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參數(shù)資料
| 型號： | OPA3682 |
| 英文描述： | Triple, Wideband, Fixed Gain BUFFER AMPLIFIER With Disable |
| 中文描述： | 三，寬帶，固定增益緩沖放大器具有禁用 |
| 文件頁數(shù)： | 15/19頁 |
| 文件大?。?/td> | 234K |
| 代理商： | OPA3682 |
15
OPA3682
The output resistors isolate the outputs from each other
when switching between channels. The feedback network of
the disabled channels forms part of the load seen by the
enabled amplifier, attenuating the signal slightly.
LOWPASS FILTER
The circuit in Figure 5 realizes a 7th-order Butterworth
lowpass filter with a –3dB bandwidth of 20MHz. This filter
is based on the KRC active filter topology, which uses an
amplifier with the fixed gain
≥
1. The OPA3682 makes a good
amplifier for this type of filter. The component values have
been pre-distorted to compensate for the op amp’s parasitic
effects.
DESIGN-IN TOOLS
APPLICATIONS SUPPORT
The Burr-Brown Applications department is available for
design assistance at 1-800-548-6132 (US/Canada only). The
Burr-Brown internet web page (http://www.burr-brown.com)
has the latest data sheets and other design aids.
DEMONSTRATION BOARDS
A PC board is available to assist in the initial evaluation of
circuit performance using the OPA3682E. It is available as
a free unpopulated PC board delivered with descriptive
documentation. The summary information for this board is
shown in the table below.
Contact the Burr-Brown applications support line to request
this board.
MACROMODELS AND APPLICATIONS SUPPORT
Computer simulation of circuit performance using SPICE
is often useful when analyzing the performance of analog
circuits and systems. This is particularly true for video and
RF amplifier circuits where parasitic capacitance and induc-
tance can have a major effect on circuit performance. A
SPICE model for the OPA3682 is available through the
Burr-Brown Internet web page (http://www.burr-brown.com).
The Applications department is also available for design
assistance at this number. These models do a good job of
predicting small-signal AC and transient performance under
a wide variety of operating conditions. They do not do as
well in predicting the harmonic distortion or dG/d
φ
charac-
teristics. These models do not attempt to distinguish between
the package types in their small-signal AC performance.
DEMO
BOARD
NUMBER
LITERATURE
REQUEST
NUMBER
PRODUCT
PACKAGE
OPA3682E
SSOP-16
DEM-OPA368xE
MKT-354
FIGURE 5. 7th-Order Butterworth Filter.
1/3
OPA3682
400
400
120pF
82pF
220pF
22pF
68pF
47.5
124
1/3
OPA3682
400
56pF
110
255
400
1/3
OPA3682
400
400
180pF
48.7
95.3
49.9
(open)
(open)
V
OUT
V
IN
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| OPA3682E | Triple, Wideband, Fixed Gain BUFFER AMPLIFIER With Disable |
| OPA3682U | Triple, Wideband, Fixed Gain BUFFER AMPLIFIER With Disable |
| OPA404KU | 256K, 32K X 8, 2.5V HI-SPEED SER EE, -40C to +85C, 8-PDIP, TUBE |
| OPA4650 | Wideband, Low Power, Quad Voltage Feedback OPERATIONAL AMPLIFIER |
| OPA4650P | Wideband, Low Power, Quad Voltage Feedback OPERATIONAL AMPLIFIER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OPA3682E | 制造商:BB 制造商全稱:BB 功能描述:Triple, Wideband, Fixed Gain BUFFER AMPLIFIER With Disable |
| OPA3682E/250 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Buffer/Voltage Follower |
| OPA3682E/2K5 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Buffer/Voltage Follower |
| OPA3682U | 功能描述:高速運算放大器 SOIC-16 Triple Wide RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| OPA3682U/2K5 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Buffer/Voltage Follower |
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