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參數(shù)資料
| 型號： | MAX4321 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Cost, Low-Voltage, Rail-to-Rail, Input/Output, SOT23 5MHz Op Amp |
| 中文描述： | 低成本、低電壓、滿擺幅輸入/輸出、SOT23封裝5MHz運算放大器 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 259K |
| 代理商： | MAX4321 |
M
Low-Cost, Low-Voltage, Rail-to-Rail,
Input/Output, SOT23 5MHz Op Amp
8
_______________________________________________________________________________________
Rail-to-Rail Output Stage
The minimum output voltage will be within millivolts of
ground for single-supply operation where the load is
referenced to ground (V
EE
). Figure 3 shows the input
voltage range and output voltage swing of a MAX4321
connected as a voltage follower. With a +3V supply
and the 100k
load tied to ground, the output swings
from 0.02V to 2.97V. The maximum output voltage
swing depends on the load but will be within 300mV of
a +5V supply, even with the maximum load (250
to
ground).
Driving a capacitive load can cause instability in most
high-speed op amps, especially those with low quies-
cent current. The MAX4321 has a high tolerance for
capacitive loads. It is stable with capacitive loads up to
500pF. Figure 4 gives the stable operating region for
capacitive loads. Figures 5 and 6 show the response
with capacitive loads and the results of adding an isola-
tion resistor in series with the output (Figure 7). The
resistor improves the circuit
’
s phase margin by isolating
the load capacitor from the op amp
’
s output.
Figure 3. Rail-to-Rail Input /Output Voltage Range
Figure 4. Capacitive-Load Stability
Figure 5. Small-Signal Transient Response with Capacitive
Load
Figure 6. Transient Response to Capacitive Load with Isolation
Resistor
IN
400ns/div
V
5
OUT
A
V
= +1
C
L
= 500pF
IN
400ns/div
V
5
OUT
A
V
= +1
C
L
= 1000pF
R
S
= 39
IN
2
μ
s/div
V
1
OUT
V
CC
= 3V
A
V
= +1
R
L
= 100k
10,000
100
100
1k
RESISTIVE LOAD (
)
100k
10k
L
1000
UNSTABLE
REGION
R
L
TO V
EE
V
OUT
= V
CC
/ 2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4321EUK | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
| MAX4321EUK+ | 制造商:Maxim Integrated Products 功能描述:OP AMP SGL GP R-R I/O 3.25V/6.5V 5PIN SOT-23 - Rail/Tube |
| MAX4321EUK+T | 功能描述:運算放大器 - 運放 Rail-Rail Input/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(fēng)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 |
| MAX4321EUK-T | 功能描述:運算放大器 - 運放 Rail-Rail Input/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(fēng)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 |
| MAX4322ESA | 功能描述:運算放大器 - 運放 Low-Power Rail-Rail I/O 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(fēng)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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