AD8542 Datasheet PDF - Analog Devices
| Part Number | AD8542 | |
| Description | CMOS Rail-to-Rail General-Purpose Amplifiers | |
| Manufacturers | Analog Devices | |
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CMOS Rail-to-Rail General-Purpose
Amplifiers
AD8541/AD8542/AD8544
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 μA 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
OUT A 1 AD8541 5 V+
V– 2
+IN A 3
4 –IN A
Figure 1. 5-Lead SC70 and 5-Lead SOT-23
(KS and RJ Suffixes)
NC 1 AD8541 8 NC
–IN A 2
7 V+
+IN A 3
6 OUT A
V– 4
5 NC
NC = NO CONNECT
Figure 2. 8-Lead SOIC
(R Suffix)
OUT A 1
–IN A 2
AD8542 8 V+
7 OUT B
+IN A 3
V– 4
6 –IN B
5 +IN B
Figure 3. 8-Lead SOIC, 8-Lead MSOP, and 8-Lead TSSOP
(R, RM, and RU Suffixes)
OUT A 1
–IN A 2
+IN A 3
V+ 4
+IN B 5
–IN B 6
OUT B 7
AD8544
14 OUT D
13 –IN D
12 +IN D
11 V–
10 +IN C
9 –IN C
8 OUT C
Figure 4. 14-Lead SOIC and 14-Lead TSSOP
(R and RU Suffixes)
Rev. G
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2008–2011 Analog Devices, Inc. All rights reserved.
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VS = 5.0 V, VCM = 2.5 V, TA = 25°C, unless otherwise noted.
Table 3.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Input Bias Current
Symbol
VOS
IB
Input Offset Current
IOS
Input Voltage Range
Common-Mode Rejection Ratio
Large Signal Voltage Gain
CMRR
AVO
Offset Voltage Drift
Bias Current Drift
Offset Current Drift
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Output Current
Closed-Loop Output Impedance
POWER SUPPLY
Power Supply Rejection Ratio
Supply Current/Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Full Power Bandwidth
Settling Time
Gain Bandwidth Product
Phase Margin
NOISE PERFORMANCE
Voltage Noise Density
Current Noise Density
ΔVOS/ΔT
ΔIB/ΔT
ΔIOS/ΔT
VOH
VOL
IOUT
ISC
ZOUT
PSRR
ISY
SR
BWP
tS
GBP
ΦM
en
en
in
Conditions
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +85°C
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +85°C
−40°C ≤ TA ≤ +125°C
VCM = 0 V to 5 V
−40°C ≤ TA ≤ +125°C
RL = 100 kΩ, VO = 0.5 V to 2.2 V
−40°C ≤ TA ≤ +85°C
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +85°C
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
IL = 1 mA
−40°C ≤ TA ≤ +125°C
IL = 1 mA
−40°C ≤ TA ≤ +125°C
VOUT = VS − 1 V
f = 200 kHz, AV = 1
VS = 2.5 V to 6 V
−40°C ≤ TA ≤ +125°C
VO = 0 V
−40°C ≤ TA ≤ +125°C
RL = 100 kΩ, CL = 200 pF
1% distortion
To 0.1% (1 V step)
f = 1 kHz
f = 10 kHz
AD8541/AD8542/AD8544
Min Typ Max Unit
1 6 mV
7 mV
4 60 pA
100 pA
1000 pA
0.1 30
pA
50 pA
500 pA
0 5V
40 48
dB
38 dB
20 40
V/mV
10 V/mV
2 V/mV
4 μV/°C
100 fA/°C
2000
fA/°C
25 fA/°C
4.9
4.875
4.965
25
30
±60
45
100
125
V
V
mV
mV
mA
mA
Ω
65 76
dB
60 dB
45 65 μA
85 μA
0.45 0.92
70
6
1000
67
V/μs
kHz
μs
kHz
Degrees
42 nV/√Hz
38 nV/√Hz
<0.1 pA/√Hz
Rev. G | Page 5 of 20
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