參數(shù)資料
型號(hào): LM258DR2
廠(chǎng)商: ON Semiconductor
文件頁(yè)數(shù): 11/14頁(yè)
文件大?。?/td> 0K
描述: IC OPAMP DUAL LOW POWER 8SOIC
產(chǎn)品變化通告: Product Obsolescence 14/Apr/2010
標(biāo)準(zhǔn)包裝: 1
放大器類(lèi)型: 通用
電路數(shù): 2
轉(zhuǎn)換速率: 0.6 V/µs
增益帶寬積: 1MHz
電流 - 輸入偏壓: 45nA
電壓 - 輸入偏移: 2000µV
電流 - 電源: 1.5mA
電流 - 輸出 / 通道: 40mA
電壓 - 電源,單路/雙路(±): 3 V ~ 32 V,±1.5 V ~ 16 V
工作溫度: -25°C ~ 85°C
安裝類(lèi)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-SOICN
包裝: 剪切帶 (CT)
其它名稱(chēng): LM258DR2OSCT
LM258, LM358, LM358A, LM2904, LM2904A, LM2904V, NCV2904, NCV2904V
http://onsemi.com
6
CIRCUIT DESCRIPTION
The LM358 series is made using two internally
compensated, twostage 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 singleended converter. The
second stage consists of a standard current source load
amplifier stage.
Each amplifier is biased from an internalvoltage
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
ms/DIV
1.0
V/DIV
VCC = 15 Vdc
RL = 2.0 kW
TA = 25°C
A
VOL
,OPEN
LOOP
VOL
TAGE
GAIN
(dB)
V
,INPUT
VOL
TAGE
(V)
I
Figure 4. Input Voltage Range
Figure 5. LargeSignal 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
12
14
16
18
20
VCC/VEE, 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
VCC = 15 V
VEE = Gnd
TA = 25°C
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