DATASHEET
ISL28006
Micropower, Rail to Rail Input Current Sense Amplifier with Voltage Output
The ISL28006 is a micropower, uni-directional high-side and
low-side current sense amplifier featuring a proprietary
rail-to-rail input current sensing amplifier. The ISL28006 is
ideal for high-side current sense applications where the sense
voltage is usually much higher than the amplifier supply
voltage. The device can be used to sense voltages as high as
28V when operating from a supply voltage as low as 2.7V. The
micropower ISL28006 consumes only 50µA of supply current
when operating from a 2.7V to 28V supply.
The ISL28006 features a common-mode input voltage range
from 0V to 28V. The proprietary architecture extends the input
voltage sensing range down to 0V, making it an excellent
choice for low-side ground sensing applications. The benefit of
this architecture is that a high degree of total output accuracy
is maintained over the entire 0V to 28V common mode input
voltage range.
The ISL28006 is available in fixed (100V/V, 50V/V, 20V/V and
Adjustable) gains in the space saving 5 Ld SOT-23 package
and the 6 Ld SOT-23 package for the adjustable gain part. The
parts operate over the extended temperature range from
-40°C to +125°C.
FN6548
Rev 6.00
November 22, 2013
Features
• Low Power Consumption. . . . . . . . . . . . . . . . . . . . . . 50µA, Typ
• Supply Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.7V to 28V
• Wide Common Mode Input. . . . . . . . . . . . . . . . . . . . 0V to 28V
• Gain Versions
- ISL28006-100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100V/V
- ISL28006-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50V/V
- ISL28006-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V/V
- ISL28006-ADJ . . . . . . . . . . . . . . . . ADJ (Min Gain = 20V/V)
• Operating Temperature Range . . . . . . . . . . . . -40°C to +125°C
• Packages. . . . . . . . . . . . . . . . . . . . . .5 Ld SOT-23, 6 Ld SOT-23
Applications
• Power Management/Monitors
• Power Distribution and Safety
• DC/DC, AC/DC Converters
• Battery Management/Charging
• Automotive Power Distribution
Related Literature
• See
AN1532
for “ISL28006 Evaluation Board User’s Guide”
SENSE
+12VDC
R
SENSE
+12VDC
OUTPUT
+5VDC
-
ISL28006
+
I
SENSE
+12VDC
+5VDC
OUTPUT
-
+5VDC
I
SENSE
+5VDC
+1.0VDC
OUTPUT
I
SENSE
+1.0VDC
ACCURACY (%)
ISL28006
+
SENSE
+1.0VDC
MULTIPLE
OUTPUT
POWER SUPPLY
GND
R
SENSE
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
-1.2
-1.4
0
2
4
6
8
10 12 14 16 18 20 22 24 26 28
+100°C
-40°C
+25°C
+125°C
GAIN 100
SENSE
+5VDC
R
SENSE
+5VDC
-
ISL28006
+
V
RS+
(V)
FIGURE 1. TYPICAL APPLICATION
FIGURE 2. GAIN ACCURACY vs V
RS+
= 0V TO 28V
FN6548 Rev 6.00
November 22, 2013
Page 1 of 26
ISL28006
Block Diagram
I = 2.86µA
V
SENSE
R
S+
R
1
R
S-
R
2
+
1.35V
V
CC
I
MIRROR
R
3
gm
LO
R
5
V
SENSE
R
4
GND
R
4
GND
R
g
R
3
-
OUT
R
f
gm
HI
HIGH-SIDE
AND
LOW-SIDE
SENSING
R
S+
R
1
R
S-
R
2
+
1.35V
V
CC
I
MIRROR
gm
LO
R
5
V
SENSE
-
OUT
R
f
F
B
R
g
gm
HI
V
CC
I = 2.86µA
V
SENSE
HIGH-SIDE
AND
LOW-SIDE
SENSING
V
CC
FIXED GAIN PARTS
ADJUSTABLE GAIN PART
Pin Configurations
ISL28006-100, 50, 20
(5 LD SOT-23)
TOP VIEW
GND 1
OUT 2
V
CC
3
FIXED
GAIN
4 R
S+
5 R
S-
FB 1
OUT 2
V
CC
3
ADJ.
GAIN
ISL28006-ADJ
(6 LD SOT-23)
TOP VIEW
6 GND
5 R
S-
4 R
S+
Pin Descriptions
ISL28006-100, 50, 20
(5 LD SOT-23)
1
2
3
4
5
ISL28006-ADJ
(6 LD SOT-23)
6
1
2
3
4
5
FB
V
CC
R
S-
PIN NAME
GND
FB
OUT
V
CC
R
S+
R
S-
Power Ground
DESCRIPTION
Input Pin for External Resistors
Amplifier Output
Positive Power Supply
Sense Voltage Non-inverting Input
Sense Voltage Inverting Input
CAPACITIVELY
COUPLED
ESD CLAMP
OUT
R
S+
GND
FN6548 Rev 6.00
November 22, 2013
Page 2 of 26
ISL28006
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
ISL28006FH100Z-T7
ISL28006FH100Z-T7A
ISL28006FH50Z-T7
ISL28006FH50Z-T7A
ISL28006FH20Z-T7
ISL28006FH20Z-T7A
ISL28006FHADJZ-T7
ISL28006FHADJZ-T7A
ISL28006FH-100EVAL1Z
ISL28006FH-50EVAL1Z
ISL28006FH-20EVAL1Z
ISL28006FH-ADJEVAL1Z
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. For Moisture Sensitivity Level (MSL), please see device information page for
ISL28006.
For more information on MSL please see techbrief
TB363.
4. The part marking is located on the bottom of the part.
GAIN
100V/V
100V/V
50V/V
50V/V
20V/V
20V/V
ADJ
ADJ
PART
MARKING
BDJA (Note 4)
BDJA (Note 4)
BDHA (Note 4)
BDHA (Note 4)
BDGA (Note 4)
BDGA (Note 4)
BDFA (Note 4)
BDFA (Note 4)
PACKAGE
Tape & Reel
(Pb-Free)
5 Ld SOT-23
5 Ld SOT-23
5 Ld SOT-23
5 Ld SOT-23
5 Ld SOT-23
5 Ld SOT-23
6 Ld SOT-23
6 Ld SOT-23
PKG.
DWG. #
P5.064A
P5.064A
P5.064A
P5.064A
P5.064A
P5.064A
P6.064
P6.064
100V/V Evaluation Board
50V/V Evaluation Board
20V/V Evaluation Board
Adjustable Evaluation Board
FN6548 Rev 6.00
November 22, 2013
Page 3 of 26
ISL28006
Absolute Maximum Ratings
Max Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28V
Max Differential Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA
Max Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.5V
Max Input Voltage (R
S+
, R
S-
, FB) . . . . . . . . . . . . . . . . . . . GND - 0.5V to 30V
Max Input Current for Input Voltage <GND - 0.5V. . . . . . . . . . . . . . . . ±20mA
Output Short-Circuit Duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Indefinite
Di-Electrically Isolated PR40 Process . . . . . . . . . . . . . . . . . . . Latch-up free
ESD Rating
Human Body Model (Tested per JESD22-A114F) . . . . . . . . . . . . . . . . 4kV
Machine Model (Tested per EIA/JESD22-A115-A) . . . . . . . . . . . . . . 200V
Charged Device Model (Tested per JESD22-C101D) . . . . . . . . . . . . . .1.5kV
Thermal Information
Thermal Resistance (Typical)
JA
(°C/W)
JC
(°C/W)
5 Ld SOT-23 (Notes 5, 6) . . . . . . . . . . . . . . .
190
90
6 Ld SOT-23 (Notes 5, 6) . . . . . . . . . . . . . . .
180
90
Maximum Storage Temperature Range . . . . . . . . . . . . . .-65°C to +150°C
Maximum Junction Temperature (T
JMAX
) . . . . . . . . . . . . . . . . . . . . .+150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Recommended Operating Conditions
Ambient Temperature Range (T
A
) . . . . . . . . . . . . . . . . . . .-40°C to +125°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:
5.
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
JC
, the “case temp” location is taken at the package top center.
V
CC
= 12V, V
RS+
= 0V to 28V, V
SENSE
= 0V, R
LOAD
= 1MΩ, 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.
PARAMETER
V
OS
(Input Offset
Voltage)
DESCRIPTION
Gain = 100
(Notes 8, 9)
CONDITIONS
V
CC
= V
RS
+ = 12V, V
SENSE
= 20mV to 100mV
V
CC
= 12V, V
RS
+ = 0.2V, V
SENSE
= 20mV to 100mV
Gain = 50, Gain = 20
(Notes 8, 9)
V
CC
= V
RS
+ = 12V, V
SENSE
= 20mV to 100mV
V
CC
= 12V, V
RS
+ = 0.2V, V
SENSE
= 20mV to 100mV
Adjustable, Gain = 21
R
f
= 100kΩ, R
g
= 5kΩ
(Notes 8, 9)
V
CC
= V
RS
+ = 12V, V
SENSE
= 20mV to 100mV
V
CC
= 12V, V
RS
+ = 0.2V, V
SENSE
= 20mV to 100mV
I
RS
+, I
RS
-
I
RS
+
(+ Input Bias
Current)
Leakage Current
V
CC
= 0V, V
RS+
= 28V
V
RS
+ = 2V, V
SENSE
= 5mV
V
RS
+ = 0V, V
SENSE
= 5mV
Gain = 50, Gain = 20
V
RS
+ = 2V, V
SENSE
= 5mV
V
RS
+ = 0V, V
SENSE
= 5mV
ADJ Gain = 101
R
f
= 100kΩ, R
g
= 1kΩ
V
RS
+ = 2V, V
SENSE
= 5mV
V
RS
+ = 0V, V
SENSE
= 5mV
-500
-600
-700
-840
4.7
6
7
-432
-500
-600
4.7
6
8
-432
MIN
(Note 7)
-250
-300
-2.5
-2.8
-300
-450
-2.8
-3.2
-300
-450
-3.1
-3.4
0.041
-1.2
60
-1.2
60
-1.2
TYP
60
MAX
(Note 7)
250
300
2.5
2.8
300
450
2.8
3.2
300
450
3.1
3.4
1.2
1.5
Gain = 100
4.7
6
7
-432
UNIT
µV
µV
mV
mV
µV
µV
mV
mV
µV
µV
mV
mV
µA
µA
µA
µA
nA
nA
µA
µA
nA
nA
µA
µA
nA
nA
Electrical Specifications
FN6548 Rev 6.00
November 22, 2013
Page 4 of 26
ISL28006
V
CC
= 12V, V
RS+
= 0V to 28V, V
SENSE
= 0V, R
LOAD
= 1MΩ, 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)
PARAMETER
I
RS
-
(- Input Bias
Current)
DESCRIPTION
G = 100, 50, 20, ADJ
CONDITIONS
V
RS
+ = 2V, V
SENSE
= 5mV
V
RS
+ = 0V, V
SENSE
= 5mV
CMRR
PSRR
V
FS
G
(Gain)
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Full-scale Sense Voltage
(Note 8)
V
RS
+ = 2V to 28V
V
CC
= 2.7V to 28V, V
RS
+ = 2V
V
CC
= 28V, V
RS
+ = 0.2V, 12V
ISL28006-100
ISL28006-50
ISL28006-20
ISL28006-ADJ
G
A
(Gain Accuracy)
Gain = 100
(Note 10)
V
CC
= V
RS
+ = 12V, V
SENSE
= 20mV to 100mV
V
CC
= 12V, V
RS
+ = 0.1V, V
SENSE
= 20mV to 100mV
Gain = 50, Gain = 20
(Note 10)
V
CC
= V
RS
+ = 12V, V
SENSE
= 20mV to 100mV
V
CC
= 12V, V
RS
+ = 0.1V, V
SENSE
= 20mV to 100mV
ADJ Gain = 21
R
f
= 100kΩ, R
g
= 5kΩ
(Note 10)
V
CC
= V
RS
+ = 12V, V
SENSE
= 20mV to 100mV
V
CC
= 12V, V
RS
+ = 0.1V, V
SENSE
= 20mV to 100mV
V
OA
(Total Output
Accuracy)
Gain = 100
(Note 11)
V
CC
= V
RS
+ = 12V, V
SENSE
= 100mV
V
CC
= 12V, V
RS
+ = 0.1V, V
SENSE
= 100mV
Gain = 50, Gain = 20
(Note 11)
V
CC
= V
RS
+ = 12V, V
SENSE
= 100mV
V
CC
= 12V, V
RS
+ = 0.1V, V
SENSE
= 100mV
ADJ Gain = 21
R
f
= 100kΩ, R
g
= 5kΩ
(Note 11)
V
CC
= V
RS
+ = 12V, V
SENSE
= 100mV
V
CC
= 12V, V
RS
+ = 0.1V, V
SENSE
= 100mV
V
OH
V
OL
R
OUT
I
SC+
I
SC-
Output Voltage Swing, High
V
CC
- V
OUT
Output Voltage Swing, Low
V
OUT
Output Resistance
Short Circuit Sourcing Current
Short Circuit Sinking Current
I
O
= -500µA, V
CC
= 2.7V, V
SENSE
= 100mV, V
RS
+ = 2V
I
O
= 500µA, V
CC
= 2.7V, V
SENSE
= 0V, V
RS
+ = 2V
V
CC
= V
RS
+ = 12V, V
SENSE
= 100mV,
I
OUT
= 10µA to 1mA
V
CC
= V
RS
+ = 5V, R
L
= 10Ω
V
CC
= V
RS
+ = 5V, R
L
= 10Ω
-0.7
-0.9
-4.7
-5.2
-0.7
-0.9
-4.7
-5.2
39
30
6.5
4.8
8.7
-1.41
-1.41
-0.35
-1
-2.2
-2.3
-0.65
-1
-2.2
-2.3
-0.7
-0.9
-1.25
0.7
0.9
1.8
2.3
1.05
1.2
1.8
2.3
50
50
-0.33
-0.33
20
-0.2
-1
-0.25
0.7
1
2.2
2.3
1
1.05
2.2
2.3
0.7
0.9
%
%
%
%
%
%
%
%
%
%
%
mV
mV
mA
mA
0.7
1
-125
-130
105
90
200
100
50
20
115
105
MIN
(Note 7)
TYP
5
MAX
(Note 7)
50
75
-45
UNIT
nA
nA
nA
nA
dB
dB
mV
V/V
V/V
V/V
V/V
%
%
%
%
%
%
%
%
%
%
Electrical Specifications
FN6548 Rev 6.00
November 22, 2013
Page 5 of 26
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