Precision Low Power
Data Sheet
FEATURES
SC70 package
Very low I
Single-supply operation: 5 V to 26 V
Dual-supply operation: ±2.5 V to ±13 V
Rail-to-rail output
Low supply current: 630 μA/amp typ
Low offset voltage: 500 μV max
Unity gain stable
No phase reversal
APPLICATIONS
Photodiode amplifiers
AT Es
Line-powered/battery-powered instrumentation
Industrial controls
Automotive sensors
Precision filters
Audio
GENERAL DESCRIPTION
The AD862x is a precision JFET input amplifier. It features
true single-supply operation, low power consumption, and
rail-to-rail output. The outputs remain stable with capacitive
loads of over 500 pF; the supply current is less than 630 μA/amp.
Applications for the AD862x include photodiode transimpedance
amplification, ATE reference level drivers, battery management,
both line powered and portable instrumentation, and remote
sensor signal conditioning, which includes automotive sensors.
The AD862x’s ability to swing nearly rail-to-rail at the input
and rail-to-rail at the output enables it to be used to buffer
CMOS DACs, ASICs, and other wide output swing devices in
single-supply systems.
: 1 pA max
B
Single-Supply JFET Amplifiers
AD8625/AD8626/AD8627
PIN CONFIGURATIONS
8-Lead SOIC
(R-8 Suffix)
NC
1
2
–IN V+
AD8627
3
+IN OUT
4
V– NC
NC = NO CONNECT
8-Lead SOIC
(R-8 Suffix)
OUT A
1
2
–IN A OUT B
+IN A –IN B
OUT A OUT D
–IN A –IN D
+IN A +IN D
+IN B +IN C
–IN B –IN C
OUT B OUT C
AD8626
3
4
V– +IN B
14-Lead SOIC
(R-Suffix)
114
213
312
AD8625
V+ V–
411
510
69
78
NC
8
7
6
5
V+
8
7
6
5
Figure 1.
The 5 MHz bandwidth and low offset are ideal for precision filters.
The AD862x is fully specified over the industrial temperature
range. (−40°C to +85°C). e AD8627 is available in both
5-lead SC70 and 8-lead SOIC surface-mount packages (SC70
packaged parts are available in tape and reel only). The AD8626
is available in MSOP and SOIC packages, while the AD8625 is
available in TSSOP and SOIC packages.
5-Lead SC70
1
2
V–
+IN
3
8-Lead MSOP
1
4
14-Lead TSSOP
1
7
(KS Suffix)
AD8627
(RM-Suffix)
AD8626
(RU-Suffix)
AD8625
5OUT A
V+
–IN
4
8
V+OUT A
OUT B–IN A
–IN B+IN A
+IN BV–
5
14
OUT DOUT A
–IN D–IN A
+IN D+IN A
V–V+
+IN C+IN B
–IN C–IN B
OUT COUT B
8
03023-001
Rev. F Document Feedback
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rights of third parties that may result from its use. Specifications subject to change without notice. No
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Tel: 781.329.4700 ©2003–2013 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
AD8625/AD8626/AD8627 Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Pin Configurations ........................................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Electrical Characteristics ............................................................. 3
Absolute Maximum Ratings ............................................................ 5
ESD Caution .................................................................................. 5
REVISION HISTORY
5/13—Rev. E to Rev. F
Changes to Applications Information Section ............................ 13
Changes to Ordering Guide .......................................................... 20
12/10—Rev. D to Rev. E
Removed Table Summary Conditions Above Table 3 ................. 5
Updated Outline Dimensions ....................................................... 18
3/09—Rev. C to Rev. D
Updated Outline Dimensions ....................................................... 18
Changes to Ordering Guide .......................................................... 19
11/04—Rev. B to Rev. C
Updated Figure Codes ....................................................... Universal
Changes to Figure 17 and 18 ........................................................... 8
Changes to Figure 33 and Figure 37 ............................................. 11
Changes to Figure 38 ...................................................................... 12
Changes to Figure 39 and Figure 40 ............................................. 13
Changes to Figure 41 to Figure 44 ................................................ 14
Typical Performance Characteristics ..............................................6
Applications Information .............................................................. 13
Minimizing Input Current ........................................................ 15
Photodiode Preamplifier Application...................................... 15
Output Amplifier for DACs ...................................................... 16
Eight-Pole Sallen Key Low-Pass Filter ..................................... 17
Outline Dimensions ....................................................................... 18
Ordering Guide .......................................................................... 20
1/04—Rev. A to Rev. B
Change to General Description ....................................................... 1
Change to Figure 10 .......................................................................... 7
Change to Figure13 ........................................................................... 7
Change to Figure 37 ....................................................................... 11
Changes to Figure 38 ...................................................................... 12
Change to Output Amplifier for DACs Section ......................... 15
Updated Outline Dimensions ....................................................... 19
10/03—Rev. 0 to Rev. A
Addition of Two New Parts ............................................... Universal
Change to General Description ....................................................... 1
Changes to Pin Configurations ....................................................... 1
Change to Specifications Table ........................................................ 3
Changes to Figure 31 ...................................................................... 10
Changes to Figure 32 ...................................................................... 11
Changes to Figure 38 ...................................................................... 12
Changes to Figure 46 ...................................................................... 16
Changes to Figure 47 ...................................................................... 16
Changes to Figure 49 ...................................................................... 17
Updated Outline Dimensions ....................................................... 18
Changes to Ordering Guide .......................................................... 19
Rev. F | Page 2 of 20
Data Sheet AD8625/AD8626/AD8627
OUTPUT CHARACTERISTICS
Slew Rate
SR
5 V/µs
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
@VS = 5 V, VCM = 1.5 V, TA = 25°C, unless otherwise noted.
Table 1.
Parameter Symbol Conditions Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage VOS 0.05 0.5 mV
−40°C < TA < +85°C 1.2 mV
Input Bias Current IB 0.25 1 pA
–40°C < TA < +85°C 60 pA
Input Offset Current IOS 0.5 pA
–40°C < TA < +85°C 25 pA
Input Voltage Range 0 3 V
Common-Mode Rejection Ratio CMRR VCM = 0 V to 2.5 V 66 87 dB
Large Signal Voltage Gain AVO RL = 10 kΩ, VO = 0.5 V to 4.5 V 100 230 V/mV
Offset Voltage Drift ∆VOS/∆T –40°C < TA < +85°C 2.5 µV/°C
Output Voltage High VOH 4.92 V
IL = 2 mA, –40°C < TA < +85°C 4.90 V
Output Voltage Low VOL 0.075 V
IL = 2 mA, –40°C < TA < +85°C 0.08 V
Output Current I
POWER SUPPLY
Power-Supply Rejection Ratio PSRR VS = 5 V to 26 V 80 104 dB
Supply Current/Amplifier ISY 630 785 µA
–40°C < TA < +85°C 800 µA
DYNAMIC PERFORMANCE
±10 mA
OUT
Gain Bandwidth Product GBP 5 MHz
Phase Margin ØM 60 Degrees
NOISE PERFORMANCE
Voltage Noise en p-p 0.1 Hz to 10 Hz 1.9 µV p-p
Voltage Noise Density en f = 1 kHz 17.5 nV/√Hz
Current Noise Density in f = 1 kHz 0.4 fA/√Hz
Channel Separation Cs f = 1 kHz 104 dB
Rev. F | Page 3 of 20
AD8625/AD8626/AD8627 Data Sheet
Input Bias Current
IB
0.25 1 pA
Common-Mode Rejection Ratio
CMRR
V
= –13 V to +10 V
76
105 dB
NOISE PERFORMANCE
@VS = ±13 V; VCM = 0 V; TA = 25°C, unless otherwise noted.
Table 2.
Parameter Symbol Conditions Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage VOS 0.35 0.75 mV
–40°C < TA < +85°C 1.35 mV
–40°C < TA < +85°C 60 pA
Input Offset Current IOS 0.5 pA
–40°C < TA < +85°C 25 pA
Input Voltage Range –13 +11 V
CM
Large Signal Voltage Gain AVO RL = 10 kΩ, VO = –11 V to +11 V 150 310 V/mV
Offset Voltage Drift ∆VOS/∆T –40°C < TA < +85°C 2.5 µV/°C
OUTPUT CHARACTERISTICS
Output Voltage High VOH +12.92 V
VOH IL = 2 mA, –40°C < TA < +85°C +12.91 V
Output Voltage Low VOL –12.92 V
VOL IL = 2 mA, –40°C < TA < +85°C –12.91 V
Output Current I
POWER SUPPLY
Power-Supply Rejection Ratio PSRR VS = ±2.5 V to ±13 V 80 104 dB
Supply Current/Amplifier ISY 710 850 µA
–40°C < TA < +85°C 900 µA
DYNAMIC PERFORMANCE
Slew Rate SR 5 V/µs
Gain Bandwidth Product GBP 5 MHz
Phase Margin ØM 60 Degrees
±15 mA
OUT
Voltage Noise en p-p 0.1 Hz to 10 Hz 2.5 µV p-p
Voltage Noise Density en f = 1 kHz 16 nV/√Hz
Current Noise Density in f = 1 kHz 0.5 fA/√Hz
Channel Separation Cs f = 1 kHz 105 dB
Rev. F | Page 4 of 20
Data Sheet AD8625/AD8626/AD8627
−
Lead Temperature Range (Soldering, 60 sec)
300°C
ABSOLUTE MAXIMUM RATINGS
θ
is specified for worst-case conditions when devices are
Table 3.
Parameter Ratings
Supply Voltage 27 V
Input Voltage VS– to VS+
Differential Input Voltage ± Supply Voltage
Output Short-Circuit Duration Indefinite
Storage Temperature Range, R Package
Operating Temperature Range
Junction Temperature Range, R Package
−65°C to +125°C
40°C to +85°C
−65°C to +150°C
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.
JA
soldered in circuit boards for surface-mount packages.
Table 4.
Package Type θJA θJC Unit
5-Lead SC70 (KS) 376 126 °C/W
8-Lead MSOP (RM) 210 45 °C/W
8-Lead SOIC (R) 158 43 °C/W
14-Lead SOIC (R) 120 36 °C/W
14-Lead TSSOP (RU) 180 35 °C/W
ESD CAUTION
Rev. F | Page 5 of 20
AD8625/AD8626/AD8627 Data Sheet
03023-002
VOLTAGE (
µ
V)
25
20
0
–600 –400
NUMBER OF AMPLIFIERS
–200
0
200 400
600
15
10
5
V
SY
=±12V
T
A
= 25
°
C
OFFSET VOLTAGE (µV/°C)
12
0
0 1 2 3 4 5 6 7 8 9 10
03023-003
NUMBER OF AMPLIFIERS
6
4
2
8
10
V
SY
=±13V
VOLTAGE (
µ
V)
18
16
14
12
10
8
6
4
2
0
–
400 –300 –200 –100 0 100 200 300
03023-004
NUMBER OF AMPLIFIERS
V
SY
= +3.5V/–1.5V
OFFSET VOLTAGE (µV/°C)
16
14
12
10
8
6
4
2
0
0
1
2 3 4 5 6 7 8 9 10
03023-005
NUMBER OF AMPLIFIERS
VSY = +3.5V/–1.5V
V
CM
(V)
50
–50
–40
–30
–
20
–10
0
10
20
30
40
–
15.0–12.5
–10.0 –
7.5 –5.0 –2.5 0 2.5 5.0 7.5 10.0 12.5 15.0
03023-006
INPUT BIAS CURRENT (pA)
V
SY
=±13V
T
A
= 25°C
VCM (V)
–0.9
0
–0.1
–0.2
–0.3
–0.4
–0.5
–0.6
–0.7
–0.8
–15.0–12.5–10.0 –7.5 –
5.0 –2.5 0 2.5 5.0 7.5 10.0 12.5 15.0
03023-007
INPUT BIAS CURRENT (pA)
VSY =±13V
TA = 25
°
C
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 2. Input Offset Voltage
Figure 3. Offset Voltage Drift
Figure 5. Offset Voltage Drift
Figure 6. Input Bias Current vs. V
CM
Figure 4. Input Offset Voltage
Figure 7. Input Bias Current vs. VCM
Rev. F | Page 6 of 20
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