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Data Sheet
FEATURES
Precision, Low Noise, CMOS, Rail-to-Rail,
Input/Output Operational Amplifiers
AD8605/AD8606/AD8608
PIN CONFIGURATIONS
BALL A1
CORNER
OUT 1
V– 2
AD8605
TOP VIEW
(Not to Scale)
5 V+
+IN 3
4 –IN
02731-001
APPLICATIONS
Photodiode amplification
Battery-powered instrumentation
Multipole filters
Sensors
Barcode scanners
Audio
AD8606
TOP VIEW
(BALL SIDE DOWN)
Figure 1. 5-Lead SOT-23 (RJ Suffix)
TOP VIEW
(BUMP SIDE DOWN)
OUT
1
V–
2
+IN
1
Figure 2. 8-Ball WLCSP (CB Suffix)
OUT A
1
–IN A
2
+IN A
3
V+
4
14
OUT D
13
–IN D
V+
5
AD8608
TOP VIEW
(Not to Scale)
12
+IN D
11
V–
10
+IN C
02731-004
GENERAL DESCRIPTION
The
AD8605, AD8606,
and
AD8608
are single, dual, and quad
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
–IN
02731-006
+IN B
5
–IN B
6
OUT B
7
3
4
9
–IN C
8
OUT C
AD8605 ONLY
Figure 3. 5-Ball WLCSP (CB Suffix)
Figure 4. 14-Lead SOIC_N (R Suffix)
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
1
14
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
7
8
Figure 5. 8-Lead MSOP (RM Suffix),
8-Lead SOIC_N (R Suffix)
Figure 6. 14-Lead TSSOP (RU Suffix)
Protected by U.S. Patent No. 5,969,657.
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Technical Support
www.analog.com
Rev. N
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.
02731-002
OUT A
–IN A
+IN A
V–
1
AD8606
8
TOP VIEW
(Not to Scale)
4
5
V+
OUT B
–IN B
+IN B
AD8608
TOP VIEW
(Not to Scale)
02731-003
02731-057
Low offset voltage: 65 μV maximum
Low input bias currents: 1 pA maximum
Low noise: 8 nV/√Hz
Wide bandwidth: 10 MHz
High open-loop gain: 1000 V/mV
Unity gain stable
Single-supply operation: 2.7 V to 5.5 V
5-ball WLCSP for single (AD8605) and 8-ball WLCSP for
dual (AD8606)
OUTA
A1
V+
A2
OUTB
A3
–INA
B1
–INB
B3
+INA
C1
V–
C2
+INB
C3
AD8605/AD8606/AD8608
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Pin Configurations ........................................................................... 1
Revision History ............................................................................... 3
5 V Electrical Specifications ............................................................ 4
2.7 V Electrical Specifications ......................................................... 6
Absolute Maximum Ratings ............................................................ 8
ESD Caution .................................................................................. 8
Typical Performance Characteristics ............................................. 9
Applications Information .............................................................. 16
Output Phase Reversal ............................................................... 16
Maximum Power Dissipation ................................................... 16
Input Overvoltage Protection ................................................... 16
Data Sheet
THD + Noise............................................................................... 16
Total Noise Including Source Resistors ................................... 17
Channel Separation .................................................................... 17
Capacitive Load Drive ............................................................... 17
Light Sensitivity .......................................................................... 18
WLCSP Assembly Considerations ........................................... 18
I-V Conversion Applications ........................................................ 19
Photodiode Preamplifier Applications .................................... 19
Audio and PDA Applications ................................................... 19
Instrumentation Amplifiers ...................................................... 20
DAC Conversion ........................................................................ 20
Outline Dimensions ....................................................................... 21
Ordering Guide .......................................................................... 24
Rev. N | Page 2 of 24
Data Sheet
REVISION HISTORY
4/13—Rev. M to Rev. N
Changes to Input Overvoltage Section and THD + Noise
Section ......................................................................................... 16
Changes to Total Noise Including Source Resistors Section...... 17
Updated Outline Dimensions ................................................... 24
2/13—Rev. L to Rev. M
Updated Outline Dimensions ................................................... 21
Changes to Ordering Guide ...................................................... 24
2/12—Rev. K to Rev. L
Changed Functional Block Diagrams Section to Pin
Configuration Section ................................................................. 1
Changes to Figure 11 ................................................................... 9
Added Figure 33 ......................................................................... 13
8/11—Rev. J to Rev. K
Changes to Figure 20 ................................................................... 2
Updated Outline Dimensions ................................................... 20
Changes to Ordering Guide ...................................................... 23
8/10—Rev. I to Rev. J
Changes to Figure 10 and Figure 11 .......................................... 9
Changes to Figure 15 ................................................................. 10
Changes to Figure 36 ................................................................. 13
Changes to Figure 42 ................................................................. 14
Updated Outline Dimensions ................................................... 20
Changes to Ordering Guide ...................................................... 23
9/08—Rev. H to Rev. I
Changes to Input Overvoltage Protection Section ................ 15
Changes to Ordering Guide ...................................................... 22
2/08—Rev. G to Rev. H
Changes to Features ..................................................................... 1
Changes to Table 1 ....................................................................... 4
Changes to Table 2 ....................................................................... 6
Changes to Figure 11 ................................................................... 9
Changes to Figure 13, Figure 14, and Figure 16 Captions .... 10
Changes to Figure 15, Figure 17, and Figure 18 ..................... 10
Changes to Figure 34 and Figure 35 Captions........................ 13
Changes to Figure 36 ................................................................. 13
Changes to Figure 37 Caption .................................................. 14
Changes to Figure 38 and Figure 41 ........................................ 14
Changes to Figure 45 ................................................................. 15
Changes to Audio and PDA Applications Section ................. 18
Changes to Figure 52 ................................................................. 18
Changes to Ordering Guide ...................................................... 22
10/07—Rev. F to Rev. G
Changes to Figure 2...................................................................... 1
Updated Outline Dimensions ................................................... 20
8/07—Rev. E to Rev. F
Added 8-Ball WLCSP Package ..................................... Universal
Changes to Features ..................................................................... 1
Changes to Table 1 ....................................................................... 3
AD8605/AD8606/AD8608
Changes to Table 2 ........................................................................5
Changes to Table 4 ........................................................................7
Updated Outline Dimensions................................................... 19
Changes to Ordering Guide ...................................................... 21
1/06—Rev. D to Rev. E
Changes to Table 1 ........................................................................3
Changes to Table 2 ........................................................................5
Changes to Table 4 ........................................................................6
Changes to Figure 12 Caption .....................................................8
Changes to Figure 26 and Figure 27 Captions ....................... 11
Changes to Figure 33 Caption .................................................. 12
Changes to Figure 44 ................................................................. 14
Updated Outline Dimensions................................................... 19
Changes to Ordering Guide ...................................................... 20
5/04—Rev. C to Rev. D
Updated Format ............................................................. Universal
Edit to Light Sensitivity Section ............................................... 16
Updated Outline Dimensions................................................... 19
Changes to Ordering Guide ...................................................... 20
7/03—Rev. B to Rev. C
Changes to Features .......................................................................1
Change to General Description....................................................1
Addition to Functional Block Diagrams .....................................1
Addition to Absolute Maximum Ratings ....................................4
Addition to Ordering Guide .........................................................4
Change to Equation in Maximum Power Dissipation
Section .......................................................................................... 11
Added Light Sensitivity Section ................................................ 12
Added New Figure 8; Renumbered Subsequently .................. 13
Added New MicroCSP Assembly Considerations Section .... 13
Changes to Figure 9 .................................................................... 13
Change to Equation in Photodiode Preamplifier
Applications Section .................................................................. 13
Changes to Figure 12 .................................................................. 14
Change to Equation in D/A Conversion Section .................... 14
Updated Outline Dimensions ................................................... 15
3/03—Rev. A to Rev. B
Changes to Functional Block Diagram .......................................1
Changes to Absolute Maximum Ratings.....................................4
Changes to Ordering Guide ........................................................ 4
Changes to Figure 9 ................................................................... 13
Updated Outline Dimensions.................................................... 15
11/02—Rev. 0 to Rev. A
Change to Electrical Characteristics............................................2
Changes to Absolute Maximum Ratings.....................................4
Changes to Ordering Guide .........................................................4
Change to TPC 6 ...........................................................................5
Updated Outline Dimensions.................................................... 15
5/02—Revision 0: Initial Version
Rev. N | Page 3 of 24
AD8605/AD8606/AD8608
5 V ELECTRICAL SPECIFICATIONS
V
S
= 5 V, V
CM
= V
S
/2, T
A
= 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
Symbol
V
OS
V
S
= 3.5 V, V
CM
= 3 V
V
S
= 3.5 V, V
CM
= 2.7 V
V
S
= 5 V, V
CM
= 0 V to 5 V
−40°C < T
A
< +125°C
I
B
−40°C < T
A
< +85°C
−40°C < T
A
< +125°C
−40°C < T
A
< +85°C
−40°C < T
A
< +125°C
I
OS
−40°C < T
A
< +85°C
−40°C < T
A
< +125°C
Input Voltage Range
Common-Mode Rejection Ratio
Large Signal Voltage Gain
Offset Voltage Drift
AD8605/AD8606
AD8608
INPUT CAPACITANCE
Common-Mode Input Capacitance
Differential Input Capacitance
OUTPUT CHARACTERISTICS
Output Voltage High
CMRR
A
VO
ΔV
OS
/ΔT
ΔV
OS
/ΔT
C
COM
C
DIFF
V
OH
I
L
= 1 mA
I
L
= 10 mA
−40°C < T
A
< +125°C
I
L
= 1 mA
I
L
= 10 mA
−40°C < T
A
< +125°C
f = 1 MHz, A
V
= 1
4.96
4.7
4.6
V
CM
= 0 V to 5 V
−40°C < T
A
< +125°C
R
L
= 2 kΩ, V
O
= 0.5 V to 4.5 V
−40°C < T
A
< +125°C
−40°C < T
A
< +125°C
0
85
75
300
100
90
1000
1
1.5
8.8
2.6
4.98
4.79
20
170
±80
1
0.1
20
20
80
0.2
Conditions
Min
Typ
Data Sheet
Max
Unit
65
75
300
750
1
50
250
100
300
0.5
20
75
5
µV
µV
µV
µV
pA
pA
pA
pA
pA
pA
pA
pA
V
dB
dB
V/mV
µV/°C
µV/°C
pF
pF
V
V
V
mV
mV
mV
mA
Ω
4.5
6.0
Output Voltage Low
V
OL
40
210
290
Output Current
Closed-Loop Output Impedance
POWER SUPPLY
Power Supply Rejection Ratio
AD8605/AD8606
AD8605/AD8606
WLCSP
AD8608
Supply Current/Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Settling Time
Unity Gain Bandwidth Product
Phase Margin
I
OUT
Z
OUT
PSRR
I
SY
V
S
= 2.7 V to 5.5 V
V
S
= 2.7 V to 5.5 V
V
S
= 2.7 V to 5.5 V
−40°C < T
A
< +125°C
I
OUT
= 0 mA
−40°C < T
A
< +125°C
R
L
= 2 kΩ, C
L
= 16 pF
To 0.01%, 0 V to 2 V step, A
V
= 1
80
75
77
70
95
92
92
90
1
1.2
1.4
dB
dB
dB
dB
mA
mA
V/µs
µs
MHz
Degrees
SR
t
S
GBP
Φ
M
5
<1
10
65
Rev. N | Page 4 of 24
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