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| 型號： | OPA651P |
| 英文描述： | IC-LOW POWER OP-AMP |
| 中文描述： | 集成電路低功耗運算腺苷 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大小： | 114K |
| 代理商： | OPA651P |
10
OPA651
DISTORTION
The OPA651’s harmonic distortion characteristics into a
100
load are shown versus frequency and power output in
the typical performance curves. Distortion can be signifi-
cantly improved by increasing the load resistance as illus-
trated in Figure 5. Remember to include the contribution of
the feedback network when calculating the effective load
resistance seen by the amplifier.
10
100
1k
–50
–55
–60
–65
–70
–75
–80
H
3fo
2fo
G = +2
Load Resistance
(
)
FIGURE 5. 5MHz Harmonic Distortion vs Load Resistance.
NOISE FIGURE
The OPA651 voltage noise spectral density is specified in
the Typical Performance Curves. For RF applications, how-
ever, Noise Figure (NF) is often the preferred noise specifi-
cation since it allows system noise performance to be more
easily calculated. The OPA651’s Noise Figure vs Source
Resistance is shown in Figure 6.
NOISE FIGURE vs SOURCE RESISTANCE
Source Resistance (
)
30
25
20
15
10
5
0
10
100
1k
100k
10k
N
NF = 10 LOG 1 +
e
n2
+ (I
n
R
S
)
2
4KTR
S
FIGURE 6. Noise Figure vs Source Resistance.
SPICE MODELS AND EVALUATION BOARD
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. SPICE
models are available on a disk from the Burr-Brown Appli-
cations Department.
Demonstration boards are available for each OPA651 pack-
age style. These boards implement a very low parasitic
layout that will produce the excellent frequency and pulse
responses shown in the Typical Performance Curves. For
each package style, the recommended demonstration board
is:
Contact your local Burr-Brown sales office or distributor to
order demonstration boards.
BOARD
PART
NUMBER
LITERATURE
REQUEST
NUMBER
PRODUCT
PACKAGE
OPA651P
OPA651U
OPA651N
8-Pin DIP
8-Pin SO-8
6-Pin SOT23-6
DEM-OPA65xP
DEM-OPA65xU
DEM-OPA6xxN
—
—
MKT-348
OPA651
V
OUT
402
402
Video
Input
75
75
75
Transmission Line
75
TYPICAL APPLICATION
FIGURE 7. Low Distortion Video Amplifier.
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PDF描述 |
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| OPA656UB | OP-AMP|SINGLE|BIPOLAR/JFET|SOP|8PIN|PLASTIC |
| OPA658N-250 | Current-Feedback Operational Amplifier |
| OPA658N-3K | Current-Feedback Operational Amplifier |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OPA651U | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| OPA651U/2K5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| OPA651UB | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| OPA65250 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Wideband, Unity-Gain Stable, FET-Input OPERATIONAL AMPLIFIER |
| OPA652K5 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Wideband, Unity-Gain Stable, FET-Input OPERATIONAL AMPLIFIER |
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