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參數(shù)資料
| 型號(hào)： | LM359M |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Dual, High Speed, Programmable, Current Mode Norton Amplifiers |
| 中文描述： | DUAL OP-AMP, 30 MHz BAND WIDTH, PDSO14 |
| 封裝： | PLASTIC, SOP-14 |
| 文件頁數(shù)： | 8/24頁 |
| 文件大?。?/td> | 742K |
| 代理商： | LM359M |
Application Hints
(Continued)
The following figures illustrate typical biasing schemes for
AC amplifiers using the LM359:
The nV
biasing configuration is most useful for low noise
applications where a reduced input impedance can be ac-
commodated (see typical applications section).
OPERATING CURRENT PROGRAMMABILITY (I
SET
)
The input bias current, slew rate, gain bandwidth product,
output drive capability and total device power consumption
of both amplifiers can be simultaneously controlled and opti-
mized via the two programming pins I
SET(OUT)
and I
SET(IN)
.
I
SET(OUT)
The output set current (I
) is equal to the amount of
current sourced from pin 1 and establishes the class A bias-
ing current for the Darlington emitter follower output stage.
Using a single resistor from pin 1 to ground, as shown in Fig-
ure 6 this current is equal to:
The output set current can be adjusted to optimize the
amount of current the output of the amplifier can sink to drive
load capacitance and for loads connected to V
+
. The maxi-
mum output sinking current is approximately 10 times
I
. This set current is best used to reduce the total
device supply current if the amplifiers are not required to
drive small load impedances.
I
SET(IN)
The input set current I
is equal to the current flowing
into pin 8. A resistor from pin 8 to V
+
sets this current to be:
I
is most significant in controlling the AC characteris-
tics of the LM359 as it directly sets the total input stage cur-
rent of the amplifiers which determines the maximum slew
rate, the frequency of the open loop dominant pole, the input
resistance of the () input and the biasing current I
b
(). All of
DS007788-8
FIGURE 3. Biasing an Inverting AC Amplifier
DS007788-9
FIGURE 4. Biasing a Non-Inverting AC Amplifier
DS007788-10
FIGURE 5. nV
BE
Biasing
DS007788-11
FIGURE 6. Establishing the Output Set Current
DS007788-12
FIGURE 7. Establishing the Input Set Current
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM359M/NOPB | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| LM359MX | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| LM359MX/NOPB | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| LM359N | 制造商:Panasonic Industrial Company 功能描述:IC 制造商:OC White Company 功能描述:SP Amp DIFF AMP Dual 22V 14-Pin PDIP Rail |
| LM359N | 制造商:Texas Instruments 功能描述:IC AMP DUAL NORTON DIP14 359 |
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