40V Precision Single Supply Rail-Rail Output Low
Power Operational Amplifiers
ISL28108, ISL28208
The ISL28108 and ISL28208 are single and dual low power
precision amplifiers optimized for single supply applications.
These devices feature a common mode input voltage range
extending to 0.5V below the V- rail, a rail-to-rail differential
input voltage range for use as a comparator, and rail to rail
output voltage swing, which make them ideal for single supply
applications where input operation at ground is important.
Added features include low offset voltage, and low
temperature drift making them the ideal choice for
applications requiring high DC accuracy. The output stage is
capable of driving large capacitive loads from rail to rail for
excellent ADC driving performance. The devices can operate
for single or dual supply from 3V (±1.5V) to 40V (±20V) and are
fully characterized at ±5V and ±15V. The combination of
precision, low power, and small footprint provides the user with
outstanding value and flexibility relative to similar competitive
parts.
Applications for these amplifiers include precision
instrumentation, data acquisition, precision power supply
control, and industrial control.
The ISL28108 single is offered in 8 Ld TDFN, SOIC and MSOP
packages. The ISL28208 dual amplifier is offered in 8 Ld
TDFN, MSOP, and SOIC packages. All devices are offered in
standard pin configurations and operate over the extended
temperature range to -40°C to +125°C.
Features
• Single or Dual Supply, Rail-to-Rail Output and Below Ground
(V-) input capability
• Rail-to-rail Input Differential Voltage Range for Comparator
Applications
• Single Supply Range . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 40V
• Low Current Consumption (V
S
= ±5V) . . . . . . . . . . . . . . 165µA
• Low Noise Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 15.8nV/√Hz
• Low Noise Current . . . . . . . . . . . . . . . . . . . . . . . . . . . 80fA/√Hz
• Low Input Offset Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 230µV
• Superb Temperature Drift
- Voltage Offset TC . . . . . . . . . . . . . . . . . . . . . . 0.1µV/°C, Typ
• Low Input Bias Current . . . . . . . . . . . . . . . . . . . . . . . -13nA Typ
• Operating Temperature Range. . . . . . . . . . .-40°C to +125°C
• No Phase Reversal
Applications
• Precision Instruments
• Medical Instrumentation
• Data Acquisition
• Power Supply Control
• Industrial Process Control
R
F
LOAD
R
IN
-
R
SENSE
10kΩ
R
IN
+
10kΩ
R
REF
+
100kΩ
V
REF
IN+
IN-
100kΩ
-
V+
ISL28108
V-
+3V
to 40V
500
V
OUT
400
300
200
V
OS
(µV)
100
0
-100
-200
-300
-400
-500
-16
V
S
= ±15V
+125°C
+
GAIN = 10
-40°C
+25°C
-15.5
-15
-14.5 -14 13
13.5
14
14.5
15
SINGLE-SUPPLY, LOW-SIDE CURRENT SENSE AMPLIFIER
INPUT COMMON MODE VOLTAGE (V)
FIGURE 1. TYPICAL APPLICATION CIRCUIT
FIGURE 2. INPUT OFFSET VOLTAGE vs INPUT COMMON MODE
VOLTAGE, V
S
= ±15V
March 17, 2011
FN6935.1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
|
Copyright Intersil Americas Inc. 2011. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
ISL28108, ISL28208
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
Coming Soon
ISL28108FBZ
Coming Soon
ISL28108FRTZ
Coming Soon
ISL28108FUZ
ISL28208FBZ
ISL28208FRTZ
Coming Soon
ISL28208FUZ
NOTES:
1. Add “-T*” suffix for tape and reel. Please refer to
TB347
for details on
reel specifications.
2. These Intersil Pb-free plastic packaged products employ special
Pb-free material sets, molding compounds/die attach materials, and
100% matte tin plate plus anneal (e3 termination finish, which is
RoHS compliant and compatible with both SnPb and Pb-free
soldering operations). Intersil Pb-free products are MSL classified at
Pb-free peak reflow temperatures that meet or exceed the Pb-free
requirements of IPC/JEDEC J STD-020.
3. For Moisture Sensitivity Level (MSL), please see device information
page for
ISL28108,
ISL28208.
For more information on MSL please
see techbrief
TB363.
PART
MARKING
28108 FBZ
108Z
8108Z
28208 FBZ
208Z
8208Z
TEMP. RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
M8.15E
L8.3x3A
M8.118
M8.15E
L8.3x3A
M8.118
NC 1
-IN 2
- +
Pin Configurations
ISL28108
(8 LD TDFN)
TOP VIEW
8 NC
7 V
+
6 V
OUT
5 NC
NC
-IN
+IN
V-
ISL28108
(8 LD MSOP, SOIC)
TOP VIEW
1
2
3
4
- +
8
7
6
5
NC
V+
V
OUT
NC
-40 to +125 8 Ld SOIC
-40 to +125 8 Ld TDFN
-40 to +125 8 Ld MSOP
-40 to +125 8 Ld SOIC
-40 to +125 8 Ld TDFN
-40 to +125 8 Ld MSOP
+IN 3
V- 4
ISL28208
(8 LD TDFN)
TOP VIEW
V
OUT
_A
-IN_A
+IN_A
V-
1
2
3
4
8 V+
ISL28208
(8 LD SOIC, MSOP
TOP VIEW
V
OUT
_A
-IN_A
+IN_A
V-
1
2
3
4
- +
+ -
8 V+
7 V
OUT
_B
6 -IN_B
5 +IN_B
- +
+ -
7 V
OUT_
B
6 -IN_B
5 +IN_B
Pin Descriptions
ISL28108
ISL28108
ISL28208
ISL28208
(8 LD TDFN) (8 LD SOIC, MSOP) (8 LD TDFN) (8 LD SOIC, MSOP)
3
2
3
2
3
2
6
4
6
4
1
4
5
6
7
7
1, 5, 8
7
1, 5, 8
PD
8
3
2
1
4
5
6
7
8
PIN
NAME
+IN
-IN
+IN_A
-IN_A
V
OUT
_A
V-
+IN_B
-IN_B
V
OUT
_B
V+
NC
PD
EQUIVALENT
CIRCUIT
Circuit 1
Circuit 1
Circuit 1
Circuit 1
Circuit 2
Circuit 3
Circuit 1
Circuit 1
Circuit 2
Circuit 3
-
-
DESCRIPTION
Amplifier non-inverting input
Amplifier inverting input
Amplifier A non-inverting input
Amplifier A inverting input
Amplifier A output
Negative power supply
Amplifier B non-inverting input
Amplifier B inverting input
Amplifier B output
Positive power supply
No internal connection
Thermal Pad. Pad has no internal
connections and should be connected to a
good AC ground.
V+
CAPACITIVELY
TRIGGERED ESD
V-
V-
CIRCUIT 2
V-
CIRCUIT 3
V+
IN-
IN+
V+
OUT
CIRCUIT 1
2
FN6935.1
March 17, 2011
ISL28108, ISL28208
Absolute Maximum Ratings
Maximum Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42V
Maximum Differential Input Voltage
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42V or V
-
- 0.5V to V
+
+ 0.5V
Min/Max Input Voltage . . . . . . . . . . . . . . . . . . .42V or V
-
- 0.5V to V
+
+ 0.5V
Max/Min Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20mA
Output Short-Circuit Duration (1 output at a time) . . . . . . . . . . . Indefinite
ESD Tolerance
Human Body Model (Tested per JESD22-A114F) . . . . . . . . . . . . . . . . 6kV
Machine Model (Tested per JESD22-A115-C) . . . . . . . . . . . . . . . . . . 400V
Charged Device Model (Tested per JESD22-C110D) . . . . . . . . . . . . . 2kV
Thermal Information
Thermal Resistance (Typical)
θ
JA
(°C/W)
θ
JC
(°C/W)
8 Ld SOIC Package (108, 208, Notes 4, 6) . .
120
55
8 Ld TDFN Package (208, Notes 5, 6) . . . . . .
48
5.5
8 Ld MSOP Package (208, Notes 4, 6). . . . . .
150
45
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Operating Conditions
Ambient Operating Temperature Range . . . . . . . . . . . . . . -40°C to +125°C
Maximum Operating Junction Temperature . . . . . . . . . . . . . . . . . . +150°C
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3V (±1.5V) to 40V (±20V)
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
4.
θ
JA
is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
5.
θ
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379.
6.
For
θ
JC
,
the “case temp” location is taken at the package top center.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise
noted, all tests are at the specified temperature and are pulsed tests, therefore: T
J
= T
C
= T
A
Electrical Specifications
V
S
±15V, V
CM
= 0, V
O
= 0V, R
L
= Open, T
A
= +25°C, unless otherwise noted. Boldface limits apply over
the operating temperature range, -40°C to +125°C. Temperature data established by characterization.
MIN
PARAMETER
V
OS
DESCRIPTION
Input Offset Voltage
CONDITIONS
(Note
7)
-230
-330
TYP
25
MAX
(Note 7)
230
330
UNIT
µV
µV
µV/
°
C
µV/
°
C
µV
µV
nA
nA
TCV
OS
Input Offset Voltage Temperature
Coefficient
ISL28208 SOIC
-40°C to +125°C
ISL28208 TDFN
-40°C to +125°C
0.1
0.2
-300
-400
-43
-63
-13
5
1.1
1.4
300
400
ΔV
OS
Input Offset Voltage Match
(ISL28208 only)
Input Bias Current
I
B
TCI
B
I
OS
Input Bias Current
Temperature Coefficient
Input Offset Current
-3
-4
70
0
3
4
119
123
102
V
CM
= V
-
to V
+
-1.8V
105
102
123
115
V
+
- 1.8
V
+
- 1.8
pA/
°
C
nA
nA
dB
dB
dB
dB
dB
V
V
CMRR
Common-Mode Rejection Ratio
V
CM
= V
-
-0.5V to V
+
-1.8V
V
CM
= V
-
-0.2V to V
+
-1.8V
V
CMIR
Common Mode Input Voltage
Range
Guaranteed by CMRR test
V
-
- 0.5
V
-
3
FN6935.1
March 17, 2011
ISL28108, ISL28208
V
S
±15V, V
CM
= 0, V
O
= 0V, R
L
= Open, T
A
= +25°C, unless otherwise noted. Boldface limits apply over
the operating temperature range, -40°C to +125°C. Temperature data established by characterization. (Continued)
MIN
PARAMETER
PSRR
DESCRIPTION
Power Supply Rejection Ratio
CONDITIONS
V
S
= 3V to 40V, V
CMIR
= Valid Input Voltage
Electrical Specifications
(Note
7)
110
109
TYP
128
124
126
MAX
(Note 7)
UNIT
dB
dB
dB
dB
A
VOL
Open-Loop Gain
V
O
= -13V to +13V, R
L
= 10kΩ to ground
117
100
V
OL
Output Voltage Low,
V
OUT
to V
-
Output Voltage High,
V
+
to V
OUT
Supply Current/Amplifier
R
L
= 10kΩ
52
85
145
mV
mV
mV
mV
µA
µA
mA
mA
V
OH
R
L
= 10kΩ
70
110
150
I
S
R
L
= Open
185
270
250
350
I
SC+
I
SC-
V
SUPPLY
Output Short Circuit Source
Current
Output Short Circuit Sink Current
Supply Voltage Range
R
L
= 10Ω to V
-
R
L
= 10Ω to V
+
Guaranteed by PSRR
3
19
30
40
V
AC SPECIFICATIONS
GBWP
e
np-p
e
n
e
n
e
n
e
n
i
n
THD + N
Gain Bandwidth Product
Noise Voltage
Noise Voltage Density
Noise Voltage Density
Noise Voltage Density
Noise Voltage Density
Noise Current Density
A
CL
= 101, V
O
= 100mV
P-P
, R
L
= 2kΩ
0.1Hz to 10Hz; V
S
= +18V
f = 10Hz; V
S
= +18V
f = 100Hz; V
S
= +18V
f = 1kHz; V
S
= +18V
f = 10kHz; V
S
= +18V
f = 10kHz; V
S
= +18V
1.2
580
18
16
15.8
15.8
80
0.00042
MHz
nVP-P
nV/√Hz
nV/√Hz
nV/√Hz
nV/√Hz
fA/√Hz
%
Total Harmonic Distortion + Noise 1kHz, A
V
= 1, V
O
= 3.5V
RMS
, R
L
=10kΩ
TRANSIENT RESPONSE
SR
t
r
, t
f
, Small
Signal
Slew Rate, V
OUT
20% to 80%
Rise Time, V
OUT
10% to 90%
Fall Time, V
OUT
90% to 10%
t
s
Settling Time to 0.01%
10V Step; 10% to V
OUT
A
V
= 1, R
L
= 2kΩ, V
O
= 10V
P-P
A
V
= 1, V
OUT
= 100mV
P-P
, R
f
= 0Ω, R
L
= 2kΩ to
V
CM
A
V
= 1, V
OUT
= 100mV
P-P
, R
f
= 0Ω, R
L
= 2kΩ to
V
CM
A
V
= -1, V
OUT
= 10V
P-P
, R
g
= R
f
=10k, R
L
= 2kΩ to
V
CM
0.45
264
254
27
V/µs
ns
ns
µs
4
FN6935.1
March 17, 2011
ISL28108, ISL28208
V
S
±5V, V
CM
= 0, V
O
= 0V, T
A
= +25°C, unless otherwise noted. Boldface limits apply over the
operating temperature range, -40°C to +125°C. Temperature data established by characterization.
MIN
PARAMETER
V
OS
DESCRIPTION
Offset Voltage
CONDITIONS
Electrical Specifications
(Note
7)
-230
-330
TYP
25
MAX
(Note 7)
230
330
UNIT
µV
µV
µV/
°
C
µV/
°
C
µV
µV
nA
nA
TCV
OS
Input Offset Voltage Temperature
Coefficient
ISL28208 SOIC
-40°C to +125°C
ISL28208 TDFN
-40°C to +125°C
0.1
0.2
-300
-400
-43
-63
-15
3
1.1
1.4
300
400
ΔV
OS
Input Offset Voltage Match
(ISL28208 only)
Input Bias Current
I
B
TCI
B
I
OS
Input Bias Current
Temperature Coefficient
Input Offset Current
-40°C to +125°C
-3
-4
-67
0
3
4
101
123
89
pA/
°
C
nA
nA
dB
dB
dB
dB
dB
V
+
- 1.8
V
+
- 1.8
V
V
dB
dB
dB
dB
CMRR
Common-Mode Rejection Ratio
V
CM
= V
-
-0.5V to V
+
-1.8V
V
CM
= V
-
-0.2V to V
+
-1.8V
V
CM
= V
-
to V
+
-1.8V
105
100
123
112
V
CMIR
Common Mode Input Voltage
Range
Power Supply Rejection Ratio
Guaranteed by CMRR test
V
-
- 0.5
V
-
PSRR
V
S
= 3V to 10V, V
CMIR
= Valid Input Voltage
V
O
= -3V to +3V, R
L
= 10kΩ to ground
110
109
126
123
124
A
VOL
Open-Loop Gain
117
99
V
OL
Output Voltage Low,
V
OUT
to V
-
Output Voltage High,
V
+
to V
OUT
Supply Current/Amplifier
R
L
= 10kΩ
23
38
48
mV
mV
mV
mV
µA
µA
mA
mA
V
OH
R
L
= 10kΩ
30
65
70
I
S
R
L
= Open
165
240
250
350
I
SC+
I
SC-
GBW
e
np-p
e
n
e
n
e
n
e
n
i
n
Output Short Circuit Source Current R
L
= 10Ω to V
-
Output Short Circuit Sink Current
R
L
= 10Ω to V
+
A
CL
= 101, V
O
= 100mV
P-P
, R
L
= 2kΩ
0.1Hz to 10Hz
f = 10Hz
f = 100Hz
f = 1kHz
f = 10kHz
f = 10kHz
14
22
AC SPECIFICATIONS
Gain Bandwidth Product
Noise Voltage
Noise Voltage Density
Noise Voltage Density
Noise Voltage Density
Noise Voltage Density
Noise Current Density
1.2
600
18
16
15.8
15.8
90
MHz
nV
P-P
nV/√Hz
nV/√Hz
nV/√Hz
nV/√Hz
fA/√Hz
5
FN6935.1
March 17, 2011
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