AD8625 Analog Devices, AD8625 Datasheet

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AD8625

Manufacturer Part Number
AD8625
Description
Precision, Low Power, Single-Supply, JFET Amplifier
Manufacturer
Analog Devices
Datasheet

Specifications of AD8625

-3db Bandwidth
5MHz
Slew Rate
5V/µs
Vos
50µV
Ib
0.25pA
# Opamps Per Pkg
4
Input Noise (nv/rthz)
16nV/rtHz
Vcc-vee
5V to 26V
Isy Per Amplifier
850µA
Packages
SOIC,SOP

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD8625ARUZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD8625ARZ
Manufacturer:
AD
Quantity:
14 500
Part Number:
AD8625ARZ
Manufacturer:
ADI
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Part Number:
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Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD8625BRZ
Manufacturer:
ADI/亚德诺
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.
Rev. E
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: 781.461.3113
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.
Single-Supply JFET Amplifiers
OUT A
OUT A
OUT B
+IN A
–IN A
–IN A
+IN A
+IN B
–IN B
–IN
+IN
NC
V–
V–
V+
4
4
1
2
3
1
2
3
1
2
3
4
5
6
7
NC = NO CONNECT
14-Lead SOIC
8-Lead SOIC
8-Lead SOIC
(R-8 Suffix)
(R-8 Suffix)
AD8625/AD8626/AD8627
(R-Suffix)
AD8627
AD8626
AD8625
PIN CONFIGURATIONS
©2003–2010 Analog Devices, Inc. All rights reserved.
Precision Low Power
14
13
12
11
10
5
5
8
7
6
8
7
6
9
8
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 B
–IN A
–IN A
–IN B
+IN
V–
V+
V–
1
3
2
14-Lead TSSOP
8-Lead MSOP
5-Lead SC70
4
7
1
1
(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 AD8625

AD8625 Summary of contents

Page 1

... 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. ...

Page 2

... AD8625/AD8626/AD8627 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 12/10—Rev Rev. E Removed Table Summary Conditions Above Table 3 ................. 5 Updated Outline Dimensions ....................................................... 18 3/09—Rev Rev. D Updated Outline Dimensions ....................................................... 18 Changes to Ordering Guide .......................................................... 19 11/04— ...

Page 3

... –40°C < T < +85° GBP Ø p-p 0 kHz kHz kHz s Rev Page AD8625/AD8626/AD8627 Min Typ Max Unit 0.05 0.5 mV 1 100 230 V/mV 2 ...

Page 4

... AD8625/AD8626/AD8627 @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 Output Voltage Low ...

Page 5

... SC70 (KS) Indefinite 8-Lead MSOP (RM) −65°C to +125°C 8-Lead SOIC (R) 14-Lead SOIC (R) −40°C to +85°C 14-Lead TSSOP (RU) −65°C to +150°C 300°C ESD CAUTION Rev Page AD8625/AD8626/AD8627 θ θ Unit JA JC 376 126 °C/W 210 45 °C/W 158 43 ° ...

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

... Both the package and the board must be kept clean and dry. AD8625/AD8626/AD8627 PHOTODIODE PREAMPLIFIER APPLICATION The low input current and offset voltage levels of the AD862x, together with its low voltage noise, make this amplifier an excellent choice for preamplifiers used in sensitive photodiode applications ...

Page 16

... AD8625/AD8626/AD8627 OUTPUT AMPLIFIER FOR DACs Many system designers use amplifiers as buffers on the output of amplifiers to increase the DAC’s output driving capability. The high resolution current output DACs need high precision amplifiers on their output as current-to-voltage converters (I/V). Additionally, many DACs operate with a single supply ...

Page 17

... 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 Ω 100 F U3 815. Ω 815.8k 1/4 AD8625 1/4 C8 AD8625 μ R6 3.805 F Ω 25k D R8 Ω 25k ...

Page 18

... AD8625/AD8626/AD8627 OUTLINE DIMENSIONS 0.10 MAX COPLANARITY 0.10 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 2.20 2.00 1.80 2.40 1. 2.10 1.25 1.80 1. 0.65 BSC 1.00 0.40 1.10 0.90 0.10 0.80 0.70 0.22 SEATING 0.30 0.08 PLANE 0.15 COMPLIANT TO JEDEC STANDARDS MO-203-AA 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 (0.2441) 4.00 (0.1574) 1 5.80 (0.2284) 3.80 (0.1497) 4 1.27 (0.0500) BSC 1.75 (0.0688) 1.35 (0.0532) 8° 0° 0.51 (0.0201) 0.10 0.31 (0.0122) ...

Page 19

... BSC 4. PIN 1 0.65 BSC 1.05 1.20 1.00 0.20 MAX 0.80 0.09 0.15 SEATING 0.05 0.30 PLANE COPLANARITY 0.19 0.10 COMPLIANT TO JEDEC STANDARDS MO-153-AB-1 Figure 54. 14-Lead Thin Shrink Small Outline Package [TSSOP] (RU-14) Dimensions shown in millimeters Rev Page AD8625/AD8626/AD8627 15° MAX 0.80 0.23 0.55 0.09 0.40 0.50 (0.0197) 45° 0.25 (0.0098) 8° 0° 1.27 (0.0500) 0.25 (0.0098) 0.40 (0.0157) 0.17 (0.0067) 0.75 8° 0.60 0° 0.45 ...

Page 20

... AD8625ARUZ-REEL –40°C to +85°C AD8625AR –40°C to +85°C AD8625AR-REEL –40°C to +85°C AD8625AR-REEL7 –40°C to +85°C AD8625ARZ –40°C to +85°C AD8625ARZ-REEL –40°C to +85°C AD8625ARZ-REEL7 –40°C to +85°C AD8626ARMZ-REEL –40°C to +85°C AD8626ARMZ – ...

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