- 您現在的位置：買賣IC網 > PDF目錄373934 > AD8065ART-R2 (ANALOG DEVICES INC) High Performance, 145 MHz FastFET⑩ Op Amps PDF資料下載
參數資料
| 型號： | AD8065ART-R2 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | High Performance, 145 MHz FastFET⑩ Op Amps |
| 中文描述： | 1 CHANNEL, VIDEO AMPLIFIER, PDSO5 |
| 封裝： | MO-178AA, SOT-23, 5 PIN |
| 文件頁數： | 22/28頁 |
| 文件大小： | 364K |
| 代理商： | AD8065ART-R2 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁當前第22頁第23頁第24頁第25頁第26頁第27頁第28頁
AD8065/AD8066
The length of the high frequency bypass capacitor leads is most
critical. A parasitic inductance in the bypass grounding will
work against the low impedance created by the bypass capacitor.
Place the ground leads of the bypass capacitors at the same
physical location. Because load currents flow from the supplies
as well, the ground for the load impedance should be at the
same physical location as the bypass capacitor grounds. For the
larger value capacitors, which are effective at lower frequencies,
the current return path distance is less critical.
Rev. E | Page 22 of 28
LEAKAGE CURRENTS
Poor PC board layout, contaminants, and the board insulator
material can create leakage currents that are much larger than
the input bias current of the AD8065/AD8066. Any voltage
differential between the inputs and nearby runs will set up
leakage currents through the PC board insulator, for example,
1 V/100 G = 10 pA. Similarly, any contaminants on the board
can create significant leakage (skin oils are a common problem).
To significantly reduce leakage, put a guard ring (shield) around
the inputs and input leads that are driven to the same voltage
potential as the inputs. This way there is no voltage potential
between the inputs and surrounding area to set up any leakage
currents. For the guard ring to be completely effective, it must
be driven by a relatively low impedance source and should
completely surround the input leads on all sides, above and
below, using a multilayer board.
Another effect that can cause leakage currents is the charge
absorption of the insulator material itself. Minimizing the
amount of material between the input leads and the guard ring
will help to reduce the absorption. Also, low absorption
materials, such as Teflon or ceramic, could be necessary in
some instances.
INPUT CAPACITANCE
Along with bypassing and ground, high speed amplifiers can be
sensitive to parasitic capacitance between the inputs and
ground. A few pF of capacitance will reduce the input imped-
ance at high frequencies, in turn increasing the amplifier’s gain,
causing peaking of the frequency response or even oscillations,
if severe enough. It is recommended that the external passive
components connected to the input pins be placed as close as
possible to the inputs to avoid parasitic capacitance. The ground
and power planes must be kept at a small distance from the
input pins on all layers of the board.
OUTPUT CAPACITANCE
To a lesser extent, parasitic capacitances on the output can cause
peaking and ringing of the frequency response. There are two
methods to effectively minimize their effect.
As shown in Figure 57, put a small value resistor (R
S
) in
series with the output to isolate the load capacitor from the
amp’s output stage. A good value to choose is 20 (see
Figure 10).
Increase the phase margin with higher noise gains or add a
pole with a parallel resistor and capacitor from IN to the
output.
R
S
= 20
V
I
AD8065
C
L
V
O
0
Figure 57. Output Isolation Resistor
R
SH
= 10
11
V
O
R
F
C
F
C
M
R
F
C
M
C
D
C
F
+ C
S
C
S
V
B
I
PHOTO
0
Figure 58. Wideband Photodiode Preamp
相關PDF資料 |
PDF描述 |
|---|---|
| AD8065ART-REEL | High Performance, 145 MHz FastFET⑩ Op Amps |
| AD8065ART-REEL7 | High Performance, 145 MHz FastFET⑩ Op Amps |
| AD8066 | High Performance, 145 MHz FastFET⑩ Op Amps |
| AD8066AR | High Performance, 145 MHz FastFET⑩ Op Amps |
| AD8066AR-REEL | High Performance, 145 MHz FastFET⑩ Op Amps |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD8065ART-REEL | 功能描述:IC OPAMP VF R-R LN LP SOT23-5 RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:FastFET™ 標準包裝:50 系列:- 放大器類型:通用 電路數:2 輸出類型:滿擺幅 轉換速率:1.8 V/µs 增益帶寬積:6.5MHz -3db帶寬:4.5MHz 電流 - 輸入偏壓:5nA 電壓 - 輸入偏移:100µV 電流 - 電源:65µA 電流 - 輸出 / 通道:35mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:10-MSOP 包裝:管件 |
| AD8065ART-REEL7 | 功能描述:IC OPAMP VF R-R LN LP SOT23-5 RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:FastFET™ 標準包裝:50 系列:- 放大器類型:通用 電路數:2 輸出類型:滿擺幅 轉換速率:1.8 V/µs 增益帶寬積:6.5MHz -3db帶寬:4.5MHz 電流 - 輸入偏壓:5nA 電壓 - 輸入偏移:100µV 電流 - 電源:65µA 電流 - 輸出 / 通道:35mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:10-MSOP 包裝:管件 |
| AD8065ARTZ-R2 | 制造商:Analog Devices 功能描述:OP AMP SGL VOLT FDBK R-R O/P 12V/24V 5PIN SOT-23 - Tape and Reel 制造商:Analog Devices 功能描述:IC OP AMP SINGLE 145MHZ 5SOT23 制造商:Analog Devices 功能描述:IC OPERATIONAL AMPLIFIER SINGLE BIPOL 制造商:Analog Devices 功能描述:IC, OP AMP, SINGLE, 145MHZ, 5SOT23 制造商:Analog Devices 功能描述:OP Amp Single Volt Fdbk R-R O/P 12V/24V |
| AD8065ARTZ-R2 | 制造商:Analog Devices 功能描述:Operational Amplifier (Op-Amp) IC |
| AD8065ARTZ-REEL | 功能描述:IC OPAMP VF R-R LN LP SOT23-5 RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:FastFET™ 標準包裝:50 系列:- 放大器類型:通用 電路數:2 輸出類型:滿擺幅 轉換速率:1.8 V/µs 增益帶寬積:6.5MHz -3db帶寬:4.5MHz 電流 - 輸入偏壓:5nA 電壓 - 輸入偏移:100µV 電流 - 電源:65µA 電流 - 輸出 / 通道:35mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:10-MSOP 包裝:管件 |
發布緊急采購，3分鐘左右您將得到回復。