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| 型号： | LMC6484IMX/NOPB |
| 厂商： | National Semiconductor |
| 文件页数： | 7/24页 |
| 文件大小： | 0K |
| 描述： | IC OP AMP QUAD CMOS R-R 14-SOIC |
| 标准包装： | 2,500 |
| 放大器类型： | 通用 |
| 电路数： | 4 |
| 输出类型： | 满摆幅 |
| 转换速率： | 1.3 V/µs |
| 增益带宽积： | 1.5MHz |
| 电流 - 输入偏压： | 0.02pA |
| 电压 - 输入偏移： | 110µV |
| 电流 - 电源： | 2.6mA |
| 电流 - 输出 / 通道： | 30mA |
| 电压 - 电源，单路/双路(±)： | 3 V ~ 15.5 V，±1.5 V ~ 7.75 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 14-SOICN |
| 包装： | 带卷 (TR) |
| 产品目录页面： | 1266 (CN2011-ZH PDF) |
| 其它名称： | *LMC6484IMX LMC6484IMX LMC6484IMXTR |
Application Information (Continued)
7.0 Offset Voltage Adjustment
Offset voltage adjustment circuits are illustrated in
Figures
13, 14. Large value resistances and potentiometers are used
to reduce power consumption while providing typically ±2.5
mV of adjustment range, referred to the input, for both
configurations with V
S = ±5V.
8.0 Upgrading Applications
The LMC6484 quads and LMC6482 duals have industry
standard pin outs to retrofit existing applications. System
performance can be greatly increased by the LMC6484’s
features. The key benefit of designing in the LMC6484 is
increased linear signal range. Most op-amps have limited
input common mode ranges. Signals that exceed this range
generate a non-linear output response that persists long
after the input signal returns to the common mode range.
Linear signal range is vital in applications such as filters
where signal peaking can exceed input common mode
ranges resulting in output phase inversion or severe distor-
tion.
9.0 Data Acquisition Systems
Low power, single supply data acquisition system solutions
are provided by buffering the ADC12038 with the LMC6484
(
Figure 14). Capable of using the full supply range, the
LMC6484 does not require input signals to be scaled down
to meet limited common mode voltage ranges. The
LMC6484 CMRR of 82 dB maintains integral linearity of a
12-bit data acquisition system to ±0.325 LSB. Other
rail-to-rail input amplifiers with only 50 dB of CMRR will
degrade the accuracy of the data acquisition system to only
8 bits.
DS011714-25
FIGURE 12. Inverting Configuration
Offset Voltage Adjustment
DS011714-26
FIGURE 13. Non-Inverting Configuration
Offset Voltage Adjustment
LMC6484
www.national.com
14
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LMC6484IN | 功能描述:运算放大器 - 运放 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 |
| LMC6484IN | 制造商:Texas Instruments 功能描述:IC OP AMP QUAD CMOS 6484 DIP14 |
| LMC6484IN/NOPB | 功能描述:运算放大器 - 运放 CMOS Quad R/R I/O Op Amp 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 |
| LMC6484MN | 制造商:NSC 制造商全称:National Semiconductor 功能描述:CMOS Quad Rail-to-Rail Input and Output Operational Amplifier |
| LMC6484N | 制造商:未知厂家 制造商全称:未知厂家 功能描述:CMOS Quad Rail-to-Rail Input and Output Operational Amplifier(970.84 k) |
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