AD8606 Analog Devices, AD8606 Datasheet

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AD8606

Manufacturer Part Number
AD8606
Description
Precision, Low Noise, RRIO, CMOS Op Amp (Dual)
Manufacturer
Analog Devices
Datasheet

Specifications of AD8606

Vcc-vee
2.7V to 6V
Isy Per Amplifier
1.2mA
Packages
SOIC,SOP
-3db Bandwidth
10MHz
Slew Rate
5V/µs
Vos
20µV
Ib
200fA
# Opamps Per Pkg
2
Input Noise (nv/rthz)
6.5nV/rtHz

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FEATURES
Low offset voltage: 65 μV maximum
Low input bias currents: 1 pA maximum
Low noise: 8 nV/√Hz
Wide bandwidth: 1000 V/mV
High open-loop gain: 120 dB
Unity gain stable
Single-supply operation: 2.7 V to 5.5 V
5-ball WLCSP for single (AD8605), and 8-ball WLCSP for
GENERAL DESCRIPTION
The AD8605, AD8606, and AD8608
rail-to-rail input and output, single-supply amplifiers. They
feature very low offset voltage, low input voltage and current
noise, and wide signal bandwidth. They use the Analog Devices,
Inc. patented DigiTrim® trimming technique, which achieves
superior precision without laser trimming.
The combination of low offsets, low noise, very low input bias
currents, and high speed makes these amplifiers useful in a
wide variety of applications. Filters, integrators, photodiode
amplifiers, and high impedance sensors all benefit from the
combination of performance features. Audio and other ac
applications benefit from the wide bandwidth and low
distortion. Applications for these amplifiers include optical
control loops, portable and loop-powered instrumentation,
and audio amplification for portable devices.
The AD8605, AD8606, and AD8608 are specified over the
extended industrial temperature range (−40°C to +125°C). The
AD8605 single is available in 5-lead SOT-23 and 5-ball WLCSP
packages. The AD8606 dual is available in an 8-lead MSOP, an
8-ball WLSCP, and a narrow SOIC surface-mounted package.
The AD8608 quad is available in a 14-lead TSSOP package and
a narrow 14-lead SOIC package. The 5-ball and 8-ball WLCSP
offer the smallest available footprint for any surface-mounted
operational amplifier. The WLCSP, SOT-23, MSOP, and TSSOP
versions are available in tape-and-reel only.
1
Rev. G
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.
Protected by U.S. Patent No. 5,969,657; other patents pending.
dual (AD8606)
1
are single, dual, and quad
Precision, Low Noise, CMOS, Rail-to-Rail,
Input/Output 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
Photodiode amplification
Battery-powered instrumentation
Multipole filters
Sensors
Barcode scanners
Audio
OUT A
–IN A
+IN A
Figure 1. 5-Lead SOT-23 (RJ Suffix)
Figure 5. 8-Lead MSOP (RM Suffix)
Figure 3. 5-Ball WLCSP (CB Suffix)
V–
OUT
+IN
V–
8-Lead SOIC_N (R Suffix)
(BUMP SIDE DOWN)
1
2
3
AD8605 ONLY
1
(Not to Scale)
4
(Not to Scale)
AD8606
TOP VIEW
OUT
TOP VIEW
+IN
AD8605
TOP VIEW
AD8605/AD8606/AD8608
FUNCTIONAL BLOCK DIAGRAMS
3
1
V–
2
–IN
V+
5
4
©2002–2007 Analog Devices, Inc. All rights reserved.
8
5
5
4 –IN
V+
V+
OUT B
–IN B
+IN B
OUT B
OUT A
OUT B
OUT A
Figure 6. 14-Lead TSSOP (RU Suffix)
Figure 4. 14-Lead SOIC_N (R Suffix)
+IN A
+IN B
–IN B
–IN A
+IN A
+IN B
–IN B
Figure 2. 8-Ball WLCSP (CB Suffix)
–IN A
V+
V+
1
2
3
4
5
6
7
BALL A1
CORNER
OUTA
–INA
+INA
(BALL SIDE DOWN)
A1
B1
C1
(Not to Scale)
1
(Not to Scale)
7
AD8608
TOP VIEW
AD8608
TOP VIEW
TOP VIEW
AD8606
www.analog.com
V+
A2
V–
C2
14
8
OUTB
+INB
–INB
A3
B3
C3
14
13
12
11
10
9
8
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C

Related parts for AD8606

AD8606 Summary of contents

Page 1

... The AD8605 single is available in 5-lead SOT-23 and 5-ball WLCSP packages. The AD8606 dual is available in an 8-lead MSOP, an 8-ball WLSCP, and a narrow SOIC surface-mounted package. The AD8608 quad is available in a 14-lead TSSOP package and a narrow 14-lead SOIC package ...

Page 2

... AD8605/AD8606/AD8608 TABLE OF CONTENTS Features .............................................................................................. 1 General Description ......................................................................... 1 Applications....................................................................................... 1 Functional Block Diagrams............................................................. 1 Revision History ............................................................................... Electrical Specifications............................................................ 3 2.7 V Electrical Specifications......................................................... 5 Absolute Maximum Ratings............................................................ 7 ESD Caution.................................................................................. 7 Typical Performance Characteristics ............................................. 8 Applications Information .............................................................. 14 Output Phase Reversal............................................................... 14 Maximum Power Dissipation ................................................... 14 Input Overvoltage Protection ................................................... 14 REVISION HISTORY 10/07—Rev Rev. G Changes to Figure 2 ...

Page 3

... / 25°C, unless otherwise noted Table 1. Parameter INPUT CHARACTERISTICS Offset Voltage AD8605/AD8606 (Except WLCSP) AD8608 AD8605/AD8606/AD8608 Input Bias Current AD8605/AD8606 AD8605/AD8606 AD8608 AD8608 Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain ...

Page 4

... AD8605/AD8606/AD8608 Parameter NOISE PERFORMANCE Peak-to-Peak Noise Voltage Noise Density Current Noise Density Symbol Conditions kHz kHz kHz n Rev Page Min Typ Max Unit 2.3 3.5 μV p nV/√Hz 6.5 nV/√Hz 0.01 pA/√Hz ...

Page 5

... / 25°C, unless otherwise noted Table 2. Parameter INPUT CHARACTERISTICS Offset Voltage AD8605/AD8606 (Except WLCSP) AD8608 AD8605/AD8606/AD8608 Input Bias Current AD8605/AD8606 AD8605/AD8606 AD8608 AD8608 Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift ...

Page 6

... AD8605/AD8606/AD8608 Parameter NOISE PERFORMANCE Peak-to-Peak Noise Voltage Noise Density Current Noise Density Symbol Conditions kHz kHz kHz n Rev Page Min Typ Max Unit 2.3 3.5 μV p nV/√Hz 6.5 nV/√Hz 0.01 pA/√Hz ...

Page 7

... TSSOP (RU) −40°C to +125°C 1 θ is specified for the worst-case conditions, that is, a device soldered circuit board for surface-mount packages. −65°C to +150°C 300°C ESD CAUTION Rev Page AD8605/AD8606/AD8608 1 θ θ Unit JA JC 170 °C/W 240 92 ° ...

Page 8

... TCVOS (µV/°C) Figure 8. AD8608 Input Offset Voltage Drift Distribution 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 TCVOS (µV/°C) Figure 9. AD8605/AD8606 Input Offset Voltage Drift Distribution 100 200 300 –40°C TO +125° 2.5V CM 3.2 3.6 4.0 4.4 4 –40°C TO +125°C ...

Page 9

... –45 50 –90 40 –135 30 –180 –225 20 100M 1k Figure 18. Common-Mode Rejection Ratio (CMRR) vs. Frequency Rev Page AD8605/AD8606/AD8608 4.9V p 25° 2kΩ 10k 100k 1M FREQUENCY (Hz) Figure 16. Closed-Loop Output Voltage Swing V = ±2. ...

Page 10

... AD8605/AD8606/AD8608 140 120 100 –20 –40 –60 1k 10k 100k FREQUENCY (Hz) Figure 19. PSRR vs. Frequency ∞ 25° + 100 CAPACITANCE (pF) Figure 20. Small Signal Overshoot vs. Load Capacitance 2.0 1 2. 0.5 0 –40 – ...

Page 11

... V = ±2. 10kΩ –100 50mV IN 40.2 33.5 26.8 20.1 13.4 6 119.2 104.3 89.4 74.5 59.6 44.7 29.8 14 Rev Page AD8605/AD8606/AD8608 V = ±2.5V S 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 FREQUENCY (kHz) Figure 28. Voltage Noise Density vs. Frequency V = ±2. FREQUENCY (kHz) Figure 29. Voltage Noise Density vs. Frequency V = ±2. ...

Page 12

... AD8605/AD8606/AD8608 1800 25°C 1600 2.7V CM 1400 1200 1000 800 600 400 200 0 –200 –100 0 –300 OFFSET VOLTAGE (µV) Figure 31. Input Offset Voltage Distribution 300 25°C A 200 100 0 –100 –200 –300 0 0 0.9 COMMON-MODE VOLTAGE (V) Figure 32. Input Offset Voltage vs. Common-Mode Voltage ...

Page 13

... CAPACITANCE (pF) Figure 39. Small Signal Overshoot vs. Load Capacitance V 10M 10M 100M Rev Page AD8605/AD8606/AD8608 = 2.7V S TIME (1s/DIV) Figure 40. 0 Input Voltage Noise V = 1.35V 10kΩ 200pF TIME (200ns/DIV) Figure 41. Small Signal Transient Response = 1 ...

Page 14

... Power dissipated causes the die temperature to increase, which can affect the behavior of the IC and the application circuit performance. The absolute maximum junction temperature of the AD8605/ AD8606/AD8608 is 150°C. Exceeding this temperature could damage or destroy the device. The maximum power dissipation of the amplifier is calculated according to − ...

Page 15

... CAPACITIVE LOAD DRIVE The AD860x can drive large capacitive loads without oscillation. Figure 47 shows the output of the AD8606 in response to a 200 mV input signal. In this case, the amplifier is configured in positive unity gain, worst case for stability, while driving a 1000 pF load at its output ...

Page 16

... AD8605/AD8606/AD8608 Figure 49 shows a scope of the output at the snubber circuit. The overshoot is reduced from over 70% to less than 5%, and the ringing is eliminated by the snubber. Optimum values for R and C are determined experimentally. S TIME (10µs/DIV) Figure 49. Capacitive Load Drive with Snubber Table 5 summarizes a few optimum values for capacitive loads. ...

Page 17

... C1 and C2 are used to ac couple the input signal. C1 and R2 form a high-pass filter whose corner frequency is 1/2πR1C1. The high output current of the AD8606 allows it to drive heavy resistive loads. The circuit in Figure 52 is tested to drive a 16 Ω headphone. The can be ignored ...

Page 18

... DAC. The first stage is used as a buffer. Capacitor C1 with Req creates a low-pass filter, and thus, provides phase lead to compensate for frequency response. The second stage of the AD8606 is used to provide voltage gain at the output of the buffer. Grounding the positive input terminals in both stages reduces ...

Page 19

... Dimensions shown in millimeters 3.20 3.00 2.80 5. 3.20 4.90 3.00 4.65 2. PIN 1 0.65 BSC 0.95 0.85 1.10 MAX 0.75 8° 0.15 0.38 0.23 0° 0.00 0.22 0.08 COPLANARITY SEATING 0.10 PLANE COMPLIANT TO JEDEC STANDARDS MO-187-AA Figure 59. 8-Lead Mini Small Outline Package [MSOP] (RM-8) Dimensions shown in millimeters Rev Page AD8605/AD8606/AD8608 0. 0.20 0.50 BOTTOM VIEW (BALL SIDE UP) 10° 5° 0.60 0° 0.45 0.30 0.80 0.60 0.40 ...

Page 20

... AD8605/AD8606/AD8608 0.25 (0.0098) 0.10 (0.0040) COPLANARITY BALL 1 IDENTIFIER (BALL SIDE DOWN) 4.00 (0.1575) 3.80 (0.1496) 0.25 (0.0098) 0.10 (0.0039) COPLANARITY 0.10 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° 0° 0.51 (0.0201) 0.10 0.31 (0.0122) 0.25 (0.0098) SEATING PLANE 0.17 (0.0067) COMPLIANT TO JEDEC STANDARDS MS-012-A A 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 ...

Page 21

... AD8606AR-REEL −40°C to +125°C AD8606AR-REEL7 −40°C to +125°C AD8606ARZ 1 −40°C to +125°C 1 AD8606ARZ-REEL −40°C to +125°C 1 AD8606ARZ-REEL7 −40°C to +125°C 1 AD8606ACBZ-REEL −40°C to +125°C 1 AD8606ACBZ-REEL7 −40°C to +125°C AD8608AR −40°C to +125°C AD8608AR-REEL − ...

Page 22

... AD8605/AD8606/AD8608 NOTES Rev Page ...

Page 23

... NOTES AD8605/AD8606/AD8608 Rev Page ...

Page 24

... AD8605/AD8606/AD8608 NOTES ©2002–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D02731-0-10/07(G) Rev Page ...

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