データシートサーチシステム
  Japanese  ▼
ALLDATASHEET.JP

X  

AD8534AR データシート(PDF) 8 Page - Analog Devices

部品番号 AD8534AR
部品情報  Low Cost, 250 mA Output Single-Supply Amplifiers
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
Logo AD - Analog Devices

AD8534AR データシート(HTML) 8 Page - Analog Devices

Back Button AD8534AR Datasheet HTML 4Page - Analog Devices AD8534AR Datasheet HTML 5Page - Analog Devices AD8534AR Datasheet HTML 6Page - Analog Devices AD8534AR Datasheet HTML 7Page - Analog Devices AD8534AR Datasheet HTML 8Page - Analog Devices AD8534AR Datasheet HTML 9Page - Analog Devices AD8534AR Datasheet HTML 10Page - Analog Devices AD8534AR Datasheet HTML 11Page - Analog Devices AD8534AR Datasheet HTML 12Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 8 / 16 page
background image
AD8531/AD8532/AD8534
REV. D
–8–
100
90
10
0%
VS = 2.5V
AV = 1
RL = 2k
TA = 25 C
500mV
500ns
Figure 29. Large Signal Transient
Response
APPLICATIONS
THEORY OF OPERATION
The AD8531/AD8532/AD8534 is an all-CMOS, high output
current drive, rail-to-rail input/output operational amplifier.
This is the latest entry in Analog Devices’ expanding family of
single-supply devices for the multimedia and telecom market-
places. Its high output current drive and stability with heavy
capacitive loads makes the AD8531/AD8532/AD8534 an excel-
lent choice as a drive amplifier for LCD panels.
Figure 32 illustrates a simplified equivalent circuit for the AD8531/
AD8532/AD8534. Like many rail-to-rail input amplifier configu-
rations, it is comprised of two differential pairs, one n-channel
(M1–M2) and one p-channel (M3–M4). These differential pairs
are biased by 50
mA current sources, each with a compliance
limit of approximately 0.5 V from either supply voltage rail. The
differential input voltage is then converted into a pair of differ-
ential output currents. These differential output currents are
then combined in a compound folded-cascade second gain
stage (M5–M9). The outputs of the second gain stage at M8
and M9 provide the gate voltage drive to the rail-to-rail output
stage. Additional signal current recombination for the output
stage is achieved through the use of transistors M11–M14.
In order to achieve rail-to-rail output swings, the AD8531/
AD8532/AD8534 design employs a complementary common-
source output stage (M15–M16). However, the output voltage
swing is directly dependent on the load current, as the difference
between the output voltage and the supply is determined by the
AD8531/AD8532/AD8534’s output transistors on-channel
resistance (see Figures 8 and 9). The output stage also exhibits
voltage gain by virtue of the use of common-source amplifiers;
as a result, the voltage gain of the output stage (thus, the open-
loop gain of the device) exhibits a strong dependence to the total
load resistance at the output of the AD8531/AD8532/AD8534.
50 A
100 A
100 A
20 A
VB2
M5
M8
M12
M15
M16
M11
OUT
M3
M4
M2
M1
IN–
IN+
VB3
M6
M7
M10
20 A
M13
50 A
V+
V–
M9
M14
Figure 32. AD8531/AD8532/AD8534 Simplified Equivalent
Circuit
Short-Circuit Protection
As a result of the design of the output stage for maximum load
current capability, the AD8531/AD8532/AD8534 does not have
any internal short-circuit protection circuitry. Direct connection of
the AD8531/AD8532/AD8534’s output to the positive supply
in single-supply applications will destroy the device. In those
applications where some protection is needed, but not at the
expense of reduced output voltage headroom, a low value resis-
tor in series with the output, as shown in Figure 33, can be
used. The resistor, connected within the feedback loop of the
amplifier, will have very little effect on the performance of the
amplifier other than limiting the maximum available output volt-
age swing. For single 5 V supply applications, resistors less than
20
W are not recommended.
5V
RX
20
VOUT
VIN
AD8532
Figure 33. Output Short-Circuit Protection
VS = 1.35V
AV = 1
RL = 2k
TA = 25 C
500ns
500mV
100
90
10
0%
Figure 30. Large Signal Transient
Response
1V
10 s
1V
0%
10
90
100
Figure 31. No Phase Reversal


同様の部品番号 - AD8534AR

メーカー部品番号データシート部品情報
logo
Analog Devices
AD8534AR AD-AD8534AR Datasheet
508Kb / 20P
   Low Cost, 250 mA Output, Single-Supply Amplifiers
Rev. F
AD8534AR-REEL AD-AD8534AR-REEL Datasheet
508Kb / 20P
   Low Cost, 250 mA Output, Single-Supply Amplifiers
Rev. F
AD8534ARU AD-AD8534ARU Datasheet
508Kb / 20P
   Low Cost, 250 mA Output, Single-Supply Amplifiers
Rev. F
AD8534ARU-REEL AD-AD8534ARU-REEL Datasheet
508Kb / 20P
   Low Cost, 250 mA Output, Single-Supply Amplifiers
Rev. F
AD8534ARUZ AD-AD8534ARUZ Datasheet
508Kb / 20P
   Low Cost, 250 mA Output, Single-Supply Amplifiers
Rev. F
More results

同様の説明 - AD8534AR

メーカー部品番号データシート部品情報
logo
Analog Devices
AD8534 AD-AD8534_15 Datasheet
508Kb / 20P
   Low Cost, 250 mA Output, Single-Supply Amplifiers
Rev. F
AD8531 AD-AD8531_08 Datasheet
508Kb / 20P
   Low Cost, 250 mA Output, Single-Supply Amplifiers
Rev. F
logo
Texas Instruments
TPS65133 TI-TPS65133 Datasheet
1Mb / 19P
[Old version datasheet]   5 V, 250 mA Dual Output Power Supply
TPS65133_15 TI-TPS65133_15_15 Datasheet
1Mb / 26P
[Old version datasheet]   TPS65133 짹5-V, 250-mA Dual-Output Power Supply
logo
Analog Devices
AD8279ARZ AD-AD8279ARZ Datasheet
513Kb / 24P
   Low Power, Wide Supply Range, Low Cost Difference Amplifiers,
REV. C
logo
Texas Instruments
TLV171 TI1-TLV171_16 Datasheet
1Mb / 38P
[Old version datasheet]   36-V, Single-Supply, Low-Power Operational Amplifiers for Cost-Sensitive Systems
TLV171 TI1-TLV171 Datasheet
1Mb / 40P
[Old version datasheet]   36-V, Single-Supply, Low-Power Operational Amplifiers for Cost-Sensitive Systems
TLV172 TI1-TLV172 Datasheet
2Mb / 42P
[Old version datasheet]   36-V, Single-Supply, Low-Power Operational Amplifiers for Cost-Sensitive Systems
logo
Analog Devices
AD8223 AD-AD8223_16 Datasheet
414Kb / 21P
   Single-Supply, Low Cost Instrumentation Amplifier
logo
ON Semiconductor
NCP5504 ONSEMI-NCP5504_13 Datasheet
145Kb / 10P
   250 mA Dual Output Low Dropout Linear Regulator
April, 2013 ??Rev. 4
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


データシート ダウンロード

Go To PDF Page


リンク URL




プライバシーポリシー
ALLDATASHEET.JP
ALLDATASHEETはお客様のビジネスに役立ちますか?  [ DONATE ] 

Alldatasheetは   |   広告   |   お問い合わせ   |   プライバシーポリシー   |   リンク交換   |   メーカーリスト
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