AD AD8538AUJZ-R2 Low power, precision, auto-zero op amp Datasheet

Low Power, Precision, Auto-Zero Op Amps
AD8538/AD8539
Mobile communications
Portable instrumentation
Battery-powered devices
Sensor interfaces
Temperature measurement
Electronic scales
GENERAL DESCRIPTION
The AD8538/AD8539 are very high precision amplifiers featuring
extremely low offset voltage, low input bias current, and low power
consumption. The supply current is less than 215 μA maximujm
per amplifier at 5.0 V. Operation is fully specified from 2.7 V to
5.0 V single supply (±1.35 V to ±2.5 V dual supply).
The AD8538/AD8539 operate at very low power making these
amplifiers ideal for battery-powered devices and portable
equipment.
The AD8538/AD8539 are specified over the extended industrial
temperature range (−40°C to +125°C). The AD8538 amplifier is
available in 5-lead TSOT-23, and 8-lead, narrow body SOIC
packages, and the AD8539 amplifier is available in 8-lead, narrow
body SOIC and 8-lead MSOP.
OUT
1
5
V+
4
–IN
V–
2
+IN
3
TOP VIEW
(Not to Scale)
06741-002
AD8538
Figure 1. 5-Lead TSOT-23 (UJ-5)
NC
1
−IN 2
AD8538
8
NC
7
V+
+IN 3
V−
6 OUT
TOP VIEW
4 (Not to Scale) 5 NC
NC = NO CONNECT
06741-001
APPLICATIONS
PIN CONFIGURATIONS
Figure 2. 8-Lead SOIC_N (R-8)
OUT A 1
–IN A 2
AD8539
+IN A 3
TOP VIEW
V– 4 (Not to Scale)
8
V+
7
OUT B
6
–IN B
5
+IN B
06741-033
Low offset voltage: 13 μV maximum
Input offset drift: 0.03 μV/°C
Single-supply operation: 2.7 V to 5.5 V
High gain, CMRR, and PSRR
Low input bias current: 25 pA
Low supply current: 180 μA
Figure 3. 8-Lead SOIC_N (R-8)
OUT A 1
–IN A 2
+IN A 3
V– 4
AD8539
TOP VIEW
(Not to Scale)
8
V+
7
OUT B
6
–IN B
5
+IN B
06741-034
FEATURES
Figure 4. 8-Lead MSOP (RM-8)
Rev. A
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.
Trademarks and registered trademarks are the property of their respective owners.
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 ©2005–2007 Analog Devices, Inc. All rights reserved.
AD8538/AD8539
TABLE OF CONTENTS
Features .............................................................................................. 1
Absolute Maximum Ratings ............................................................7
Applications....................................................................................... 1
Thermal Resistance .......................................................................7
General Description ......................................................................... 1
ESD Caution...................................................................................7
Pin Configurations ........................................................................... 1
Typical Performance Characteristics ..............................................8
Revision History ............................................................................... 2
AD8538 Characteristics................................................................8
Specifications..................................................................................... 3
AD8539 Characteristics............................................................. 14
AD8538 Electrical Specifications ............................................... 3
Outline Dimensions ....................................................................... 20
AD8539 Electrical Specifications ............................................... 5
Ordering Guide .......................................................................... 21
REVISION HISTORY
5/07—Rev. 0 to Rev. A
Added AD8539 ...................................................................Universal
Changes to Specifications Section.................................................. 3
Added Table 3, Renumbered Tables Sequentially ........................ 5
Added Table 4, Renumbered Tables Sequentially ........................ 6
Changes to Thermal Resistance Section........................................ 7
Added Figure 32 and Figure 33..................................................... 13
Added AD8539 Characteristics Section, Renumbered Figures
Sequentially ..................................................................................... 14
Updated Outline Dimensions....................................................... 20
Changes to Ordering Guide .......................................................... 21
10/05—Revision 0: Initial Version
Rev. A | Page 2 of 24
AD8538/AD8539
SPECIFICATIONS
AD8538 ELECTRICAL SPECIFICATIONS
@ VS = 5.0 V, VCM = 2.5 V, VO = 2.5 V, TA = 25°C, unless otherwise specified.
Table 1.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Symbol
Conditions
Min
VOS
Typ
Max
Unit
5
13
30
25
100
1.0
50
150
5
μV
μV
pA
pA
nA
pA
pA
V
dB
dB
dB
dB
μV/°C
−40°C ≤ TA ≤ +125°C
Input Bias Current
IB
15
35
0.7
20
−40°C ≤ TA ≤ +85°C
−40°C ≤ TA ≤ +125°C
Input Offset Current
IOS
−40°C ≤ TA ≤ +125°C
Input Voltage Range
Common-Mode Rejection Ratio
CMRR
Large Signal Voltage Gain
AVO
Offset Voltage Drift
ΔVOS/ΔT
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Short-Circuit Limit
POWER SUPPLY
Power Supply Rejection Ratio
Supply Current/Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Settling Time 0.01%
Overload Recovery Time
Gain Bandwidth Product
Phase Margin
NOISE PERFORMANCE
Voltage Noise
Voltage Noise Density
VOH
VOL
VCM = 0 V to 5 V
−40°C ≤ TA ≤ +125°C, VCM = 0.2 V to 4.8 V
RL = 10 kΩ, VO = 0.1 V to 4.9 V
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
0
115
100
115
110
RL = 100 kΩ to ground
−40°C ≤ TA ≤ +125°C, RL = 100 kΩ to ground
RL = 10 kΩ to ground
−40°C ≤ TA ≤ +125°C, RL = 10 kΩ to ground
RL = 100 kΩ to V+
−40°C ≤ TA ≤ +125°C, RL = 100 kΩ to V+
RL = 10 kΩ to V+
−40°C ≤ TA ≤ +125°C, RL = 10 kΩ to V+
4.99
4.98
4.95
4.94
VS = 2.7 V to 5.0 V
−40°C ≤ TA ≤ +125°C
IO = 0
−40°C ≤ TA ≤ +125°C
105
100
ISY
SR
tS
RL =10 kΩ
G = ±1, 2 V step, CL = 20 pF, RL = 1 kΩ
GBP
ØM
en p-p
en
0.1
4.998
4.970
1.9
2.8
17
20
±25
ISC
PSRR
150
135
141
135
0.03
125
125
150
190
5
7
20
30
180
215
V
V
V
V
mV
mV
mV
mV
mA
dB
dB
μA
μA
RL = 10 kΩ, RL = 100 kΩ, CL = 20 pF
0.4
10
0.05
430
65
V/μs
μs
ms
kHz
Degrees
f = 0.1 Hz to 10 Hz
f = 1 kHz
2.0
50
μV p-p
nV/√Hz
Rev. A | Page 3 of 24
AD8538/AD8539
@ VS = 2.7 V, VCM = 1.35 V, VO = 1.35 V, TA = 25°C, unless otherwise specified.
Table 2.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Symbol
Conditions
Min
VOS
Typ
Max
Unit
5
13
30
25
100
1.0
50
150
2.7
μV
μV
pA
pA
nA
pA
pA
V
dB
dB
dB
dB
μV/°C
−40°C ≤ TA ≤ +125°C
Input Bias Current
IB
15
35
0.7
20
−40°C ≤ TA ≤ +85°C
−40°C ≤ TA ≤ +125°C
Input Offset Current
IOS
−40°C ≤ TA ≤ +125°C
Input Voltage Range
Common-Mode Rejection Ratio
CMRR
Large Signal Voltage Gain
AVO
Offset Voltage Drift
ΔVOS/ΔT
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Short-Circuit Limit
POWER SUPPLY
Power Supply Rejection Ratio
Supply Current/Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Settling Time 0.01%
Overload Recovery Time
Gain Bandwidth Product
Phase Margin
NOISE PERFORMANCE
Voltage Noise
Voltage Noise Density
VOH
VOL
VCM = 0 V to 2.5 V
−40°C ≤ TA ≤ +125°C
RL = 10 kΩ, VO = 0.1 V to 1.7 V
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
0
110
100
110
105
RL = 100 kΩ to ground
−40°C ≤ TA ≤ +125°C, RL = 100 kΩ to ground
RL = 10 kΩ to ground
−40°C ≤ TA ≤ +125°C, RL = 10 kΩ to ground
RL = 100 kΩ to V+
−40°C ≤ TA ≤ +125°C, RL = 100 kΩ to V+
RL = 10 kΩ to V+
−40°C ≤ TA ≤ +125°C, RL = 10 kΩ to V+
2.68
2.68
2.67
2.66
VS = 2.7 V to 5.5 V
−40°C ≤ TA ≤ +125°C
IO = 0
−40°C ≤ TA ≤ +125°C
105
100
ISY
SR
tS
RL = 10 kΩ
G = ±1, 1 V step, CL = 20 pF, RL = 1 kΩ
GBP
ØM
en p-p
en
0.1
2.698
2.68
1.7
2.4
14
20
±8
ISC
PSRR
140
135
140
135
0.03
125
125
150
190
5
5
20
25
180
215
V
V
V
V
mV
mV
mV
mV
mA
dB
dB
μA
μA
RL = 10 kΩ, RL = 100 kΩ, CL = 20 pF
0.35
5
0.05
430
65
V/μs
μs
ms
kHz
Degrees
f = 0.1 Hz to 10 Hz
f = 1 kHz
2.0
50
μV p-p
nV/√Hz
Rev. A | Page 4 of 24
AD8538/AD8539
AD8539 ELECTRICAL SPECIFICATIONS
@ VS = 5.0 V, VCM = 2.5 V, VO = 2.5 V, TA = 25°C, unless otherwise specified.
Table 3.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Symbol
Conditions
Min
VOS
Typ
Max
Unit
5
15
30
60
125
1.0
70
400
5
4.8
μV
μV
pA
pA
nA
pA
pA
V
V
dB
dB
dB
dB
μV/°C
−40°C ≤ TA ≤ +125°C
Input Bias Current
IB
15
35
0.7
20
−40°C ≤ TA ≤ +85°C
−40°C ≤ TA ≤ +125°C
Input Offset Current
IOS
−40°C ≤ TA ≤ +125°C
Input Voltage Range
Common-Mode Rejection Ratio
CMRR
Large Signal Voltage Gain
AVO
Offset Voltage Drift
ΔVOS/ΔT
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Short-Circuit Limit
POWER SUPPLY
Power Supply Rejection Ratio
Supply Current/Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Settling Time 0.01%
Overload Recovery Time
Gain Bandwidth Product
Phase Margin
NOISE PERFORMANCE
Voltage Noise
Voltage Noise Density
VOH
VOL
−40°C ≤ TA ≤ +125°C
VCM = 0 V to 5 V
−40°C ≤ TA ≤ +125°C, VCM = 0.2 V to 4.8 V
RL = 10 kΩ, VO = 0.1 V to 4.9 V
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
0
0.2
115
100
110
110
RL = 100 kΩ to ground
−40°C ≤ TA ≤ +125°C, RL = 100 kΩ to ground
RL = 10 kΩ to ground
−40°C ≤ TA ≤ +125°C, RL = 10 kΩ to ground
RL = 100 kΩ to V+
−40°C ≤ TA ≤ +125°C, RL = 100 kΩ to V+
RL = 10 kΩ to V+
−40°C ≤ TA ≤ +125°C, RL = 10 kΩ to V+
4.99
4.98
4.95
4.94
VS = 2.7 V to 5.0 V
−40°C ≤ TA ≤ +125°C
IO = 0
−40°C ≤ TA ≤ +125°C
105
100
ISY
SR
tS
RL =10 kΩ
G = ±1, 2 V step, CL = 20 pF, RL = 1 kΩ
GBP
ØM
en p-p
en
0.1
4.994
4.97
5
6
20
24
±25
ISC
PSRR
135
130
130
125
0.03
125
125
170
7
8
25
30
210
225
V
V
V
V
mV
mV
mV
mV
mA
dB
dB
μA
μA
RL = 10 kΩ, RL = 100 kΩ, CL = 20 pF
0.4
10
0.05
430
65
V/μs
μs
ms
kHz
Degrees
f = 0.1 Hz to 10 Hz
f = 1 kHz
1.2
52
μV p-p
nV/√Hz
Rev. A | Page 5 of 24
AD8538/AD8539
@ VS = 2.7 V, VCM = 1.35 V, VO = 1.35 V, TA = 25°C, unless otherwise specified.
Table 4.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Symbol
Conditions
Min
VOS
Typ
Max
Unit
5
16
30
25
125
1.0
50
300
2.7
2.5
μV
μV
pA
pA
nA
pA
pA
V
−40°C ≤ TA ≤ +125°C
Input Bias Current
IB
15
35
0.7
20
−40°C ≤ TA ≤ +85°C
−40°C ≤ TA ≤ +125°C
Input Offset Current
IOS
−40°C ≤ TA ≤ +125°C
Input Voltage Range
Common-Mode Rejection Ratio
CMRR
Large Signal Voltage Gain
AVO
Offset Voltage Drift
ΔVOS/ΔT
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Short-Circuit Limit
POWER SUPPLY
Power Supply Rejection Ratio
Supply Current/Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Settling Time 0.01%
Overload Recovery Time
Gain Bandwidth Product
Phase Margin
NOISE PERFORMANCE
Voltage Noise
Voltage Noise Density
VOH
VOL
−40°C ≤ TA ≤ +125°C
VCM = 0 V to 2.7 V
−40°C ≤ TA ≤ +125°C, VCM = 0.2 V to 2.5 V
RL = 10 kΩ, VO = 0.1 V to 2.6 V
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
0
0.2
110
100
110
105
RL = 100 kΩ to ground
−40°C ≤ TA ≤ +125°C, RL = 100 kΩ to ground
RL = 10 kΩ to ground
−40°C ≤ TA ≤ +125°C, RL = 10 kΩ to ground
RL = 100 kΩ to V+
−40°C ≤ TA ≤ +125°C, RL = 100 kΩ to V+
RL = 10 kΩ to V+
−40°C ≤ TA ≤ +125°C, RL = 10 kΩ to V+
2.68
2.68
2.67
2.66
VS = 2.7 V to 5.5 V
−40°C ≤ TA ≤ +125°C
IO = 0
−40°C ≤ TA ≤ +125°C
105
100
ISY
SR
tS
RL = 10 kΩ
G = ±1, 1 V step, CL = 20 pF, RL = ∞
GBP
ØM
en p-p
en
0.1
2.693
2.68
5
6
14
20
±8
ISC
PSRR
130
125
130
125
0.03
7
8
20
25
125
125
210
225
dB
dB
dB
dB
μV/°C
V
V
V
V
mV
mV
mV
mV
mA
dB
dB
μA
μA
RL = 10 kΩ, RL = 100 kΩ, CL = 20 pF
0.35
8
0.05
430
65
V/μs
μs
ms
kHz
Degrees
f = 0.1 Hz to 10 Hz
f = 1 kHz
2.0
55
μV p-p
nV/√Hz
Rev. A | Page 6 of 24
AD8538/AD8539
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
THERMAL RESISTANCE
Table 5.
Parameter
Supply Voltage
Input Voltage
Differential Input Voltage
Output Short-Circuit Duration to GND
Storage Temperature Range
Lead Temperature (Soldering, 60 sec)
Operating Temperature Range
Junction Temperature Range
Rating
+6 V
VSS − 0.3 V to VDD + 0.3 V
±6 V
Observe derating curve
–65°C to +150°C
300°C
–40°C to +125°C
−65°C to +150°C
θJA is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages.
Table 6. Thermal Characteristics
Package Type
5-Lead TSOT-23 (UJ-5)
8-Lead SOIC_N (R-8)
8-Lead MSOP (RM-8)
ESD CAUTION
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Absolute maximum ratings apply at 25°C, unless otherwise noted.
Rev. A | Page 7 of 24
θJA
207
125
145
θJC
61
43
45
Unit
°C/W
°C/W
°C/W
AD8538/AD8539
TYPICAL PERFORMANCE CHARACTERISTICS
AD8538 CHARACTERISTICS
AD8538 only, VSY = 5 V or ±2.5 V, unless otherwise noted.
400
VSY = 5V AND 2.7V
600
350
INPUT BIAS CURRENT (pA)
NUMBER OF AMPLIFIERS
700
VSY = 5V
0V < VCM < 5V
TA = 25°C
300
250
200
150
100
0
–10.0 –8.4 –6.8 –5.2 –3.6 –2.0 –0.4 1.2 2.8 4.4 6.0 7.6 9.2
400
300
200
100
06741-003
50
500
06741-006
450
0
25
45
65
Figure 5. AD8538 Input Offset Voltage Distribution
160
VSY = 5V
–40°C < TA < +125°C
TA = 25°C
140
SUPPLY CURRENT (µA)
8
6
4
0.012 0.024 0.036 0.048
100
80
60
40
20
06741-004
2
120
0
0.060 0.072 0.084 0.096
0
1
TCVOS (µV/°C)
SUPPLY CURRENT (µA)
6
4
2
0
–2
–4
VSY = 5V
150
VSY = 2.7V
100
50
–6
06741-005
INPUT OFFSET VOLTAGE (µV)
5
4
200
VSY = 5V
TA = 25°C
8
3
Figure 9. AD8538 Supply Current vs. Supply Voltage
Figure 6. AD8538 Input Offset Voltage Drift Distribution
10
2
SUPPLY VOLTAGE (V)
–8
–10
0
1
2
3
4
0
–40
5
INPUT COMMON-MODE VOLTAGE (V)
06741-008
NUMBER OF AMPLIFIERS
10
0
125
Figure 8. AD8538 Input Bias Current vs. Temperature
12
0
105
06741-007
14
85
TEMPERATURE (°C)
INPUT OFFSET VOLTAGE (µV)
10
60
110
TEMPERATURE (°C)
Figure 7. AD8538 Input Offset Voltage vs. Input Common-Mode Voltage
Rev. A | Page 8 of 24
Figure 10. AD8538 Supply Current vs. Temperature
AD8538/AD8539
70
50
OPEN-LOOP GAIN (dB)
VSY – VOH
100
VOL
10
SOURCE
1
30
0.01
0.001
45
20
ФM
10
0
0
SINK
0.1
90
40
–10
0.01
0.1
1
–20
1k
10
VSY = ±2.5V AND ±1.35V
RL = 100kΩ
CL = 20pF
10k
120
30
VSY = 5V AND 2.7V
TA = 25°C
100
VSY – VOH
25
CMRR (dB)
80
20
VOL
15
60
40
10
–25
–10
5
20
35
50
65
80
95
110
0
100
125
06741-013
20
5
06741-010
OUTPUT SATURATION VOLTAGE (mV)
Figure 14. AD8538 Open-Loop Gain and Phase vs. Frequency
VSY = 5V
RL = 10kΩ
0
–40
1k
Figure 12. AD8538 Output Saturation Voltage vs. Temperature
60
1M
VSY = ±2.5V AND ±1.35V
TA = 25°C
80
AV = 100
+PSRR
AV = 10
60
–PSRR
40
AV = 1
20
–20
1k
10k
100k
0
100
1M
06741-014
0
100
VSY = 5V AND 2.7V
CL = 20pF
RL = 2kΩ
PSRR (dB)
20
100k
Figure 15. AD8538 CMRR vs. Frequency
06741-011
40
10k
FREQUENCY (Hz)
TEMPERATURE (°C)
CLOSED-LOOP GAIN (dB)
–45
1M
100k
FREQUENCY (Hz)
LOAD CURRENT (mA)
Figure 11. AD8538 Output Saturation Voltage vs. Load Current
35
OPEN-LOOP PHASE SHIFT (Degrees)
135
60
1000
06741-012
VSY = 5V
TA = 25°C
06741-009
OUTPUT SATURATION VOLTAGE (mV)
10000
1k
10k
100k
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 16. AD8538 PSRR vs. Frequency
Figure 13. AD8538 Closed-Loop Gain vs. Frequency
Rev. A | Page 9 of 24
1M
AD8538/AD8539
1000
VOLTAGE (1V/DIV)
AV = 100
100
OUTPUT IMPEDANCE (Ω)
VSY = 5V
AV = 1
CL = 300pF
RL = 10kΩ
VSY = 5V AND 2.7V
AV = 10
10
AV = 1
1
06741-022
0.01
100
06741-017
0.1
1k
10k
100k
1M
TIME (4µs/DIV)
FREQUENCY (Hz)
Figure 20. AD8538 Large Signal Transient Response
Figure 17. AD8538 Closed-Loop Output Impedance vs. Frequency
VSY = 5V
TA = 25°C
RL = 2kΩ
VSY = 5V
AV = –50
VIN (mV)
50
100
40
0
30
OS+
0
1
10
100
06741-018
OS–
10
0
VOUT (V)
20
06741-015
SMALL SIGNAL OVERSHOOT (%)
60
–2.5
1000
TIME (10µs/DIV)
LOAD CAPACITANCE (pF)
Figure 21. AD8538 Positive Overload Recovery
Figure 18. AD8538 Small Signal Overshoot vs. Load Capacitance
VSY = 5V AND 2.7V
AV = 1
CL = 300pF
RL = 2kΩ
VSY = 5V
AV = –50
VOLTAGE (50mV/DIV)
VIN (mV)
0
–100
VOUT (V)
2.5
06741-019
06741-016
0
TIME (10µs/DIV)
TIME (4µs/DIV)
Figure 22. AD8538 Negative Overload Recovery
Figure 19. AD8538 Small Signal Transient Response
Rev. A | Page 10 of 24
AD8538/AD8539
VSY = 5V
TA = 25°C
100
10
10
100
1k
10k
VOUT
VSY = 5V
AV = 1
VIN = 6V p-p
RL = 10kΩ
06741-023
VOLTAGE (1V/DIV)
VIN
06741-021
VOLTAGE NOISE DENSITY (nV/√Hz)
1000
TIME (200µs/DIV)
FREQUENCY (Hz)
Figure 25. AD8538 No Phase Reversal
Figure 23. AD8538 Voltage Noise Density
06741-020
VOLTAGE (500nV/DIV)
VSY = 5V AND 2.7V
TIME (1s/DIV)
Figure 24. AD8538 0.1 Hz to 10 Hz Input Voltage Noise
Rev. A | Page 11 of 24
AD8538/AD8539
VSY = 2.7 V or ±1.35 V, AD8538 only, unless otherwise noted.
10000
120
100
80
60
40
20
0
–10.0 –8.4 –6.8 –5.2 –3.6 –2.0 –0.4 1.2 2.8 4.4 6.0 7.6 9.2
06741-024
NUMBER OF AMPLIFIERS
140
VSY = 2.7V
TA = 25°C
1000
100
10
SOURCE
SINK
1
06741-027
160
OUTPUT SATURATION VOLTAGE (mV)
VSY = 2.7V
0V < VCM < 2.7V
TA = 25°C
0.1
0.001
0.01
Figure 29. AD8538 Output Saturation Voltage vs. Load Current
35
30
NUMBER OF AMPLIFIERS
OUTPUT SATURATION VOLTAGE (mV)
VSY = 2.7V
–40°C < TA < +125°C
25
20
15
10
0
06741-025
5
0
VSY = 2.7V
RL = 10kΩ
25
VSY = VOH
20
15
VOL
10
5
0
–40
0.012 0.024 0.036 0.048 0.060 0.072 0.084 0.096
06741-028
Figure 26. AD8538 Input Offset Voltage Distribution
30
–25
–10
TCVOS (µV/°C)
35
50
65
80
95
110
125
80
SMALL SIGNAL OVERSHOOT (%)
VSY = 2.7V
8 TA = 25°C
6
4
2
0
–2
–4
–6
–8
0.5
1.0
1.5
2.0
VSY = 2.7V
TA = 25°C
70 RL = 2kΩ
60
50
40
30
20
OS+
10
06741-026
INPUT OFFSET VOLTAGE (µV)
20
Figure 30. AD8538 Output Saturation Voltage vs. Temperature
10
0
5
TEMPERATURE (°C)
Figure 27. AD8538 Input Offset Voltage Drift Distribution
–10
1
0.1
LOAD CURRENT (mA)
INPUT OFFSET VOLTAGE (µV)
0
2.5
06741-029
180
OS–
1
10
100
1000
LOAD CAPACITANCE (pF)
INPUT COMMON-MODE VOLTAGE (V)
Figure 28. AD8538 Input Offset Voltage vs. Input Common-Mode Voltage
Rev. A | Page 12 of 24
Figure 31. AD8538 Small Signal Overshoot vs. Load Capacitance
AD8538/AD8539
1000
VSY = 2.7V
TA = 25°C
100
10
10
TIME (4µs/DIV)
06741-032
06741-030
VOLTAGE (500mV/DIV)
VOLTAGE NOISE DENSITY (nV/√Hz)
VSY = 2.7V
AV = 1
CL = 100pF
RL = 10kΩ
100
1k
10k
FREQUENCY (Hz)
Figure 32. AD8538 Large Signal Transient Response
Figure 33. AD8538 Voltage Noise Density
Rev. A | Page 13 of 24
100k
AD8538/AD8539
AD8539 CHARACTERISTICS
AD8539 only, VS = 5 V or ±2.5 V, unless otherwise noted.
800
600
AD8539
VSY = 5V
100.0
INPUT BIAS CURRENT (pA)
700
NUMBER OF AMPLIFIERS
1000.0
AD8539
VSY = 5V
0 < VCM < 5V
TA = 25°C
500
400
300
200
10.0
1.0
0.1
0.01
06741-035
0
–10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 8 9 10
VOS (µV)
Figure 34. AD8539 Input Offset Voltage Distribution
25
45
65
85
TEMPERATURE (°C)
105
125
Figure 37. AD8539 Input Bias Current vs. Temperature
60
400
AD8539
VSY = ±2.5V
–40°C < VCM < 125°C
50
AD8539
VSY = 0V TO 5V
–40°C < TA < +125°C
350
+125°C
300
40
+85°C
+25°C
250
ISY (µA)
30
–40°C
200
150
20
100
10
50
0
0.016
0.032
0.048
0.064
TCVOS (µV)
0.080
0
06741-036
0
0.096
Figure 35. AD8539 Input Offset Voltage Drift Distribution
0.5
1.0
1.5
2.0
2.5
VSY (V)
3.0
3.5
4.0
4.5
5.0
Figure 38. AD8539 Supply Current vs. Supply Voltage
20
400
AD8539
VSY = 5V
0V < VCM < 5V
TA = 25°C
10
0
06741-039
NUMBER OF AMPLIFIERS
5
06741-038
100
AD8539
375
350
ISY (µA)
VOS (µV)
325
0
VSY = ±2.5V
300
275
–10
VSY = ±1.35V
250
0
1
2
3
VCM (V)
4
5
200
–40
06741-037
–20
Figure 36. AD8539 Input Offset Voltage vs. Input Common-Mode Voltage
Rev. A | Page 14 of 24
–25
–10
5
20
35
50
65
TEMPERATURE (°C)
80
95
110
Figure 39. AD8539 Supply Current vs. Temperature
125
06741-040
225
SOURCE, VS = ± 2.5V
1000
100
GAIN (Degrees)
SINK, VS = ± 1.35V
SOURCE, VS = ± 1.35V
SINK, VS = ± 2.5V
10
120
120
100
100
80
80
60
60
40
40
20
20
0
0
–20
–20
–40
–40
–60
1
–100
0.1
0.001
0.01
0.1
1
ILOAD (mA)
10
100
–120
1k
Figure 40. AD8539 Output Saturation Voltage vs. Load Current
30
–100
10k
100k
FREQUENCY (Hz)
–120
10M
1M
140
AD8539
VS = 5V
AD8539
VSY = ±2.5V
CHANNEL B
120
VDD - VOH, IL = 250µA, RL = 10kΩ
100
25
CMRR (dB)
CHANNEL A
20
VOL, IL = 250µA, RL = 10kΩ
15
10
80
60
40
VDD - VOH, IL = 25µA, RL = 100kΩ
5
–25
–10
5
20
35
50
65
TEMPERATURE (°C)
80
95
110
125
0
100
1k
10k
100k
FREQUENCY (Hz)
60
120
AD8539
VSY = ±2.5V
RL = 2kΩ
CL = 20pF
40
10M
Figure 44. AD8539 CMRR vs. Frequency
Figure 41. AD8539 Output Saturation Voltage vs. Temperature
AV = 100
1M
06741-045
20
VOL, IL = 25µA, RL = 100kΩ
0
–40
AD8539
VSY = ±2.5V
100
PSRR–
80
AV = 10
PSRR (dB)
20
AV = 1
0
PSRR+
60
40
20
–20
–40
100
1k
10k
100k
FREQUENCY (Hz)
1M
10M
–20
100
1k
10k
100k
FREQUENCY (Hz)
1M
Figure 45. AD8539 PSRR vs. Frequency
Figure 42. AD8539 Closed-Loop Gain vs. Frequency
Rev. A | Page 15 of 24
10M
06741-046
0
06741-043
CLOSED-LOOP GAIN (dB)
–80
Figure 43. AD8539 Open-Loop Gain and Phase vs. Frequency
06741-042
OUTPUT SATURATION VOLTAGE (mV)
35
–60
AD8539
VSY = ±2.5V
RL = 2kΩ
CL = 20pF
–80
06741-044
AD8539
06741-041
OUTPUT SATURATION VOLTAGE (mV)
10000
PHASE (Degrees)
AD8538/AD8539
AD8538/AD8539
1000
AD8539
VSY = 5V
AV = 1
CL = 300pF
RL = 10kΩ
AD8539
VSY = ±2.5V
900
800
VOLTAGE (1V/DIV)
700
ZOUT (Ω)
600
500
400
300
AV = 10
AV = 1
10k
100k
FREQUENCY (Hz)
1M
10M
TIME (4µs/DIV)
Figure 46. AD8539 Closed-Loop Output Impedance vs. Frequency
Figure 49. AD8539 Large Signal Transient Response
60
INPUT VOLTAGE (50mV/DIV)
30
OS+
20
OS–
0.05
4
3
INPUT VOLTAGE
0
2
–0.05
1
–0.10
0
–1
–0.15
OUTPUT VOLTAGE
–2
–0.20
10
100
CAPACITANCE (pF)
1k
–0.25
06741-048
1
–3
TIME (20µs/DIV)
Figure 50. AD8539 Positive Overload Recovery
Figure 47. AD8539 Small Signal Overshoot vs. Load Capacitance
INPUT VOLTAGE (50mV/DIV)
AD8539
VSY = 5V
AV = 1
CL = 300pF
RL = 2kΩ
06741-051
10
0.05
7.5
0
6.5
–0.05
INPUT VOLTAGE
AD8539
VSY = ±2.5V
AV = –50
–0.10
5.5
4.5
–0.15
3.5
–0.20
2.5
–0.25
1.5
OUTPUT VOLTAGE (5V/DIV)
OUTPUT VOLTAGE
TIME (2µs/DIV)
06741-049
–0.30
–0.35
Figure 48. AD8539 Small Signal Transient Response
0.5
TIME (20µs/DIV)
Figure 51. AD8539 Negative Overload Recovery
Rev. A | Page 16 of 24
–0.5
06741-052
OVERSHOOT (%)
AD8539
VSY = ±2.5V
AV = –50
0.10
40
VOLTAGE (50mV/DIV)
5
0.15
AD8539
VSY = ±2.5V
RL = 2kΩ
50
0
06741-050
1k
06741-047
100
0.01
100
OUTPUT VOLTAGE (1V/DIV)
AV = 100
200
AD8538/AD8539
VOLTAGE (2V/DIV)
INPUT VOLTAGE
1k
10k
FREQUENCY (Hz)
100k
OUTPUT
VOLTAGE
TIME (200µs/DIV)
Figure 52. AD8539 Voltage Noise Density
06741-055
100
10
100
Figure 54. AD8539 No Phase Reversal
0.8
0
AD8539
VSY = 5V
AV = 1M
AD8539
VSY = ±2.5V
–20
CHANNEL SEPARATION (dB)
0.6
0.4
0.2
0
–0.2
–0.4
–40
–60
–80
–100
–120
–0.8
–5
–4
–3
–2
–1
0
1
TIME (1s/DIV)
2
3
4
5
–160
100
1k
10k
FREQUENCY (Hz)
Figure 55. AD8539 Channel Separation vs. Frequency
Figure 53. AD8539 0.1 Hz to 10 Hz Input Voltage Noise
Rev. A | Page 17 of 24
100k
06741-056
–140
–0.6
06741-054
VOLTAGE (200mV/DIV)
AD8539
VSY = ±2.5V
AV = 1
RL = 10kΩ
AD8539
VSY = ±2.5V
06741-053
VOLTAGE NOISE DENSITY (nV Hz)
1k
AD8538/AD8539
VS = 2.7 V or ±1.35 V, TA = 25°C, AD8539 only, unless otherwise noted.
OUTPUT SATURATION VOLTAGE (mV)
300
250
200
150
100
50
25
VDD – VOH, RL = 10kΩ
20
VOL, RL = 10kΩ
15
10
VDD – VOH, RL = 100kΩ
5
VOL, RL = 100kΩ
0
–40
Figure 56. AD8539 Input Offset Voltage Distribution
–25
–10
5
20
35
50
65
80
TEMPERATURE (°C)
110
125
80
AD8539
VSY = ±1.35V
–40°C < TA < +125°C
40
AD8539
VSY = ±1.35V
RL = 2kΩ
70
35
60
OVERSHOOT (%)
30
25
20
15
50
40
OS+
30
20
10
OS–
10
5
0
0.016
0.032
0.048
0.064
TCVOS (µV)
0.080
0
06741-058
0
0.096
Figure 57. AD8539 Input Offset Voltage Drift Distribution
1
10
100
CAPACITANCE (pF)
10
AD8539
VSY = ±1.35V
AV = 1
CL = 300pF
RL = 10kΩ
VOLTAGE (500mV/DIV)
AD8539
VSY = 2.7V
0V < VCM < 2.7V
TA = 25°C
15
1k
Figure 60. AD8539 Small Signal Overshoot vs. Load Capacitance
20
5
VOS (µV)
95
Figure 59. AD8539 Output Saturation Voltage vs. Temperature
45
NUMBER OF AMPLIFIERS
30
06741-057
0
–10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 8 9 10
VOS
AD8539
VSY = 2.7V
0
–5
–10
0.3
0.6
0.9
1.2
1.5
VCM (V)
1.8
2.1
2.4
2.7
TIME (4µs/DIV)
Figure 58. AD8539 Input Offset Voltage vs. Input Common-Mode Voltage
Rev. A | Page 18 of 24
Figure 61. AD8539 Large Signal Transient Response
06741-062
0
06741-059
–15
–20
06741-061
NUMBER OF AMPLIFIERS
35
AD8539
VSY = 2.7V
0V < VCM < 2.7V
TA = 25°C
06741-060
350
AD8538/AD8539
0
AD8539
VSY = ±1.35V
AD8539
VSY = ±1.35V
CHANNEL SEPARATION (dB)
–20
100
–40
–60
–80
–100
–120
10
100
1k
10k
FREQUENCY (Hz)
100k
–160
100
Figure 62. AD8539 Voltage Noise Density
1k
10k
FREQUENCY (Hz)
Figure 63. AD8539 Channel Separation vs. Frequency
Rev. A | Page 19 of 24
100k
06741-064
–140
06741-063
VOLTAGE NOISE DENSITY (nV/ Hz)
1k
AD8538/AD8539
OUTLINE DIMENSIONS
2.90 BSC
5
4
2.80 BSC
1.60 BSC
1
2
3
PIN 1
0.95 BSC
1.90
BSC
*0.90
0.87
0.84
*1.00 MAX
0.10 MAX
0.50
0.30
0.20
0.08
8°
4°
0°
SEATING
PLANE
0.60
0.45
0.30
*COMPLIANT TO JEDEC STANDARDS MO-193-AB WITH
THE EXCEPTION OF PACKAGE HEIGHT AND THICKNESS.
Figure 64. 5-Lead Thin Small Outline Transistor Package [TSOT-23]
(UJ-5)
Dimensions shown in millimeters
5.00 (0.1968)
4.80 (0.1890)
8
1
5
4
1.27 (0.0500)
BSC
0.25 (0.0098)
0.10 (0.0040)
COPLANARITY
0.10
SEATING
PLANE
6.20 (0.2441)
5.80 (0.2284)
1.75 (0.0688)
1.35 (0.0532)
0.51 (0.0201)
0.31 (0.0122)
0.50 (0.0196)
0.25 (0.0099)
45°
8°
0°
0.25 (0.0098)
0.17 (0.0067)
1.27 (0.0500)
0.40 (0.0157)
COMPLIANT TO JEDEC STANDARDS MS-012-A A
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
Figure 65. 8-Lead Standard Small Outline Package [SOIC_N]
Narrow Body
(R-8)
Dimensions shown in millimeters and (inches)
Rev. A | Page 20 of 24
012407-A
4.00 (0.1574)
3.80 (0.1497)
AD8538/AD8539
3.20
3.00
2.80
8
3.20
3.00
2.80
1
5
5.15
4.90
4.65
4
PIN 1
0.65 BSC
0.95
0.85
0.75
1.10 MAX
0.15
0.00
0.38
0.22
COPLANARITY
0.10
0.23
0.08
8°
0°
0.80
0.60
0.40
SEATING
PLANE
COMPLIANT TO JEDEC STANDARDS MO-187-AA
Figure 66. 8-Lead Mini Small Outline Package [MSOP]
(RM-8)
Dimensions shown in millimeters
ORDERING GUIDE
Model
AD8538AUJZ-R2 1
AD8538AUJZ-REEL1
AD8538AUJZ-REEL71
AD8538ARZ1
AD8538ARZ-REEL1
AD8538ARZ-REEL71
AD8539ARMZ-R21
AD8539ARMZ-REEL1
AD8539ARZ1
AD8539ARZ-REEL1
AD8539ARZ-REEL71
1
Temperature Range
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
Package Description
5-Lead TSOT-23
5-Lead TSOT-23
5-Lead TSOT-23
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead MSOP
8-Lead MSOP
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
Z = RoHS Compliant Part.
Rev. A | Page 21 of 24
Package Option
UJ-5
UJ-5
UJ-5
R-8
R-8
R-8
RM-8
RM-8
R-8
R-8
R-8
Branding
A0C
A0C
A0C
A1S
A1S
AD8538/AD8539
NOTES
Rev. A | Page 22 of 24
AD8538/AD8539
NOTES
Rev. A | Page 23 of 24
AD8538/AD8539
NOTES
©2005–2007 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D06741-0-5/07(A)
Rev. A | Page 24 of 24