AD8682ARZ Analog Devices Inc, AD8682ARZ Datasheet

IC OPAMP JFET 3.5MHZ DUAL 8SOIC

AD8682ARZ

Manufacturer Part Number
AD8682ARZ
Description
IC OPAMP JFET 3.5MHZ DUAL 8SOIC
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD8682ARZ

Slew Rate
9 V/µs
Amplifier Type
J-FET
Number Of Circuits
2
Gain Bandwidth Product
3.5MHz
Current - Input Bias
6pA
Voltage - Input Offset
350µV
Current - Supply
210µA
Current - Output / Channel
12mA
Voltage - Supply, Single/dual (±)
9 V ~ 36 V, ±4.5 V ~ 18 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Op Amp Type
General Purpose
No. Of Amplifiers
2
Bandwidth
3.5MHz
Supply Voltage Range
± 4.5V To ± 18V
Amplifier Case Style
SOIC
No. Of Pins
8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Output Type
-
-3db Bandwidth
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD8682ARZ-REEL7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
FEATURES
Low supply current: 250 μA/amp maximum
High slew rate: 9 V/μs
Bandwidth: 3.5 MHz typical
Low offset voltage: 1 mV maximum @ 25°C
Low input bias current: 20 pA maximum @ 25°C
CMRR: 90 dB typical
Fast settling time
Unity gain stable
APPLICATIONS
Portable telecommunications
Low power industrial and instrumentation
Loop filters
Active and precision filters
Integrators
Strain gauge amplifiers
Portable medical instrumentation
Supply current monitoring
GENERAL DESCRIPTION
The AD8682 and AD8684 are dual and quad low power, precision
(1 mV) JFET amplifiers featuring excellent speed at low supply
currents. The slew rate is typically 9 V/μs with a supply current
under 250 μA per amplifier. These unity-gain stable amplifiers
have a typical gain bandwidth of 3.5 MHz. The JFET input stage
ensures bias current is typically a few picoamps and below 125 pA
maximum over the full temperature operating range.
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.
Dual/Quad Low Power, High Speed
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The devices are ideal for portable, low power applications,
especially with high source impedance. The devices are unity gain
stable and can drive higher capacity loads (G = 1, noninverting),
as an example of their excellent dynamic response over a wide
range of conditions, delivering dc precision performance at low
quiescent currents.
JFET Operational Amplifiers
Figure 2. 14-Lead SOIC_N and 14-Lead TSSOP
Figure 1. 8-Lead SOIC_N and 8-Lead MSOP
OUT A
OUT B
OUT A
+IN B
PIN CONFIGURATIONS
–IN A
+IN A
–IN A
+IN A
–IN B
©2006–2007 Analog Devices, Inc. All rights reserved.
V–
V+
1
2
3
4
1
2
3
4
5
6
7
(Not to Scale)
(Not to Scale)
AD8682
TOP VIEW
TOP VIEW
AD8684
AD8682/AD8684
14
13
12
11
10
8
7
6
5
9
8
V+
OUT B
–IN B
+IN B
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
www.analog.com

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AD8682ARZ Summary of contents

Page 1

FEATURES Low supply current: 250 μA/amp maximum High slew rate: 9 V/μs Bandwidth: 3.5 MHz typical Low offset voltage maximum @ 25°C Low input bias current maximum @ 25°C CMRR typical Fast settling time ...

Page 2

AD8682/AD8684 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Pin Configurations ........................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Electrical Characteristics............................................................. 3 Absolute Maximum Ratings............................................................ 4 Thermal Resistance ...................................................................... 4 REVISION HISTORY 7/07—Rev Rev. ...

Page 3

SPECIFICATIONS ELECTRICAL CHARACTERISTICS V = ±15 25° unless otherwise noted Table 1. Parameter INPUT CHARACTERISTICS Offset Voltage AD8682 AD8684 Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection ...

Page 4

AD8682/AD8684 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage Input Voltage 1 Differential Input Voltage Output Short-Circuit Duration Storage Temperature Range Operating Temperature Range Junction Temperature Range Lead Temperature (Soldering, 60 sec) 1 For supply voltages less than ±18 V, ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS –20 –40 1k 10k 100k FREQUENCY (Hz) Figure 3. AD8682 Open-Loop Gain and Phase vs. Frequency ±15V 10kΩ ...

Page 6

AD8682/AD8684 1000 100 100 FREQUENCY (Hz) Figure 9. Voltage Noise Density vs. Frequency 1000 V = ±15V 25°C A 100 10 1 0.1 –15 –10 –5 0 COMMON-MODE VOLTAGE (V) Figure 10. Input Bias ...

Page 7

V = ±15V 25° 100 1k LOAD RESISTANCE (Ω) Figure 15. Absolute Output Voltage vs. Load Resistance 140 V = ±15V S T ...

Page 8

AD8682/AD8684 400 360 320 280 240 200 160 120 TCV (µV/°C) OS Figure 21. AD8682 TCV Distribution SOIC_N Package ...

Page 9

PSRR+ 80 PSRR– 10k 100k 1M FREQUENCY (Hz) Figure 27. AD8684 PSRR vs. Frequency 14 12 SINK 10 SOURCE –50 – TEMPERATURE (°C) ...

Page 10

AD8682/AD8684 APPLICATIONS INFORMATION The AD8682 and AD8684 are dual and quad JFET op amps that are optimized for high speed at low power. This combination makes these amplifiers excellent choices for battery-powered or low power applications that require above average ...

Page 11

PROGRAMMABLE STATE VARIABLE FILTER The circuit shown in Figure 34 can be used to accurately program the Q factor; the cutoff frequency and the gain of a 2-pole C state variable filter. The AD8684 has been used in ...

Page 12

AD8682/AD8684 OUTLINE DIMENSIONS 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2440) 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) 0.25 (0.0098) ...

Page 13

... ORDERING GUIDE Model Temperature Range 1 AD8682ARZ −40°C to +85°C 1 AD8682ARZ-REEL −40°C to +85°C 1 AD8682ARZ-REEL7 −40°C to +85°C 1 AD8682ARMZ-R2 −40°C to +85°C 1 AD8682ARMZ-REEL −40°C to +85°C 1 AD8684ARZ −40°C to +85°C 1 AD8684ARZ-REEL −40°C to +85°C ...

Page 14

AD8682/AD8684 NOTES Rev Page ...

Page 15

NOTES Rev Page AD8682/AD8684 ...

Page 16

AD8682/AD8684 NOTES ©2006–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06278-0-7/07(A) Rev Page ...

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