
FB
SHDN
VCC
VOUT
VIDEO
CURRENT
DAC
RIS
49.9
Ω
3-POLE RECONSTRUCTION LPF
MAX4090
Figure 4. 3rd-Order Butterworth LPF with MAX4090
R1 = R2 (
Ω)
C1 (pF)
C2 (pF)
C3 (pF)
L (H)
RIS (
Ω)
3dB BW (MHz)
ATTENUATION AT
27MHz (dB)
75
220
15.0
2.2
0
9.3
43
150
120
6.8
4.7
50
8.9
50
300
56
3.3
10.0
100
9.0
45
Table 4. Bench Measurement Values
Sag Correction
In a 5V application, the MAX4090 can use the sag con-
figuration if an AC-coupled output video signal is
required. Sag correction refers to the low-frequency
compensation for the highpass filter formed by the
150
Ω load and the output capacitor. In video applica-
tions, the cutoff frequency must be low enough to pass
the vertical sync interval to avoid field tilt. This cutoff
frequency should be less than 5Hz, and the coupling
capacitor must be very large in normal configuration,
typically > 220F. In sag configuration, the MAX4090
eliminates the need for large coupling capacitors, and
instead requires two 22F capacitors (Figure 6) to
reach the same performance as the large capacitor.
Bench experiments show that increasing the output
coupling capacitor C5 beyond 47F does not improve
the performance. If the supply voltage is less than 4.5V,
the sag correction is not recommended for the
MAX4090.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4091 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Single/Dual/Quad, Micropower, Single-Supply, Rail-to-Rail Op Amps |
| MAX4091ASA | 功能描述:运算放大器 - 运放 Single uPower Single Supply Rail-Rail RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| MAX4091ASA+ | 功能描述:运算放大器 - 运放 Single uPower Single Supply Rail-Rail RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| MAX4091ASA+T | 功能描述:运算放大器 - 运放 Single uPower Single Supply Rail-Rail RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| MAX4091ASA-T | 功能描述:运算放大器 - 运放 Single uPower Single Supply Rail-Rail RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
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