Motore di ricerca datesheet componenti elettronici
  Italian  ▼
ALLDATASHEETIT.COM

X  

AD8012ARM Scheda tecnica(PDF) 11 Page - Analog Devices

Il numero della parte AD8012ARM
Spiegazioni elettronici  Dual 350 MHz Low Power Amplifier
Download  15 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

AD8012ARM Scheda tecnica(HTML) 11 Page - Analog Devices

Back Button AD8012ARM Datasheet HTML 7Page - Analog Devices AD8012ARM Datasheet HTML 8Page - Analog Devices AD8012ARM Datasheet HTML 9Page - Analog Devices AD8012ARM Datasheet HTML 10Page - Analog Devices AD8012ARM Datasheet HTML 11Page - Analog Devices AD8012ARM Datasheet HTML 12Page - Analog Devices AD8012ARM Datasheet HTML 13Page - Analog Devices AD8012ARM Datasheet HTML 14Page - Analog Devices AD8012ARM Datasheet HTML 15Page - Analog Devices  
Zoom Inzoom in Zoom Outzoom out
 11 / 15 page
background image
AD8012
–11–
REV. A
THEORY OF OPERATION
The AD8012 is a dual high speed CF amplifier that attains new
levels of bandwidth (BW), power, distortion and signal swing
capability. Its wide dynamic performance (including noise) is
the result of both a new complementary high speed bipolar
process and a new and unique architectural design. The AD8012
basically uses a two gain stage complementary design approach
versus the traditional “single stage” complementary mirror
structure sometimes referred to as the Nelson amplifier. Though
twin stages have been tried before, they typically consumed
high power since they were of a folded cascade design much like
the AD9617. This design allows for the standing or quiescent
current to add to the high signal or slew current-induced stages.
In the time domain, the large signal output rise/fall time and
slew rate is typically controlled by the small signal BW of the
amplifier and the input signal step amplitude respectively, not
the dc quiescent current of the gain stages (with the exception
of input level shift diodes Q1/Q2). Using two stages vs. one
also allows for a higher overall gain bandwidth product (GBWP)
for the same power, thus lower signal distortion and the ability
to drive heavier external loads. In addition, the second gain
stage also isolates (divides down) A3’s input reflected load drive
and the nonlinearities created resulting in relatively lower dis-
tortion and higher open-loop gain.
Overall, when “high” external load drive and low ac distortion
is a requirement, a twin gain stage integrating amplifier like the
AD8012 will provide excellent results for lower power over the
traditional single stage complementary devices. In addition,
being a CF amplifier, closed-loop BW variations versus exter-
nal gain variations (varying RN) will be much lower compared
to a VF op amp, where the BW varies inversely with gain. An-
other key attribute of this amplifier is its ability to run on a
single 5 V supply due in part to its wide common-mode input
and output voltage range capability. For 5 V supply operation,
the device obviously consumes half the quiescent power (vs.
10 V supply) with little degradation in its ac and dc perfor-
mance characteristics. See data sheet comparisons.
DC GAIN CHARACTERISTICS
Gain stages A1/A1B and A2/A2B combined provide negative
feedforward transresistance gain. See Figure 40. Stage A3 is a
unity gain buffer which provides external load isolation to A2.
Each stage uses a symmetrical complementary design. (A3 is
also complementary though not explicitly shown). This is done
to reduce both second order signal distortion and overall quies-
cent power as discussed above. In the quasi dc to low frequency
region, the closed loop gain relationship can be approximated
as:
G = 1+RF /RN
noninverting operation
G = –RF /RN
inverting operation
These basic relationships above are common to all traditional
operational amplifiers.
VP
Q1
Q2
IPP
IPN
INP
IPN
VN
A1
A1
ZI
IQ1
Q3
Q4
IE
CP1
CP1
Z2
A2
CL
RN
ICQ – IO
RF
VO
CD
ICQ + IO
VO
IQ1
AD8012
A2
CP2
Z1 = R1 || C1
Z1
CD
A3
RL
Z1
–VI
–VI
IR – IFC
IR + IFC
+–
Figure 40. Simplified Block Diagram


Codice articolo simile - AD8012ARM

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
Analog Devices
AD8012ARM AD-AD8012ARM Datasheet
261Kb / 16P
   Dual 350 MHz Low Power Amplifier
REV. B
AD8012ARM AD-AD8012ARM Datasheet
475Kb / 17P
   Dual 350 MHz Low Power Amplifier
REV. B
AD8012ARM-REEL AD-AD8012ARM-REEL Datasheet
261Kb / 16P
   Dual 350 MHz Low Power Amplifier
REV. B
AD8012ARM-REEL AD-AD8012ARM-REEL Datasheet
475Kb / 17P
   Dual 350 MHz Low Power Amplifier
REV. B
AD8012ARM-REEL7 AD-AD8012ARM-REEL7 Datasheet
261Kb / 16P
   Dual 350 MHz Low Power Amplifier
REV. B
More results

Descrizione simile - AD8012ARM

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
Analog Devices
AD8012ARZ AD-AD8012ARZ Datasheet
475Kb / 17P
   Dual 350 MHz Low Power Amplifier
REV. B
AD8012 AD-AD8012_03 Datasheet
261Kb / 16P
   Dual 350 MHz Low Power Amplifier
REV. B
AD8012 AD-AD8012_15 Datasheet
475Kb / 17P
   Dual 350 MHz Low Power Amplifier
REV. B
logo
Ultralife Corporation.
A-320V1-HKT ULTRALIFE-A-320V1-HKT Datasheet
780Kb / 2P
   350-450 MHz Amplifier Kit
5/30/14
logo
Texas Instruments
THS9001 TI-THS9001 Datasheet
451Kb / 17P
[Old version datasheet]   50 MHz to 350 MHz CASCADEABLE AMPLIFIER
logo
STMicroelectronics
THS9001 STMICROELECTRONICS-THS9001_08 Datasheet
601Kb / 20P
   50 MHz to 350 MHz CASCADEABLE AMPLIFIER
logo
Analog Devices
AD8039 AD-AD8039_15 Datasheet
533Kb / 17P
   Low Power, 350 MHz Voltage Feedback Amplifiers
Rev. G
logo
Hittite Microwave Corpo...
HMC356LP3 HITTITE-HMC356LP3 Datasheet
318Kb / 6P
   GaAs PHEMT MMIC LOW NOISE AMPLIFIER, 350 - 550 MHz
logo
Analog Devices
AD8039ARZ AD-AD8039ARZ Datasheet
533Kb / 17P
   Low Power, 350 MHz Voltage Feedback Amplifiers
Rev. G
AD8038 AD-AD8038 Datasheet
346Kb / 12P
   Low Power 350 MHz Voltage Feedback Amplifiers
REV. B
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15


Scheda tecnica Scarica

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEETIT.COM
Lei ha avuto il aiuto da alldatasheet?  [ DONATE ] 

Di alldatasheet   |   Richest di pubblicita   |   contatti   |   Privacy Policy   |   scambio Link   |   Ricerca produttore
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