AD8622 Analog Devices, AD8622 Datasheet

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AD8622

Manufacturer Part Number
AD8622
Description
Dual, Low Power, Low Noise, Low Bias Current, Precision Rail-to-Rail Output Op Amp
Manufacturer
Analog Devices
Datasheet

Specifications of AD8622

-3db Bandwidth
560kHz
Slew Rate
0.48V/µs
Vos
10µV
Ib
45pA
# Opamps Per Pkg
2
Input Noise (nv/rthz)
11nV/rtHz
Vcc-vee
5V to 30V
Isy Per Amplifier
215µA
Packages
SOIC,SOP

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FEATURES
Very low offset voltage
Supply current: 215 μA/amp typical
Input bias current: 200 pA maximum
Low input offset voltage drift: 1.2 μV/°C maximum
Very low voltage noise: 11 nV/√Hz
Operating temperature: −40°C to +125°C
Rail-to-rail output swing
Unity gain stable
±2.5 V to ±15 V operation
APPLICATIONS
Portable precision instrumentation
Laser diode control loops
Strain gage amplifiers
Medical instrumentation
Thermocouple amplifiers
GENERAL DESCRIPTION
The
output operational amplifiers with low supply currents of only
350 µA/amplifier maximum over temperature and supply
voltages. The
cancellation circuitry that provides a very low input bias current
over the full operating temperature.
With a typical offset voltage of only 10 µV, offset drift of 0.5 µV/°C,
and noise of only 0.2 μV p-p (0.1 Hz to 10 Hz), they are
perfectly suited for applications where large error sources
cannot be tolerated. Many systems can take advantage of the
low noise, dc precision, and rail-to-rail output swing provided
by the
and dynamic range for low power operation. The
AD8624
range of −40°C to +125°C. The
8-lead SOIC and MSOP packages, while the
in lead-free 14-lead TSSOP and 16-lead LFCSP 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.
125 μV maximum
AD8622/AD8624
AD8622/AD8624
are specified for the extended industrial temperature
AD8622/AD8624
are dual and quad precision rail-to-rail
to maximize the signal-to-noise ratio
AD8622
also has an input bias current
is available in lead-free
AD8624
AD8622/
is available
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
Table 1. Low Power Op Amps
Supply
Single
Dual
Quad
Rail-to-Rail Output Op Amp
40 V
OP97
OP297
OP497
NOTES
1. NC = NO CONNECT.
2. IT IS RECOMMENDED THAT THE EXPOSED
PAD BE CONNECTED TO V–.
OUT A
–IN A
+IN A
+IN B
+IN A
OUT A
OUT B
–IN A
OUT A
Figure 1. 8-Lead Narrow-Body SOIC
–IN A
+IN A
+IN B
–IN B
PIN CONFIGURATIONS
Low Power, Precision
©2009–2011 Analog Devices, Inc. All rights reserved.
V+
–IN A
+IN A
V–
V+
V–
1
4
2
3
Figure 3. 14-Lead TSSOP
Figure 4. 16-Lead LFCSP
1
2
3
4
Figure 2. 8-Lead MSOP
1
2
3
4
5
6
7
36 V
OP777
OP1177
OP727
OP2177
OP747
OP4177
1
2
3
4
(Not to Scale)
(Not to Scale)
(Not to Scale)
(Not to Scale)
AD8624
TOP VIEW
AD8622
TOP VIEW
AD8622
TOP VIEW
AD8624
TOP VIEW
AD8622/AD8624
12 V to 18 V
AD8663
AD8667
AD8669
8
7
6
5
8
7
6
5
14
13
12
11
10
8
12
10
9
9
11
V+
OUT B
–IN B
+IN B
V+
OUT B
–IN B
+IN B
OUT D
–IN D
+IN D
V–
+IN C
OUT C
–IN C
–IN D
+IN D
V–
+IN C
www.analog.com
6 V
ADA4692-2
ADA4692-4

Related parts for AD8622

AD8622 Summary of contents

Page 1

... AD8624 is available Table 1. Low Power Op Amps Supply Single Dual Quad One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 Fax: 781.461.3113 Low Power, Precision Rail-to-Rail Output Op Amp AD8622/AD8624 PIN CONFIGURATIONS OUT AD8622 –IN A OUT +IN A –IN B ...

Page 2

... AD8622/AD8624 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Pin Configurations ........................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Characteristics—±2.5 V Operation .......................... 3 Electrical Characteristics—±15 V Operation ........................... 4 Absolute Maximum Ratings ............................................................ 5 Thermal Resistance ...................................................................... 5 REVISION HISTORY 6/11—Rev Rev. C Changes to Figure 13 ........................................................................ 7 2/10—Rev Rev. B Changed 16-Lead to 14-Lead in Figure 62 Caption ................... 19 1/10— ...

Page 3

... L V Φ kΩ kHz kHz n_uncorr kHz n_corr Rev Page AD8622/AD8624 Min Typ Max Unit 10 125 μV 230 μV 0.5 1.2 µV/°C 30 200 pA 400 pA 25 200 pA 300 pA −1.3 +1.3 ...

Page 4

... AD8622/AD8624 ELECTRICAL CHARACTERISTICS—±15 V OPERATION V = ± 25°C, unless otherwise specified Table 3. Parameter INPUT CHARACTERISTICS Offset Voltage Offset Voltage Drift Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Open-Loop Gain Input Resistance, Differential Mode ...

Page 5

... Table 3. Thermal Resistance Indefinite Package Type −65°C to +150°C 8-Lead SOIC_N (R-8) −40°C to +125°C 8-Lead MSOP (RM-8) −65°C to +150°C 14-Lead TSSOP (RU-14) 300°C 16-Lead LFCSP (CP-16-17) ESD CAUTION Rev Page AD8622/AD8624 θ θ Unit JA JC 120 45 °C/W 142 45 °C/W 112 35 ° ...

Page 6

... AD8622/AD8624 TYPICAL PERFORMANCE CHARACTERISTICS T = 25°C, unless otherwise noted ±2. –100 –80 –60 –40 – (µV) OS Figure 5. Input Offset Voltage Distribution 0.2 0.4 0.6 TCV (µV/°C) OS Figure 6. Input Offset Voltage Drift Distribution ...

Page 7

... Figure 15. Input Bias Current vs. Common-Mode Voltage 100 0.1 0.01 0.001 0.01 10 100 Figure 16. Output Voltage to Supply Rail vs. Load Current Rev Page AD8622/AD8624 V = ±15V – B – 100 TEMPERATURE (°C) Figure 14. Input Bias Current vs. Temperature V = ±15V SY – ...

Page 8

... AD8622/AD8624 0.06 0.05 V – 0.04 0.03 0.02 V – 0.01 0 –50 – TEMPERATURE (°C) Figure 17. Output Voltage to Supply Rail vs. Temperature 0.35 0.30 +125°C 0.25 +85°C 0.20 +25°C 0.15 –40°C 0.10 0.05 0 –0. (±V) SY Figure 18. Supply Current vs. Supply Voltage 100 80 PHASE 60 40 GAIN 20 0 –20 –40 1k 10k ...

Page 9

... V = ±2. 100 10 1 0.1 1M 100 140 V = ±2.5V SY 120 100 100k 1M 10 Rev Page AD8622/AD8624 V = ±15V SY = 10kΩ 100 10k 100k 1M FREQUENCY (Hz) Figure 26. Closed-Loop Gain vs. Frequency V = ±15V 100 ...

Page 10

... AD8622/AD8624 120 100 PSRR PSRR– 100 1k 10k FREQUENCY (Hz) Figure 29. PSRR vs. Frequency ±2. 10kΩ OS– 0.01 0.1 1 CAPACITANCE (nF) Figure 30. Small-Signal Overshoot vs. Load Capacitance V = ±2. 10kΩ 100pF L TIME (40µ ...

Page 11

... –100 V 0.2 = 10kΩ –1 –2 –3 0.2 0 –0 –1 Rev Page AD8622/AD8624 V = ±15V 10kΩ 100pF L TIME (10µs/DIV) Figure 38. Small-Signal Transient Response V = ±15V –100 V = 10kΩ INPUT OUTPUT TIME (20µ ...

Page 12

... AD8622/AD8624 ±15V – 0. SETTLING TIME (µs) Figure 41. Output Step vs. Settling Time 100 FREQUENCY (Hz) Figure 42. Voltage Noise Density vs. Frequency 0.1 0. FREQUENCY (Hz) Figure 43. Current Noise Density vs. Frequency 0.01 ±2.5V SY 100 ...

Page 13

... AMPLITUDE (V rms) Figure 48. THD + Noise vs. Amplitude V = ±2. ±2. 1kHz = 10kΩ 0.1 0.01 0.001 0.0001 1 10 0.001 Rev Page AD8622/AD8624 V = ±15V SY TIME (1s/DIV) Figure 49. 0 Noise V = ±15V 1kHz = 10kΩ 0.01 0.1 1 AMPLITUDE (V rms) Figure 50. THD + Noise vs. Amplitude 10 ...

Page 14

... AD8622/AD8624 0 ±2. 10kΩ 300mV rms IN 0.01 0.001 0.0001 10 100 1k FREQUENCY (Hz) Figure 51. THD + Noise vs. Frequency 0 100kΩ 1kΩ –20 – –60 –80 –100 –120 –140 10 100 1k FREQUENCY (Hz) Figure 52. Channel Separation vs. Frequency 0.01 0.001 0.0001 10k 100k V = ±2.5V TO ±15V SY = 10kΩ – ...

Page 15

... Figure 56 shows the classic 2-op-amp instrumentation amplifier with four resistors using the AD8622. The key to high CMRR for this instrumentation amplifier are resistors that are well matched from both the resistive ratio and the relative drift. For true difference amplification, matching of the resistor ratio is very important, where R3/R4 = R1/R2 ...

Page 16

... AD8622/AD8624 HALL SENSOR SIGNAL CONDITIONING The AD8622/AD8624 is also highly suitable for high accuracy, low power signal conditioning circuits. One such use is in Hall sensor signal conditioning (see Figure 57). The magnetic sensitivity of a Hall element is proportional to the bias voltage applied across it. With 1 V bias voltage, the Hall element consumes about 2 ...

Page 17

... SIMPLIFIED SCHEMATIC V+ 500Ω + 500Ω –IN x V– INPUT BIAS Q4 CANCELLATION CIRCUITRY Figure 58. Simplified Schematic Rev Page AD8622/AD8624 R3 Q10 Q11 OUT x Q7 Q12 Q9 D4 ...

Page 18

... AD8622/AD8624 OUTLINE DIMENSIONS IDENTIFIER 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 3.20 3.00 2. 5.15 3.20 4.90 3.00 4.65 1 2.80 4 PIN 1 0.65 BSC 0.95 15° MAX 0.85 1.10 MAX 0.75 0.15 0.23 6° 0.40 0.05 0.09 0° 0.25 COPLANARITY 0.10 COMPLIANT TO JEDEC STANDARDS MO-187-AA Figure 59. 8-Lead Mini Small Outline Package [MSOP] (RM-8) 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° ...

Page 19

... AD8622ARMZ-REEL −40°C to +125°C AD8622ARMZ-R7 −40°C to +125°C AD8622ARZ −40°C to +125°C AD8622ARZ-REEL −40°C to +125°C AD8622ARZ-REEL7 −40°C to +125°C AD8624ACPZ-R2 −40°C to +125°C AD8624ACPZ-R7 −40°C to +125°C AD8624ACPZ-RL −40°C to +125°C AD8624ARUZ − ...

Page 20

... AD8622/AD8624 NOTES ©2009–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D07527-0-6/11(C) Rev Page ...

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