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參數資料
| 型號： | LMC6484 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | CMOS Quad Rail-to-Rail Input and Output Operational Amplifier |
| 中文描述： | 的CMOS四軌到軌輸入和輸出運算放大器 |
| 文件頁數： | 15/22頁 |
| 文件大小： | 973K |
| 代理商： | LMC6484 |
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 con-
figurations 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 in-
creased linear signal range. Most op-amps have limited in-
put common mode ranges. Signals that exceed this range
generate a non-linear output response that persists long af-
ter 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 de-
grade 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
www.national.com
15
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LMC6484AIM | 功能描述:運算放大器 - 運放 RoHS:否 制造商:STMicroelectronics 通道數量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| LMC6484AIM | 制造商:Texas Instruments 功能描述:IC OP AMP QUAD CMOS 6484 SOIC14 |
| LMC6484AIM/NOPB | 功能描述:運算放大器 - 運放 CMOS QUAD RRIO OP AMP RoHS:否 制造商:STMicroelectronics 通道數量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| LMC6484AIM/NOPB | 制造商:Texas Instruments 功能描述:Operational Amplifier (Op-Amp) IC |
| LMC6484AIMX | 功能描述:運算放大器 - 運放 RoHS:否 制造商:STMicroelectronics 通道數量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
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