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參數(shù)資料
| 型號： | MIC923BC5 |
| 廠商： | MICREL INC |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | 10000 SYSTEM GATE 3.3 VOLT LOGIC CELL AR - NOT RECOMMENDED for NEW DESIGN |
| 中文描述： | OP-AMP, 5000 uV OFFSET-MAX, 320 MHz BAND WIDTH, PDSO5 |
| 封裝： | SC-70, 5 PIN |
| 文件頁數(shù)： | 10/11頁 |
| 文件大?。?/td> | 358K |
| 代理商： | MIC923BC5 |
MIC923
Applications Information
The MIC923 is a high-speed, voltage-feedback operational
amplifier featuring very low supply current and excellent
stability. This device is unity gain stable, capable of driving
high capacitance loads.
Driving High Capacitance
The MIC923 is stable when driving high capacitance, making
it ideal for driving long coaxial cables or other high-capaci-
tance loads. Most high-speed op amps are only able to drive
limited capacitance.
Note: increasing load capacitance does reduce
the speed of the device. In applications where
the load capacitance reduces the speed of the
op amp to an unacceptable level, the effect of
the load capacitance can be reduced by adding
a small resistor (<100
) in series with the
output.
Feedback Resistor Selection
Conventional op amp gain configurations and resistor selec-
tion apply, the MIC923 is NOT a current feedback device.
Also, for minimum peaking, the feedback resistor should
have low parasitic capacitance, usually 470
is ideal. To use
the part as a follower, the output should be connected to input
via a short wire.
Layout Considerations
All high speed devices require careful PCB layout. The
following guidelines should be observed: Capacitance, par-
ticularly on the two inputs pins will degrade performance;
avoid large copper traces to the inputs. Keep the output signal
away from the inputs and use a ground plane.
It is important to ensure adequate supply bypassing capaci-
tors are located close to the device.
Micrel
MIC923
10
March 2002
Power Supply Bypassing
Regular supply bypassing techniques are recommended. A
10
μ
F capacitor in parallel with a 0.1
μ
F capacitor on both the
positive and negative supplies are ideal. For best perfor-
mance all bypassing capacitors should be located as close to
the op amp as possible and all capacitors should be low ESL
(equivalent series inductance), ESR (equivalent series resis-
tance). Surface-mount ceramic capacitors are ideal.
Thermal Considerations
The SC70-5 package, like all small packages, have a high
thermal resistance. It is important to ensure the IC does not
exceed the maximum operating junction (die) temperature of
85
°
C. The part can be operated up to the absolute maximum
temperature rating of 125
°
C, but between 85
°
C and 125
°
C
performance will degrade, in par-ticular CMRR will reduce.
An MIC923 with no load, dissipates power equal to the
quiescent supply current
×
supply voltage
(
When a load is added, the additional power is dissipated in
the output stage of the op amp. The power dissipated in the
device is a function of supply voltage, output voltage and
output current.
(
P
V
V
I
D
V
V
S
(noload)
=
)
+
P
V
V
I
D
V
OUT
OUT
(output stage)
=
)
+
TotalPower Dissipation
P
P
D
D
=
+
(noload)
(outpu stage)
Ensure the total power dissipated in the device is no greater
than the thermal capacity of the package. The SC70-5
package has a thermal resistance of 450
°
C/W.
Max AllowablePowerDissipation
.
T
T
J
A
=
(max)
450 C / W
(max)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC923BC5 TR | 功能描述:IC OPAMP 410MHZ HS LP SC70-5 RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:Teeny™ 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類型:通用 電路數(shù):1 輸出類型:滿擺幅 轉(zhuǎn)換速率:0.11 V/µs 增益帶寬積:350kHz -3db帶寬:- 電流 - 輸入偏壓:4nA 電壓 - 輸入偏移:20µV 電流 - 電源:260µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 36 V，±1.35 V ~ 18 V 工作溫度:-40°C ~ 85°C 安裝類型: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-SO 包裝:帶卷 (TR) |
| MIC923BC5TR | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel 制造商:RF Micro Devices Inc 功能描述: |
| MIC923YC5 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:410MHz Low-Power SC70 Op Amp |
| MIC923YC5 TR | 功能描述:運(yùn)算放大器 - 運(yùn)放 Op Amp, 1500V/us, 410MHz GBW, 2.mA, SC70 (Lead Free) RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MIC94001 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:P-Channel MOSFET |
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