AD8642ARZ Analog Devices Inc, AD8642ARZ Datasheet

IC OPAMP JFET R-R 3.5MHZ 8SOIC

AD8642ARZ

Manufacturer Part Number
AD8642ARZ
Description
IC OPAMP JFET R-R 3.5MHZ 8SOIC
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD8642ARZ

Slew Rate
3 V/µs
Amplifier Type
J-FET
Number Of Circuits
2
Output Type
Rail-to-Rail
Gain Bandwidth Product
3.5MHz
Current - Input Bias
0.25pA
Voltage - Input Offset
70µV
Current - Supply
200µA
Current - Output / Channel
12mA
Voltage - Supply, Single/dual (±)
5 V ~ 26 V, ±2.5 V ~ 13 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Op Amp Type
Precision
No. Of Amplifiers
2
Bandwidth
3.5MHz
Supply Voltage Range
5V To 26V
Amplifier Case Style
SOIC
No. Of Pins
8
Operating Temperature Range
-40°C To +125°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
-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:
AD8642ARZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD8642ARZ-REEL
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD8642ARZ-REEL7
Manufacturer:
ADI
Quantity:
2 000
Part Number:
AD8642ARZ-REEL7
Manufacturer:
ADI
Quantity:
5 000
FEATURES
Low supply current: 250 μA max
Very low input bias current: 1 pA max
Low offset voltage: 750 μV max
Single-supply operation: 5 V to 26 V
Dual-supply operation: ±2.5 V to ±13 V
Rail-to-rail output
Unity-gain stable
No phase reversal
SC70 package
APPLICATIONS
Line-/battery-powered instruments
Photodiode amplifiers
Precision current sensing
Medical instrumentation
Industrial controls
Precision filters
Portable audio
ATE
GENERAL DESCRIPTION
The AD8641/AD8642/AD8643 are low power, precision JFET
input amplifiers featuring extremely low input bias current and
rail-to-rail output. The ability to swing nearly rail-to-rail at the
input and rail-to-rail at the output enables designers to buffer
CMOS DACs, ASICs, and other wide output swing devices in
single-supply systems. The outputs remain stable with
capacitive loads of more than 500 pF.
The AD8641/AD8642/AD8643 are suitable for applications
utilizing multichannel boards that require low power to manage
heat. Other applications include photodiodes, ATE reference
level drivers, battery management, and industrial controls.
The AD8641/AD8642/AD8643 are fully specified over the
extended industrial temperature range of –40°C to +125°C. The
AD8641 is available in 5-lead SC70 and 8-lead SOIC lead-free
packages. The AD8642 is available in 8-lead MSOP and 8-lead
SOIC lead-free packages. The AD8643 is available in 14-lead
SOIC and 16-lead, 3 mm × 3 mm, LFCSP lead-free 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.
Low Power, Rail-to-Rail Output, Precision
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
NOTES
1. NC = NO CONNECT.
2. EXPOSED PAD SHOULD BE CONNECTED TO V– OR TO GROUND.
Figure 6. 16-Lead LFCSP (CP-16) (Not Drawn to Scale)
AD8641/AD8642/AD8643
OUT A
OUT A
OUT B
OUT A
–IN A
+IN A
–IN A
+IN A
+IN B
–IN B
PIN CONFIGURATIONS
©2004–2010 Analog Devices, Inc. All rights reserved.
+IN A
+IN B
VEE
–IN A
–IN A
+IN A
–IN
+IN
NC
Figure 4. 8-Lead MSOP (RM-8)
V+
V–
OUT
Figure 5. 14-Lead SOIC (R-14)
VEE
V+
V–
Figure 1. 5-Lead SC70 (KS-5)
+IN
Figure 2. 8-Lead SOIC (R-8)
Figure 3. 8-Lead SOIC (R-8)
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
5
6
7
1
2
3
4
NC = NO CONNECT
1
2
3
(Not to Scale)
(Not to Scale)
(Not to Scale)
(Not to Scale)
(Not to Scale)
AD8641
TOP VIEW
AD8643
TOP VIEW
AD8642
TOP VIEW
AD8642
TOP VIEW
AD8641
TOP VIEW
AD8643
TOP VIEW
PIN 1
INDICATOR
JFET Amplifiers
14
13
12
11
10
8
7
6
5
9
8
5
4
8
7
6
5
8
7
6
5
V+
OUT B
–IN B
+IN B
VCC
–IN
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
NC
VCC
OUT
NC
V+
OUT B
–IN B
+IN B
12
11
10
9
–IN D
+IN D
V–
+IN C
www.analog.com

Related parts for AD8642ARZ

AD8642ARZ Summary of contents

Page 1

FEATURES Low supply current: 250 μA max Very low input bias current max Low offset voltage: 750 μV max Single-supply operation Dual-supply operation: ±2 ±13 V Rail-to-rail output Unity-gain stable No ...

Page 2

AD8641/AD8642/AD8643 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Pin Configurations ........................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Characteristics ............................................................. 3 REVISION HISTORY 11/10—Rev Rev. C Changes to Figure 6 ...

Page 3

SPECIFICATIONS ELECTRICAL CHARACTERISTICS 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 ...

Page 4

AD8641/AD8642/AD8643 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 ...

Page 5

ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings apply at 25°C, unless otherwise noted. Table 3. Parameter Supply Voltage Input Voltage Differential Input Voltage Output Short-Circuit Duration Storage Temperature Range KS-5, R-8, RM-8, R-14, CP-16 Packages Operating Temperature Range Junction Temperature Range ...

Page 6

AD8641/AD8642/AD8643 TYPICAL PERFORMANCE CHARACTERISTICS 80 = ±13V (mV) OS Figure 7. Input Offset Voltage OFFSET VOLTAGE (μV/°C) Figure 8. Offset ...

Page 7

V SY 100 100 TEMPERATURE (°C) Figure 13. Input Bias Current vs. Temperature 1.0 = +5V OR ± 0.8 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 ...

Page 8

AD8641/AD8642/AD8643 600 = ±13V V SY 500 400 300 200 100 0 100kΩ –100 –200 –300 10kΩ 1kΩ –400 –500 –600 –15 –10 – OUTPUT VOLTAGE (V) Figure 19. Input Error Voltage vs. Output Voltage for Resistive Loads ...

Page 9

GAIN –10 –20 –30 10k 100k 1M FREQUENCY (Hz) Figure 25. Open-Loop Gain and Phase Margin vs. Frequency 70 ± 13V SY Ω ...

Page 10

AD8641/AD8642/AD8643 140 120 100 +PSRR –PSRR 20 0 –20 –40 –60 1k 10k 100k FREQUENCY (Hz) Figure 31. PSRR vs. Frequency 1000 = ± 13V +100 100 10 G ...

Page 11

V S Ω 10k 100mV p OS– 100 CAPACITANCE (pF) Figure 37. Small Signal Overshoot vs. Load ...

Page 12

AD8641/AD8642/AD8643 –40 20kΩ –50 2kΩ – – – –70 2kΩ 2kΩ –80 –90 –100 –110 V = 4.5V p-p IN –120 –130 –140 p-p IN –150 –160 20 100 1k FREQUENCY (Hz) Figure ...

Page 13

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 ...

Page 14

AD8641/AD8642/AD8643 IDENTIFIER 4.00 (0.1575) 3.80 (0.1496) 0.25 (0.0098) 0.10 (0.0039) COPLANARITY 0.10 PIN 1 INDICATOR 12° MAX 0.90 0.85 0.80 SEATING PLANE 3.20 3.00 2.80 5. 3.20 4.90 3.00 4.65 1 2.80 4 PIN 1 0.65 BSC 0.95 ...

Page 15

... AD8642ARMZ −40°C to +125°C AD8642ARMZ-REEL −40°C to +125°C AD8642ARZ −40°C to +125°C AD8642ARZ-REEL7 −40°C to +125°C AD8642ARZ-REEL −40°C to +125°C AD8643ARZ −40°C to +125°C AD8643ARZ-REEL7 −40°C to +125°C AD8643ARZ-REEL −40°C to +125°C AD8643ACPZ-R2 − ...

Page 16

AD8641/AD8642/AD8643 NOTES ©2004–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05072-0-11/10(C) Rev Page ...

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