参数资料
| 型号： | AD8092AR |
| 厂商： | Analog Devices Inc |
| 文件页数： | 5/21页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP VF R-R DUAL LDIST 8SOIC |
| 标准包装： | 98 |
| 放大器类型： | 电压反馈 |
| 电路数： | 2 |
| 输出类型： | 满摆幅 |
| 转换速率： | 170 V/µs |
| -3db带宽： | 110MHz |
| 电流 - 输入偏压： | 1.4µA |
| 电压 - 输入偏移： | 1800µV |
| 电流 - 电源： | 4.8mA |
| 电流 - 输出 / 通道： | 45mA |
| 电压 - 电源，单路/双路(±)： | 3 V ~ 12 V，±1.5 V ~ 6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 管件 |
AD8091/AD8092
Rev. C | Page 12 of 20
LAYOUT, GROUNDING, AND BYPASSING CONSIDERATIONS
POWER SUPPLY BYPASSING
Power supply pins are actually inputs, and care must be taken so
that a noise-free stable dc voltage is applied. The purpose of
bypass capacitors is to create low impedances from the supply
to ground at all frequencies, thereby shunting or filtering a
majority of the noise.
Decoupling schemes are designed to minimize the bypassing
impedance at all frequencies with a parallel combination of
capacitors. Chip capacitors of 0.01 μF or 0.001 μF (X7R or
NPO) are critical and should be as close as possible to the
amplifier package. Larger chip capacitors, such as the 0.1 μF
capacitor, can be shared among a few closely spaced active
components in the same signal path. A 10 μF tantalum
capacitor is less critical for high frequency bypassing and, in
most cases, only one per board is needed at the supply inputs.
GROUNDING
A ground plane layer is important in densely packed PC boards
to spread the current-minimizing parasitic inductances.
However, an understanding of where the current flows in a
circuit is critical to implementing effective high speed circuit
design. The length of the current path is directly proportional to
the magnitude of parasitic inductances and thus the high
frequency impedance of the path. High speed currents in an
inductive ground return create an unwanted voltage noise.
The lengths of the high frequency bypass capacitor leads are
most critical. A parasitic inductance in the bypass grounding
works 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 intended to be effective at
lower frequencies, the current return path distance is less
critical.
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 reduces the input impedance
at high frequencies, in turn increasing the amplifier’s gain and
causing peaking of the frequency response or even oscillations,
if severe enough. It is recommended that the external passive
components, which are 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 distance of at
least 0.05 mm from the input pins on all layers of the board.
INPUT-TO-OUTPUT COUPLING
The input and output signal traces should not be parallel to
minimize capacitive coupling between the inputs and output
and to avoid any positive feedback.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8092AR-EBZ | 功能描述:BOARD EVAL FOR AD8092AR RoHS:是 类别:编程器，开发系统 >> 评估板 - 运算放大器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| AD8092ARM | 制造商:Analog Devices 功能描述:OP Amp Dual GP R-R O/P 制造商:Rochester Electronics LLC 功能描述:SOIC DUAL 200MHZ L/C RAIL-TO-RAIL AMP - Bulk |
| AD8092ARM-EBZ | 功能描述:BOARD EVAL FOR AD8092ARM RoHS:是 类别:编程器，开发系统 >> 评估板 - 运算放大器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| AD8092ARM-REEL | 制造商:Analog Devices 功能描述:OP Amp Dual GP R-R O/P 制造商:Rochester Electronics LLC 功能描述:SOIC DUAL 200MHZ L/C RAIL-TO-RAIL AMP - Tape and Reel |
| AD8092ARM-REEL7 | 制造商:Analog Devices 功能描述:OP Amp Dual GP R-R O/P 制造商:Analog Devices 功能描述:OP AMP DUAL GP R-R O/P 6V/12V 8MSOP - Tape and Reel |
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