AD8627 Analog Devices, AD8627 Datasheet

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AD8627

Manufacturer Part Number
AD8627
Description
Precision, Low Power, Single Supply JFET Amplifier in 5-Lead SC70
Manufacturer
Analog Devices
Datasheet

Specifications of AD8627

-3db Bandwidth
5MHz
Slew Rate
5V/µs
Vos
50µV
Ib
0.25pA
# Opamps Per Pkg
1
Input Noise (nv/rthz)
16nV/rtHz
Vcc-vee
5V to 26V
Isy Per Amplifier
850µA
Packages
SC70,SOIC

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
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Manufacturer:
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Quantity:
20 000
Part Number:
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Manufacturer:
AD
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12 000
Part Number:
AD8627AKSZ-REEL7
Manufacturer:
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101
Part Number:
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Manufacturer:
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Quantity:
20 000
Part Number:
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Manufacturer:
AD
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Manufacturer:
ADI/亚德诺
Quantity:
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Company:
Part Number:
AD8627ARZ
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Part Number:
AD8627ARZ-REEL7
Manufacturer:
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Quantity:
20 000
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
ATEs
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.
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). The 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.
Rev. C
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.
B
: 1 pA max
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
OUT A
OUT A
OUT B
+IN A
+IN A
+IN B
–IN A
–IN A
–IN B
+IN
–IN
NC
V–
V–
V+
Single-Supply JFET Amplifiers
1
3
4
1
3
4
1
2
3
4
5
6
7
2
2
NC = NO CONNECT
14-Lead SOIC
8-Lead SOIC
8-Lead SOIC
(R-8 Suffix)
(R-8 Suffix)
(R-Suffix)
AD8627
AD8626
AD8625
AD8625/AD8626/AD8627
PIN CONFIGURATIONS
14
13
12
11
10
© 2004 Analog Devices, Inc. All rights reserved.
8
6
5
8
6
5
9
8
7
7
Precision Low Power
NC
V+
OUT
NC
V+
OUT B
–IN B
+IN B
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
Figure 1.
OUT A
OUT A
OUT A
OUT B
–IN A
+IN A
–IN A
+IN A
+IN B
–IN B
+IN
V–
V–
V+
1
2
3
14-Lead TSSOP
8-Lead MSOP
5-Lead SC70
1
4
1
7
(RM-Suffix)
(RU-Suffix)
(KS Suffix)
AD8627
AD8626
AD8625
www.analog.com
14
8
5
8
5
4
V+
–IN
V+
OUT B
–IN B
+IN B
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C

Related parts for AD8627

AD8627 Summary of contents

Page 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). The 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 ...

Page 2

... AD8625/AD8626/AD8627 TABLE OF CONTENTS AD8625/AD8626/AD8627 Specifications..................................... 3 Electrical Characteristics............................................................. 3 Electrical Characteristics............................................................. 4 Absolute Maximum Ratings............................................................ 5 Typical Performance Characteristics ............................................. 6 Applications..................................................................................... 13 REVISION HISTORY 11/04—Data Sheet Changed from Rev 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 ...

Page 3

... AD8625/AD8626/AD8627 SPECIFICATIONS ELECTRICAL CHARACTERISTICS @ 1 25°C, unless otherwise noted Table 1. Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift OUTPUT CHARACTERISTICS Output Voltage High ...

Page 4

... AD8625/AD8626/AD8627 ELECTRICAL CHARACTERISTICS @V = ± 25°C, unless otherwise noted Table 2. Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift OUTPUT CHARACTERISTICS Output Voltage High ...

Page 5

... V affect device reliability S– S+ ± Supply Voltage Indefinite −65°C to +125°C −40°C to +85°C −65°C to +150°C 300°C θ Unit JC 126 °C/W 45 °C/W 43 °C/W 36 °C/W 35 °C/W Rev Page AD8625/AD8626/AD8627 ...

Page 6

... AD8625/AD8626/AD8627 TYPICAL PERFORMANCE CHARACTERISTICS 25 ± 12V SY ° –600 –400 –200 0 µ VOLTAGE ( V) Figure 2. Input Offset Voltage OFFSET VOLTAGE ( Figure 3. Offset Voltage Drift +3.5V/–1. –400 – ...

Page 7

... CM Rev Page AD8625/AD8626/AD8627 (V) CM Figure 11. Input Offset Voltage vs ± 13V Ω LOAD RESISTANCE (k ) Figure 12. Open-Loop Gain vs. Load Resistance ...

Page 8

... AD8625/AD8626/AD8627 600 ± 13V SY 500 400 R 300 200 Ω 100k L 100 0 Ω 600 L –100 –200 –300 –400 –15 –10 –5 0 OUTPUT VOLTAGE (V) Figure 14. Input Error Voltage vs. Output Voltage for Resistive Loads 250 Ω 200 POS RAIL 150 Ω Ω 10k ...

Page 9

... Rev Page AD8625/AD8626/AD8627 ± 13V SY 10k 100k 1M FREQUENCY (Hz) Figure 23. CMRR vs. Frequency 10k 100k 1M FREQUENCY (Hz) Figure 24. CMRR vs. Frequency ± 13V SY +PSRR –PSRR 10k ...

Page 10

... AD8625/AD8626/AD8627 140 120 100 –20 –40 –60 1k 10k 100k FREQUENCY (Hz) Figure 26. PSRR vs. Frequency 300 ± 13V SY 270 240 210 180 150 120 + +100 10k 100k 1M FREQUENCY (Hz) Figure 27. Output Impedance vs. Frequency 300 270 240 210 ...

Page 11

... Figure 36. Voltage Noise Density –40 –50 –60 –70 ± 5V –80 –90 –100 –110 10 100 Figure 37. Total Harmonic Distortion + Noise vs. Frequency Rev Page AD8625/AD8626/AD8627 FREQUENCY (kHz FREQUENCY (kHz p-p ± ...

Page 12

... AD8625/AD8626/AD8627 20kΩ 2kΩ 2kΩ –80 –90 –100 –110 –120 –130 –140 –150 –160 10 100 1k FREQUENCY (Hz) Figure 38. Channel Separation 2kΩ p 4.5V p 18V p-p IN 10k 100k Rev Page ...

Page 13

... Either of these conditions damages the amplifier if the condition exists for more than 10 seconds. A 100 kΩ resistor allows the amplifier to withstand continuous overvoltage, while increasing the input voltage noise by a negligible amount. . Driving the input of , respectively Rev Page AD8625/AD8626/AD8627 INPUT OUTPUT 0V µ ...

Page 14

... AD8625/AD8626/AD8627 The AD862x can safely withstand input voltages 15 V below V if the total voltage between the positive supply and the input SY terminal is less than 26 V. Figure 41 through Figure 43 show the AD862x in different configurations accommodating signals close to the negative rail. The amplifier input stage typically maintains picoamp-level input currents across that input voltage range ...

Page 15

... 15pF 100M Ω Figure 45. A Photodiode Model Showing DC Error Rev Page AD8625/AD8626/AD8627 , contributes an output voltage equal junction resistance that typically values and 5pF R F Ω 1. OUTPUT I B AD8627 ...

Page 16

... DIGITAL INTERFACE CONNECTIONS OMITTED FOR CLARITY Figure 47. 4-Quadrant Multiplying Application Circuit Rev Page 2.5V µ µ 0 REFF REFS AD8627 UNIPOLAR AD5551/AD5552 OUT OUTPUT DGND AGND Figure 46. Unipolar Output Ω 10k Ω 10k +13V 1/2 AD8626 Ω 5k –10V < V OUT – ...

Page 17

... U2 Ω 286. AD8625 µ 69.14 F 286. Ω 25k C6 µ 30. Figure 49. 10 Hz, 8-Pole Sallen Key Low-Pass Filter Rev Page AD8625/AD8626/AD8627 1 0.8 V1 0 100 FREQUENCY (Hz) Figure 48. Frequency Response Output at Different Stages of the Low-Pass Filter C5 µ 100 F Ω C7 R12 µ ...

Page 18

... AD8625/AD8626/AD8627 OUTLINE DIMENSIONS 2.00 BSC 5 4 1.25 BSC 2.10 BSC PIN 1 0.65 BSC 1.00 0.90 1.10 MAX 0.70 0.22 0.08 0.30 0.15 SEATING PLANE 0.10 COPLANARITY COMPLIANT TO JEDEC STANDARDS MO-203AA Figure 50. 5-Lead Plastic Surface-Mount Package [SC70] (KS-5) Dimensions shown in millimeters 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2440) 4.00 (0.1574) 5.80 (0.2284) 3.80 (0.1497 1.27 (0.0500) BSC 1.75 (0.0688) 1.35 (0.0532) 0.25 (0.0098) 0.10 (0.0040) ...

Page 19

... AD8627AKSZ-R2 –40°C to +85°C AD8627AR –40°C to +85°C AD8627AR-REEL –40°C to +85°C AD8627AR-REEL7 –40°C to +85°C 1 AD8627ARZ –40°C to +85°C 1 AD8627ARZ-REEL –40°C to +85°C 1 AD8627ARZ-REEL7 –40°C to +85°C AD8626ARM-REEL –40°C to +85°C AD8626ARM-R2 – ...

Page 20

... AD8625/AD8626/AD8627 NOTES © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C03023-0-11/04(C) Rev Page ...

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