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參數(shù)資料
| 型號： | OP467GSZ-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 6/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP GP 28MHZ QUAD 16SOIC |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 放大器類型： | 通用 |
| 電路數(shù)： | 4 |
| 轉(zhuǎn)換速率： | 350 V/µs |
| 增益帶寬積： | 28MHz |
| 電流 - 輸入偏壓： | 150nA |
| 電壓 - 輸入偏移： | 200µV |
| 電流 - 電源： | 8mA |
| 電壓 - 電源，單路/雙路(±)： | ±4.5 V ~ 18 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SOIC W |
| 包裝： | 帶卷 (TR) |
OP467
Rev. | Page 14 of 20
Outputs of high speed amplifiers are very sensitive to capacitive
loads. A capacitive load introduces a pair of pole and zero to the
frequency response of the circuit, reducing the phase margin,
leading to unstable operation or oscillation.
Generally, it is good design practice to isolate the output of the
amplifier from any capacitive load by placing a resistor between
the output of the amplifier and the rest of the circuits. A series
resistor of 10 Ω to 100 Ω is normally sufficient to isolate the
output from a capacitive load.
The OP467 is internally compensated to provide stable
operation and is capable of driving large capacitive loads
without oscillation.
Sockets are not recommended because they increase the lead
inductance/capacitance and reduce the power dissipation of the
package by increasing the thermal resistance of the leads. If
sockets must be used, use Teflon or pin sockets with the shortest
possible leads.
PHASE REVERSAL
The OP467 is immune to phase reversal; its inputs can exceed
the supply rails by a diode drop without any phase reversal.
00
30
2-
04
1
INTPUT
OUTPUT
15.8V
ΔV1
200s
10V
100
90
10
0%
Figure 41. No Phase Reversal (AV = +1)
SATURATION RECOVERY TIME
The OP467 has a fast and symmetrical recovery time from
either rail. This feature is very useful in applications such as
high speed instrumentation and measurement circuits, where
the amplifier is frequently exposed to large signals that overload
the amplifier.
00
30
2-
04
2
DLY 9.824s
20ns
5V
100
90
10
0%
Figure 42. Saturation Recovery Time, Positive Rail
00
30
2-
04
3
DLY 4.806s
20ns
5V
100
90
10
0%
Figure 43. Saturation Recovery Time, Negative Rail
HIGH SPEED INSTRUMENTATION AMPLIFIER
The OP467 performance lends itself to a variety of high speed
applications, including high speed precision instrumentation
amplifiers. Figure 44 represents a circuit commonly used for
data acquisition, CCD imaging, and other high speed
applications.
The circuit gain is set by RG. A 2 kΩ resistor sets the circuit gain
to 2; for unity gain, remove RG. For any other gain settings, use
the following formula
G = 2/RG (Resistor Value is in kΩ)
RC is used for adjusting the dc common-mode rejection, and CC
is used for ac common-mode rejection adjustments.
0
03
02
-04
4
+VIN
–VIN
1k
2k
OUTPUT
1k
10k
1.9k
200
10T
RC
5pF
RG
10k
CC
Figure 44. A High Speed Instrumentation Amplifier
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相關(guān)代理商/技術(shù)參數(shù) |
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