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參數資料
| 型號： | OP482GS |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 運動控制電子 |
| 英文描述： | Dual/Quad Low Power, High Speed JFET Operational Amplifiers |
| 中文描述： | QUAD OP-AMP, 6000 uV OFFSET-MAX, 4 MHz BAND WIDTH, PDSO14 |
| 封裝： | MS-012AB, NSOIC-14 |
| 文件頁數： | 4/12頁 |
| 文件大小： | 260K |
| 代理商： | OP482GS |
OP282/OP482
REV. B
–4–
APPLICAT IONS INFORMAT ION
T he OP282 and OP482 are single and dual JFET op amps that
have been optimized for high speed at low power. T his
combination makes these amplifiers excellent choices for battery
powered or low power applications requiring above average
performance. Applications benefiting from this performance
combination include telecom, geophysical exploration, portable
medical equipment and navigational instrumentation.
HIGH SIDE SIGNAL CONDIT IONING
T here are many applications that require the sensing of signals
near the positive rail. OP282s and OP482s have been tested and
guaranteed over a common-mode range (–11 V
≤
V
CM
≤
+15 V)
that includes the positive supply.
One application where this is commonly used is in the sensing of
power supply currents. T his enables it to be used in current
sensing applications such as the partial circuit shown in Figure
1. In this circuit, the voltage drop across a low value resistor,
such as the 0.1
shown here, is amplified and compared to 7.5
volts. T he output can then be used for current limiting.
+15V
100k
100k
100k
500k
0.1
1/2
OP282
+
R
L
Figure 1. Phase Inversion
PHASE INVE RSION
Most JFET -input amplifiers will invert the phase of the input
signal if either input exceeds the input common-mode range.
For the OP282 and OP482 negative signals in excess of approxi-
mately 14 volts will cause phase inversion. T he cause of this
effect is saturation of the input stage leading to the forward-
biasing of a drain-gate diode. A simple fix for this in noninverting
applications is to place a resistor in series with the noninverting
input. T his limits the amount of current through the forward-
biased diode and prevents the shutting down of the output
stage. For the OP282/OP482, a value of 200 k
has been found
to work. However, this adds a significant amount of noise.
-15
15
10
5
0
-5
-10
-15
-10
-5
0
5
10
15
V
I
OUT
V
Figure 2. OP282 Phase Reversal
ACT IVE FILT E RS
T he OP282 and OP482’s wide bandwidth and high slew rates
make either an excellent choice for many filter applications.
T here are many types of active filter configurations, but the four
most popular configurations are Butterworth, elliptical, Bessel,
and Chebyshev. Each type has a response that is optimized for a
given characteristic as shown in T able I.
PROGRAMMABLE ST AT E -VARIABLE FILT E R
T able I.
Amplitude
(Pass Band)
Amplitude
(Stop Band)
T ype
Selectivity
Overshoot
Phase
Butterworth
Chebyshev
Elliptical
Bessel (T hompson)
Moderate
Good
Best
Poor
Good
Moderate
Poor
Best
Max Flat
Equal Ripple
Equal Ripple
Nonlinear
Equal Ripple
Linear
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相關代理商/技術參數 |
參數描述 |
|---|---|
| OP482GS-REEL | 功能描述:IC OPAMP JFET 4MHZ QUAD 14SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- 放大器類型:電流檢測 電路數:1 輸出類型:- 轉換速率:- 增益帶寬積:125kHz -3db帶寬:- 電流 - 輸入偏壓:- 電壓 - 輸入偏移:100µV 電流 - 電源:1.1µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:4-WFBGA，CSPBGA 供應商設備封裝:4-UCSP（2x2） 包裝:剪切帶 (CT) 其它名稱:MAX9634WERS+TCT |
| OP482GS-REEL7 | 功能描述:IC OPAMP JFET 4MHZ QUAD 14SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:100 系列:- 放大器類型:通用 電路數:1 輸出類型:- 轉換速率:0.2 V/µs 增益帶寬積:- -3db帶寬:- 電流 - 輸入偏壓:100pA 電壓 - 輸入偏移:30µV 電流 - 電源:380µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):±2 V ~ 18 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:8-SO 包裝:管件 |
| OP482GSZ | 功能描述:IC OPAMP JFET 4MHZ QUAD 14SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:50 系列:- 放大器類型:J-FET 電路數:2 輸出類型:- 轉換速率:13 V/µs 增益帶寬積:3MHz -3db帶寬:- 電流 - 輸入偏壓:65pA 電壓 - 輸入偏移:3000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作溫度:-40°C ~ 85°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應商設備封裝:8-PDIP 包裝:管件 |
| OP482GSZ | 制造商:Analog Devices 功能描述:Operational Amplifier (Op-Amp) IC |
| OP482GSZ-REEL | 功能描述:IC OPAMP JFET 4MHZ QUAD 14SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:50 系列:LinCMOS™ 放大器類型:通用 電路數:4 輸出類型:- 轉換速率:0.05 V/µs 增益帶寬積:110kHz -3db帶寬:- 電流 - 輸入偏壓:0.7pA 電壓 - 輸入偏移:210µV 電流 - 電源:57µA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):3 V ~ 16 V，±1.5 V ~ 8 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:14-SOIC 包裝:管件 產品目錄頁面:865 (CN2011-ZH PDF) 其它名稱:296-1834296-1834-5 |
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