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| 型号： | MAX4490AUK+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/8页 |
| 文件大小： | 0K |
| 描述： | IC OP AMP SGL RRIO SOT23-5 |
| 其它有关文件： | Automotive Product Guide |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 放大器类型： | 通用 |
| 电路数： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 10 V/µs |
| 增益带宽积： | 10MHz |
| 电流 - 输入偏压： | 50pA |
| 电压 - 输入偏移： | 1500µV |
| 电流 - 电源： | 800µA |
| 电流 - 输出 / 通道： | 50mA |
| 电压 - 电源，单路/双路(±)： | 2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-23-5 |
| 包装： | 标准包装 |
| 产品目录页面： | 1390 (CN2011-ZH PDF) |
| 其它名称： | MAX4490AUK+TDKR |
Driving Capacitive Loads
In conjunction with op amp output resistance, capaci-
tive loads introduce a pole frequency that can reduce
phase margin and lead to unstable operation. The
MAX4490/MAX4491/MAX4492 drive capacitive loads
up to 300pF without significant degradation of step
response and slew rate (Figure 4). Capacitive-Load
Stability (page 1) shows regions of stable and margin-
ally stable (step overshoot <10%) operation for different
combinations of capacitive and resistive loads.
Improve stability for large capacitive loads by adding
an isolation resistor (typically 10
) in series with the
output (Figure 5). Note that the isolation resistor forms a
voltage divider with potential for gain error.
Chip Information
MAX4490 TRANSISTOR COUNT: 60
MAX4491 TRANSISTOR COUNT: 120
MAX4492 TRANSISTOR COUNT: 240
SUBSTRATE CONNECTED TO VSS
MAX4490/MAX4491/MAX4492
Low-Cost, High-Slew-Rate,
Rail-to-Rail I/O Op Amps in SC70
_______________________________________________________________________________________
7
Figure 4. Step Response With and Without Capacitive Loading
AV = +1, RL = 100k
, CL = 0
4a)
4b)
WITHOUT CAPACITIVE LOADING
WITH CAPACITIVE LOADING
AV = +1, RL = 100k
, CL = 300pF
Figure 3. Step Response With and Without Feedback
Compensation
AV = -1, RL = 4k
, Cf = 0
3a)
3b)
WITHOUT FEEDBACK COMPENSATION
WITH FEEDBACK COMPENSATION
AV = -1, RL = 4k
, Cf = 5pF
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4490AXK | 制造商:Maxim Integrated Products 功能描述:NON BOOK, NEED N/NR, QUOTE# - Cut Tape Product |
| MAX4490AXK+ | 制造商:Maxim Integrated Products 功能描述:OP AMP SGL GP R-R I/O 2.75V/5.5V 5PIN SC-70 - Rail/Tube |
| MAX4490AXK+T | 功能描述:运算放大器 - 运放 High-Slew-Rate 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 |
| MAX4490AXK-T | 功能描述:运算放大器 - 运放 High-Slew-Rate 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 |
| MAX4491AKA | 制造商:Maxim Integrated Products 功能描述:8 PIN COUNT SOT PACKAGE TYPE - Bulk |
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