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AD8544WARZ-R7

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
CMOS Rail-to-Rail General-Purpose
Amplifiers
AD8541/AD8542/AD8544
Rev. G
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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
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Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2008–2011 Analog Devices, Inc. All rights reserved.
FEATURES
Single-supply operation: 2.7 V to 5.5 V
Low supply current: 45 μA/amplifier
Wide bandwidth: 1 MHz
No phase reversal
Low input currents: 4 pA
Unity gain stable
Rail-to-rail input and output
Qualified for automotive applications
APPLICATIONS
ASIC input or output amplifiers
Sensor interfaces
Piezoelectric transducer amplifiers
Medical instrumentation
Mobile communications
Audio outputs
Portable systems
GENERAL DESCRIPTION
The AD8541/AD8542/AD8544 are single, dual, and quad rail-
to-rail input and output, single-supply amplifiers featuring very
low supply current and 1 MHz bandwidth. All are guaranteed to
operate from a 2.7 V single supply as well as a 5 V supply. These
parts provide 1 MHz bandwidth at a low current consumption
of 45 µA per amplifier.
Very low input bias currents enable the AD8541/AD8542/AD8544
to be used for integrators, photodiode amplifiers, piezoelectric
sensors, and other applications with high source impedance.
The supply current is only 45 A per amplifier, ideal for battery
operation.
Rail-to-rail inputs and outputs are useful to designers buffering
ASICs in single-supply systems. The AD8541/AD8542/AD8544
are optimized to maintain high gains at lower supply voltages,
making them useful for active filters and gain stages.
The AD8541/AD8542/AD8544 are specified over the extended
industrial temperature range (–40°C to +125°C). The AD8541
is available in 5-lead SOT-23, 5-lead SC70, and 8-lead SOIC
packages. The AD8542 is available in 8-lead SOIC, 8-lead MSOP,
and 8-lead TSSOP surface-mount packages. The AD8544 is
available in 14-lead narrow SOIC and 14-lead TSSOP surface-
mount packages. All MSOP, SC70, and SOT versions are available
in tape and reel only. See the Ordering Guide for automotive
models.
PIN CONFIGURATIONS
1
2
3
5
4
–IN A
+IN A
V+
OUT A
AD8541
V–
0
0935-001
Figure 1. 5-Lead SC70 and 5-Lead SOT-23
(KS and RJ Suffixes)
NC
–IN A
+IN A
V–
V+
OUT A
NC
NC
1
2
3
4
8
7
6
5
AD8541
NC = NO CONNECT
00935-002
Figure 2. 8-Lead SOIC
(R Suffix)
AD8542
1
2
3
4
8
7
6
5
OUT A
–IN A
+IN A
V–
+IN B
–IN B
OUT B
V+
00935-003
Figure 3. 8-Lead SOIC, 8-Lead MSOP, and 8-Lead TSSOP
(R, RM, and RU Suffixes)
AD8544
1
2
3
4
14
13
12
11
O
UT A
–IN A
+IN A
V+
V–
+IN D
–IN D
OUT D
5
6
7
10
9
8
+IN B
–IN B
O
UT B
OUT C
–IN C
+IN C
0
0935-004
Figure 4. 14-Lead SOIC and 14-Lead TSSOP
(R and RU Suffixes)
AD8541/AD8542/AD8544
Rev. G | Page 2 of 20
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description......................................................................... 1
Pin Configurations ........................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Characteristics............................................................. 3
Absolute Maximum Ratings............................................................ 6
Thermal Resistance ...................................................................... 6
ESD Caution.................................................................................. 6
Typical Performance Characteristics ............................................. 7
Theory of Operation ...................................................................... 13
Notes on the AD854x Amplifiers............................................. 13
Applications..................................................................................... 14
Notch Filter ................................................................................. 14
Comparator Function................................................................ 14
Photodiode Application ............................................................ 15
Outline Dimensions ....................................................................... 16
Ordering Guide .......................................................................... 19
Automotive Products................................................................. 19
REVISION HISTORY
6/11—Rev. F to Rev. G
Changes to Features Section and General Description
Section................................................................................................ 1
Changes to Table 5............................................................................ 6
Updated Outline Dimensions....................................................... 16
Changes to Ordering Guide .......................................................... 19
Added Automotive Products Section .......................................... 19
1/08—Rev. E to Rev. F
Inserted Figure 21; Renumbered Sequentially.............................. 9
Changes to Figure 22 Caption......................................................... 9
Changes to Notch Filter Section, Figure 35, Figure 36, and
Figure 37 .......................................................................................... 13
Updated Outline Dimensions....................................................... 16
1/07—Rev. D to Rev. E
Updated Format..................................................................Universal
Changes to Photodiode Application Section.............................. 14
Changes to Ordering Guide.......................................................... 17
8/04—Rev. C to Rev. D
Changes to Ordering Guide.............................................................5
Changes to Figure 3........................................................................ 10
Updated Outline Dimensions....................................................... 12
1/03—Rev. B to Rev. C
Updated Format..................................................................Universal
Changes to General Description .....................................................1
Changes to Ordering Guide.............................................................5
Changes to Outline Dimensions .................................................. 12
AD8541/AD8542/AD8544
Rev. G | Page 3 of 20
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
V
S
= 2.7 V, V
CM
= 1.35 V, T
A
= 25°C, unless otherwise noted.
Table 1.
Parameter Symbol Conditions Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage V
OS
1 6 mV
−40°C ≤ T
A
≤ +125°C 7 mV
Input Bias Current I
B
4 60 pA
−40°C ≤ T
A
≤ +85°C 100 pA
−40°C ≤ T
A
≤ +125°C 1000 pA
Input Offset Current I
OS
0.1 30 pA
−40°C ≤ T
A
≤ +85°C 50 pA
−40°C ≤ T
A
≤ +125°C 500 pA
Input Voltage Range 0 2.7 V
Common-Mode Rejection Ratio CMRR V
CM
= 0 V to 2.7 V 40 45 dB
−40°C ≤ T
A
≤ +125°C 38 dB
Large Signal Voltage Gain A
VO
R
L
= 100 kΩ, V
O
= 0.5 V to 2.2 V 100 500 V/mV
−40°C ≤ T
A
≤ +85°C 50 V/mV
−40°C ≤ T
A
≤ +125°C 2 V/mV
Offset Voltage Drift ∆V
OS
/∆T −40°C ≤ T
A
≤ +125°C 4 µV/°C
Bias Current Drift ∆I
B
/∆T −40°C ≤ T
A
≤ +85°C 100 fA/°C
−40°C ≤ T
A
≤ +125°C 2000 fA/°C
Offset Current Drift ∆I
OS
/∆T −40°C ≤ T
A
≤ +125°C 25 fA/°C
OUTPUT CHARACTERISTICS
Output Voltage High V
OH
I
L
= 1 mA 2.575 2.65 V
−40°C ≤ T
A
≤ +125°C 2.550 V
Output Voltage Low V
OL
I
L
= 1 mA 35 100 mV
−40°C ≤ T
A
≤ +125°C 125 mV
Output Current I
OUT
V
OUT
= V
S
− 1 V 15 mA
I
SC
±20 mA
Closed-Loop Output Impedance Z
OUT
f = 200 kHz, A
V
= 1 50 Ω
POWER SUPPLY
Power Supply Rejection Ratio PSRR V
S
= 2.5 V to 6 V 65 76 dB
−40°C ≤ T
A
≤ +125°C 60 dB
Supply Current/Amplifier I
SY
V
O
= 0 V 38 55 µA
−40°C ≤ T
A
≤ +125°C 75 µA
DYNAMIC PERFORMANCE
Slew Rate SR R
L
= 100 kΩ 0.4 0.75 V/µs
Settling Time t
S
To 0.1% (1 V step) 5 µs
Gain Bandwidth Product GBP 980 kHz
Phase Margin
Φ
M
63 Degrees
NOISE PERFORMANCE
Voltage Noise Density e
n
f = 1 kHz 40 nV/√Hz
e
n
f = 10 kHz 38 nV/√Hz
Current Noise Density i
n
<0.1 pA/√Hz
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

AD8544WARZ-R7

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Manufacturer:
Analog Devices Inc.
Description:
Operational Amplifiers - Op Amps Gen-Purp CMOS Quad RR
Lifecycle:
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