Precision Single and Dual Low Noise Operational
Amplifiers
ISL28127, ISL28227
The ISL28127 and ISL28227 are very high precision amplifiers
featuring very low noise, low offset voltage, low input bias
current and low temperature drift making them the ideal
choice for applications requiring both high DC accuracy and AC
performance. The combination of precision, low noise, and
small footprint provides the user with outstanding value and
flexibility relative to similar competitive parts.
Applications for these amplifiers include precision active
filters, medical and analytical instrumentation, precision
power supply controls, and industrial controls.
The ISL28127 single and ISL28227 dual are available in an 8
Ld SOIC, TDFN and MSOP packages. All devices are offered in
standard pin configurations and operate over the extended
temperature range to -40°C to +125°C.
Features
• Very Low Voltage Noise . . . . . . . . . . . . . . . . . . . . . . . .2.5nV/Hz
• Low Input Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70µV, Max.
• Superb Offset Drift. . . . . . . . . . . . . . . . . . . . . . 0.5µV/°C, Max.
• Input Bias Current . . . . . . . . . . . . . . . . . . . . . . . . . . 10nA, Max.
• Wide Supply Range . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 40V
• Gain-bandwidth Product . . . . . . . . . 10MHz Unity Gain Stable
• No Phase Reversal
Applications
• Precision Instruments
• Medical Instrumentation
• Industrial Controls
• Active Filter Blocks
• Data Acquisition
• Power Supply Control
Related Literature
•
AN1508:
ISL281x7SOICEVAL1Z Evaluation Board User’s
Guide
•
AN1509:
ISL282x7SOICEVAL1Z Evaluation Board User’s
Guide
INPUT NOISE VOLTAGE (nV/√Hz)
C
1
1.5nF
100
V
S
= ±19V
A
V
= 1
V
+
-
V
IN
R
1
95.3
R
2
OUTPUT
10
+
232
68.3nF
C
2
V
-
Sallen-Key Low Pass Filter (1MHz)
1
0.1
1
10
100
1k
10k
100k
FREQUENCY (Hz)
FIGURE 1. TYPICAL APPLICATION
FIGURE 2. INPUT NOISE VOLTAGE SPECTRAL DENSITY
December 16, 2010
FN6633.6
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. 2009, 2010. 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.
ISL28127, ISL28227
Ordering Information
.
PART NUMBER
(Notes 1, 2, 3)
ISL28127FBZ
ISL28127FRTBZ
ISL28127FRTZ
ISL28127FUBZ
ISL28127FUZ
ISL28227FBZ
ISL28227FRTBZ
ISL28227FRTZ
ISL28227FUBZ
ISL28227FUZ
ISL28127SOICEVAL1Z
ISL28127MSOPEVAL1Z
ISL28227SOICEVAL2Z
PART
MARKING
28127 FBZ
8127
-C 8127
8127Z
8127Z -C
28227 FBZ
8227
-C 8227
8227Z
8227Z -C
Evaluation Board
Evaluation Board
Evaluation Board
V
OS
(MAX)
(µV)
70
75 (B Grade)
150 (C Grade)
70 (B Grade)
150 (C Grade)
75
75 (B Grade)
150 (C Grade)
75 (B Grade)
150 (C Grade)
8 Ld SOIC
PACKAGE
(Pb-Free)
M8.15E
L8.3x3A
L8.3x3A
M8.118
M8.118
M8.15E
L8.3x3A
L8.3x3A
M8.118
M8.118
PKG.
DWG. #
8 Ld TDFN
8 Ld TDFN
8 Ld MSOP
8 Ld MSOP
8 Ld SOIC
8 Ld TDFN
8 Ld TDFN
8 Ld MSOP
8 Ld MSOP
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
ISL28127, ISL28227.
For more information on MSL please see techbrief
TB363.
2
FN6633.6
December 16, 2010
ISL28127, ISL28227
Pin Configurations
ISL28127
(8 LD SOIC, MSOP)
TOP VIEW
NC
-IN_A
+IN_A
V-
1
2
3
4
- +
8
7
6
5
NC
V+
V
OUT
A
NC
V
OUT
A
-IN_A
+IN_A
V-
ISL28227
(8 LD SOIC, MSOP)
TOP VIEW
1
2
3
4
- +
+ -
8
7
6
5
V+
V
OUT
B
-IN_B
+IN_B
ISL28127
(8 LD TDFN)
TOP VIEW
NC 1
-IN 2
+IN 3
V- 4
PD
- +
8 NC
7 V+
6 V
OUT
5 NC
V
OUT
A 1
-IN_A 2
+IN_A 3
V- 4
ISL28227
(8 LD TDFN)
TOP VIEW
8 V+
- +
PD
+ -
7 V
OUT
B
6 -IN_B
5 +IN_B
Pin Descriptions
ISL28127
(8 LD SOIC,
8 LD MSOP)
ISL28127
(8 LD TDFN)
3
3
4
4
3
4
5
2
6
6
7
7
6
2
1, 5, 8
1, 5, 8
PD
7
8
1
2
7
8
1
2
6
3
4
5
ISL28227
(8 LD SOIC,
8 LD MSOP)
ISL28227
(8 LD TDFN)
PIN
NAME
+IN
+IN_A
V-
+IN_B
-IN
-IN_B
V
OUT
V
OUT
B
V+
V
OUT
A
-IN_A
NC
PD
EQUIVALENT
CIRCUIT
Circuit 1
Circuit 1
Circuit 3
Circuit 1
Circuit 1
Circuit 1
Circuit 2
Circuit 2
Circuit 3
Circuit 2
Circuit 1
-
-
DESCRIPTION
Amplifier non-inverting input
Amplifier A non-inverting input
Negative power supply
Amplifier B non-inverting input
Amplifier inverting input
Amplifier B inverting input
Amplifier output
Amplifier B output
Positive power supply
Amplifier A output
Amplifier A inverting input
Not Connected – This pin is not
electrically connected internally.
Thermal Pad. Pad should be connected to
lowest potential source in the circuit.
V+
CAPACITIVELY TRI
GGERED ESD
CLAMP
V-
CIRCUIT 3
V+
IN-
IN+
V+
OUT
V-
V-
CIRCUIT 1
CIRCUIT 2
3
FN6633.6
December 16, 2010
ISL28127, ISL28227
Absolute Maximum Ratings
Maximum Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42V
Maximum Differential Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA
Maximum Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.5V
Min/Max Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . V- - 0.5V to V+ + 0.5V
Max/Min Input Current for
Input Voltage >V+ or <V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20mA
Output Short-Circuit Duration
(1 Output at a Time) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Indefinite
ESD Tolerance
Human Body Model (Tested per JESD22-A114F)
ISL28127. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.0kV
ISL28227. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6.0kV
Machine Model (Tested per EIA/JESD22-A115-A) . . . . . . . . . . . . . . 500V
Charged Device Model (Tested per JESD22-C101D) . . . . . . . . . . . .1.5kV
Di-electrically Isolated PR40 process . . . . . . . . . . . . . . . . . . . Latch-up free
Thermal Information
Thermal Resistance (Typical)
θ
JA
(°C/W)
θ
JC
(°C/W)
8 Ld SOIC (Note 5, 7)
ISL28127. . . . . . . . . . . . . . . . . . . . . . . . . .
120
60
ISL28227. . . . . . . . . . . . . . . . . . . . . . . . . .
110
55
8 Ld TDFN (Notes 4, 6)
ISL28127. . . . . . . . . . . . . . . . . . . . . . . . . .
48
7
ISL28227. . . . . . . . . . . . . . . . . . . . . . . . . .
47
6
8 Ld MSOP (Note 5, 7)
ISL28127. . . . . . . . . . . . . . . . . . . . . . . . . .
155
50
ISL28227. . . . . . . . . . . . . . . . . . . . . . . . . .
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
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 in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379.
5.
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.
6. For
θ
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
7. 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
PARAMETER
V
OS
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.
MIN
CONDITIONS
ISL28127
DESCRIPTION
Offset Voltage; SOIC Package
(Note
8)
-70
-120
TYP
10
-
10
-
-10
-
-10
-
-10
-
-10
-
MAX
(Note 8)
70
120
75
150
70
150
75
160
75
150
150
250
UNIT
µV
µV
µV
µV
µV
µV
µV
µV
µV
µV
µV
µV
ISL28227
-75
-150
Offset Voltage;
MSOP Grade B Package
Offset Voltage;
TDFN Grade B Package
Offset Voltage;
MSOP, TDFN Grade B Package
Offset Voltage;
MSOP, TDFN Grade C Package
ISL28127
-70
-150
ISL28127
-75
-160
ISL28227
-75
-150
ISL28127
ISL28227
-150
-250
4
FN6633.6
December 16, 2010
ISL28127, ISL28227
Electrical Specifications
PARAMETER
TCV
OS
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.
(Continued)
MIN
CONDITIONS
ISL28127
ISL28227
ISL28127
ISL28127
ISL28227
ISL28127
ISL28227
DESCRIPTION
Offset Voltage Drift;
SOIC Package
Offset Voltage Drift;
MSOP, Grade B
Offset Voltage Drift;
TDFN, Grade B
Offset Voltage Drift;
MSOP, TDFN, Grade B
Offset Voltage Drift;
MSOP, TDFN, Grade C
(Note
8)
-0.5
-0.75
-0.80
-0.90
-0.75
-1
-10
-12
TYP
0.1
0.1
0.1
0.1
0.1
0.1
1
-
1
-
-
-
120
-
125
-
117
-
1500
13.65
-
13.5
-
-13.65
-
-13.5
-
2.2
-
±45
-
MAX
(Note 8)
0.5
0.75
0.80
0.90
0.75
1
10
12
10
12
13
12
-
-
-
-
-
-
-
-
-
-
-
-13.5
-13.2
-13.4
-13.1
2.8
3.7
-
±20
UNIT
µV/
°C
µV/
°C
µV/
°C
µV/
°C
µV/
°C
µV/
°C
nA
nA
nA
nA
V
V
dB
dB
dB
dB
dB
dB
V/mV
V
V
V
V
V
V
V
V
mA
mA
mA
V
I
OS
Input Offset Current
I
B
Input Bias Current
-10
-12
V
CM
Input Voltage Range
Guaranteed by CMRR
-13
-12
CMRR
Common-Mode Rejection Ratio
V
CM
= -13V to +13V
V
CM
= -12V to +12V
115
115
115
115
110
110
1000
13.5
13.2
PSRR
Power Supply Rejection Ratio
ISL28127
Power Supply Rejection Ratio
ISL28227
V
S
= ±2.25V to ±20V
V
S
= ±3V to ± 20V
V
S
= ±2.25V to ±20V
V
S
= ±3V to ± 20V
V
O
= -13V to +13V
R
L
= 10kΩ to ground
R
L
= 10kΩ to ground
A
VOL
V
OH
Open-Loop Gain
Output Voltage High
R
L
= 2kΩ to ground
13.4
13.1
V
OL
Output Voltage Low
R
L
= 10kΩ to ground
-
-
R
L
= 2kΩ to ground
-
-
I
S
Supply Current/Amplifier
-
-
I
SC
V
SUPPLY
GBW
e
np-p
e
n
e
n
Short-Circuit
Supply Voltage Range
R
L
= 0Ω to ground
Guaranteed by PSRR
-
±2.25
AC SPECIFICATIONS
Gain Bandwidth Product
Voltage Noise
Voltage Noise Density
Voltage Noise Density
0.1Hz to 10Hz
f = 10Hz
f = 100Hz
-
-
-
-
10
85
3
2.8
-
-
-
-
MHz
nV
P-P
nV/√Hz
nV/√Hz
5
FN6633.6
December 16, 2010
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