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參數(shù)資料
| 型號： | LMX358ASA+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 15/15頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OP AMP LV R-R DUAL 8-SOIC |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 100 |
| 放大器類型： | 通用 |
| 電路數(shù)： | 2 |
| 輸出類型： | 滿擺幅 |
| 轉(zhuǎn)換速率： | 1 V/µs |
| 增益帶寬積： | 1.3MHz |
| 電流 - 輸入偏壓： | 18nA |
| 電壓 - 輸入偏移： | 1000µV |
| 電流 - 電源： | 240µA |
| 電流 - 輸出 / 通道： | 28mA |
| 電壓 - 電源，單路/雙路(±)： | 2.3 V ~ 7 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOIC |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 1385 (CN2011-ZH PDF) |
Detailed Description
Input Protection Circuit
The LMX321/LMX358/LMX324’s inputs are protected
from large differential input voltages by internal 3.5k
series resistors and back-to-back triple diode stacks
across the inputs (Figure 1). For differential input volt-
ages (much less than 1.8V), input resistance is typically
3M. For differential input voltages greater than 1.8V,
input resistance is around 7k, and the input bias cur-
rent can be approximated by the following equation:
IBIAS = (VDIFF - 1.8V) / 7k
In the region where the differential input voltage
approaches 1.8V, input resistance decreases exponen-
tially from 3M to 7k as the diode block begins con-
ducting. Inversely, the bias current increases with the
same curve.
Rail-to-Rail Output Stage
The LMX321/LMX358/LMX324 drive 2k loads and still
typically swing within 40mV of the supply rails. Figure 2
shows the output voltage swing of the LMX321 config-
ured with AVCL = +2V/V.
Driving Capacitive Loads
Driving a capacitive load can cause instability in many
op amps, especially those with low quiescent current.
The LMX321/LMX358/LMX324 are unity-gain stable for
a range of capacitive loads to above 400pF. Figure 4
shows the response of the LMX321 with an excessive
capacitive load. Adding a series resistor between the
output and the load capacitor (Figure 5) improves the
circuit’s response by isolating the load capacitance
from the op amp’s output.
LMX321/LMX358/LMX324
Single/Dual/Quad, General-Purpose,
Low-Voltage, Rail-to-Rail Output Op Amps
_______________________________________________________________________________________
9
3.5k
Figure 1. Input Protection Circuit
200s/div
2.5V
-2.5V
VOUT
1V/div
VIN
2V/div
VCC = 2.5V, VEE = -2.5V, AVCL = 2V/V
Figure 2. Rail-to-Rail Output Swing
RL
CL
LMX321
LMX358
LMX324
Figure 3. Capacitive-Load-Driving Circuit
4s/div
2.6V
2.4V
2.6V
2.4V
VOUT
100mV/div
VIN
100mV/div
VCC = 5V, VEE = 0V, CL = 2.2nF, RL = 2k
Figure 4. Output With Excessive Capacitive Load
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMX358ASA+ | 功能描述:運算放大器 - 運放 Quad GP Low-V Rail-Rail Output RoHS:否 制造商:STMicroelectronics 通道數(shù)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(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| LMX358ASA+T | 功能描述:運算放大器 - 運放 Quad GP Low-V Rail-Rail Output RoHS:否 制造商:STMicroelectronics 通道數(shù)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(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| LMX358ASA-T | 功能描述:運算放大器 - 運放 Quad GP Low-V Rail-Rail Output RoHS:否 制造商:STMicroelectronics 通道數(shù)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(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| LMX358AUA | 功能描述:運算放大器 - 運放 Quad GP Low-V Rail-Rail Output RoHS:否 制造商:STMicroelectronics 通道數(shù)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(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| LMX358AUA+ | 功能描述:運算放大器 - 運放 Quad GP Low-V Rail-Rail Output RoHS:否 制造商:STMicroelectronics 通道數(shù)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(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
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