REV. PrA
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Precision 20 MHz CMOS Rail-to-Rail
Input/Output Operational Amplifiers
Preliminary Technical Data
AD8615/AD8616/AD8618
FEATURES
Low Offset Voltage: 80
V typ. 300
V max
Single-Supply Operation: 2.7 to 6 Volts
Low Noise: 8 nV/
Hz
Wide Bandwidth: 20 MHz
Slew Rate: 12 V/
s
Low Distortion
No Phase Reversal
Low Input Bias Currents
Unity Gain Stable
APPLICATIONS
Barcode Scanners
Battery Powered Instrumentation
Multi-pole Filters
Sensors
ASIC Input or Output Amplifier
Audio
Photodiode amplification
GENERAL DESCRIPTION
The AD8615, AD8616 and AD8618 are single, dual and quad
rail-to-rail input and output single supply amplifiers featuring
very low offset voltage, wide signal bandwidth, and low input
voltage and current noise. These amplifiers use a patented
trimming technique that achieves superior precision without
laser trimming. All are fully specified to operate from +3V to
+5V single supply.
The combination of low offsets, low noise, very low input bias
currents, and high speed make these amplifiers useful in a wide
variety of applications. Filters, integrators, photo-diode
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 Portable and loop-
powered instrumentation, audio amplification for portable
devices, portable phone headsets, bar code scanners, and
multi-pole filters. The ability to swing rail-to-rail at both the
input and output enables designers to buffer CMOS ADCs,
DACs, ASICs and other wide output swing devices in single
supply systems.
The AD8615, AD8616 and AD8618 are specified over the
extended industrial (-40 to +125C) temperature range. The
AD8615, single, is available in the tiny 5-lead SOT-23
package. The AD8616, dual, is available in the 8-lead micro-
SOIC and narrow SOIC surface mount packages. The
AD8618, quad, is available in 14-lead TSSOP and narrow 14-
pin SOIC packages.
SOT, MSOP and TSSOP versions are available in tape and
reel only.
PIN CONFIGURATIONS
5-Lead SOT
(RJ-5)
8-Lead MSOP
(RM-8)
8-Lead SO
(R-8)
14-Lead TSSOP
(RU-14)
14-Lead SO
(R-14
)
AD8615
AD8616
AD8616
AD8618
AD8618
Preliminary Technical Data
AD8615/AD8616/AD8618
-
2-
Rev PrA 6/2/03
ELECTRICAL CHARACTERISTICS
(V
S
=+3.0V, V
CM
= V
S
/2, T
A
=+25C unless otherwise noted)
Parameter
Symbol
Conditions
Min
Typ
Max
Units
INPUT CHARACTERISTICS
Offset Voltage
V
OS
V
CM
= 0V to 3V
80
300
V
-40< T
A
< +125C
750
V
Input Bias Current
I
B
0.2
60
pA
-40< T
A
< +85C
100
pA
-40< T
A
< +125C
100
pA
Input Offset Current
I
OS
0.1
30
pA
-40< T
A
< +85C
50
pA
-40< T
A
< +125C
500
pA
Input Voltage Range
0
3
V
Common-Mode Rejection Ratio
CMRR
V
CM
= 0V to 3V
68
83
dB
Large Signal Voltage Gain
A
VO
R
L
= 2 k
V
O
= 0.5V to 2.5V
30
100
V/mV
Offset Voltage Drift
V
OS
/
T
2
V/C
OUTPUT CHARACTERISTICS
Output Voltage High
V
OH
I
L
= 1mA
2.92
2.95
V
-40C < T
A
< +125C
2.88
V
Output Voltage Low
V
OL
I
L
= 1mA
20
35
mV
-40C < T
A
< +125C
50
mV
Output Current
I
OUT
150
mA
Closed Loop Output Impedance
Z
OUT
f=1 MHz, A
V
= 1
12
POWER SUPPLY
Power Supply Rejection Ratio
PSRR
V
S
= 2.7 V to 5.5 V
67
80
dB
Supply Current/Amplifier
I
SY
V
O
= 0V
1.6
2.0
mA
-40< T
A
< +125C
TBD
mA
DYNAMIC PERFORMANCE
Slew Rate
SR
R
L
=2 k
12
V/
s
Settling Time
t
s
To 0.01%
<0.25
s
Gain Bandwidth Product
GBP
20
MHz
Phase Margin
o
40
degrees
NOISE PERFORMANCE
Voltage Noise Density
e
n
f=1kHz
8
nV/
Hz
Voltage Noise Density
e
n
f=10kHz
6
nV/
Hz
Current Noise Density
i
n
f=1kHz
0.05
pA/
Hz
Preliminary Technical Data
AD8615/AD8616/AD8618
-
3-
Rev PrA 6/2/03
ELECTRICAL CHARACTERISTICS
(@ VS=+5.0V, VCM = V
S
/2, TA=+25C unless otherwise noted)
Parameter
Symbol Conditions
Min
Typ
Max
Units
INPUT CHARACTERISTICS
Offset Voltage
V
OS
V
CM
= 0V to 5V
80
300
V
-40< T
A
< +125C
750
V
Input Bias Current
I
B
0.2
60
pA
-40< T
A
< +85C
100
pA
-40< T
A
< +125C
1000
pA
Input Offset Current
I
OS
0.1
30
pA
-40< T
A
< +85C
50
pA
-40< T
A
< +125C
500
pA
Input Voltage Range
0
5
V
Common-Mode Rejection Ratio
CMRR
V
CM
= 0V to 5V
74
89
dB
Large Signal Voltage Gain
A
VO
V
O
= 0.5V to 4.5V,
30
70
V/mV
R
L
= 2 k
, V
CM
= 0V
Offset Voltage Drift
V
OS
/
T
2
V/C
OUTPUT CHARACTERISTICS
Output Voltage High
V
OH
I
L
= 1mA
4.925
4.975
V
I
L
= 10mA
4.7
4.77
V
-40C to +125C
4.6
V
Output Voltage Low
V
OL
I
L
= 1mA
15
30
mV
Output Voltage High
V
OL
I
L
= 10mA
125
175
mV
-40C to +125C
250
mV
Output Current
I
OUT
50
mA
Closed Loop Output Impedance
Z
OUT
f=1 MHz, A
V
= 1
10
POWER SUPPLY
Power Supply Rejection Ratio
PSRR
V
S
= 2.7 V to 5.5 V
67
80
dB
Supply Current/Amplifier
I
SY
V
O
= 0V
1.3
2.0
mA
-40< T
A
< +125C
TBD
mA
DYNAMIC PERFORMANCE
Slew Rate
SR
R
L
=2 k
12
V/
s
Settling Time
t
s
To 0.01%
<.5
s
Full Power Bandwidth
BWp
<1% Distortion
TBD
kHz
Gain Bandwidth Product
GBP
20
MHz
Phase Margin
o
40
degrees
NOISE PERFORMANCE
Voltage Noise Density
e
n
f=1kHz
8
nV/
Hz
Voltage Noise Density
e
n
f=10kHz
6
nV/
Hz
Current Noise Density
i
n
f=1kHz
0.05
pA/
Hz
Preliminary Technical Data
AD8615/AD8616/AD8618
-
4-
Rev PrA 6/2/03
ABSOLUTE MAXIMUM RATINGS
1
Supply voltage...........................................................................+6V
Input Voltage....................................................................Gnd to Vs
Differential Input Voltage .........................................................6V
Output Short-Circuit Duration to Gnd
2
....Observe Derating Curves
Storage Temperature Range
R, RT, RM, RU Package ...............................-65C to +150C
Operating Temperature Range
AD8615/AD8616/AD8618............................-40C to +125C
Junction Temperature Range
R, RT, RM, RU Package ...............................-65C to +150C
Lead Temperature Range (Soldering, 60 Sec) ...............+300C
Package Type
JA
JC
Units
5-Pin SOT-23 (RT)
230
--
C/W
8-Pin microSOIC (RM)
210
45
C/W
8-Pin SOIC (R)
158
43
C/W
14-Pin SOIC (R)
120
36
C/W
14-Pin TSSOP (RU)
180
35
C/W
NOTES
1 Absolute maximum ratings apply at 25C, unless otherwise noted.
2
JA is specified for the worst-case conditions, i.e.,
JAis specified for device soldered in
circuit board for surface mount packages.
ORDERING GUIDE
Model
Temperature
Range
Package
Description
Package
Option
Branding
Information
AD8615ARJ
-40C to +125C
5-Pin SOT-23
RT-5
AD8616ARM
-40C to +125C
8-Pin micro-SOIC
RM-8
AD8616AR
-40C to +125C
8-Pin SOIC
R-8
AD8618AR
-40C to +125C
16-Pin SOIC
R-16
AD8618ARU
-40C to +125C
16-Pin TSSOP
RU-16
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V
readily accumulate on the human body and test equipment and can discharge without
detection. Although this device features proprietary ESD protection circuitry, permanent
damage may occur on devices subjected to high-energy electrostatic discharges. Therefore,
proper ESD precautions are recommended to avoid performance degradation or loss of
functionality.
Preliminary Technical Data
AD8615/AD8616/AD8618
-
5-
Rev PrA 6/2/03
OUTLINE DIMENSIONS
5-Lead SOT-23
(RJ Suffix)
8-Lead ?SOIC
(RM-8)
14-Lead TSSOP
(RU-14)
8-Lead SO
(R-8)
14-Lead SO
(R-14)
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