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Precision, Very Low Noise, Low Input Bias Current,
Wide Bandwidth JFET Operational Amplifiers
AD8510/AD8512/AD8513
FEATURES
Fast settling time: 500 ns to 0.1%
Low offset voltage: 400 μV maximum
Low T
C
V
OS
: 1 μV/°C typical
Low input bias current: 25 pA typical at V
S
= ±15 V
Dual-supply operation: ±5 V to ±15 V
Low noise: 8 nV/√Hz typical at f = 1 kHz
Low distortion: 0.0005%
No phase reversal
Unity gain stable
NULL
1
–IN
2
PIN CONFIGURATIONS
8
NC
V+
AD8510
NULL
1
–IN
2
8
NC
7
02729-003
NC = NO CONNECT
NC = NO CONNECT
Figure 1. 8-Lead MSOP (RM Suffix)
OUT A
1
–IN A
2
8
Figure 2. 8-Lead SOIC_N (R Suffix)
OUT A
1
–IN A
2
8
V+
V+
APPLICATIONS
Instrumentation
Multipole filters
Precision current measurement
Photodiode amplifiers
Sensors
Audio
Figure 3. 8-Lead MSOP (RM Suffix)
OUT A
1
–IN A
2
+IN A
3
14
13
02729-001
Figure 4. 8-Lead SOIC_N (R Suffix)
OUT A
1
–IN A
2
+IN A
3
14
13
OUT D
–IN D
+IN D
OUT D
–IN D
+IN D
11
V–
V+
4
TOP VIEW
+IN B
5
(Not to Scale)
10
+IN C
02729-005
AD8513
12
11
V–
V+
4
TOP VIEW
+IN B
5
(Not to Scale)
10
+IN C
AD8513
12
–IN B
6
OUT B
7
9
8
–IN C
OUT C
–IN B
6
OUT B
7
9
8
–IN C
OUT C
02729-006
Figure 5. 14-Lead SOIC_N (R Suffix)
Figure 6. 14-Lead TSSOP (RU Suffix)
GENERAL DESCRIPTION
The AD8510/AD8512/AD8513 are single-, dual-, and quad-
precision JFET amplifiers that feature low offset voltage, input
bias current, input voltage noise, and input current noise.
The combination of low offsets, low noise, and very low input
bias currents makes these amplifiers especially suitable for high
impedance sensor amplification and precise current measurements
using shunts. The combination of dc precision, low noise, and
fast settling time results in superior accuracy in medical
instruments, electronic measurement, and automated test
equipment. Unlike many competitive amplifiers, the AD8510/
AD8512/AD8513 maintain their fast settling performance even
with substantial capacitive loads. Unlike many older JFET
amplifiers, the AD8510/AD8512/AD8513 do not suffer from
output phase reversal when input voltages exceed the maximum
common-mode voltage range.
Fast slew rate and great stability with capacitive loads make the
AD8510/AD8512/AD8513 a perfect fit for high performance
filters. Low input bias currents, low offset, and low noise result
in a wide dynamic range of photodiode amplifier circuits. Low
noise and distortion, high output current, and excellent speed
make the AD8510/AD8512/AD8513 great choices for audio
applications.
The AD8510/AD8512 are both available in 8-lead narrow SOIC_N
and 8-lead MSOP packages. MSOP-packaged parts are only
available in tape and reel. The AD8513 is available in 14-lead
SOIC_N and TSSOP packages.
The AD8510/AD8512/AD8513 are specified over the −40°C to
+125°C extended industrial temperature range.
Rev. H
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 ©2002–2007 Analog Devices, Inc. All rights reserved.
02729-002
7
OUT B
TOP VIEW
+IN A
3
6
–IN B
(Not to Scale)
V–
4
5
+IN B
AD8512
7
OUT B
TOP VIEW
+IN A
3
6
–IN B
(Not to Scale)
V–
4
5
+IN B
AD8512
02729-004
TOP VIEW
+IN
3
6
OUT
(Not to Scale)
V–
4
5
NULL
V+
TOP VIEW
6
OUT
+IN
3
(Not to Scale)
5
NULL
V–
4
7
AD8510
AD8510/AD8512/AD8513
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Pin Configurations ........................................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Characteristics............................................................. 4
Absolute Maximum Ratings............................................................ 6
ESD Caution.................................................................................. 6
Typical Performance Characteristics ............................................. 7
General Application Information................................................. 13
Input Overvoltage Protection ................................................... 13
Output Phase Reversal............................................................... 13
Total Harmonic Distortion (THD) + Noise .............................. 13
Total Noise Including Source Resistors ................................... 13
Settling Time............................................................................... 14
Overload Recovery Time .......................................................... 14
Capacitive Load Drive ............................................................... 14
Open-Loop Gain and Phase Response.................................... 15
Precision Rectifiers..................................................................... 16
I-V Conversion Applications.................................................... 17
Outline Dimensions ....................................................................... 19
Ordering Guide .......................................................................... 20
REVISION HISTORY
10/07—Rev. G to Rev. H
Changes to Crosstalk Section........................................................ 18
Added Figure 58 ............................................................................. 18
6/07—Rev. F to Rev. G
Changes to Figure 1 and Figure 2 .................................................. 1
Changes to Table 1 and Table 2...................................................... 3
Updated Outline Dimensions....................................................... 19
Changes to Ordering Guide.......................................................... 20
6/06—Rev. E to Rev. F
Changes to Figure 23 ....................................................................... 9
Updated Outline Dimensions....................................................... 19
Changes to Ordering Guide .......................................................... 20
6/04—Rev. D to Rev. E
Changes to Format .............................................................Universal
Changes to Specifications ................................................................ 3
Updated Outline Dimensions ....................................................... 19
10/03—Rev. C to Rev. D
Added AD8513 Model .......................................................Universal
Changes to Specifications ................................................................ 3
Added Figure 36 through Figure 40............................................. 10
Added Figure 55 and Figure 57..................................................... 17
Changes to Ordering Guide .......................................................... 20
9/03—Rev. B to Rev. C
Changes to Ordering Guide ........................................................... 4
Updated Figure 2 ............................................................................ 10
Changes to Input Overvoltage Protection Section .................... 10
Changes to Figure 10 and Figure 11............................................. 12
Changes to Photodiode Circuits Section..................................... 13
Changes to Figure 13 and Figure 14............................................. 13
Deleted Precision Current Monitoring Section.......................... 14
Updated Outline Dimensions ....................................................... 15
3/03—Rev. A to Rev. B
Updated Figure 5 ............................................................................ 11
Updated Outline Dimensions....................................................... 15
8/02—Rev. 0 to Rev. A
Added AD8510 Model.......................................................Universal
Added Pin Configurations ...............................................................1
Changes to Specifications.................................................................2
Changes to Ordering Guide .............................................................4
Changes to TPC 2 and TPC 3 ..........................................................5
Added TPC 10 and TPC 12..............................................................6
Replaced TPC 20 ...............................................................................8
Replaced TPC 27 ...............................................................................9
Changes to General Application Information Section .............. 10
Changes to Figure 5........................................................................ 11
Changes to I-V Conversion Applications Section ..................... 13
Changes to Figure 13 and Figure 14............................................. 13
Changes to Figure 17...................................................................... 14
Rev. H | Page 2 of 20
AD8510/AD8512/AD8513
SPECIFICATIONS
@ V
S
= ±5 V, V
CM
= 0 V, T
A
= 25°C, unless otherwise noted.
Table 1.
Parameter
INPUT CHARACTERISTICS
Offset Voltage (B Grade)
1
Offset Voltage (A Grade)
Input Bias Current
Symbol
V
OS
−40°C < T
A
< +125°C
V
OS
−40°C < T
A
< +125°C
I
B
−40°C < T
A
< +85°C
−40°C < T
A
< +125°C
Input Offset Current
I
OS
−40°C < T
A
< +85°C
−40°C < T
A
< +125°C
Input Capacitance
Differential
Common Mode
Input Voltage Range
Common-Mode Rejection Ratio
Large-Signal Voltage Gain
Offset Voltage Drift (B Grade)
1
Offset Voltage Drift (A Grade)
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Output Voltage High
Output Voltage Low
Output Voltage High
Output Voltage Low
Output Current
POWER SUPPLY
Power Supply Rejection Ratio
Supply Current/Amplifier
AD8510/AD8512/AD8513
AD8510/AD8512
AD8513
DYNAMIC PERFORMANCE
Slew Rate
Gain Bandwidth Product
Settling Time
Total Harmonic Distortion (THD) + Noise
Phase Margin
NOISE PERFORMANCE
Voltage Noise Density
12.5
11.5
CMRR
A
VO
ΔV
OS
/ΔT
ΔV
OS
/ΔT
V
OH
V
OL
V
OH
V
OL
V
OH
V
OL
I
OUT
PSRR
I
SY
V
CM
= −2.0 V to +2.5 V
R
L
= 2 kΩ, V
O
= −3 V to +3 V
−2.0
86
65
+2.5
100
107
0.9
1.7
4.3
−4.9
4.2
−4.9
4.1
−4.8
±54
130
2.0
2.3
2.5
2.75
5
21
0.1
Conditions
Min
Typ
0.08
Max
0.4
0.8
0.9
1.8
75
0.7
7.5
50
0.3
0.5
Unit
mV
mV
mV
mV
pA
nA
nA
pA
nA
nA
pF
pF
V
dB
V/mV
μV/°C
μV/°C
V
V
V
V
V
V
mA
dB
mA
mA
mA
V/μs
MHz
μs
%
Degrees
nV/√Hz
nV/√Hz
nV/√Hz
nV/√Hz
μV p-p
5
12
R
L
= 10 kΩ
R
L
= 10 kΩ, −40°C < T
A
< +125°C
R
L
= 2 kΩ
R
L
= 2 kΩ, −40°C < T
A
< +125°C
R
L
= 600 Ω
R
L
= 600 Ω, −40°C < T
A
< +125°C
4.1
3.9
3.7
±40
−4.7
−4.5
−4.2
V
S
= ±4.5 V to ±18 V
V
O
= 0 V
−40°C < T
A
< +125°C
−40°C < T
A
< +125°C
86
SR
GBP
t
S
THD + N
φ
M
e
n
R
L
= 2 kΩ
To 0.1%, 0 V to 4 V step, G = +1
1 kHz, G = +1, R
L
= 2 kΩ
20
8
0.4
0.0005
44.5
34
12
8.0
7.6
2.4
Peak-to-Peak Voltage Noise
1
e
n
p-p
f = 10 Hz
f = 100 Hz
f = 1 kHz
f = 10 kHz
0.1 Hz to 10 Hz bandwidth
10
5.2
AD8510/AD8512 only.
Rev. H | Page 3 of 20
AD8510/AD8512/AD8513
ELECTRICAL CHARACTERISTICS
@ V
S
= ±15 V, V
CM
= 0 V, T
A
= 25°C, unless otherwise noted.
Table 2.
Parameter
INPUT CHARACTERISTICS
Offset Voltage (B Grade)
1
Symbol
V
OS
−40°C < T
A
< +125°C
Offset Voltage (A Grade)
Input Bias Current
V
OS
−40°C < T
A
< +125°C
I
B
−40°C < T
A
< +85°C
−40°C < T
A
< +125°C
Input Offset Current
I
OS
−40°C < T
A
< +85°C
−40°C < T
A
< +125°C
Input Capacitance
Differential
Common Mode
Input Voltage Range
Common-Mode Rejection Ratio
Large-Signal Voltage Gain
Offset Voltage Drift (B Grade)
1
Offset Voltage Drift (A Grade)
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Output Voltage High
Output Voltage Low
Output Voltage High
Output Voltage Low
Output Current
POWER SUPPLY
Power Supply Rejection Ratio
Supply Current/Amplifier
AD8510/AD8512/AD8513
AD8510/AD8512
AD8513
DYNAMIC PERFORMANCE
Slew Rate
Gain Bandwidth Product
Settling Time
Total Harmonic Distortion (THD) + Noise
Phase Margin
12.5
11.5
CMRR
A
VO
ΔV
OS
/ΔT
ΔV
OS
/ΔT
V
OH
V
OL
V
OH
V
OL
V
OH
V
OL
I
OUT
PSRR
I
SY
V
S
= ±4.5 V to ±18 V
V
O
= 0 V
−40°C < T
A
< +125°C
−40°C < T
A
< +125°C
SR
GBP
t
S
THD + N
φ
M
R
L
= 2 kΩ
To 0.1%, 0 V to 10 V step, G = +1
To 0.01%, 0 V to 10 V step, G = +1
1 kHz, G = +1, R
L
= 2 kΩ
86
2.2
2.5
2.6
3.0
R
L
= 10 kΩ
R
L
= 10 kΩ, −40°C < T
A
< +125°C
R
L
= 2 kΩ
R
L
= 2 kΩ, −40°C < T
A
< +125°C
R
L
= 600 Ω
R
L
= 600 Ω, −40°C < T
A
< +125°C
R
L
= 600 Ω
R
L
= 600 Ω, −40°C < T
A
< +125°C
+14.0
+13.8
+13.5
+11.4
V
CM
= −12.5 V to +12.5 V
R
L
= 2 kΩ, V
CM
= 0 V,
V
O
= −13.5 V to +13.5 V
−13.5
86
115
+13.0
108
196
1.0
1.7
+14.2
−14.9
+14.1
–14.8
+13.9
−14.3
±70
5
12
6
25
0.1
Conditions
Min
Typ
0.08
Max
0.4
0.8
1.0
1.8
80
0.7
10
75
0.3
0.5
Unit
mV
mV
mV
mV
pA
nA
nA
pA
nA
nA
pF
pF
V
dB
V/mV
μV/°C
μV/°C
V
V
V
V
V
V
V
V
mA
dB
mA
mA
mA
V/μs
MHz
μs
μs
%
Degrees
−14.6
−14.5
−13.8
−12.1
20
8
0.5
0.9
0.0005
52
Rev. H | Page 4 of 20
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