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參數(shù)資料
| 型號： | LM258 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Single supply dual operational amplifiers(低功耗雙運(yùn)算放大器) |
| 中文描述： | 單電源雙運(yùn)算放大器（低功耗雙運(yùn)算放大器） |
| 文件頁數(shù)： | 6/14頁 |
| 文件大小： | 234K |
| 代理商： | LM258 |
LM258, LM358, LM358A, LM2904, LM2904A, LM2904V, NCV2904
http://onsemi.com
6
CIRCUIT DESCRIPTION
The LM358 series is made using two internally
compensated, two
stage operational amplifiers. The first
stage of each consists of differential input devices Q20 and
Q18 with input buffer transistors Q21 and Q17 and the
differential to single ended converter Q3 and Q4. The first
stage performs not only the first stage gain function but also
performs the level shifting and transconductance reduction
functions. By reducing the transconductance, a smaller
compensation capacitor (only 5.0 pF) can be employed, thus
saving chip area. The transconductance reduction is
accomplished by splitting the collectors of Q20 and Q18.
Another feature of this input stage is that the input common
mode range can include the negative supply or ground, in
single supply operation, without saturating either the input
devices or the differential to single
ended converter. The
second stage consists of a standard current source load
amplifier stage.
Each amplifier is biased from an internal
voltage
regulator which has a low temperature coefficient thus
giving each amplifier good temperature characteristics as
well as excellent power supply rejection.
Figure 3. Large Signal Voltage
Follower Response
5.0 s/DIV
1
V
CC
= 15 Vdc
R
L
= 2.0 k
T
A
= 25
°
C
A
V
I
Figure 4. Input Voltage Range
Figure 5. Large
Signal Open Loop Voltage Gain
18
16
14
12
10
8.0
6.0
4.0
2.0
0
20
0
2.0
4.0
6.0
8.0
10
14
16
18
20
V
CC
/V
EE,
POWER SUPPLY VOLTAGES (V)
120
100
80
60
40
20
0
20
1.0
10
100
1.0 k
10 k
100 k
1.0 M
f, FREQUENCY (Hz)
Negative
Positive
V
CC
= 15 V
V
EE
= Gnd
T
A
= 25
°
C
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2581 | 制造商:NEC 功能描述:258 NEC'90 SMT TUBES N9F8A |
| LM258-1 | 制造商:NEC 功能描述:258 NEC'90 SMT TUBES N9F8A |
| LM2585S-12 | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| LM2585S-12/NOPB | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| LM2585S-3.3 | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
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