FN6377 Rev 5.00 Page 1 of 19
October 12, 2015
FN6377
Rev 5.00
October 12, 2015
ISL28158, ISL28258
Micro-power Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input
Bias Current Op Amps
DATASHEET
The ISL28158 and ISL28258 are micro-power precision
operational amplifiers optimized for single supply operation
at 5.5V and can operate down to 2.4V.
These devices feature an Input Range Enhancement Circuit
(IREC), which enables them to maintain CMRR performance
for input voltages greater than the positive supply. The input
signal is capable of swinging 0.25V above the positive
supply and to 100mV below the negative supply with only a
slight degradation of the CMRR performance. The output
operation is rail-to-rail.
The ISL28158 and ISL28258 draw minimal supply current
while meeting excellent DC-accuracy noise and output drive
specifications. Competing devices seriously degrade these
parameters to achieve micro-power supply current. Offset
current, voltage and current noise, slew rate, and gain
bandwidth product are all two to ten times better than on
previous micro-power op amps.
The 1/f corner of the voltage noise spectrum is at 100Hz.
This results in low frequency noise performance, which can
only be found on devices with an order of magnitude higher
supply current.
ISL28158 and ISL28258 can be operated from one lithium
cell or two Ni-Cd batteries. The input range includes both
positive and negative rail. The output swings to both rails.
Features
• 34µA typical supply current (ISL28158)
• 68µA typical supply current (ISL28258)
• 300µV maximum offset voltage (8 Ld SOIC)
• 1pA typical input bias current
• 200kHz gain bandwidth product
• 2.4V to 5.5V single supply voltage range
• Rail-to-rail input and output
• Enable pin (ISL28158 only)
• Pb-free (RoHS compliant)
Applications
• Battery- or solar-powered systems
• 4mA to 20mA current loops
• Handheld consumer products
• Medical devices
• Sensor amplifiers
• ADC buffers
• DAC output amplifiers
Pinouts
ISL28158
(6 LD SOT-23)
TOP VIEW
ISL28158
(8 LD SOIC)
TOP VIEW
ISL28258
(8 LD SOIC)
TOP VIEW
ISL28258
(8 LD MSOP)
TOP VIEW
1
2
3
6
4
5
+-
OUT
V-
IN+
V+
EN
IN-
1
2
3
4
8
7
6
5
-
+
NC
IN-
IN+
EN
V+
OUT
V- NC
1
2
3
4
8
7
6
5
OUT_A
IN-_A
IN+_A
V+
OUT_B
IN-_B
V- IN+_B
+-
+-
1
2
3
4
8
7
6
5
OUT_A
IN-_A
IN+_A
V+
OUT_B
IN-_B
V- IN+_B
+-
+-
NO LONGER AVAILABLE
OR SUPPORTED
ISL28158, ISL28258
FN6377 Rev 5.00 Page 2 of 19
October 12, 2015
Ordering Information
PART NUMBER
(Note 2)
PART
MARKING
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL28158FHZ-T7 (Note 1) GABW (Note 3) 6 Ld SOT-23 P6.064A
ISL28158FHZ-T7A (Note 1) GABW (Note 3) 6 Ld SOT-23 P6.064A
ISL28158FBZ 28158 FBZ 8 Ld SOIC M8.15E
ISL28158FBZ-T7 (Note 1) 28158 FBZ 8 Ld SOIC M8.15E
ISL28258FBZ (No longer available,
recommended replacement: ISL28158FBZ-T7)
28258 FBZ 8 Ld SOIC M8.15E
ISL28258FBZ-T7 (Note 1)
(No longer available, recommended
replacement: ISL28158FBZ-T7
28258 FBZ 8 Ld SOIC M8.15E
ISL28258FUZ (No longer available,
recommended replacement: ISL28158FBZ-T7
8258Z 8 Ld MSOP M8.118A
ISL28258FUZ-T7 (Note 1)
(No longer available, recommended
replacement: ISL28158FBZ-T7
8258Z 8 Ld MSOP M8.118A
ISL28158EVAL1Z Evaluation Board
NOTES:
1. 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. The part marking is located on the bottom of the part.
ISL28158, ISL28258
FN6377 Rev 5.00 Page 3 of 19
October 12, 2015
Absolute Maximum Ratings (TA = +25°C) Thermal Information
Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.75V
Supply Turn On Voltage Slew Rate . . . . . . . . . . . . . . . . . . . . . 1V/µs
Differential Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . V- -0.5V to V+ +0.5V
ESD Rating
Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3kV
Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300V
Charge Device Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1500V
Thermal Resistance (Typical, Note 4) JA (°C/W)
6 Ld SOT-23 Package . . . . . . . . . . . . . . . . . . . . . . . 230
8 Ld SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . 120
8 Ld MSOP Package . . . . . . . . . . . . . . . . . . . . . . . . 160
Output Short-Circuit Duration . . . . . . . . . . . . . . . . . . . . . . .Indefinite
Ambient Operating Temperature Range . . . . . . . . . -40°C to +125°C
Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . +125°C
Pb-Free Reflow Profilesee link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
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.
NOTE:
4. qJA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
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 pulse d tests, therefore: TJ = TC = TA
Electrical Specifications V+ = 5V, V- = 0V, VCM = 2.5V, RL = OpenTA = +25°C unless otherwise specified.
Boldface limits apply over the operating temperature range, -40°C to +125°C. Temperature data established by characterization.
PARAMETER DESCRIPTION CONDITIONS
MIN
(Note 5) TYP
MAX
(Note 5) UNIT
DC SPECIFICATIONS
VOS Input Offset Voltage 8 Ld SOIC -300 3.1 300 µV
-650 650
6 Ld SOT-23 -550 5 550 µV
-750 750
8 Ld MSOP -350 3 350 µV
-700 700
Input Offset Voltage vs Temperature 0.3 µV/°C
IOS Input Offset Current TA = -40°C to +85°C -35 ±5 35 pA
-80 80
IBInput Bias Current TA = -40°C to +85°C -30 ±1 30 pA
-80 80
VCM Common-Mode Voltage Range Guaranteed by CMRR 0 5 V
CMRR Common-Mode Rejection Ratio VCM = 0V to 5V 75 98 dB
70
PSRR Power Supply Rejection Ratio V+ = 2.4V to 5.5V 80 98 dB
75
AVOL Large Signal Voltage Gain VO = 0.5V to 4.5V, RL = 100kto VCM 100 220 V/mV
75
VO = 0.5V to 4.5V, RL = 1kto VCM 45 V/mV
VOS
T
----------------
ISL28158, ISL28258
FN6377 Rev 5.00 Page 4 of 19
October 12, 2015
VOUT Maximum Output Voltage Swing Output low, RL = 100kto VCM 5.3 6 mV
20
Output low, RL = 1kto VCM 135 150 mV
250
Output high, RL = 100kto VCM 4.992 4.996 V
4.990
Output high, RL = 1kto VCM 4.84 4.874 V
4.77
IS,ON Quiescent Supply Current V+ = 5V, Enable
(ISL28158)
34 43 µA
55
V+ = 5V
(ISL28258)
68 86 µA
110
IS,OFF Quiescent Supply Current, Disabled
(ISL28158)
10 14 µA
19
IO+ Short-Circuit Output Source Current RL = 10to VCM 27 30 mA
20
IO- Short-Circuit Output Sink Current RL = 10to VCM -25 -22 mA
-15
VSUPPLY Supply Operating Range V+ to V-2.4 5.5 V
VENH EN Pin High Level (ISL28158) 2V
VENL EN Pin Low Level (ISL28158) 0.8 V
IENH EN Pin Input High Current
(ISL28158)
VEN = V+11.5µA
1.6
IENL EN Pin Input Low Current
(ISL28158)
VEN = V-12 25 nA
30
AC SPECIFICATONS
GBW Gain Bandwidth Product AV = 100, RF = 100kRG = 1k
RL = 10kto VCM
200 kHz
Unity Gain
Bandwidth
-3dB Bandwidth AV =1, RF = 0VOUT = 10mVP-P 420 kHz
eNInput Noise Voltage Peak-to-Peak f = 0.1Hz to 10Hz 1.4 µVP-P
Input Noise Voltage Density fO = 1kHz 64 nV/Hz
iNInput Noise Current Density fO = 10kHz 0.19 pA/Hz
CMRR @ 60Hz Input Common Mode Rejection Ratio VCM = 1VP-P
, RL = 10kto VCM -70 dB
PSRR+ @
120Hz
Power Supply Rejection Ratio (V+)V
+, V- = ±1.2V and ±2.5V,
VSOURCE = 1VP-P
, RL = 10kto VCM
-64 dB
PSRR- @
120Hz
Power Supply Rejection Ratio (V-)V
+, V- = ±1.2V and ±2.5V
VSOURCE = 1VP-P
, RL = 10kto VCM
-85 dB
TRANSIENT RESPONSE
SR Slew Rate 0.1 V/µs
Electrical Specifications V+ = 5V, V- = 0V, VCM = 2.5V, RL = OpenTA = +25°C unless otherwise specified.
Boldface limits apply over the operating temperature range, -40°C to +125°C. Temperature data established by characterization. (Continued)
PARAMETER DESCRIPTION CONDITIONS
MIN
(Note 5) TYP
MAX
(Note 5) UNIT
ISL28158, ISL28258
FN6377 Rev 5.00 Page 5 of 19
October 12, 2015
tr, tf, Large
Signal
Rise Time, 10% to 90% VOUT AV
= +2,
VOUT = 1VP-P
, Rg = Rf = 10k
R
L
= 10kto VCM
10 µs
Fall Time, 90% to 10% VOUT AV
= +2,
VOUT = 1VP-P
, Rg = Rf = 10k
R
L
=
10kto VCM
9µs
tr, tf, Small
Signal
Rise Time, 10% to 90% VOUT AV
= +2,
VOUT = 10mVP-P
,
Rg = Rf = RL = 10kto VCM
650 ns
Fall Time, 90% to 10% VOUT AV
= +2
,
VOUT = 10mVP-P
,
Rg = Rf = R
L
=
10kto VCM
640 ns
tEN Enable to Output Turn-on Delay Time, 10%
EN to 10% VOUT
VEN = 5V to 0V, AV
= +2,
Rg = Rf = RL = 1k to VCM
15 µs
Enable to Output Turn-off Delay Time, 10%
EN to 10% VOUT
VEN = 0V to 5V, AV
= +2,
Rg = Rf = R
L
= 1k
to VCM
0.5 µs
NOTE:
5. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
Electrical Specifications V+ = 5V, V- = 0V, VCM = 2.5V, RL = OpenTA = +25°C unless otherwise specified.
Boldface limits apply over the operating temperature range, -40°C to +125°C. Temperature data established by characterization. (Continued)
PARAMETER DESCRIPTION CONDITIONS
MIN
(Note 5) TYP
MAX
(Note 5) UNIT
ISL28158, ISL28258
FN6377 Rev 5.00 Page 6 of 19
October 12, 2015
Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open.
FIGURE 1. GAIN vs FREQUENCY vs FEEDBACK RESISTOR
VALUES Rf/Rg
FIGURE 2. GAIN vs FREQUENCY vs VOUT, RL = 1k
FIGURE 3. GAIN vs FREQUENCY vs VOUT, RL = 10k FIGURE 4. GAIN vs FREQUENCY vs VOUT
, RL = 100k
FIGURE 5. GAIN vs FREQUENCY vs RLFIGURE 6. FREQUENCY RESPONSE vs CLOSED LOOP GAIN
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
1
100 1k 10k 100k 1M
FREQUENCY (Hz)
10
NORMALIZED GAIN (dB)
V+ = 5V
RL = 1k
AV = +2
VOUT = 10mVP-P
CL = 16.3pF
Rf = Rg = 10k
Rf = Rg = 4.99k
Rf = Rg = 1k
Rf = Rg = 499
-8
-7
-6
-5
-4
-3
-2
-1
0
1
2
3
4
1k 10k 100k 1M
FREQUENCY (Hz)
VOUT = 100mV
VOUT = 1V
NORMALIZED GAIN (dB)
VOUT = 50mV
VOUT = 10mV
V+ = 5V
RL = 1k
AV = +1
VOUT = 10mVP-P
CL = 16.3pF
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
1
1k 10k 100k 1M
FREQUENCY (Hz)
VOUT = 100mV
VOUT = 50mV
VOUT = 10mV
V+ = 5V
RL = 10k
AV = +1
VOUT = 10mVP-P
CL = 16.3pF
VOUT = 1V
NORMALIZED GAIN (dB)
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
1
1k 10k 100k 1M
FREQUENCY (Hz)
NORMALIZED GAIN (dB)
V+ = 5V
RL = 100k
AV = +1
VOUT = 10mVP-P
CL = 16.3pF
VOUT = 100mV
VOUT = 50mV
VOUT = 10mV
VOUT = 1V
-6
-5
-4
-3
-2
-1
0
1
2
3
4
1k 10k 100k 1M
FREQUENCY (Hz)
RL = 10k
RL = 1k
RL = 100k
NORMALIZED GAIN (dB)
V+ = 5V
AV = +1
VOUT = 10mVP-P
CL = 16.3pF
10 100 1k 10k 100k 1M
FREQUENCY (Hz)
-10
0
10
20
30
40
50
60
70 AV = 1, Rg = INF, Rf = 0
AV = 10, Rg = 1k, Rf = 9.09k
AV = 101, Rg = 1k, Rf = 100k
AV = 1001, Rg = 1k, Rf = 1M
AV = 1001
AV = 101
AV = 10
AV = 1
V+ = 5V
VOUT = 10mVP-P
CL = 16.3pF
RL = 10k
GAIN (dB)
ISL28158, ISL28258
FN6377 Rev 5.00 Page 7 of 19
October 12, 2015
FIGURE 7. GAIN vs FREQUENCY vs SUPPLY VOLTAGE FIGURE 8. GAIN vs FREQUENCY vs CL
FIGURE 9. CMRR vs FREQUENCY, V+ = 2.4V AND 5V FIGURE 10. PSRR vs FREQUENCY, V+, V- = ±1.2V
FIGURE 11. PSRR vs FREQUENCY, V+, V- = ±2.5V FIGURE 12. INPUT VOLTAGE NOISE DENSITY vs FREQUENCY
Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. (Continued)
-8
-7
-6
-5
-4
-3
-2
-1
0
1
V+ = 5V
1k 10k 100k 1M
FREQUENCY (Hz)
NORMALIZED GAIN (dB)
RL = 10k
AV = +1
VOUT = 10mVP-P
CL = 16.3pF
V+ = 2.4V
-10
-8
-6
-4
-2
0
2
4
6
8
1k 10k 100k 1M
FREQUENCY (Hz)
NORMALIZED GAIN (dB)
CL = 43.3pF
CL = 34.3pF
CL = 16.3pF
CL = 98.3pF
CL = 72.3pF
CL = 55.3pF
V+ = 5V
RL = 10k
AV = +1
VOUT = 10mVP-P
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
10 100 1k 10k 100k 1M
FREQUENCY (Hz)
V+ = 2.4V, 5V
RL = 10k
AV = +1
VCM = 1VP-P
CL = 16.3pF
CMRR (dB)
-100
-80
-60
-40
-20
0
-90
-70
-50
-30
-10
10
10 100 1k 10k 100k 1M
FREQUENCY (Hz)
V+ = 2.4V
RL = 10k
AV = +1
VCM = 1VP-P
CL = 16.3pF
PSRR-
PSRR+
PSRR (dB)
-100
-80
-60
-40
-20
0
-90
-70
-50
-30
-10
10
PSRR (dB)
10 100 1k 10k 100k 1M
FREQUENCY (Hz)
V+ = 5V
RL = 10k
AV = +1
VCM = 1VP-P
CL = 16.3pF
PSRR-
PSRR+
10
100
1000
1 10 100 1k 10k 100k
FREQUENCY (Hz)
V+ = 5V
RL = 10k
AV = +1
CL = 16.3pF
INPUT VOLTAGE NOISE (nV/Hz)
ISL28158, ISL28258
FN6377 Rev 5.00 Page 8 of 19
October 12, 2015
FIGURE 13. INPUT CURRENT NOISE DENSITY vs FREQUENCY FIGURE 14. INPUT VOLTAGE NOISE 0.1Hz TO 10Hz
FIGURE 15. LARGE SIGNAL STEP RESPONSE FIGURE 16. SMALL SIGNAL STEP RESPONSE
FIGURE 17. ENABLE TO OUTPUT RESPONSE
Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. (Continued)
0.1
1
10
1 10 100 1k 10k 100k
FREQUENCY (Hz)
V+ = 5V
RL = 10k
AV = +1
CL = 16.3pF
INPUT CURRENT NOISE (pA/Hz)
-1.6
-1.4
-1.2
-1.0
-0.8
-0.6
-0.4
-0.2
0
012345678910
TIME (s)
V+ = 5V RL = 10k
Rg = 100, Rf = 100k
AV = 1000
CL = 16.3pF
INPUT NOISE (µV)
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0 50 100 150 200 250 300 350 400
TIME (µs)
V+, V- = ±2.5V
RL = 10k
Rg = Rf = 10k
AV = 2
CL = 16.3pF
VOUT = 1VP-P
LARGE SIGNAL (V)
0.006
0.008
0.010
0.012
0.014
0.016
0.018
0.020
0 50 100 150 200 250 300 350 400
TIME (µs)
V+, V- = ±2.5V
RL = 10k
Rg = Rf = 10k
AV = 2
CL = 16.3pF
VOUT = 10mVP-P
SMALL SIGNAL (V)
-1
0
1
2
3
4
5
6
0 50 100 150 200 250 300 350 400
TIME (µs)
-0.2
0
0.2
0.4
0.6
0.8
1.0
1.2
V-ENABLE (V)
OUTPUT (V)
V+ = 5V
Rg = Rf = 10k
AV = +2
VOUT = 1VP-P
CL = 16.3pF
V-ENABLE V-OUT
RL = 10k
ISL28158, ISL28258
FN6377 Rev 5.00 Page 9 of 19
October 12, 2015
FIGURE 18. INPUT OFFSET VOLTAGE vs COMMON MODE
INPUT VOLTAGE
FIGURE 19. INPUT BIAS CURRENT vs COMMON MODE
INPUT VOLTAGE
FIGURE 20. SUPPLY CURRENT ENABLED (SINGLE) vs
TEMPERATURE, V+, V- = ±2.5V
FIGURE 21. SUPPLY CURRENT (DUAL) vs TEMPERATURE,
V+, V- = ±2.5V
FIGURE 22. SUPPLY CURRENT DISABLED (SINGLE) vs
TEMPERATURE, V+, V- = ±2.5V
FIGURE 23. VOS (SOIC PKG) vs TEMPERATURE, VIN = 0V,
V+, V- = ±2.75V
Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. (Continued)
-500
-400
-300
-200
-100
0
100
200
300
400
500
0123456
VCM (V)
100
-1
V+ = 5V
RL = OPEN
AV = +1000
Rf = 100k, Rg = 100
VOS (µV)
-100
-80
-60
-40
-20
0
20
40
60
80
100
-10123456
VCM (V)
V+ = 5V
RL = OPEN
AV = +1000
Rf = 100k, Rg = 100
I-BIAS (pA)
20
25
30
35
40
45
50
-40-200 20406080100120
TEMPERATURE (°C)
MAX
MEDIAN
MIN
N = 1000
CURRENT (µA)
-40-200 20406080100120
TEMPERATURE (°C)
CURRENT (µA)
50
55
60
65
70
75
80
MAX
MEDIAN
MIN
N = 12
5
6
7
8
9
10
11
12
13
14
-40-200 20406080100120
TEMPERATURE (°C)
MAX
MEDIAN
MIN
N = 1000
CURRENT (µA)
-700
-500
-300
-100
100
300
500
-40-200 20406080100120
TEMPERATURE (°C)
MAX
MEDIAN
MIN
N = 1000
VOS (µV)
ISL28158, ISL28258
FN6377 Rev 5.00 Page 10 of 19
October 12, 2015
FIGURE 24. VOS (SOIC PKG) vs TEMPERATURE, VIN = 0V,
V+, V- = ±2.5V
FIGURE 25. VOS (SOIC PKG) vs TEMPERATURE, VIN = 0V,
V+, V- = ±1.2V
FIGURE 26. VOS (SOT PKG) vs TEMPERATURE, VIN = 0V,
V+, V- = ±2.75V
FIGURE 27. VOS (SOT PKG) vs TEMPERATURE, VIN = 0V,
V+, V- = ±2.5V
FIGURE 28. VOS (SOT PKG) vs TEMPERATURE, VIN = 0V,
V+, V- = ±1.2V
FIGURE 29. VOS (MSOP PKG) vs TEMPERATURE, VIN = 0V,
V+, V- = ±2.5V
Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. (Continued)
-700
-500
-300
-100
100
300
500
-40-200 20406080100120
TEMPERATURE (°C)
MAX
MEDIAN
MIN
N = 1000
VOS (µV)
-700
-500
-300
-100
100
300
500
700
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
MEDIAN
MIN
N = 1000
VOS (µV)
MAX
-1000
-800
-600
-400
-200
0
200
400
600
800
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
MAX
MEDIAN
MIN
N = 1000
VOS (µV)
-1000
-800
-600
-400
-200
0
200
400
600
800
1000
-40 -20 0 20 40 60 80 100 120
MAX
MEDIAN
MIN
N = 1000
TEMPERATURE (°C)
VOS (µV)
-1000
-800
-600
-400
-200
0
200
400
600
800
1000
-40 -20 0 20 40 60 80 100 120
MAX
MEDIAN
MIN
N = 1000
VOS (µV)
TEMPERATURE (°C)
-600
-400
-200
0
200
400
600
-40 -20 0 20 40 60 80 100 120
VOS (µV)
TEMPERATURE (°C)
MEDIAN
N = 12
MIN
MAX
ISL28158, ISL28258
FN6377 Rev 5.00 Page 11 of 19
October 12, 2015
FIGURE 30. VOS (MSOP PKG) vs TEMPERATURE, VIN = 0V,
V+, V- = ±1.2V
FIGURE 31. IBIAS+ vs TEMPERATURE, V+, V- = ±2.5V
FIGURE 32. IBIAS- vs TEMPERATURE, V+, V- = ±2.5V FIGURE 33. IBIAS+ vs TEMPERATURE, V+, V- = ±1.2V
FIGURE 34. IBIAS- vs TEMPERATURE, V+, V- = ±1.2V FIGURE 35. IOS vs TEMPERATURE, V+, V- = ±2.5
Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. (Continued)
-600
-400
-200
0
200
400
600
-40 -20 0 20 40 60 80 100 120
VOS (µV)
TEMPERATURE (°C)
MEDIAN
N = 12
MIN
MAX
-50
0
50
100
150
200
250
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
MAX
MEDIAN
MIN
N = 1000
IBIAS+ (pA)
-50
0
50
100
150
200
250
300
350
400
450
500
-40-200 20406080100120
TEMPERATURE (°C)
MAX
N = 1000
MEDIAN
IBIAS- (pA)
MIN
-50
0
50
100
150
200
250
300
350
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
MAX
MEDIAN
MIN
N = 1000
IBIAS+ (pA)
-50
0
50
100
150
200
250
300
350
400
450
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
MAX
MEDIAN
MIN
N = 1000
IBIAS- (pA)
-160
-140
-120
-100
-80
-60
-40
-20
0
20
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
MAX
MEDIAN
MIN
N = 1000
IOS (pA)
ISL28158, ISL28258
FN6377 Rev 5.00 Page 12 of 19
October 12, 2015
FIGURE 36. IOS vs TEMPERATURE, V+, V- = ±1.2V FIGURE 37. CMRR vs TEMPERATURE, VCM = -2.5V TO +2.5V,
V+, V- = ±2.5V
FIGURE 38. PSRR vs TEMPERATURE, V+, V- = ±1.2V TO
±2.75V
FIGURE 39. AVOL vs TEMPERATURE, V+, V- = ±2.5V,
VO = -2V TO +2V, RL = 100k
FIGURE 40. AVOL vs TEMPERATURE, V+, V- = ±2.5V,
VO = -2V TO +2V, RL = 1k
FIGURE 41. VOUT HIGH vs TEMPERATURE, V+, V- =±2.5V,
RL = 1k
Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. (Continued)
-150
-130
-110
-90
-70
-50
-30
-10
10
30
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
MAX
MIN
N = 1000
IOS (pA)
MEDIAN
70
80
90
100
110
120
130
140
-40-200 20406080100120
TEMPERATURE (°C)
CMRR (dB)
MAX
MEDIAN
MIN
N = 1000
80
90
100
110
120
130
140
TEMPERATURE (°C)
PSRR (dB)
MAX
MIN
-40-20 0 20406080100120
N = 1000
MEDIAN
100
150
200
250
300
350
400
450
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
MAX
MEDIAN
MIN
N = 1000
AVOL (V/mV)
20
25
30
35
40
45
50
55
60
65
70
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
MAX
MEDIAN
MIN
N = 1000
AVOL (V/mV)
4.84
4.85
4.86
4.87
4.88
4.89
4.90
4.91
4.92
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
MAX
MIN
MEDIAN
N = 1000
VOUT (V)
ISL28158, ISL28258
FN6377 Rev 5.00 Page 13 of 19
October 12, 2015
FIGURE 42. VOUT HIGH vs TEMPERATURE, V+, V- = ±2.5V,
RL = 100k
FIGURE 43. VOUT LOW vs TEMPERATURE, V+, V- = ±2.5V,
RL = 1k
FIGURE 44. VOUT LOW vs TEMPERATURE, V+, V- = ±2.5V,
RL = 100k
FIGURE 45. IO+ SHORT CIRCUIT OUTPUT CURRENT vs
TEMPERATURE VIN = -2.55V, RL = 10k,
V+, V- = ±2.5V
FIGURE 46. IO- SHORT CIRCUIT OUTPUT CURRENT vs TEMPERATURE VIN = +2.55V, RL = 10k, V+, V- = ±2.5V
Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. (Continued)
4.9955
4.9960
4.9965
4.9970
4.9975
4.9980
-40-20 0 20406080100120
TEMPERATURE (°C)
MAX
MIN
MEDIAN
N = 1000
VOUT (V)
100
110
120
130
140
150
160
170
180
190
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
MEDIAN
MIN
MAX
N = 1000
VOUT (mV)
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
-40-200 20406080100120
TEMPERATURE (°C)
MEDIAN
MIN
MAX
N = 1000
VOUT (mV)
20
25
30
35
40
45
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
IO+ SHORT CIRCUIT CURRENT (mA)
MAX
MIN
N = 1000
MEDIAN
-32
-30
-28
-26
-24
-22
-20
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
IO- SHORT CIRCUIT CURRENT (mA)
N = 1000 MAX
MEDIAN
MIN
FN6377 Rev 5.00 Page 14 of 19
October 12, 2015
ISL28158, ISL28258
Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted
in the quality certifications found at www.intersil.com/en/support/qualandreliability.html
Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided that such
modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets are
current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its
subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
For additional products, see www.intersil.com/en/products.html
© Copyright Intersil Americas LLC 2007-2015. All Rights Reserved.
All trademarks and registered trademarks are the property of their respective owners.
Pin Descriptions
ISL28158
(6 Ld SOT-23)
ISL28158
(8 Ld SOIC)
ISL28258
(8 Ld SOIC)
(8 Ld MSOP) PIN NAME FUNCTION EQUIVALENT CIRCUIT
1, 5 NC Not connected
42
2 (A)
6 (B)
IN-
IN- (A)
IN- (B)
inverting input
Circuit 1
33
3 (A)
5 (B)
IN+
IN+ (A)
IN+ (B)
Non-inverting input See Circuit 1
2 4 4 V- Negative supply
Circuit 2
16
1 (A)
7 (B)
OUT
OUT (A)
OUT (B)
Output
Circuit 3
6 7 8 V+ Positive supply See Circuit 2
58 ENChip enable
Circuit 3
IN+IN-
V+
V-
V+
V-
CAPACITIVELY
COUPLED
ESD CLAMP
V+
V-
OUT
ISL28158, ISL28258
FN6377 Rev 5.00 Page 15 of 19
October 12, 2015
Applications Information
Introduction
The ISL28158 is a single CMOS rail-to-rail input, output (RRIO)
operational amplifier with an enable feature. The ISL28258 is a
dual version without the enable feature. Both devices are
designed to operate from single supply (2.4V to 5.5V) or dual
supplies (±1.2V to ±2.75V).
Rail-to-Rail Input/Output
These devices feature PMOS inputs with an input common
mode range that extends up to 0.3V beyond the V+ rail, and to
0.1V below the V- rail. The CMOS output features excellent
drive capability, typically swinging to within 6mV of either rail
with a 100k load.
Results of Over-Driving the Out put
Caution should be used when over-driving the output for long
periods of time. Over-driving the output can occur in two ways
1) The input voltage times the gain of the amplifier exceeds the
supply voltage by a large value or, 2) the output current
required is higher than the output stage can deliver. These
conditions can result in a shift in the Input Offset Voltage (VOS)
as much as 1µV/hr. of exposure under these conditions.
IN+ and IN- Input Protection
All input terminals have internal ESD protection diodes to both
positive and negative supply rails, limiting the input voltage to
within one diode beyond the supply rails. They also contain
back-to-back diodes across the input terminals (see “Pin
Descriptions” on page 14 - Circuit 1). For applications where the
input differential voltage is expected to exceed 0.5V, an external
series resistor must be used to ensure the input currents never
exceed 5mA (Figure 47).
Enable/Disable Feature
The ISL28158 offers an EN pin that disables the device when
pulled up to at least 2.0V. In the disabled state (output in a high
impedance state), the part consumes typically 10µA at room
temperature. By disabling the part, multiple ISL28158 parts can
be connected together as a MUX. In this configuration, the
outputs are tied together in parallel and a channel can be
selected by the EN pin. The loading effects of the feedback
resistors of the disabled amplifier must be considered when
multiple amplifier outputs are connected together. Note that
feed through from the IN+ to IN- pins occurs on any Mux Amp
disabled channel where the input differential voltage exceeds
0.5V (e.g., active channel
VOUT = 1V, while disabled channel VIN = GND), so the mux
implementation is best suited for small signal applications. If
large signals are required, use series IN+ resistors, or large
value RF
, to keep the feed through current low enough to
minimize the impact on the active channel. See “Limitations of
the Differential Input Protection” on page 15 for more details.
The EN pin also has an internal pull-down. If left open, the EN
pin will pull to the negative rail and the device will be enabled
by default. When not used, the EN pin should either be left
floating or connected directly to the -V pin.
Limitations of the Dif ferential Input Protection
If the input differential voltage is expected to exceed 0.5V, an
external current limiting resistor must be used to ensure the
input current never exceeds 5mA. For non-inverting unity gain
applications, the current limiting can be via a series IN+
resistor, or via a feedback resistor of appropriate value. For
other gain configurations, the series IN+ resistor is the best
choice, unless the feedback (RF) and gain setting (RG)
resistors are both sufficiently large to limit the input current to
5mA.
Large differential input voltages can arise from several
sources:
1) During open loop (comparator) operation. Used this way, the
IN+ and IN- voltages don’t track, so differentials arise.
2) When the amplifier is disabled but an input signal is still
present. An RL or RG to GND keeps the IN- at GND, while the
varying IN+ signal creates a differential voltage. Mux Amp
applications are similar, except that the active channel VOUT
determines the voltage on the IN- terminal.
3) When the slew rate of the input pulse is considerably faster
than the op amp’s slew rate. If the VOUT can’t keep up with the
IN+ signal, a differential voltage results, and visible distortion
occurs on the input and output signals. To avoid this issue,
keep the input slew rate below 0.1V/µs, or use appropriate
current limiting resistors.
Large (>2V) differential input voltages can also cause an
increase in disabled ICC.
FIGURE 47. INPUT CURRENT LIMITING
-
+
RIN
RL
VIN
VOUT
ISL28158, ISL28258
FN6377 Rev 5.00 Page 16 of 19
October 12, 2015
Using Only One Channel
The ISL28258 is a dual op amp. If the application only requires
one channel, the user must configure the unused channel to
prevent it from oscillating. The unused channel will oscillate if
the input and output pins are floating. This will result in higher
than expected supply currents and possible noise injection into
the channel being used. The proper way to prevent this
oscillation is to short the output to the negative input and
ground the positive input (as shown in Figure 48).
Current Limiting
These devices have no internal current-limiting circuitry. If the
output is shorted, it is possible to exceed the Absolute
Maximum Rating for output current or power dissipation,
potentially resulting in the destruction of the device.
Power Dissipation
It is possible to exceed the +125°C maximum junction
temperatures under certain load and power-supply conditions.
It is therefore important to calculate the maximum junction
temperature (TJMAX) for all applications to determine if power
supply voltages, load conditions, or package type need to be
modified to remain in the safe operating area. These
parameters are related in Equation 1:
where:
•P
DMAXTOTAL is the sum of the maximum power dissipation
of each amplifier in the package (PDMAX)
•PD
MAX for each amplifier can be calculated using Equation
2:
where:
•T
MAX = Maximum ambient temperature
•JA = Thermal resistance of the package
•PD
MAX = Maximum power dissipation of 1 amplifier
•V
S = Supply voltage (Magnitude of V+ and V-)
•I
MAX = Maximum supply current of 1 amplifier
•V
OUTMAX = Maximum output voltage swing of the
application
•R
L = Load resistance
About Intersil
Intersil Corporation is a leading provider of innovative power management and precision analog solutions. The company's products
address some of the largest markets within the industrial and infrastructure, mobile computing and high-end consumer markets.
For the most updated datasheet, application notes, related documentation and related parts, please see the respective product
information page found at www.intersil.com.
You may report errors or suggestions for improving this datasheet by visiting www.intersil.com/ask.
Reliability reports are also available from our website at www.intersil.com/support
FIGURE 48. PREVENTING OSCILLATIONS IN UNUSED
CHANNELS
-
+
TJMAX TMAX JAxPDMAXTOTAL
+= (EQ. 1)
PDMAX 2*VSISMAX VS
- VOUTMAXVOUTMAX
RL
----------------------------
+=
(EQ. 2)
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to the web to make sure that
you have the latest revision.
DATE REVISION CHANGE
October 12, 2015 FN6377.5 Updated Ordering Information Table on page 2.
Added Revision History and About Intersil sections.
ISL28158, ISL28258
FN6377 Rev 5.00 Page 17 of 19
October 12, 2015
Package Outline Drawing
P6.064A
6 LEAD SMALL OUTLINE TRANSISTOR PLASTIC PACKAGE
Rev 0, 2/10
1.60
0.08-0.20
SEE DETAIL X
(0.60)
0-3°
3 5
DETAIL "X"
SIDE VIEW
TYPICAL RECOMMENDED LAND PATTERN
TOP VIEW END VIEW
INDEX AREA
PIN 1
SEATING PLANE
GAUGE
0.45±0.1
(2 PLCS)
10° TYP
4
1.90
0.40 ±0.05
2.90
0.95
2.80
0.05-0.15
1.14 ±0.15
0.20 CA-B DM
(1.20)
(0.60)
(0.95)
(2.40)
0.10 C
1.45 MAX
C
B
A
D
3
3
0.20 C
(1.90)
2x
0.15 C
2x
D
0.15 C
2x
A-B
(0.25)
H
64
5
5
13
2
PLANE
Dimension is exclusive of mold flash, protrusions or gate burrs.
This dimension is measured at Datum “H”.
Package conforms to JEDEC MO-178AA.
Foot length is measured at reference to guage plane.
Dimensions in ( ) for Reference Only.
Dimensioning and tolerancing conform to ASME Y14.5M-1994.
6.
3.
5.
4.
2.
Dimensions are in millimeters.1.
NOTES:
ISL28158, ISL28258
FN6377 Rev 5.00 Page 18 of 19
October 12, 2015
Package Outline Drawing
M8.15E
8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE
Rev 0, 08/09
Unless otherwise specified, tolerance : Decimal ± 0.05
The pin #1 identifier may be either a mold or mark feature.
Interlead flash or protrusions shall not exceed 0.25mm per side.
Dimension does not include interlead flash or protrusions.
Dimensions in ( ) for Reference Only.
Dimensioning and tolerancing conform to AMSE Y14.5m-1994.
3.
5.
4.
2.
Dimensions are in millimeters.1.
NOTES:
DETAIL "A"
SIDE VIEW “A
TYPICAL RECOMMENDED LAND PATTERN
TOP VIEW
A
B
4
4
0.25 AMC B
C
0.10 C
5
ID MARK
PIN NO.1
(0.35) x 45°
SEATING PLANE
GAUGE PLANE
0.25
(5.40)
(1.50)
4.90 ± 0.10
3.90 ± 0.10
1.27 0.43 ± 0.076
0.63 ±0.23
4° ± 4°
DETAIL "A" 0.22 ± 0.03
0.175 ± 0.075
1.45 ± 0.1
1.75 MAX
(1.27) (0.60)
6.0 ± 0.20
Reference to JEDEC MS-012.
6.
SIDE VIEW “B”
ISL28158, ISL28258
FN6377 Rev 5.00 Page 19 of 19
October 12, 2015
Package Outline Drawing
M8.118A
8 LEAD MINI SMALL OUTLINE PLASTIC PACKAGE (MSOP)
Rev 0, 9/09
Plastic or metal protrusions of 0.15mm max per side are not
Dimensions “D” and “E1” are measured at Datum Plane “H”.
This replaces existing drawing # MDP0043 MSOP 8L.
Plastic interlead protrusions of 0.25mm max per side are not
Dimensioning and tolerancing conform to JEDEC MO-187-AA
6.
3.
5.
4.
2.
Dimensions are in millimeters.1.
NOTES:
DETAIL "X"
SIDE VIEW 1
TYPICAL RECOMMENDED LAND PATTERN
TOP VIEW
SIDE VIEW 2
included.
included.
GAUGE
PLANE
3°±3°
0.25 C A B
B
0.10 C
0.08 C A B
A
0.25
0.55 ± 0.15
0.95 BSC
0.18 ± 0.05
1.10 Max
C
H
4.40
3.00
5.80
0.65
3.0±0.1 4.9±0.15
1.40
0.40
0.65 BSC
PIN# 1 ID
DETAIL "X"
0.33 +0.07/ -0.08 0.10 ± 0.05
3.0±0.1
12
8
0.86±0.09
SEATING PLANE
and AMSE Y14.5m-1994.
Mouser Electronics
Authorized Distributor
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ISL28258SOICEVAL1Z