Moteur de recherche de fiches techniques de composants électroniques
  French  ▼
ALLDATASHEET.FR

X  

HFA1150 Fiches technique(PDF) 4 Page - Intersil Corporation

No de pièce HFA1150
Description  700MHz, SOT-23, Low Distortion Current Feedback Operational Amplifier
Download  13 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  INTERSIL [Intersil Corporation]
Site Internet  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

HFA1150 Fiches technique(HTML) 4 Page - Intersil Corporation

  HFA1150 Datasheet HTML 1Page - Intersil Corporation HFA1150 Datasheet HTML 2Page - Intersil Corporation HFA1150 Datasheet HTML 3Page - Intersil Corporation HFA1150 Datasheet HTML 4Page - Intersil Corporation HFA1150 Datasheet HTML 5Page - Intersil Corporation HFA1150 Datasheet HTML 6Page - Intersil Corporation HFA1150 Datasheet HTML 7Page - Intersil Corporation HFA1150 Datasheet HTML 8Page - Intersil Corporation HFA1150 Datasheet HTML 9Page - Intersil Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 4 / 13 page
background image
4
Application Information
Relevant Application Notes
The following Application Notes pertain to the HFA1150:
• AN9787 - An Intuitive Approach to Understanding
Current Feedback Amplifiers
• AN9420 - Current Feedback Amplifier Theory and
Applications
• AN9663-Converting from Voltage Feedback to Current
Feedback Amplifiers
• AN9891-Operating the HFA1150 from 5V Single
Supply
These publications may be obtained from Intersil’s web site
(http://www.intersil.com) or via our AnswerFAX system.
Performance Differences Between Packages
The HFA1150 is a high frequency current feedback amplifier.
As such, it is sensitive to parasitic capacitances which
influence the amplifier’s operation. The different parasitic
capacitances of the SOIC and SOT-23 packages yield
performance differences (notably bandwidth and bandwidth
related parameters) between the two devices - see Electrical
Specification tables for details.
Because of these performance differences, designers
should evaluate and breadboard with the same package
style to be used in production.
Note that some “Typical Performance Curves” have separate
graphs for each package type. Graphs not labeled with a
specific package type are applicable to both packages.
Optimum Feedback Resistor
The enclosed frequency response graphs detail the
performance of the HFA1150 in various gains. Although the
bandwidth dependency on ACL isn’t as severe as that of a
voltage feedback amplifier, there is an appreciable decrease
in bandwidth at higher gains. This decrease can be
minimized by taking advantage of the current feedback
amplifier’s unique relationship between bandwidth and RF.
All current feedback amplifiers require a feedback resistor,
even for unity gain applications, and the RF, in conjunction
with the internal compensation capacitor, sets the dominant
pole of the frequency response. Thus, the amplifier’s
bandwidth is inversely proportional to RF. The HFA1150 is
optimized for a RF = 576Ω/499Ω (SOIC/SOT-23), at a gain of
+2. Decreasing RF decreases stability, resulting in excessive
peaking and overshoot (Note: Capacitive feedback causes
the same problems due to the feedback impedance
decrease at higher frequencies). At higher gains the
amplifier is more stable, so RF can be decreased in a trade-
off of stability for bandwidth. The table below lists
recommended RF values for various gains, and the expected
bandwidth.
5V Single Supply Operation
This amplifier operates at single supply voltages down to
4.5V. The dramatic supply current reduction at this operating
condition (refer also to Figure 25) makes this op amp an
even better choice for low power 5V systems. Refer to
Application Note AN9891 for further information.
Driving Capacitive Loads
Capacitive loads, such as an A/D input, or an improperly
terminated transmission line will degrade the amplifier’s
phase margin resulting in frequency response peaking and
possible oscillations. In most cases, the oscillation can be
avoided by placing a resistor (RS) in series with the output
prior to the capacitance.
Figure 1 details starting points for the selection of this
resistor. The points on the curve indicate the RS and CL
combinations for the optimum bandwidth, stability, and
settling time, but experimental fine tuning is recommended.
Picking a point above or to the right of the curve yields an
overdamped response, while points below or left of the curve
indicate areas of underdamped performance.
RS and CL form a low pass network at the output, thus
limiting system bandwidth well below the amplifier bandwidth
of 700MHz/540MHz (SOIC/SOT-23, AV = +2). By decreasing
RS as CL increases (as illustrated by the curves), the
maximum bandwidth is obtained without sacrificing stability.
In spite of this, bandwidth still decreases as the load
capacitance increases. For example, at AV = +2, RS = 20Ω,
CL = 22pF, the SOIC bandwidth is 410MHz, but the
bandwidth drops to 110MHz at AV = +2, RS = 5Ω,
CL = 390pF.
OPTIMUM FEEDBACK RESISTOR
ACL
RF (Ω)
SOIC/SOT-23
BANDWIDTH (MHz)
SOIC/SOT-23
-1
422/464
650/540
+1
383, (+RS = 226)/
549, (+RS = 100)
600/500
+2
576/499
700/540
+5
348/422
480/400
+10
178/348
380/300
HFA1150


Numéro de pièce similaire - HFA1150

FabricantNo de pièceFiches techniqueDescription
logo
Intersil Corporation
HFA1150 INTERSIL-HFA1150 Datasheet
341Kb / 11P
   700MHz, SOT-23, Low Distortion Current Feedback Operational Amplifier
logo
Renesas Technology Corp
HFA1150 RENESAS-HFA1150 Datasheet
713Kb / 11P
   700MHz, SOT-23, Low Distortion Current Feedback Operational Amplifier
logo
Intersil Corporation
HFA1150IB INTERSIL-HFA1150IB Datasheet
341Kb / 11P
   700MHz, SOT-23, Low Distortion Current Feedback Operational Amplifier
logo
Renesas Technology Corp
HFA1150IB RENESAS-HFA1150IB Datasheet
713Kb / 11P
   700MHz, SOT-23, Low Distortion Current Feedback Operational Amplifier
logo
Intersil Corporation
HFA1150IB96 INTERSIL-HFA1150IB96 Datasheet
341Kb / 11P
   700MHz, SOT-23, Low Distortion Current Feedback Operational Amplifier
More results

Description similaire - HFA1150

FabricantNo de pièceFiches techniqueDescription
logo
Intersil Corporation
HFA1150 INTERSIL-HFA1150_04 Datasheet
341Kb / 11P
   700MHz, SOT-23, Low Distortion Current Feedback Operational Amplifier
logo
Renesas Technology Corp
HFA1150 RENESAS-HFA1150 Datasheet
713Kb / 11P
   700MHz, SOT-23, Low Distortion Current Feedback Operational Amplifier
logo
Burr-Brown (TI)
OPA644 BURR-BROWN-OPA644 Datasheet
104Kb / 13P
   Low Distortion Current Feedback OPERATIONAL AMPLIFIER
logo
Intersil Corporation
HFA1155 INTERSIL-HFA1155 Datasheet
244Kb / 13P
   380MHz, SOT-23, Low Power Current Feedback Operational Amplifier
June 2000
HFA1155 INTERSIL-HFA1155_04 Datasheet
253Kb / 10P
   380MHz, SOT-23, Low Power Current Feedback Operational Amplifier
logo
Renesas Technology Corp
HFA1155 RENESAS-HFA1155 Datasheet
515Kb / 10P
   380MHz, SOT-23, Low Power Current Feedback Operational Amplifier
HFA1130 RENESAS-HFA1130 Datasheet
710Kb / 13P
   850MHz, Output Limiting, Low Distortion Current Feedback Operational Amplifier
logo
Intersil Corporation
HFA1130 INTERSIL-HFA1130 Datasheet
162Kb / 12P
   850MHz, Output Limiting, Low Distortion Current Feedback Operational Amplifier
September 1998
HFA1130 INTERSIL-HFA1130_05 Datasheet
378Kb / 12P
   850MHz, Output Limiting, Low Distortion Current Feedback Operational Amplifier
HFA1130IBZ INTERSIL-HFA1130IBZ Datasheet
381Kb / 13P
   850MHz, Output Limiting, Low Distortion Current Feedback Operational Amplifier
April 25, 2013
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13


Fiches technique Télécharger

Go To PDF Page


Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com