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參數(shù)資料
| 型號(hào)： | 5962-9453402QXA |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 運(yùn)算放大器 |
| 英文描述： | QUAD OP-AMP, 1.35 uV OFFSET-MAX, 1.15 MHz BAND WIDTH, CDSO14 |
| 封裝： | CERAMIC, SOIC-14 |
| 文件頁數(shù)： | 7/26頁 |
| 文件大?。?/td> | 3044K |
| 代理商： | 5962-9453402QXA |
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20160812
FIGURE 2. A ±7.5V Input Signal Greatly Exceeds the 3V
Supply in Figure 3 Causing No Phase Inversion Due to
R
I
Applications that exceed this rating must externally limit the
maximum input current to ±5 mA with an input resistor as
shown in Figure 3.
20160811
FIGURE 3. R
I Input Current Protection for Voltages
Exceeding the Supply Voltage
3.0 RAIL-TO-RAIL OUTPUT
The approximated output resistance of the LMC6484 is
180
Ω sourcing and 130Ω sinking at V
S = 3V and 110Ω sourc-
ing and 83
Ω sinking at V
S = 5V. Using the calculated output
resistance, maximum output voltage swing can be estimated
as a function of load.
4.0 CAPACITIVE LOAD TOLERANCE
The LMC6484 can typically directly drive a 100 pF load with
V
S = 15V at unity gain without oscillating. The unity gain fol-
lower is the most sensitive configuration. Direct capacitive
loading reduces the phase margin of op-amps. The combi-
nation of the op-amp's output impedance and the capacitive
load induces phase lag. This results in either an under-
damped pulse response or oscillation.
Capacitive load compensation can be accomplished using
resistive isolation as shown in Figure 4. This simple technique
is useful for isolating the capacitive input of multiplexers and
A/D converters.
20160817
FIGURE 4. Resistive Isolation of a 330 pF Capacitive Load
20160818
FIGURE 5. Pulse Response of the LMC6484 Circuit in
Improved frequency response is achieved by indirectly driving
capacitive loads as shown in Figure 6.
20160815
FIGURE 6. LMC6484 Non-Inverting Amplifier,
Compensated to Handle a 330 pF Capacitive Load
R1 and C1 serve to counteract the loss of phase margin by
feeding forward the high frequency component of the output
signal back to the amplifier's inverting input, thereby preserv-
ing phase margin in the overall feedback loop. The values of
R1 and C1 are experimentally determined for the desired
pulse response. The resulting pulse response can be seen in
15
www.national.com
LMC6484QML
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| 5962-9453402MCX | QUAD OP-AMP, 3000 uV OFFSET-MAX, 1 MHz BAND WIDTH, CDIP14 |
| 5962-9458101M2X | QUAD OP-AMP, 4000 uV OFFSET-MAX, 4 MHz BAND WIDTH, CQCC20 |
| 5962-9458101MCX | QUAD OP-AMP, 4000 uV OFFSET-MAX, 4 MHz BAND WIDTH, CDIP14 |
| 5962-9459301MPX | OP-AMP, 9000 uV OFFSET-MAX, CDIP8 |
| 5962-9460301MCA | OP-AMP, 4000 uV OFFSET-MAX, CDIP14 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 5962-9454001MPA | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 Fixed 5V CMOS Step Up Switching Reg RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| 5962-9455301M2A | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Intersil Corporation 功能描述:OP Amp Quad GP 20-Pin CLCC |
| 5962-9455501M3A | 制造商:Texas Instruments 功能描述:Soft Sw PWM Cntrlr 4-OUT PH SHIFT RES 1MHz 28-Pin LCCC Tube 制造商:Texas Instruments 功能描述:SOFT SW PWM CNTRLR QUAD-OUT PH SHIFT RES 1MHZ 28LCCC - Rail/Tube |
| 5962-9455501MRA | 制造商:Texas Instruments 功能描述:Soft Sw PWM Cntrlr 4-OUT PH SHIFT RES 1MHz 20-Pin CDIP Tube 制造商:Texas Instruments 功能描述:SOFT SW PWM CNTRLR 4-OUT PH SHIFT RES 1MHZ 20CDIP - Rail/Tube |
| 5962-9455501VRA | 功能描述:軟開關(guān) PWM 控制器 Phase Shift Res Controller RoHS:否 制造商:Fairchild Semiconductor 輸出端數(shù)量: 輸出電流: 開關(guān)頻率: 工作電源電壓:30 V 電源電流: 最大工作溫度:+ 105 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
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