ADA4627-1_10 AD [Analog Devices], ADA4627-1_10 Datasheet

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ADA4627-1_10

Manufacturer Part Number
ADA4627-1_10
Description
30 V, High Speed, Low Noise, Low Bias Current, JFET Operational Amplifier
Manufacturer
AD [Analog Devices]
Datasheet
FEATURES
Low offset voltage: 200 µV maximum
Offset drift: 1 µV/°C typical
Very low input bias current: 5 pA maximum
Extended temperature range: −40°C to +125°C
±5 V to ±15 V dual supply
ADA4627-1 GBW: 19 MHz
ADA4637-1 GBW: 79 MHz
Voltage noise: 6.1 nV/√Hz at 1 kHz
ADA4627-1 slew rate: 82 V/µs
ADA4637-1 slew rate: 170 V/µs
High gain: 120 dB typical
High CMRR: 116 dB typical
High PSRR: 112 dB typical
APPLICATIONS
High impedance sensors
Photodiode amplifier
Precision instrumentation
Phase-locked loop filters
High end, professional audio
DAC output amplifier
ATE
Medical
GENERAL DESCRIPTION
The ADA4627-1/ADA4637-1 are wide bandwidth precision
amplifiers featuring low noise, very low offset, drift, and bias
current. The parts operate from ±5 V to ±15 V dual supply.
The ADA4627-1/ADA4637-1 provide benefits previously found
in few amplifiers. These amplifiers combine the best specifications
of precision dc and high speed ac op amps. The ADA4637-1 is
a decompensated version of the ADA4627-1 and is stable at a
noise gain of 5 or greater.
With a typical offset voltage of only 70 µV, drift of less than
1 µV/°C, and noise of only 0.86 µV p-p (0.1 Hz to 10 Hz), the
ADA4627-1/ADA4637-1 are suited for applications where error
sources cannot be tolerated.
Table 1. High Speed Precision Op Amps
Supply
Single
Dual
Quad
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.
5 V Low Cost
AD8615
AD8616
AD8618
5 V
AD8651
AD8652
30 V, High Speed, Low Noise, Low Bias
Current, JFET Operational Amplifier
26 V Low Power
AD8610
AD8620
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The ADA4627-1/ADA4637-1 are specified for both the
industrial temperature range of −25°C to +85°C and the
extended industrial temperature range of −40°C to +125°C. The
ADA4627-1 is available in tiny 8-lead LFCSP and 8-lead SOIC
packages, and the ADA4637-1 is available in tiny 8-lead SOIC
packages.
The ADA4627-1/ADA4637-1 are members of a growing series
of high speed, precision op amps offered by Analog Devices,
Inc. (see Table 1).
ADA4627-1/ADA4637-1
NC
–IN
+IN
NOTES
1. NC = NO CONNECT.
2. IT IS RECOMMENDED
30 V Low Cost
AD8510
AD8512
AD8513
V–
NULL
NULL
THAT THE EXPOSED PAD BE
CONNECTED TO V–.
Figure 3. 8-Lead LFCSP_VD (CP-8-2)
PIN CONFIGURATIONS
©2009-2010 Analog Devices, Inc. All rights reserved.
–IN
+IN
–IN
+IN
1
2
3
4
V–
V–
Figure 1. 8-Lead SOIC_N (R-8)
Figure 2. 8-Lead SOIC_N (R-8)
NC = NO CONNECT
ADA4627-1
1
2
3
4
1
2
3
4
(Not toScale)
NC = NO CONNECT
TOP VIEW
ADA4637-1
PIN 1
INDICATOR
ADA4627-1
(Not to Scale)
(Not to Scale)
TOP VIEW
TOP VIEW
8 NC
7 V+
6 OUT
5 NC
8
7
6
5
8
7
6
5
30 V
ADA4627-1/ADA4637-1
NC
V+
OUT
NULL
NC
V+
OUT
NULL
www.analog.com

Related parts for ADA4627-1_10

ADA4627-1_10 Summary of contents

Page 1

... The ADA4627-1/ADA4637-1 provide benefits previously found in few amplifiers. These amplifiers combine the best specifications of precision dc and high speed ac op amps. The ADA4637 decompensated version of the ADA4627-1 and is stable at a noise gain greater. With a typical offset voltage of only 70 µV, drift of less than 1 µ ...

Page 2

... ADA4627-1/ADA4637-1 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Pin Configurations ........................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Characteristics—30 V Operation ............................. 3 Absolute Maximum Ratings ............................................................ 5 Thermal Resistance ...................................................................... 5 ESD Caution .................................................................................. 5 Typical Performance Characteristics ............................................. 6 Theory of Operation ...................................................................... 14 REVISION HISTORY 7/10—Rev Rev. C Added ADA4637-1 ............................................................. Universal Added Figure 2; Renumbered Sequentially .................................. 1 Changes to Table 2 ...

Page 3

... T Common-Mode CMRR T Rejection Ratio V −40°C ≤ Large Signal Voltage Gain −40 ≤ T −40 ≤ T DYNAMIC PERFORMANCE Slew Rate ADA4627-1 SR ±10 V step ±10 V step Slew Rate ADA4637-1 SR ±10 V out ±10 V out, C Min ≤ +85°C A ≤ ...

Page 4

... kΩ pF kΩ pF ADA4627 ≤ +125° kΩ 12 ≤ +85°C 11.8 A ≤ +125°C 11 kΩ ≤ +85°C A ≤ +125° ± ...

Page 5

... Table 4. Thermal Resistance SY Indefinite Package Type −65°C to +150°C 8-Lead SOIC_N (R-8) −40°C to +125°C 8-Lead LFCSP (CP-8-2) −65°C to +150°C 300°C ESD CAUTION 4 kV Rev Page ADA4627-1/ADA4637-1 θ θ Unit JA JC 155 45 °C °C/W ...

Page 6

... ±15V SY 1k 10k 100k 1M FREQUENCY (Hz) Figure 7. Open-Loop Gain and Phase vs. Frequency 100 – –100 –1 V 0.1 ADA4627 25° 100 1k 10k 100k 1M FREQUENCY (Hz) Figure 8. Closed-Loop Z vs. Frequency OUT 150 100 50 0 –50 ADA4627 25° ± ...

Page 7

... Rev Page ADA4627-1/ADA4637-1 ADA4627 ±15V ±11.5V CM – 100 TEMPERATURE (°C) Figure 13. CMRR vs. Temperature ADA4627 25° ±15V SY 0.01 0 (mA) LOAD Figure 14. V Sinking vs. I Current OUT LOAD ADA4627 25° ± ...

Page 8

... ADA4627 25° ±15V 810mV 600Ω L 80kHz FILTER 0.001 0.0001 0.00001 0.01 0.1 1 FREQUENCY (kHz) Figure 19. THD + N vs. Frequency 10,000 ADA4627 ±15V SY 1,000 MEASURED 100 10 EXTRAPOLATED 1 0.0647x y = 0.2895 0.9991 0 TEMPERATURE (°C) Figure 20. Input Bias Current vs. Temperature ...

Page 9

... – 20V p 2kΩ 10pF 1kΩ 1nF L TIME (1µs/DIV) Figure 25. Large Signal Transient Response ADA4627 25° 20V p 0Ω F TIME (200ns/DIV) Figure 26. Large Signal Transient Response ADA4627 25° – ...

Page 10

... TIME (200ns/DIV) Figure 30. Small Signal Transient Response 1 ADA4627 Figure 31. Small Signal Transient Response 1 ADA4627 Figure 32. Small Signal Transient Response 1 Figure 33. Small Signal Transient Response Rev Page 25°C = –1 = 200mV p 2kΩ ...

Page 11

... ADA4627-1/ADA4637-1 ADA4627 25° ± OUT V IN TIME (200ns/DIV) Figure 37. Positive Settling Time to 0.01% ADA4627 25° ±15V SY DUT GAIN = 100 4TH ORDER BAND PASS FIXTURE GAIN = 10k TOTAL GAIN = 1M TIME (1s/DIV) Figure 38. 0 Noise ADA4637 ±15V ...

Page 12

... ADA4627-1/ADA4637-1 120 PSRR+ 100 PSRR– ADA4637 ±15V 25° 100 1k 10k 100k FREQUENCY (Hz) Figure 40. PSRR vs. Frequency + ADA4637 ±15V 1kΩ 4.8pF 25ºC A –10 100 1k 10k 100k FREQUENCY (Hz) Figure 41 ...

Page 13

... FREQUENCY (Hz) Figure 46. Voltage Noise Density vs. Frequency ADA4637 ±15V 25°C A 10k 100k Rev Page ADA4627-1/ADA4637-1 ...

Page 14

... ADA4627-1/ADA4637-1 THEORY OF OPERATION The ADA4627 high speed, unity gain stable amplifier with excellent dc characteristics. The ADA4637 decompensated version that is stable at a gain greater. The typical offset voltage of 70 µV allows the amplifiers to be easily configured for high gains without the risk of excessive output voltage errors. The small temperature drift of 2 µ ...

Page 15

... PRINTED CIRCUIT BOARD LAYOUT, BIAS CURRENT, AND BYPASSING To take advantage of the very low input bias current of the ADA4627-1/ADA4637-1 at room temperature, leakage paths must be considered. A printed circuit board (PCB), with dust and humidity, can have 100 MΩ of resistance over a few tenths of an inch ...

Page 16

... DRIVING CAPACITIVE LOADS Adding capacitance to the output of any op amp results in addi- tional phase shift, which reduces stability and leads to overshoot or oscillation. The ADA4627-1/ADA4637-1 have a high phase margin and low output impedance, so they can drive reasonable values of capacitance. This is a common situation when an amplifier is used to drive the input of switched capacitor ADCs ...

Page 17

... CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. Figure 53. 8-Lead Standard Small Outline Package [SOIC_N] Narrow Body (R-8) Dimensions shown in millimeters and (inches) Rev Page ADA4627-1/ADA4637-1 0.50 BSC 5 8 1.60 EXPOSED 1.45 PAD 1 ...

Page 18

... ADA4627-1ACPZ-RL −40°C to +125°C ADA4627-1ACPZ-R7 −40°C to +125°C ADA4627-1ARZ −40°C to +125°C ADA4627-1ARZ-RL −40°C to +125°C ADA4627-1ARZ-R7 −40°C to +125°C ADA4627-1BRZ −40°C to +125°C ADA4627-1BRZ-R7 −40°C to +125°C ADA4627-1BRZ-RL −40°C to +125°C ADA4637-1ARZ − ...

Page 19

... NOTES Rev Page ADA4627-1/ADA4637-1 ...

Page 20

... ADA4627-1/ADA4637-1 NOTES ©2009-2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D07559-0-7/10(C) Rev Page ...

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