AD8620AR Analog Devices Inc, AD8620AR Datasheet

IC OPAMP JFET 25MHZ DUAL 8SOIC

AD8620AR

Manufacturer Part Number
AD8620AR
Description
IC OPAMP JFET 25MHZ DUAL 8SOIC
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD8620AR

Slew Rate
60 V/µs
Mounting Type
Surface Mount
Rohs Status
RoHS non-compliant
Design Resources
Using AD7328 in Appls with Single-Ended Industrial-Level Signals (CN0047)
Amplifier Type
J-FET
Number Of Circuits
2
Gain Bandwidth Product
25MHz
Current - Input Bias
3pA
Voltage - Input Offset
85µV
Current - Supply
3mA
Current - Output / Channel
45mA
Voltage - Supply, Single/dual (±)
±5 V ~ 13 V
Operating Temperature
-40°C ~ 125°C
Package / Case
8-SOIC (3.9mm Width)
No. Of Amplifiers
2
Bandwidth
25MHz
No. Of Pins
8
Peak Reflow Compatible (260 C)
No
Input Bias Current
3nA
Input Offset Voltage Max
85µV
Output Type
-
-3db Bandwidth
-
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD8620AR
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
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Manufacturer:
ADI
Quantity:
643
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Manufacturer:
AD
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Part Number:
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Part Number:
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Manufacturer:
AD
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Part Number:
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Quantity:
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FEATURES
Low noise: 6 nV/√Hz
Low offset voltage: 100 μV maximum
Low input bias current: 10 pA maximum
Fast settling: 600 ns to 0.01%
Low distortion
Unity gain stable
No phase reversal
Dual-supply operation: ±5 V to ±13 V
APPLICATIONS
Photodiode amplifiers
ATE
Instrumentation
Sensors and controls
High performance filters
Fast precision integrators
High performance audio
GENERAL DESCRIPTION
The AD8610/AD8620 are very high precision JFET input ampli-
fiers featuring ultralow offset voltage and drift, very low input
voltage and current noise, very low input bias current, and wide
bandwidth. Unlike many JFET amplifiers, the AD8610/AD8620
input bias current is low over the entire operating temperature
range. The AD8610/AD8620 are stable with capacitive loads of
over 1000 pF in noninverting unity gain; much larger capacitive
loads can be driven easily at higher noise gains. The AD8610/
AD8620 swing to within 1.2 V of the supplies even with a 1 kΩ
load, maximizing dynamic range even with limited supply volt-
ages. Outputs slew at 50 V/μs in either inverting or noninverting
gain configurations, and settle to 0.01% accuracy in less than
600 ns. Combined with high input impedance, great precision,
and very high output drive, the AD8610/AD8620 are ideal
amplifiers for driving high performance ADC inputs and
buffering DAC converter outputs.
Rev. F
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.
Bandwidth JFET Operational Amplifiers
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
Applications for the AD8610/AD8620 include electronic instru-
ments; ATE amplification, buffering, and integrator circuits;
CAT/MRI/ultrasound medical instrumentation; instrumentation
quality photodiode amplification; fast precision filters (including
PLL filters); and high quality audio.
The AD8610/AD8620 are fully specified over the extended
industrial temperature range (−40°C to +125°C). The AD8610
is available in the narrow 8-lead SOIC and the tiny 8-lead MSOP
surface-mount packages. The AD8620 is available in the narrow
8-lead SOIC package. The 8-lead MSOP packaged devices are
avail-able only in tape and reel.
Low Input Bias Current, Wide
Precision, Very Low Noise,
Figure 1. 8-Lead MSOP and 8-Lead SOIC_N
NULL
OUTA
PIN CONFIGURATIONS
©2001–2008 Analog Devices, Inc. All rights reserved.
–INA
+INA
–IN
+IN
V–
V–
Figure 2. 8-Lead SOIC_N
1
2
3
4
NC = NO CONNECT
1
2
3
4
(Not to Scale)
(Not to Scale)
AD8610
TOP VIEW
AD8620
TOP VIEW
AD8610/AD8620
8
7
6
5
8
7
6
5
NC
V+
OUT
NULL
V+
OUTB
–INB
+INB
www.analog.com

Related parts for AD8620AR

AD8620AR Summary of contents

Page 1

FEATURES Low noise: 6 nV/√Hz Low offset voltage: 100 μV maximum Low input bias current maximum Fast settling: 600 ns to 0.01% Low distortion Unity gain stable No phase reversal Dual-supply operation: ± ±13 V APPLICATIONS ...

Page 2

AD8610/AD8620 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Pin Configurations ........................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Specifications ............................................................... 4 REVISION HISTORY 5/08—Rev Rev. F Changes to Figure 17 ...

Page 3

SPECIFICATIONS @ V = ±5 25°C, unless otherwise noted Table 1. Parameter INPUT CHARACTERISTICS Offset Voltage (AD8610B) Offset Voltage (AD8620B) Offset Voltage (AD8610A/AD8620A) Input Bias Current Input Offset Current Input ...

Page 4

AD8610/AD8620 ELECTRICAL SPECIFICATIONS @ V = ± 25°C, unless otherwise noted Table 2. Parameter INPUT CHARACTERISTICS Offset Voltage (AD8610B) Offset Voltage (AD8620B) Offset Voltage (AD8610A/AD8620A) Input Bias Current Input Offset ...

Page 5

ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Supply Voltage Input Voltage Differential Input Voltage Output Short-Circuit Duration to GND Storage Temperature Range Operating Temperature Range Junction Temperature Range Lead Temperature (Soldering, 10 sec) Stresses above those listed under Absolute Maximum Ratings ...

Page 6

AD8610/AD8620 TYPICAL PERFORMANCE CHARACTERISTICS –250 –150 –50 50 INPUT OFFSET VOLTAGE (µV) Figure 3. Input Offset Voltage 600 400 200 0 –200 –400 –600 –40 25 TEMPERATURE (°C) Figure 4. Input Offset ...

Page 7

SUPPLY VOLTAGE (±V) Figure 9. Supply Current vs. Supply Voltage 3.05 2.95 2.85 2.75 2.65 2.55 – TEMPERATURE (°C) Figure 10. ...

Page 8

AD8610/AD8620 12. ±13V 1kΩ L 12.00 11.95 11.90 11.85 11.80 –40 25 TEMPERATURE (°C) Figure 15. Output Voltage High vs. Temperature –11.80 –11.85 –11.90 –11.95 –12.00 –12.05 –40 25 TEMPERATURE (°C) Figure 16. Output Voltage ...

Page 9

FREQUENCY (Hz) Figure 21. PSRR vs. Frequency 160 140 120 100 +PSRR 80 –PSRR –20 –40 100 1k ...

Page 10

AD8610/AD8620 TIME (1s/DIV) Figure 27. 0 Input Voltage Noise 1000 100 100 1k FREQUENCY (Hz) Figure 28. Input Voltage Noise Density vs. Frequency 100 GAIN ...

Page 11

V = ± 2kΩ 100mV +OS – 100 1k CAPACITANCE (pF) Figure 33. Small Signal Overshoot vs. Load Capacitance V = ±13V ...

Page 12

AD8610/AD8620 TIME (400ns/DIV) Figure 39. +Slew Rate − ±13V S V p-p = 20V – 2kΩ 55V/µ 20pF L Rev Page 12 ...

Page 13

THEORY OF OPERATION CS (dB log ( × OUT IN +13V V– 5 20V p-p – 2kΩ 2kΩ U2 –13V Figure 41. Channel Separation Test ...

Page 14

AD8610/AD8620 Driving Large Capacitive Loads The AD8610/AD8620 have excellent capacitive load driving capability and can safely drive when operating with a ±5.0 V supply. Figure 44 and Figure 45 compare the AD8610/ AD8620 against the OPA627 ...

Page 15

Slew Rate (Unity Gain Inverting vs. Noninverting) Amplifiers generally have a faster slew rate in an inverting unity gain configuration due to the absence of the differential input capacitance. Figure 49 through Figure 52 show the performance of the AD8610/AD8620 ...

Page 16

AD8610/AD8620 The slew rate of the AD8610/AD8620 is double that of the OPA627 when configured in a unity gain of +1 (see Figure 53 and Figure 54 85V/µs TIME (400ns/DIV) Figure 53. +Slew Rate of AD8610/AD8620 in Unity ...

Page 17

THD Readings vs. Common-Mode Voltage Total harmonic distortion of the AD8610/AD8620 is well below 0.0006% with any load down to 600 Ω. The AD8610 outperforms the OPA627 for distortion, especially at frequencies above 20 kHz. 0.1 0.01 0.001 0.0001 10 ...

Page 18

AD8610/AD8620 The AD8610/AD8620 maintain this fast settling time when loaded with large capacitive loads, as shown in Figure 62. 3.0 ERROR BAND = ±0.01% 2.5 2.0 1.5 1.0 0 500 1000 C (pF) L Figure 62. AD8610/AD8620 Settling ...

Page 19

Input Offset Voltage Adjustment Offset of AD8610 is very small and normally does not require additional offset adjustment. However, the offset adjust pins can be used as shown in Figure 66 to further reduce the dc offset. By using resistors ...

Page 20

AD8610/AD8620 High Speed Instrumentation Amplifier The 3-op-amp instrumentation amplifiers shown in Figure 68 can provide a range of gains from unity up to 1000 or higher. The instrumentation amplifier configuration features high common- mode rejection, balanced differential inputs, and stable, ...

Page 21

High Speed, Low Noise Differential Driver The AD8620 is a perfect candidate as a low noise differential driver for many popular ADCs. There are also other applica- tions (such as balanced lines) that require differential drivers. The circuit of Figure ...

Page 22

... AD8620AR −40°C to +125°C AD8620AR-REEL −40°C to +125°C AD8620AR-REEL7 −40°C to +125°C 1 AD8620ARZ −40°C to +125°C 1 AD8620ARZ-REEL −40°C to +125°C AD8620ARZ-REEL7 1 −40°C to +125°C AD8620BR −40°C to +125°C AD8620BR-REEL −40°C to +125°C AD8620BR-REEL7 − ...

Page 23

NOTES Rev Page AD8610/AD8620 ...

Page 24

AD8610/AD8620 NOTES ©2001–2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D02730-0-5/08(F) Rev Page ...

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