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參數(shù)資料
| 型號： | AD8067ARTZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 10/25頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP VF R-R PREC LN SOT23-5 |
| 產(chǎn)品培訓模塊： | Pulse Oximetry Solutions |
| 標準包裝： | 1 |
| 系列： | FastFET™ |
| 放大器類型： | 電壓反饋 |
| 電路數(shù)： | 1 |
| 輸出類型： | 滿擺幅 |
| 轉換速率： | 640 V/µs |
| -3db帶寬： | 54MHz |
| 電流 - 輸入偏壓： | 0.6pA |
| 電壓 - 輸入偏移： | 200µV |
| 電流 - 電源： | 6.6mA |
| 電流 - 輸出 / 通道： | 26mA |
| 電壓 - 電源，單路/雙路(±)： | 5 V ~ 24 V，±2.5 V ~ 12 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SC-74A，SOT-753 |
| 供應商設備封裝： | SOT-23-5 |
| 包裝： | 標準包裝 |
| 產(chǎn)品目錄頁面： | 770 (CN2011-ZH PDF) |
| 其它名稱： | AD8067ARTZ-REEL7DKR |
Data Sheet
AD8067
Rev. B | Page 17 of 24
Grounding
To minimize parasitic inductances and ground loops in high
speed, densely populated boards, a ground plane layer is critical.
Understanding where the current flows in a circuit is critical in
the implementation of high speed circuit design. The length of
the current path is directly proportional to the magnitude of the
parasitic inductances and thus the high frequency impedance of
the path. Fast current changes in an inductive ground return
creates unwanted noise and ringing.
The length of the high frequency bypass capacitor leads is
critical. A parasitic inductance in the bypass grounding works
against the low impedance created by the bypass capacitor.
Because load currents flow from supplies as well as ground, the
load should be placed at the same physical location as the
bypass capacitor ground. For large values of capacitors, which
are intended to be effective at lower frequencies, the current
return path length is less critical.
Power Supply Bypassing
Power supply pins are actually inputs and care must be taken to
provide a clean, low noise dc voltage source to these inputs. The
bypass capacitors have two functions:
Provide a low impedance path for unwanted frequencies
from the supply inputs to ground, thereby reducing the effect
of noise on the supply lines
Provide localized charge storage—this is usually
accomplished with larger electrolytic capacitors
Decoupling methods are designed to minimize the bypassing
impedance at all frequencies. This can be accomplished with a
combination of capacitors in parallel to ground. Good quality
ceramic chip capacitors (X7R or NPO) should be used and
always kept as close to the amplifier package as possible. A
parallel combination of a 0.1 F ceramic and a 10 F electrolytic,
covers a wide range of rejection for unwanted noise. The 10 F
capacitor is less critical for high frequency bypassing, and in
most cases, one per supply line is sufficient.
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