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參數(shù)資料
| 型號： | MIC922BC5 TR |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 2/11頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP 230MHZ HS LP SC70-5 |
| 標準包裝： | 3,000 |
| 系列： | Teeny™ |
| 放大器類型： | 通用 |
| 電路數(shù)： | 1 |
| 轉換速率： | 1500 V/µs |
| 增益帶寬積： | 230MHz |
| -3db帶寬： | 400MHz |
| 電流 - 輸入偏壓： | 1.7µA |
| 電壓 - 輸入偏移： | 400µV |
| 電流 - 電源： | 2.5mA |
| 電流 - 輸出 / 通道： | 84mA |
| 電壓 - 電源，單路/雙路(±)： | ±2.5 V ~ 9 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 6-TSSOP（5 引線），SC-88A，SOT-353 |
| 供應商設備封裝： | SC-70-5 |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | MIC922BC5TR MIC922BC5TR-ND |
MIC922
Micrel, Inc.
MIC922
10
May 2006
Applications Information
The MIC922 is a high-speed, voltage-feedback operational
amplier featuring very low supply current and excellent
stability. This device is unity gain stable, capable of driving
high capacitance loads.
Driving High Capacitance
The MIC922 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 add-
ing a small resistor (<100Ω) in series with the
output.
Feedback Resistor/Capacitor Selection
Conventional op amp gain congurations and resistor selec-
tion apply, the MIC922 is NOT a current feedback device.
Also, for minimum peaking, the feedback resistor should
have low parasitic capacitance. To use the part as a follower,
the output should be connected to input via a short wire. At
high frequency, the parasitic capacitance at the input might
cause peaking in the closed-loop frequency response. A
1pF capacitor should be used across the feedback resistor
to compensate for this parasitic peaking.
Layout Considerations
All high speed devices require careful PCB layout.The follow-
ing 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.
Power Supply Bypassing
Regular supply bypassing techniques are recommended.
A 10F capacitor in parallel with a 0.1F 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, has 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 MIC922 with no load, dissipates power equal to the qui-
escent supply current × supply voltage
PD(no load) = (VV+ – VV-)IS
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.
PD(output stage) = (VV+ – VVOUT)IOUT
Total Power Dissipation = PD(no load) + PD(output stage)
Ensure the total power dissipated in the device is no greater
than the thermal capacity of the package. The SC70-5 pack-
age has a thermal resistance of 450°C/W.
Max. Allowable Power Dissipation =
450°C/W
TJ(max) – TA(max)
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MIC922YC5 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:230MHz Low-Power SC-70 Op Amp |
| MIC922YC5 TR | 功能描述:運算放大器 - 運放 Op Amp, 1500V/us, 230MHz GBW, 2.5mA, 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MIC922YC5-TR | 功能描述:General Purpose Amplifier 1 Circuit SC-70-5 制造商:microchip technology 系列:Teeny?? 包裝:剪切帶（CT） 零件狀態(tài):Last Time Buy 放大器類型:通用 電路數(shù):1 輸出類型:- 壓擺率:1500 V/μs 增益帶寬積:230MHz -3db 帶寬:400MHz 電流 - 輸入偏置:1.7μA 電壓 - 輸入失調(diào):400μV 電流 - 電源:2.5mA 電流 - 輸出/通道:84mA 電壓 - 電源，單/雙（±）:±2.5 V ~ 9 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:5-TSSOP，SC-70-5，SOT-353 供應商器件封裝:SC-70-5 標準包裝:1 |
| MIC923 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:410MHz Low-Power SC70 Op Amp |
| MIC923_06 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:410MHz Low-Power SC70 Op Amp |
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