DATASHEET
ISL28127, ISL28227, ISL28227SEH
Precision Single and Dual Low Noise Operational Amplifiers
The
ISL28127, ISL28227
and
ISL28227SEH
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 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.
The ISL28227SEH is available in a 10 Ld hermetic ceramic
Flatpack package. The device is offered in an industry
standard pin configuration and operates over the extended
temperature range from -55°C to +125°C.
FN6633
Rev 8.00
April 1, 2016
Features
• Low input offset voltage . . . . . . . . . . . . . . . . . . . . ±70µV, max
ISL28227SEH ±75µV, max
• Superb offset voltage TC . . . . . . . . . . . . . . . . . .0.5µV/°C, max
ISL28227SEH 1µV/°C, max
• Wide supply range . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 40V
ISL28227SEH 4.5V to 36V
• Very low voltage noise . . . . . . . . . . . . . . . . . . . . . . . . .2.5nV/Hz
• Input bias current. . . . . . . . . . . . . . . . . . . . . . . . . . ±10nA, max
• Gain-bandwidth product . . . . . . . . . .10MHz Unity gain stable
• No phase reversal
• Operating temperature range. . . . . . . . . . . .-40°C to +125°C
ISL28227SEH -55°C to +125°C
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
•
AN1556,
Building an Accurate SPICE Model for Low Noise,
Low Power Precision Amplifiers
•
AN1690,
Electronics Meets the Challenges of Patient
Monitors
C
1
1.5nF
100
INPUT NOISE VOLTAGE (nV√Hz)
V
S
= ±19V
A
V
= 1
V
+
-
V
IN
R
1
95.3
R
2
+
232
68.3nF
OUTPUT
10
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
FN6633 Rev 8.00
April 1, 2016
Page 1 of 33
ISL28127, ISL28227, ISL28227SEH
Table of Contents
Related Literature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Thermal Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical Specifications ISL28127, ISL28227 (V
S
±15V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical Specifications ISL28127, ISL28227 (V
S
±5V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical Specifications ISL28227SEH (V
S
±15V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Electrical Specifications ISL28227SEH (V
S
±5V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Typical Performance Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Applications Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input ESD Diode Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Current Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Phase Reversal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unused Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ISL28127, ISL28227 SPICE Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19
19
19
19
19
19
19
19
20
Characterization vs Simulation Results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
About Intersil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Package Outline Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
M8.15E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
L8.3x3K. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
M8.118B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
K10.A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
30
31
32
33
FN6633 Rev 8.00
April 1, 2016
Page 2 of 33
ISL28127, ISL28227, ISL28227SEH
Ordering Information
PART NUMBER
ISL28127FBZ (No longer available,
recommended replacement:
ISL28127FRTZ-T13) (Notes
1, 4, 6)
ISL28127FRTBZ (No longer available,
recommended replacement:
ISL28127FRTZ-T13) (Notes
1, 4, 6)
ISL28127FRTZ (Notes
1, 4, 6)
ISL28127FUBZ (No longer available,
recommended replacement:
ISL28127FRTZ-T13) (Notes
1, 4, 6)
ISL28127FUZ (No longer available,
recommended replacement:
ISL28127FRTZ-T13) (Notes
1, 4, 6)
ISL28227FBZ (Notes
2, 4, 6)
ISL28227FRTBZ (Notes
2, 4, 6)
ISL28227FRTZ (Notes
1, 4, 6)
ISL28227FUBZ (Notes
3, 4, 6)
ISL28227FUZ (Notes
3, 4, 6)
ISL28227SEHMF (Note
5)
ISL28227SEHF/PROTO (Note
5)
ISL28227SEHMX (Note
5)
ISL28227SEHX/SAMPLE (Note
5)
ISL28127SOICEVAL1Z
ISL28127MSOPEVAL1Z
ISL28227SOICEVAL2Z
ISL70227MHEVAL1Z
Evaluation Board
Evaluation Board
Evaluation Board
Evaluation Board
PART
MARKING
28127 FBZ
V
OS
(MAX)
(µV)
70
PACKAGE
(RoHS Compliant)
8 Ld SOIC
M8.15E
PKG.
DWG. #
8127
75 (B Grade)
8 Ld TDFN
L8.3x3K
-C 8127
8127Z
150 (C Grade)
70 (B Grade)
8 Ld TDFN
8 Ld MSOP
L8.3x3K
M8.118B
8127Z -C
150 (C Grade)
8 Ld MSOP
M8.118B
28227 FBZ
8227
-C 8227
8227Z
8227Z -C
ISL28227SEHMF
ISL28227 SEHF/PROTO
75
75 (B Grade)
150 (C Grade)
75 (B Grade)
150 (C Grade)
75 (B Grade)
75 (B Grade)
75 (B Grade)
75 (B Grade)
8 Ld SOIC
8 Ld TDFN
8 Ld TDFN
8 Ld MSOP
8 Ld MSOP
10 Ld FLATPACK
10 Ld FLATPACK
DIE
DIE
M8.15E
L8.3x3K
L8.3x3K
M8.118B
M8.118B
K10.A
K10.A
1. Add “-T13” suffix for 6k unit, -T7” suffix for 1k,“-T7A” suffix for 250 unit Tape and Reel options. Please refer to
TB347
for details on reel specifications.
2. Add “-T13” suffix for 2.5k unit, -T7” suffix for 1k,“-T7A” suffix for 250 unit Tape and Reel options. Please refer to
TB347
for details on reel specifications.
3. Add “-T13” suffix for 2.5k unit, -T7” suffix for 1.5k,“-T7A” suffix for 250 unit Tape and Reel options. Please refer to
TB347
for details on reel specifications.
4. 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.
5. These Intersil Pb-free Hermetic packaged products employ 100% Au plate - e4 termination finish, which is RoHS compliant and compatible with both SnPb
and Pb-free soldering operations.
6. For Moisture Sensitivity Level (MSL), please see device information page for
ISL28127, ISL28227.
For more information on MSL please see techbrief
TB363.
TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS
PART NUMBER
ISL28127
ISL28227
ISL28227SEH
NUMBER OF DEVICES
1
2
2
OPERATING TEMPERATURE RANGE
-40°C to +125°C
-40°C to +125°C
-55°C to +125°C
FN6633 Rev 8.00
April 1, 2016
Page 3 of 33
ISL28127, ISL28227, ISL28227SEH
Pin Configurations
ISL28127
(8 LD SOIC, MSOP)
TOP VIEW
NC
-IN_A
+IN_A
1
2
3
- +
R
O
LE
B
LA
P
SU
ED
RT
NC
8
PO
ISL28227
(8 LD SOIC, MSOP)
TOP VIEW
V
OUT
A
-IN_A
+IN_A
V-
1
2
3
4
- +
+ -
8
7
6
5
V+
V
OUT
B
-IN_B
+IN_B
7
6
5
V+
V
OUT
A
NC
NO
AI
V - 4
AV
ER
NG
LO
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
ISL28227SEH
(10 LD FLATPACK)
TOP VIEW
V
OUT
A
-IN A
+IN A
NC
V-
1
2
3
4
5
10
9
V+
V
OUT
B
-IN B
+IN B
NC
-
+
+
-
8
7
6
Pin Descriptions
ISL28127
(8 Ld SOIC,
8 Ld MSOP)
(NO LONGER
AVAILABLE)
ISL28127
(8 Ld TDFN)
3
3
4
4
3
4
5
2
6
6
8
3
4
5
3
5
7
ISL28227
(8 Ld SOIC,
8 Ld MSOP)
ISL28227
(8 Ld TDFN)
ISL28227SEH
(10 Ld Flatpack)
PIN
NAME
+IN
+IN_A
V-
+IN_B
-IN
-IN_B
EQUIVALENT
CIRCUIT
Circuit 1
Circuit 1
Circuit 3
Circuit 1
Circuit 1
Circuit 1
DESCRIPTION
Amplifier noninverting input
Amplifier A noninverting input
Negative power supply
Amplifier B noninverting input
Amplifier inverting input
Amplifier B inverting input
FN6633 Rev 8.00
April 1, 2016
Page 4 of 33
ISL28127, ISL28227, ISL28227SEH
Pin Descriptions
(Continued)
ISL28127
(8 Ld SOIC,
8 Ld MSOP)
(NO LONGER
AVAILABLE)
ISL28127
(8 Ld TDFN)
6
7
7
6
2
1, 5, 8
1, 5, 8
PD
7
8
1
2
7
8
1
2
9
10
1
2
4, 6
ISL28227
(8 Ld SOIC,
8 Ld MSOP)
ISL28227
(8 Ld TDFN)
ISL28227SEH
(10 Ld Flatpack)
PIN
NAME
V
OUT
V
OUT
B
V+
V
OUT
A
-IN_A
NC
PD
EQUIVALENT
CIRCUIT
Circuit 2
Circuit 2
Circuit 3
Circuit 2
Circuit 1
-
-
DESCRIPTION
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+
IN-
IN+
V+
OUT
V-
V+
CAPACITIVELY T
RIGGERED ESD
CLAMP
V-
CIRCUIT 3
V-
CIRCUIT 1
CIRCUIT 2
FN6633 Rev 8.00
April 1, 2016
Page 5 of 33
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