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.
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+ = 5V, V- = 0V,V
CM
= 2.5V, R
L
= Open, T
A
= +25°C unless otherwise specified.
Boldface limits apply over the operating temperature range, -40°C to +125°C.
Temperature data
established by characterization.
CONDITIONS
8 Ld SOIC
6 Ld SOT-23
MIN
(Note 1)
-300
-650
-550
-750
TYP
±
6
PARAMETER
V
OS
DESCRIPTION
Input Offset Voltage
MAX
(Note 1)
300
650
550
750
UNIT
µV
µV
µV/°C
±
6
ΔV
OS
---------------
-
ΔT
I
OS
I
B
CMIR
CMRR
PSRR
A
VOL
Input Offset Voltage vs Temperature
8 Ld SOIC
0.6
Input Offset Current
T
A
= -40°C to +85°C
Input Bias Current
T
A
= -40°C to +85°C
Common-Mode Voltage Range
Common-Mode Rejection Ratio
Power Supply Rejection Ratio
Large Signal Voltage Gain
Guaranteed by CMRR
V
CM
= 0V to 5V
V
+
= 2.4V to 5.5V
V
O
= 0.5V to 4.5V, R
L
= 100kΩ to V
CM
V
O
= 0.5V to 4.5V, R
L
= 1kΩ to V
CM
-35
-80
-30
-80
0
75
70
80
75
200
150
±
5
35
80
30
80
5
pA
pA
V
dB
dB
V/mV
V/mV
±
1
98
98
580
50
3
50
6
8
70
110
V
OUT
Maximum Output Voltage Swing
Output low, R
L
= 100kΩ to V
CM
Output low, R
L
= 1kΩ to V
CM
Output high, R
L
= 100kΩ to V
CM
Output high, R
L
= 1kΩ to V
CM
4.994
4.99
4.93
4.89
0.7
0.4
mV
mV
V
V
4.998
4.95
0.9
10
1.1
1.4
14
16
I
S,ON
I
S,OFF
Supply Current, Enabled
Supply Current, Disabled (ISL28138)
mA
µA
2
FN6336.2
February 19, 2008
ISL28138, ISL28238
Electrical Specifications
V+ = 5V, V- = 0V,V
CM
= 2.5V, R
L
= Open, T
A
= +25°C unless otherwise specified.
Boldface limits apply over the operating temperature range, -40°C to +125°C.
Temperature data
established by characterization.
(Continued)
CONDITIONS
R
L
= 10Ω
R
L
= 10Ω
V+ to V-, Guararteed by PSRR
MIN
(Note 1)
48
45
50
45
2.4
2
0.8
V
EN
= V+
V
EN
= V-
1
12
1.5
1.6
25
30
TYP
75
68
5.5
MAX
(Note 1)
UNIT
mA
mA
V
V
V
µA
nA
PARAMETER
I
O
+
I
O
-
V
SUPPLY
V
ENH
V
ENL
I
ENH
I
ENL
DESCRIPTION
Short-Circuit Output Source Current
Short-Circuit Output Sink Current
Supply Operating Range
EN Pin High Level (ISL28138)
EN Pin Low Level(ISL28138)
EN Pin Input High Curren (ISL28138)
EN Pin Input Low Current (ISL28138)
AC SPECIFICATONS
GBW
Unity Gain
Bandwidth
e
N
Gain Bandwidth Product
-3dB Bandwidth
Input Noise Voltage Peak-to-Peak
Input Noise Voltage Density
i
N
Input Noise Current Density
A
V
= 100, R
F
= 100kΩ, R
G
= 1kΩ,
R
L
= 10kΩ to V
CM
A
V
=1, R
F
= 0Ω, V
OUT
= 10mV
P-P
,
R
L
= 10kΩ to V
CM
f = 0.1Hz to 10Hz
f
O
= 1kHz
f
O
= 1kHz
V
CM
= 1V
P-P
, R
L
= 10kΩ to V
CM
V
+
, V
-
= ±1.2V and ±2.5V,
V
SOURCE
= 1V
P-P
, R
L
= 10kΩ to V
CM
V
+
, V
-
= ±1.2V and ±2.5V
V
SOURCE
= 1V
P-P
, R
L
= 10kΩ to V
CM
4.5
13
2
26
0.12
85
-82
-100
MHz
MHz
µV
P-P
nV/√Hz
pA/√Hz
dB
dB
dB
CMRR @ 60Hz Input Common Mode Rejection Ratio
PSRR- @
120Hz
PSRR+ @
120Hz
Power Supply Rejection Ratio (V-)
Power Supply Rejection Ratio (V+)
TRANSIENT RESPONSE
SR
t
r
, t
f
, Large
Signal
Slew Rate
Rise Time, 10% to 90%, V
OUT
Fall Time, 90% to 10%, V
OUT
t
r
, t
f
, Small
Signal
Rise Time, 10% to 90%, V
OUT
Fall Time, 90% to 10%, V
OUT
t
EN
Enable to Output Turn-on Delay Time, 10%
EN to 10% V
OUT
, (ISL28138)
Enable to Output Turn-off Delay Time, 10%
EN to 10% V
OUT
, (ISL28138)
NOTE:
1. Parts are 100% tested at +25°C. Temperature limits established by characterization and are not production tested.
±
4.8
V/µs
ns
ns
ns
ns
µs
µs
A
V
= +2
,
V
OUT
= 3V
P-P
, R
G
= R
F
= 10kΩ
R
L
= 10kΩ to V
CM
A
V
= +2
,
V
OUT
= 3V
P-P
, R
G
= R
F
= 10kΩ
R
L
= 10kΩ to V
CM
A
V
= +2
,
V
OUT
= 10mV
P-P
,
R
G
= R
F
= R
L
= 10kΩ to V
CM
A
V
= +2
,
V
OUT
= 10mV
P-P
,
R
G
= R
F
= R
L
= 10kΩ to V
CM
V
EN
= 5V to 0V, A
V
= +2,
R
G
=
R
F
=
R
L
= 1k
to V
CM
V
EN
= 0V to 5V, A
V
= +2,
R
G
=
R
F
=
R
L
= 1k
to V
CM
530
530
50
50
5
0.2
3
FN6336.2
February 19, 2008
ISL28138, ISL28238
Typical Performance Curves
V+ = 5V, V- = 0V,V
CM
= 2.5V, R
L
= Open, unless otherwise specified.
15
NORMALIZED GAIN (dB)
10
R
f
= R
g
= 100k
5
0
V
+
= 5V
-5 R
L
= 1k
C
L
= 16.3pF
-10 A
V
= +2
V
OUT
= 10mV
P-P
-15
100
1k
10k
R
f
= R
g
= 10k
1
0
NORMALIZED GAIN (dB)
-1
-2
-3
-4
-5
-6 V = 5V
+
-7 R
L
= 1k
C
L
= 16.3pF
-8
A
V
= +1
-9
1k
10k
V
OUT
= 100mV
V
OUT
= 50mV
V
OUT
= 10mV
V
OUT
= 1V
R
f
= R
g
= 1k
100k
1M
10M
100M
100k
1M
10M
100M
FREQUENCY (Hz)
FREQUENCY (Hz)
FIGURE 1. GAIN vs FREQUENCY vs FEEDBACK RESISTOR
VALUES R
f
/R
g
FIGURE 2. GAIN vs FREQUENCY vs V
OUT,
R
L
= 1k
1
0
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
-1
-2
-3
-4
-5
-6
-7
-8
-9
1k
V
+
= 5V
R
L
= 10k
C
L
= 16.3pF
A
V
= +1
10k
100k
1M
10M
100M
V
OUT
= 100mV
V
OUT
= 50mV
V
OUT
= 10mV
V
OUT
= 1V
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
FREQUENCY (Hz)
V
+
= 5V
R
L
= 100k
C
L
= 16.3pF
A
V
= +1
1k
10k
100k
1M
10M
100M
V
OUT
= 100mV
V
OUT
= 50mV
V
OUT
= 10mV
V
OUT
= 1V
FREQUENCY (Hz)
FIGURE 3. GAIN vs FREQUENCY vs V
OUT
, R
L
= 10k
FIGURE 4. GAIN vs FREQUENCY vs V
OUT
, R
L
= 100k
1
0
NORMALIZED GAIN (dB)
-1
-2
-3
-4
-5
-6
-7
-8
-9
V
+
= 5V
V
OUT
= 10mV
P-P
C
L
= 16.3pF
A
V
= +1
1k
10k
100k
R
L
= 1k
R
L
= 10k
GAIN (dB)
R
L
= 100k
70
60
50
A
V
= 101
40
30
A
V
= 10
20
10
0
A
V
= 1
V
+
= 5V
C
L
= 16.3pF
R
L
= 10k
V
OUT
= 10mV
P-P
A
V
= 1001
A
V
= 1, R
g
= INF, R
f
= 0
A
V
= 10, R
g
= 1k, R
f
= 9.09k
A
V
= 101, R
g
= 1k, R
f
= 100k
A
V
= 1001, R
g
= 1k, R
f
= 1M
1M
10M
100M
-10
100
1k
10k
100k
1M
10M
100M
FREQUENCY (Hz)
FREQUENCY (Hz)
FIGURE 5. GAIN vs FREQUENCY vs R
L
FIGURE 6. FREQUENCY RESPONSE vs CLOSED LOOP GAIN
4
FN6336.2
February 19, 2008
ISL28138, ISL28238
Typical Performance Curves
V+ = 5V, V- = 0V,V
CM
= 2.5V, R
L
= Open, unless otherwise specified.
1
0
NORMALIZED GAIN (dB)
-1
-2
-3
-4
-5
-6
-7
-8
R
L
= 10k
C
L
= 16.3pF
A
V
= +1
V
OUT
= 10mV
P-P
100k
1M
FREQUENCY (Hz)
10M
100M
V
+
= 2.4V
NORMALIZED GAIN (dB)
V
+
= 5V
8
7
6
5
4
3
2
1
0
-1
-2
-3 V
+
= 5V
-4 R
L
= 1k
-5 A = +1
V
-6
V
OUT
= 10mV
P-P
-7
-8
10k
100k
(Continued)
C
L
= 51.7pF
C
L
= 43.7pF
C
L
= 37.7pF
C
L
= 26.7pF
C
L
= 16.7pF
C
L
= 4.7pF
-9
10k
1M
FREQUENCY (Hz)
10M
100M
FIGURE 7. GAIN vs FREQUENCY vs SUPPLY VOLTAGE
FIGURE 8. GAIN vs FREQUENCY vs C
L
10
0
-10
-20
CMRR (dB)
-30
-40
-50
-60
-70
-80
-90
100
1k
10k
100k
FREQUENCY (Hz)
V
+
= 2.4V, 5V
R
L
= 1k
C
L
= 16.3pF
A
V
= +1
V
CM
= 1V
P-P
1M
10M
PSRR (dB)
20
0
-20
-40
-60
-80
-100
-120
100
PSRR+
PSRR-
V
+
, V
-
= ±1.2V
R
L
= 1k
C
L
= 16.3pF
A
V
= +1
V
CM
= 1V
P-P
1M
10M
1k
10k
100k
FREQUENCY (Hz)
FIGURE 9. CMRR vs FREQUENCY; V
+
= 2.4V AND 5V
FIGURE 10. PSRR vs FREQUENCY, V
+
, V
-
= ±1.2V
20
INPUT VOLTAGE NOISE (nV/√Hz)
0
-20
PSRR (dB)
-40
-60
-80
-100
-120
100
PSRR+
PSRR-
1k
V
+
= 5V
R
L
= 1k
C
L
= 16.3pF
A
V
= +1
100
V
+
, V
-
= ±2.5V
R
L
= 1k
C
L
= 16.3pF
A
V
= +1
V
CM
= 1V
P-P
1M
10M
10
1
10
100
1k
FREQUENCY (Hz)
10k
100k
1k
10k
100k
FREQUENCY (Hz)
FIGURE 11. PSRR vs FREQUENCYV, V
+
, V
-
= ±2.5V
FIGURE 12. INPUT VOLTAGE NOISE DENSITY vs FREQUENCY
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