DATASHEET

ISL28158, ISL28258
Data Sheet
Micro-power Single and Dual Precision
Rail-to-Rail Input-Output (RRIO) Low Input
Bias Current Op Amps
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.
October 12, 2015
FN6377.5
Features
• 34µA typical supply current (ISL28158)
• 68µA typical supply current (ISL28258)
• 300µV maximum offset voltage (8 Ld SOIC)
• 1pA typical input bias current
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.
• 200kHz gain bandwidth product
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.
Applications
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.
• Sensor amplifiers
• 2.4V to 5.5V single supply voltage range
• Rail-to-rail input and output
• Enable pin (ISL28158 only)
• Pb-free (RoHS compliant)
• Battery- or solar-powered systems
• 4mA to 20mA current loops
• Handheld consumer products
• Medical devices
• ADC buffers
• DAC output amplifiers
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.
Pinouts
ISL28158
(8 LD SOIC)
TOP VIEW
ISL28158
(6 LD SOT-23)
TOP VIEW
OUT 1
V- 2
+ -
IN+ 3
6 V+
NC 1
5 EN
IN- 2
4 IN-
IN+ 3
8 EN
+
V- 4
IN-_A 2
IN+_A 3
8 V+
+ -
V- 4
6 IN-_B
5 IN+_B
1
5 NC
OUT_A 1
7 OUT_B
- +
6 OUT
ISL28258
(8 LD MSOP)
TOP VIEW
ISL28258
(8 LD SOIC)
TOP VIEW
OUT_A 1
7 V+
8 E
V+
BL
LA
I
A
IN-_A 2
7 OUT_B
- + AV
D
R
E
E
T
G
IN+_A 3 LON
6 IN-_B
OR
PP+ O
U
N
S
V- 4 OR
5 IN+_B
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2007, 2008, 2014, 2015. 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.
ISL28158, ISL28258
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.
2
FN6377.5
October 12, 2015
ISL28158, ISL28258
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)
θJA (°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 pulsed 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
-300
3.1
300
µV
DC SPECIFICATIONS
VOS
Input Offset Voltage
8 Ld SOIC
-650
6 Ld SOT-23
-550
650
5
-750
8 Ld MSOP
-350
Input Offset Voltage vs Temperature
IOS
Input Offset Current
3
-35
Input Bias Current
TA = -40°C to +85°C
-30
±5
µV/°C
35
±1
30
80
5
Common-Mode Voltage Range
Guaranteed by CMRR
0
CMRR
Common-Mode Rejection Ratio
VCM = 0V to 5V
75
pA
80
-80
VCM
µV
700
-80
IB
350
0.3
TA = -40°C to +85°C
µV
750
-700
ΔV OS
--------------ΔT
550
pA
V
98
dB
98
dB
220
V/mV
45
V/mV
70
PSRR
Power Supply Rejection Ratio
V+ = 2.4V to 5.5V
80
75
AVOL
Large Signal Voltage Gain
VO = 0.5V to 4.5V, RL = 100kΩ to VCM
100
75
VO = 0.5V to 4.5V, RL = 1kΩ to VCM
3
FN6377.5
October 12, 2015
ISL28158, ISL28258
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
VOUT
DESCRIPTION
Maximum Output Voltage Swing
CONDITIONS
MIN
(Note 5)
Output low, RL = 100kΩ to VCM
TYP
5.3
MAX
(Note 5)
UNIT
6
mV
20
Output low, RL = 1kΩ to VCM
135
150
mV
250
Output high, RL = 100kΩ to VCM
4.992
4.996
V
4.874
V
4.990
Output high, RL = 1kΩ to VCM
4.84
4.77
IS,ON
Quiescent Supply Current
IS,OFF
Quiescent Supply Current, Disabled
(ISL28158)
IO+
Short-Circuit Output Source Current
V+ = 5V, Enable
(ISL28158)
34
V+ = 5V
(ISL28258)
68
43
µA
55
86
µA
110
10
14
µA
19
RL = 10Ω to VCM
27
30
mA
20
IO-
Short-Circuit Output Sink Current
RL = 10Ω to VCM
-25
-22
mA
-15
VSUPPLY
Supply Operating Range
VENH
EN Pin High Level (ISL28158)
VENL
EN Pin Low Level (ISL28158)
IENH
EN Pin Input High Current
(ISL28158)
VEN = V+
1
IENL
EN Pin Input Low Current
(ISL28158)
VEN = V-
12
V+ to V-
2.4
5.5
2
V
V
0.8
V
1.5
µA
1.6
25
nA
30
AC SPECIFICATONS
GBW
Gain Bandwidth Product
AV = 100, RF = 100kΩ, RG = 1kΩ,
RL = 10kΩ to VCM
200
kHz
Unity Gain
Bandwidth
-3dB Bandwidth
AV =1, RF = 0Ω, VOUT = 10mVP-P
420
kHz
eN
Input Noise Voltage Peak-to-Peak
f = 0.1Hz to 10Hz
1.4
µVP-P
Input Noise Voltage Density
fO = 1kHz
64
nV/√Hz
iN
Input Noise Current Density
fO = 10kHz
0.19
pA/√Hz
CMRR @ 60Hz
Input Common Mode Rejection Ratio
VCM = 1VP-P, RL = 10kΩ to VCM
-70
dB
PSRR+ @
120Hz
Power Supply Rejection Ratio (V+)
V+, V- = ±1.2V and ±2.5V,
VSOURCE = 1VP-P, RL = 10kΩ to VCM
-64
dB
PSRR- @
120Hz
Power Supply Rejection Ratio (V-)
V+, V- = ±1.2V and ±2.5V
VSOURCE = 1VP-P, RL = 10kΩ to VCM
-85
dB
0.1
V/µs
TRANSIENT RESPONSE
SR
Slew Rate
4
FN6377.5
October 12, 2015
ISL28158, ISL28258
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
tr, tf, Large
Signal
tr, tf, Small
Signal
tEN
DESCRIPTION
CONDITIONS
MIN
(Note 5)
TYP
MAX
(Note 5)
UNIT
Rise Time, 10% to 90% VOUT
AV = +2, VOUT = 1VP-P, Rg = Rf = 10kΩ
RL = 10kΩ to VCM
10
µs
Fall Time, 90% to 10% VOUT
AV = +2, VOUT = 1VP-P, Rg = Rf = 10kΩ
RL = 10kΩ to VCM
9
µs
Rise Time, 10% to 90% VOUT
AV = +2, VOUT = 10mVP-P,
Rg = Rf = RL = 10kΩ to VCM
650
ns
Fall Time, 90% to 10% VOUT
AV = +2, VOUT = 10mVP-P,
Rg = Rf = RL = 10kΩ to VCM
640
ns
Enable to Output Turn-on Delay Time, 10% VEN = 5V to 0V, AV = +2,
EN to 10% VOUT
Rg = Rf = RL = 1k to VCM
15
µs
Enable to Output Turn-off Delay Time, 10% VEN = 0V to 5V, AV = +2,
Rg = Rf = RL = 1k to VCM
EN to 10% VOUT
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.
5
FN6377.5
October 12, 2015
ISL28158, ISL28258
Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open.
1
-1
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
0
Rf = Rg = 499
-2
Rf = Rg = 1k
-3
-4
-5
V+ = 5V
RL = 1k
CL = 16.3pF
AV = +2
VOUT = 10mVP-P
-6
-7
-8
-9
10
100
Rf = Rg = 10k
Rf = Rg = 4.99k
1k
10k
100k
1M
FREQUENCY (Hz)
1
0
0
-1
-1
-2
VOUT = 10mV
-3
VOUT = 50mV
-4
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
1
VOUT = 100mV
-5
VOUT = 1V
V+ = 5V
RL = 10k
CL = 16.3pF
AV = +1
VOUT = 10mVP-P
-6
-7
-8
-9
1M
FIGURE 2. GAIN vs FREQUENCY vs VOUT, RL = 1k
FIGURE 1. GAIN vs FREQUENCY vs FEEDBACK RESISTOR
VALUES Rf/Rg
1k
10k
100k
FREQUENCY (Hz)
1M
FIGURE 3. GAIN vs FREQUENCY vs VOUT, RL = 10k
RL = 10k
GAIN (dB)
0
-1
-2
-6
1k
VOUT = 1V
-5 V+ = 5V
-6 RL = 100k
CL = 16.3pF
-7
AV = +1
-8 V
OUT = 10mVP-P
-9
1k
10k
100k
FREQUENCY (Hz)
AV = 1001
50
1
-5
VOUT = 100mV
-4
60
RL = 1k
2
-4
VOUT = 50mV
-3
70
3
-3
VOUT = 10mV
-2
RL = 100k
V+ = 5V
CL = 16.3pF
AV = +1
VOUT = 10mVP-P
40
20
0
FIGURE 5. GAIN vs FREQUENCY vs RL
6
1M
AV = 101
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
V+ = 5V
CL = 16.3pF
RL = 10k
VOUT = 10mVP-P
30
10
10k
100k
FREQUENCY (Hz)
1M
FIGURE 4. GAIN vs FREQUENCY vs VOUT, RL = 100k
4
NORMALIZED GAIN (dB)
4
VOUT = 10mV
3
2
VOUT = 50mV
1
0
-1
VOUT = 100mV
-2
-3 V = 5V
+
-4 RL = 1k
-5 CL = 16.3pF
VOUT = 1V
-6 AV = +1
-7 VOUT = 10mVP-P
-8
1k
10k
100k
FREQUENCY (Hz)
-10
10
AV = 10
AV = 1
100
1k
10k
FREQUENCY (Hz)
100k
1M
FIGURE 6. FREQUENCY RESPONSE vs CLOSED LOOP GAIN
FN6377.5
October 12, 2015
ISL28158, ISL28258
Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open.
8
1
V+ = 5V
-1
V+ = 2.4V
-2
-3
-4
-6
-7
RL = 10k
CL = 16.3pF
AV = +1
VOUT = 10mVP-P
-8
1k
10k
100k
FREQUENCY (Hz)
CL = 98.3pF
CL = 72.3pF
CL = 55.3pF
6
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
0
-5
4
2
0
-2
CL = 43.3pF
-4
CL = 34.3pF
V+ = 5V
-6 RL = 10k
AV = +1
-8 V
OUT = 10mVP-P
-10
1k
1M
FIGURE 7. GAIN vs FREQUENCY vs SUPPLY VOLTAGE
0
-10
-10
PSRR (dB)
CMRR (dB)
1M
PSRR-
-20
-20
-30
-40
-50
V+ = 2.4V, 5V
RL = 10k
CL = 16.3pF
AV = +1
VCM = 1VP-P
-60
-70
-80
100
1k
10k
FREQUENCY (Hz)
100k
-30
PSRR+
-40
-50
V+ = 2.4V
RL = 10k
CL = 16.3pF
AV = +1
VCM = 1VP-P
-60
-70
-80
-90
-100
10
1M
FIGURE 9. CMRR vs FREQUENCY, V+ = 2.4V AND 5V
100
1k
10k
FREQUENCY (Hz)
100k
1M
FIGURE 10. PSRR vs FREQUENCY, V+, V- = ±1.2V
10
1000
-10
INPUT VOLTAGE NOISE (nV/√Hz)
0
PSRR-
-20
-30
PSRR+
-40
-50
-60
V+ = 5V
RL = 10k
CL = 16.3pF
AV = +1
VCM = 1VP-P
-70
-80
-90
-100
10
10k
100k
FREQUENCY (Hz)
10
0
-90
10
CL = 16.3pF
FIGURE 8. GAIN vs FREQUENCY vs CL
10
PSRR (dB)
(Continued)
100
1k
10k
100k
FREQUENCY (Hz)
FIGURE 11. PSRR vs FREQUENCY, V+, V- = ±2.5V
7
1M
V+ = 5V
RL = 10k
CL = 16.3pF
AV = +1
100
10
1
10
100
1k
10k
100k
FREQUENCY (Hz)
FIGURE 12. INPUT VOLTAGE NOISE DENSITY vs FREQUENCY
FN6377.5
October 12, 2015
ISL28158, ISL28258
Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open.
0
V+ = 5V
RL = 10k
CL = 16.3pF
AV = +1
1
-0.4
-0.6
-0.8
-1.0
-1.2
-1.4
1
10
100
1k
FREQUENCY (Hz)
10k
-1.6
100k
0.4
0.018
SMALL SIGNAL (V)
0.020
0.2
V+, V- = ±2.5V
RL = 10k
CL = 16.3pF
Rg = Rf = 10k
AV = 2
VOUT = 1VP-P
-0.2
-0.4
-0.6
0
50
100
150
1
2
300
350
5
6
TIME (s)
7
8
9
10
0.014
V+, V- = ±2.5V
RL = 10k
CL = 16.3pF
Rg = Rf = 10k
AV = 2
VOUT = 10mVP-P
0.012
0.010
0.006
400
FIGURE 15. LARGE SIGNAL STEP RESPONSE
0
50
100
150
200
250
TIME (µs)
300
350
400
FIGURE 16. SMALL SIGNAL STEP RESPONSE
6
1.2
V-OUT
V-ENABLE
5
1.0
4
0.8
V+ = 5V
Rg = Rf = 10k
CL = 16.3pF
AV = +2
VOUT = 1VP-P
3
2
1
0.6
0.4
0.2
RL = 10k
0
-1
4
0.016
0.008
200
250
TIME (µs)
V-ENABLE (V)
3
FIGURE 14. INPUT VOLTAGE NOISE 0.1Hz TO 10Hz
0.6
0
0
OUTPUT (V)
0.1
FIGURE 13. INPUT CURRENT NOISE DENSITY vs FREQUENCY
LARGE SIGNAL (V)
RL = 10k
V+ = 5V
CL = 16.3pF AV = 1000
Rg = 100, Rf = 100k
-0.2
INPUT NOISE (µV)
INPUT CURRENT NOISE (pA/√Hz)
10
(Continued)
0
0
50
100
150
200
250
TIME (µs)
300
350
-0.2
400
FIGURE 17. ENABLE TO OUTPUT RESPONSE
8
FN6377.5
October 12, 2015
ISL28158, ISL28258
500
100
400
80
300
60
200
40
I-BIAS (pA)
VOS (µV)
Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open.
100
0
-100
V+ = 5V
RL = OPEN
Rf = 100k, Rg = 100
AV = +1000
-200
-300
-400
-500
-1
0
1
2
20
0
V+ = 5V
RL = OPEN
Rf = 100k, Rg = 100
AV = +1000
-20
-40
-60
-80
3
VCM (V)
4
5
6
FIGURE 18. INPUT OFFSET VOLTAGE vs COMMON MODE
INPUT VOLTAGE
50
(Continued)
-100
-1
0
1
2
3
VCM (V)
4
5
6
FIGURE 19. INPUT BIAS CURRENT vs COMMON MODE
INPUT VOLTAGE
80
N = 1000
N = 12
75
45
CURRENT (µA)
CURRENT (µA)
MAX
40
MEDIAN
35
MIN
30
MAX
65
MEDIAN
60
MIN
55
25
20
-40
70
-20
0
20
40
60
80
100
50
-40
120
-20
0
20
FIGURE 20. SUPPLY CURRENT ENABLED (SINGLE) vs
TEMPERATURE, V+, V- = ±2.5V
14
13
80
100
120
500
N = 1000
MAX
300
11
MAX
100
VOS (µV)
CURRENT (µA)
60
FIGURE 21. SUPPLY CURRENT (DUAL) vs TEMPERATURE,
V+, V- = ±2.5V
N = 1000
12
10
MEDIAN
9
8
MEDIAN
-100
MIN
-300
MIN
7
-500
6
5
-40
40
TEMPERATURE (°C)
TEMPERATURE (°C)
-20
0
20
40
60
80
100
120
TEMPERATURE (°C)
FIGURE 22. SUPPLY CURRENT DISABLED (SINGLE) vs
TEMPERATURE, V+, V- = ±2.5V
9
-700
-40
-20
0
20
40
60
80
100
120
TEMPERATURE (°C)
FIGURE 23. VOS (SOIC PKG) vs TEMPERATURE, VIN = 0V,
V+, V- = ±2.75V
FN6377.5
October 12, 2015
ISL28158, ISL28258
Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open.
500
700
N = 1000
N = 1000
500
300
MAX
MEDIAN
VOS (µV)
VOS (µV)
MAX
300
100
-100
MIN
100
MEDIAN
-100
MIN
-300
-300
-500
-700
-40
(Continued)
-500
-20
0
20
40
60
80
100
-700
-40
120
-20
0
TEMPERATURE (°C)
MAX
600
200
VOS (µV)
VOS (µV)
-200
MEDIAN
0
-200
-400
-400
-600
-600
MIN
-800
MIN
-800
-20
0
20
40
60
80
100
120
-1000
-40
-20
0
FIGURE 26. VOS (SOT PKG) vs TEMPERATURE, VIN = 0V,
V+, V- = ±2.75V
40
60
80
100
120
FIGURE 27. VOS (SOT PKG) vs TEMPERATURE, VIN = 0V,
V+, V- = ±2.5V
600
N = 1000
N = 12
400
MAX
600
400
200
200
VOS (µV)
VOS (µV)
20
TEMPERATURE (°C)
TEMPERATURE (°C)
MEDIAN
0
-200
MAX
MEDIAN
0
-200
-400
MIN
-600
MIN
-400
-800
-1000
-40
120
400
MEDIAN
0
800
100
MAX
600
200
1000
80
N = 1000
800
400
-1000
-40
60
FIGURE 25. VOS (SOIC PKG) vs TEMPERATURE, VIN = 0V,
V+, V- = ±1.2V
1000
N = 1000
40
TEMPERATURE (°C)
FIGURE 24. VOS (SOIC PKG) vs TEMPERATURE, VIN = 0V,
V+, V- = ±2.5V
800
20
-20
0
20
40
60
80
100
120
TEMPERATURE (°C)
FIGURE 28. VOS (SOT PKG) vs TEMPERATURE, VIN = 0V,
V+, V- = ±1.2V
10
-600
-40
-20
0
20
40
60
80
100
120
TEMPERATURE (°C)
FIGURE 29. VOS (MSOP PKG) vs TEMPERATURE, VIN = 0V,
V+, V- = ±2.5V
FN6377.5
October 12, 2015
ISL28158, ISL28258
Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open.
600
250
N = 12
MAX
N = 1000
400
200
200
MEDIAN
0
-200
MEDIAN
150
MAX
IBIAS+ (pA)
VOS (µV)
(Continued)
100
MIN
50
MIN
-400
0
-600
-40
-20
0
20
40
60
80
100
-50
-40
120
-20
0
TEMPERATURE (°C)
FIGURE 30. VOS (MSOP PKG) vs TEMPERATURE, VIN = 0V,
V+, V- = ±1.2V
500
N = 1000
300
IBIAS+ (pA)
IBIAS- (pA)
100
120
MAX
250
MEDIAN
250
200
150
MIN
100
MEDIAN
200
150
100
MIN
50
50
0
0
-50
-40
-20
0
20
40
60
80
100
-50
-40
120
-20
0
TEMPERATURE (°C)
MAX
60
80
100
120
N = 1000
0
350
-20
300
MEDIAN
-40
IOS (pA)
250
200
150
MAX
-60
-80
MEDIAN
-100
MIN
100
-120
50
MIN
-140
0
-50
-40
40
FIGURE 33. IBIAS+ vs TEMPERATURE, V+, V- = ±1.2V
20
N = 1000
20
TEMPERATURE (°C)
FIGURE 32. IBIAS- vs TEMPERATURE, V+, V- = ±2.5V
IBIAS- (pA)
80
300
MAX
350
400
60
350
400
450
40
FIGURE 31. IBIAS+ vs TEMPERATURE, V+, V- = ±2.5V
N = 1000
450
20
TEMPERATURE (°C)
-20
0
20
40
60
80
100
120
TEMPERATURE (°C)
FIGURE 34. IBIAS- vs TEMPERATURE, V+, V- = ±1.2V
11
-160
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
100
120
FIGURE 35. IOS vs TEMPERATURE, V+, V- = ±2.5
FN6377.5
October 12, 2015
ISL28158, ISL28258
Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open.
30
140
N = 1000
10
(Continued)
N = 1000
130
MAX
-10
120
CMRR (dB)
IOS (pA)
-30
MAX
-50
-70
MEDIAN
-90
110
MEDIAN
100
90
-110
MIN
-130
-150
-40
-20
0
20
40
60
80
80
100
MIN
70
-40
120
-20
0
TEMPERATURE (°C)
FIGURE 36. IOS vs TEMPERATURE, V+, V- = ±1.2V
140
AVOL (V/mV)
PSRR (dB)
110
100
MEDIAN
90
100
MEDIAN
MIN
N = 1000
MAX
-20
0
20
40
60
80
TEMPERATURE (°C)
100
120
FIGURE 39. AVOL vs TEMPERATURE, V+, V- = ±2.5V,
VO = -2V TO +2V, RL = 100k
N = 1000
4.91
60
4.90
VOUT (V)
55
AVOL (V/mV)
250
4.92
70
MEDIAN
45
40
MIN
MAX
4.89
4.88
MEDIAN
4.87
4.86
30
MIN
4.85
25
20
-40
300
100
-40
120
FIGURE 38. PSRR vs TEMPERATURE, V+, V- = ±1.2V TO
±2.75V
35
MAX
150
20
40
60
80
TEMPERATURE (°C)
120
200
MIN
0
100
N = 1000
350
120
50
80
400
MAX
65
60
450
130
-20
40
FIGURE 37. CMRR vs TEMPERATURE, VCM = -2.5V TO +2.5V,
V+, V- = ±2.5V
N = 1000
80
-40
20
TEMPERATURE (°C)
-20
0
20
40
60
80
TEMPERATURE (°C)
100
FIGURE 40. AVOL vs TEMPERATURE, V+, V- = ±2.5V,
VO = -2V TO +2V, RL = 1k
12
120
4.84
-40
-20
0
20
40
60
80
100
120
TEMPERATURE (°C)
FIGURE 41. VOUT HIGH vs TEMPERATURE, V+, V- =±2.5V,
RL = 1k
FN6377.5
October 12, 2015
ISL28158, ISL28258
Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open.
4.9980
190
N = 1000
180
4.9975
N = 1000
MAX
170
VOUT (mV)
MAX
VOUT (V)
(Continued)
4.9970
MEDIAN
4.9965
MIN
4.9960
160
150
140
MEDIAN
130
120
MIN
110
4.9955
-40
-20
0
20
40
60
80
100
100
-40
120
-20
0
N = 1000
7.0
MAX
VOUT (mV)
6.5
6.0
5.5
MEDIAN
5.0
MIN
4.5
4.0
-40
-20
0
20
40
60
80
100
120
45
60
80
100
120
N = 1000
40
MAX
35
MEDIAN
30
25
MIN
20
-40
-20
0
TEMPERATURE (°C)
FIGURE 44. VOUT LOW vs TEMPERATURE, V+, V- = ±2.5V,
RL = 100k
IO- SHORT CIRCUIT CURRENT (mA)
40
FIGURE 43. VOUT LOW vs TEMPERATURE, V+, V- = ±2.5V,
RL = 1k
IO+ SHORT CIRCUIT CURRENT (mA)
FIGURE 42. VOUT HIGH vs TEMPERATURE, V+, V- = ±2.5V,
RL = 100k
7.5
20
TEMPERATURE (°C)
TEMPERATURE (°C)
20
40
60
80
TEMPERATURE (°C)
100
120
FIGURE 45. IO+ SHORT CIRCUIT OUTPUT CURRENT vs
TEMPERATURE VIN = -2.55V, RL = 10k,
V+, V- = ±2.5V
-20
N = 1000
MAX
-22
-24
MEDIAN
-26
MIN
-28
-30
-32
-40
-20
0
20
40
60
80
100
120
TEMPERATURE (°C)
FIGURE 46. IO- SHORT CIRCUIT OUTPUT CURRENT vs TEMPERATURE VIN = +2.55V, RL = 10k, V+, V- = ±2.5V
13
FN6377.5
October 12, 2015
ISL28158, ISL28258
Pin Descriptions
ISL28158
(6 Ld SOT-23)
ISL28158
(8 Ld SOIC)
ISL28258
(8 Ld SOIC)
(8 Ld MSOP)
1, 5
4
2
2 (A)
6 (B)
PIN NAME
FUNCTION
NC
Not connected
ININ- (A)
IN- (B)
inverting input
EQUIVALENT CIRCUIT
V+
IN-
IN+
VCircuit 1
3
2
3 (A)
5 (B)
IN+
IN+ (A)
IN+ (B)
4
V-
3
4
Non-inverting input
Negative supply
See Circuit 1
V+
CAPACITIVELY
COUPLED
ESD CLAMP
VCircuit 2
1
6
1 (A)
7 (B)
OUT
OUT (A)
OUT (B)
Output
V+
OUT
VCircuit 3
6
7
5
8
8
V+
Positive supply
EN
Chip enable
See Circuit 2
V+
LOGIC
PIN
VCircuit 3
14
FN6377.5
October 12, 2015
ISL28158, ISL28258
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 100kΩ load.
Results of Over-Driving the Output
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).
VIN
RIN
VOUT
RL
+
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 Differential 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
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
15
FN6377.5
October 12, 2015
ISL28158, ISL28258
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).
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:
(EQ. 1)
T JMAX = T MAX + ( θ JA xPD MAXTOTAL )
where:
• PDMAXTOTAL is the sum of the maximum power
dissipation of each amplifier in the package (PDMAX)
• PDMAX for each amplifier can be calculated using
Equation 2:
-
V OUTMAX
PD MAX = 2*V S × I SMAX + ( V S - V OUTMAX ) × ---------------------------R
+
L
(EQ. 2)
FIGURE 48. PREVENTING OSCILLATIONS IN UNUSED
CHANNELS
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
where:
• TMAX = Maximum ambient temperature
• θJA = Thermal resistance of the package
• PDMAX = Maximum power dissipation of 1 amplifier
• VS = Supply voltage (Magnitude of V+ and V-)
• IMAX = Maximum supply current of 1 amplifier
• VOUTMAX = Maximum output voltage swing of the
application
• RL = Load resistance
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
October 12, 2015
FN6377.5
CHANGE
Updated Ordering Information Table on page 2.
Added Revision History and About Intersil sections.
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
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9001 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets 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
16
FN6377.5
October 12, 2015
ISL28158, ISL28258
Package Outline Drawing
P6.064A
6 LEAD SMALL OUTLINE TRANSISTOR PLASTIC PACKAGE
Rev 0, 2/10
1.90
0-3°
0.95
D
0.08-0.20
A
5
6
4
PIN 1
INDEX AREA
2.80
3
1.60
3
0.15 C D
2x
1
(0.60)
3
2
0.20 C
2x
0.40 ±0.05
B
5
SEE DETAIL X
3
0.20 M C A-B
D
TOP VIEW
2.90
5
END VIEW
10° TYP
(2 PLCS)
0.15 C A-B
2x
H
1.14 ±0.15
C
SIDE VIEW
0.10 C
0.05-0.15
1.45 MAX
SEATING PLANE
DETAIL "X"
(0.25) GAUGE
PLANE
0.45±0.1
4
(0.60)
(1.20)
NOTES:
(2.40)
(0.95)
1.
Dimensions are in millimeters.
Dimensions in ( ) for Reference Only.
2.
Dimensioning and tolerancing conform to ASME Y14.5M-1994.
3.
Dimension is exclusive of mold flash, protrusions or gate burrs.
4.
Foot length is measured at reference to guage plane.
5.
This dimension is measured at Datum “H”.
6.
Package conforms to JEDEC MO-178AA.
(1.90)
TYPICAL RECOMMENDED LAND PATTERN
17
FN6377.5
October 12, 2015
ISL28158, ISL28258
Package Outline Drawing
M8.15E
8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE
Rev 0, 08/09
4
4.90 ± 0.10
A
DETAIL "A"
0.22 ± 0.03
B
6.0 ± 0.20
3.90 ± 0.10
4
PIN NO.1
ID MARK
5
(0.35) x 45°
4° ± 4°
0.43 ± 0.076
1.27
0.25 M C A B
SIDE VIEW “B”
TOP VIEW
1.75 MAX
1.45 ± 0.1
0.25
GAUGE PLANE
C
SEATING PLANE
0.10 C
0.175 ± 0.075
SIDE VIEW “A
0.63 ±0.23
DETAIL "A"
(0.60)
(1.27)
NOTES:
(1.50)
(5.40)
1.
Dimensions are in millimeters.
Dimensions in ( ) for Reference Only.
2.
Dimensioning and tolerancing conform to AMSE Y14.5m-1994.
3.
Unless otherwise specified, tolerance : Decimal ± 0.05
4.
Dimension does not include interlead flash or protrusions.
Interlead flash or protrusions shall not exceed 0.25mm per side.
5.
The pin #1 identifier may be either a mold or mark feature.
6.
Reference to JEDEC MS-012.
TYPICAL RECOMMENDED LAND PATTERN
18
FN6377.5
October 12, 2015
ISL28158, ISL28258
Package Outline Drawing
M8.118A
8 LEAD MINI SMALL OUTLINE PLASTIC PACKAGE (MSOP)
Rev 0, 9/09
3.0±0.1
8
A
0.25
CAB
3.0±0.1
4.9±0.15
DETAIL "X"
1.10 Max
PIN# 1 ID
B
SIDE VIEW 2
1
0.18 ± 0.05
2
0.65 BSC
TOP VIEW
0.95 BSC
0.86±0.09
H
GAUGE
PLANE
C
0.25
SEATING PLANE
0.33 +0.07/ -0.08
0.08 C A B
0.10 ± 0.05
3°±3°
0.10 C
0.55 ± 0.15
DETAIL "X"
SIDE VIEW 1
5.80
NOTES:
4.40
3.00
1.
Dimensions are in millimeters.
2.
Dimensioning and tolerancing conform to JEDEC MO-187-AA
and AMSE Y14.5m-1994.
3.
Plastic or metal protrusions of 0.15mm max per side are not
included.
4.
Plastic interlead protrusions of 0.25mm max per side are not
included.
5.
Dimensions “D” and “E1” are measured at Datum Plane “H”.
6.
This replaces existing drawing # MDP0043 MSOP 8L.
0.65
0.40
1.40
TYPICAL RECOMMENDED LAND PATTERN
19
FN6377.5
October 12, 2015
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