1
FN8082.2
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
FGA is a trademark of Intersil Corporation. Copyright Intersil Americas Inc. 2004. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
ISL60002
Precision 1.25V & 2.50V Low Voltage
FGATM References
The ISL60002 FGATM voltage references are very high
precision analog voltage references fabricated in Intersil's
proprietary Floating Gate Analog technology and feature low
(2.7V to 5.5V) supply voltage operation at ultra-low 400nA
operating current.
Additional features include guaranteed absolute initial
accuracy as low as 1.0mV, 20ppm/C temperature
coefficient and long-term stability of 10ppm/
1,000Hrs. The
initial accuracy and thermal stability performance of the
ISL60002 family plus the low supply voltage and 400nA
power consumption eliminates the need to compromise
thermal stability for reduced power consumption making it an
ideal companion to high resolution, low power data
conversion systems.
Features
Reference Voltage . . . . . . . . . . . . . . . . . . . 1.25V, & 2.50V
Absolute Initial Accuracy Options
. . . . . . . . . . . . . . . . . . . . . . . . 1.0mV, 2.5mV, & 5.0mV
Supply Voltage Range . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
Ultra-Low Supply Current. . . . . . . . . . . . . . . . . . 400nA typ
Low 20ppm/C Temperature Coefficient
10ppm/
1,000Hrs. Long Term Stability
7mA Source & Sink Current
ESD Protection. . . . . . . . . . . . . 5kV (Human Body Model)
Standard 8 Ld SOIC & 3 Ld SOT23 packaging
Temperature Range . . . . . . . . . . . . . . . . . .-40C to +85C
Applications
High Resolution A/Ds & D/As
Digital Meters
Bar Code Scanners
Mobile Communications
PDA's and Notebooks
Battery Management Systems
Medical Systems
Pinouts
ISL60002
(SOT23-3)
TOP VIEW
ISL60002
(SOIC-8)
TOP VIEW
Ordering Information
PART NUMBER
TEMP.
RANGE
(C)
PACKAGE
GRADE
V
OUT
OPTION
ISL60002BIH312
-40 to 85 3 Ld SOT23
1.0mV,
20ppm/C
1.25V
ISL60002BIH325
-40 to 85 3 Ld SOT23
1.0mV,
20ppm/C
2.5V
ISL60002BIB812
-40 to 85 8 Ld SOIC
1.0mV,
20ppm/C
1.25V
ISL60002BIB825
-40 to 85 8 Ld SOIC
1.0mV,
20ppm/C
2.5V
ISL60002CIH312
-40 to 85 3 Ld SOT23
2.5mV,
20ppm/C
1.25V
ISL60002CIH325
-40 to 85 3 Ld SOT23
2.5mV,
20ppm/C
2.5V
ISL60002DIH312
-40 to 85 3 Ld SOT23
5.0mV,
20ppm/C
1.25V
ISL60002DIH325
-40 to 85 3 Ld SOT23
5.0mV,
20ppm/C
2.5V
ISL60002CIB812
-40 to 85 8 Ld SOIC
2.5mV,
20ppm/C
1.25V
ISL60002CIB825
-40 to 85 8 Ld SOIC
2.5mV,
20ppm/C
2.5V
ISL60002DIB812
-40 to 85 8 Ld SOIC
5.0mV,
20ppm/C
1.25V
ISL60002DIB825
-40 to 85 8 Ld SOIC
5.0mV,
20ppm/C
2.5V
1
2
3
V
OUT
GND
V
IN
1
2
3
4
8
7
6
5
V
IN
DNC
GND
DNC
DNC
V
OUT
DNC
GND
Data Sheet
September 17, 2004
2
Typical Application
V
IN
= +3.0V
0.1F
0.001F
(
*
)
Serial
Bus
V
IN
V
OUT
GND
ISL60002
ENABLE
SCK
SDAT
A/D CONVERTER
16 TO 24-BIT
REF IN
10F
(
*
)
Also see Figure 3 in Applications Information
Pin Descriptions
PIN NAME
DESCRIPTION
GND
Ground Connection
V
IN
Power Supply Input Connection
V
OUT
Voltage Reference Output Connection
DNC
Do Not Connect; Internal Connection Must Be Left Floating
ISL60002
3
Absolute Maximum Ratings
Recommended Operating Conditions
Storage Temperature Range . . . . . . . . . . . . . . . . . -65C to + 125C
Max Voltage V
IN
to Gnd. . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6.5V
Max Voltage V
OUT
to Gnd
(*)
:
ISL60002, V
OUT
= 1.25V. . . . . . . . . . . . . . . . . . . . . -0.5V to +2.25V
ISL60002, V
OUT
= 2.50V. . . . . . . . . . . . . . . . . . . . . -0.5V to +3.50V
Voltage on "DNC" pins . . . . No connections permitted to these pins.
Lead Temperature, soldering
(*)
. . . . . . . . . . . . . . . . . . . . . . . +225C
(*) note: maximum duration = 10 seconds
Temperature Range (Industrial) . . . . . . . . . . . . . . . . . . -40C to 85C
ESD Ratings
Body test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5kV
CAUTION: Absolute Maximum Ratings are limits which may result in impaired reliability and/or permanent damage to the device. These are stress ratings provided for
information only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification are not
implied.
For guaranteed specifications and test conditions, see Electrical Characteristics.
The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed
test conditions.
Electrical Specifications ISL60002, V
OUT
= 1.25V
Operating Conditions: V
IN
= 3.0V, I
OUT
= 0mA, C
OUT
= 0.001F, T
A
= -40 to
+85C, unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OUT
Output Voltage
1.250
V
V
OA
V
OUT
Accuracy
T
A
= 25C
ISL60002B12
-1.0
+1.0
mV
ISL60002C12
-2.5
+2.5
mV
ISL60002D12
-5.0
+5.0
mV
TC V
OUT
Output Voltage
Temperature Coefficient
(Note 1)
20
ppm/C
V
IN
Input Voltage Range
2.7
5.5
V
I
IN
Supply Current
400
900
nA
V
OUT
/
V
IN
Line Regulation
+2.7V
V
IN
+5.5V
100
250
V/V
V
OUT
/
I
OUT
Load Regulation
Sourcing: 0mA
I
OUT
7mA
25
60
V/mA
Sinking: -7mA
I
OUT
0mA
25
60
V/mA
V
OUT
/
t
Long Term Stability (Note 4)
T
A
= 25C
10
ppm
1kHrs
V
OUT
/
T
A
Thermal Hysteresis (Note 2)
T
A
= 125C
100
ppm
I
SC
Short Circuit Current (Note 3)
T
A
= 25C, V
OUT
tied to Gnd
50
80
mA
V
N
Output Voltage Noise
0.1Hz
f 10Hz
30
V
p-p
NOTES:
1. Over the specified temperature range. Temperature coefficient is measured by the box method whereby the change in V
OUT
is divided by the
temperature range; in this case, -40C to +85C = 125C.
2. Thermal Hysteresis is the change in V
OUT
measured @ T
A
= 25C after temperature cycling over a specified range,
T
A
. V
OUT
is read initially
at T
A
= 25C for the device under test. The device is temperature cycled and a second V
OUT
measurement is taken at 25C. The difference
between the initial V
OUT
reading and the second V
OUT
reading is then expressed in ppm. For
T
A
= 125C, the device under is cycled from
+25C to +85C to -40C to +25C.
3. Guaranteed by device characterization and/or correlation to other device tests.
4. FGATM voltage reference long term drift is a logarithmic characteristic. Changes that occur after the first few hundred hours of operation are
significantly smaller with time, asymptotically approaching zero beyond 2000 hours. Because of this decreasing characteristic, long-term drift is
specified in ppm/
1kHr.
ISL60002
4
Electrical Specifications: ISL60002, V
OUT
= 2.50V
Operating Conditions: V
IN
= 3.0V, I
OUT
= 0mA, C
OUT
= 0.001F, T
A
= -40 to
+85C, unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OUT
Output Voltage
2.500
V
V
OA
V
OUT
Accuracy @
T
A
= 25C
ISL60002B25
-1.0
+1.0
mV
ISL60002C25
-2.5
+2.5
mV
ISL60002D25
-5.0
+5.0
mV
TC V
OUT
Output Voltage
Temperature Coefficient
(Note 1)
20
ppm/C
V
IN
Input Voltage Range
2.7
5.5
V
I
IN
Supply Current
400
900
nA
V
OUT
/
V
IN
Line Regulation
+2.7V
V
IN
+5.5V
100
250
V/V
V
OUT
/
I
OUT
Load Regulation
Sourcing: 0mA
I
OUT
7mA
25
60
V/mA
Sinking: -7mA
I
OUT
0mA
25
60
V/mA
V
OUT
/
t
Long Term Stability (Note 4)
T
A
= 25C
10
ppm
1kHrs
V
OUT
/
T
A
Thermal Hysteresis (Note 2)
T
A
= 125C
100
ppm
I
SC
Short Circuit Current (Note 3)
T
A
= 25C, V
OUT
tied to Gnd
50
80
mA
V
N
Output Voltage Noise
0.1Hz
f 10Hz
30
V
p-p
NOTES:
1. Over the specified temperature range. Temperature coefficient is measured by the box method whereby the change in V
OUT
is divided by the
temperature range; in this case, -40C to +85C = 125C.
2. Thermal Hysteresis is the change in V
OUT
measured @ T
A
= 25C after temperature cycling over a specified range,
T
A
. V
OUT
is read initially
at T
A
= 25C for the device under test. The device is temperature cycled and a second V
OUT
measurement is taken at 25C. The difference
between the initial V
OUT
reading and the second V
OUT
reading is then expressed in ppm. For
T
A
= 125C, the device under is cycled from
+25C to +85C to -40C to +25C.
3. Guaranteed by device characterization and/or correlation to other device tests.
4. FGATM voltage reference long term drift is a logarithmic characteristic. Changes that occur after the first few hundred hours of operation are
significantly smaller with time, asymptotically approaching zero beyond 2000 hours. Because of this decreasing characteristic, long-term drift is
specified in ppm/
1kHr.
ISL60002
5
Typical Performance Characteristic Curves: ISL60002, V
OUT
= 1.25V
(V
IN
= 3.0V, I
OUT
= 0mA, T
A
= 25C unless otherwise specified)
200
250
300
350
400
450
500
550
600
650
700
2.5
3.0
3.5
4.0
4.5
5.0
5.5
300
320
340
360
380
400
420
440
460
2.5
3.0
3.5
4.0
4.5
5.0
5.5
+85
C
+25
C
40
C
1.249
1.2492
1.2494
1.2496
1.2498
1.25
1.2502
1.2504
1.2506
1.2508
1.251
-40
-15
10
35
60
85
Unit 2
1.2499
1.24995
1.25
1.25005
1.2501
1.25015
1.2502
1.25025
1.2503
2.5
3
3.5
4
4.5
5
5.5
-25
-10
5
20
35
50
2.5
3
3.5
4
4.5
5
5.5
I
(3 Representative Units)
(3 Representative Units)
IN
vs V
IN
V
IN
(V)
V
IN
(V)
V
IN
(V)
I
N
(nA)
V
OUT
(V)
V
OUT
(V)
(normalized to 1.25V at V
IN
= 3V)
Delta V
OUT
(
V)
(normalized to V
IN
= 3.0V)
V
OUT
vs TEMPERATURE
Normalized to 25
C
TEMPERATURE (
C)
LINE REGULATION
(3 Representative Units)
LINE REGULATION
I
IN
vs V
IN
V
IN
(V)
I
N
(nA)
Unit 1
Unit 1
Unit 1
Unit 2
Unit 3
Unit 3
Unit 2
+25
C
+85
C
-40
C
Unit 3
ISL60002
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