ISL21080 Datasheet

300nA NanoPower Voltage References
ISL21080
Features
The ISL21080 analog voltage references feature low supply
voltage operation at ultra-low 310nA typ, 1.5µA max operating
current. Additionally, the ISL21080 family features guaranteed
initial accuracy as low as ±0.2% and 50ppm/°C temperature
coefficient.
• Reference output voltage . . . . . . . . 0.900V, 1.024V, 1.250V,
1.500V, 2.048V, 2.500V, 3.000V, 3.300V, 4.096V, 5.000V
• Initial accuracy:
-
These references are ideal for general purpose portable
applications to extend battery life at lower cost. The ISL21080 is
provided in the industry standard 3 Ld SOT-23 pinout.
The ISL21080 output voltages can be used as precision voltage
sources for voltage monitors, control loops, standby voltages for
low power states for DSP, FPGA, Datapath Controllers,
microcontrollers and other core voltages: 0.9V, 1.024V, 1.25V,
1.5V, 2.048V, 2.5V, 3.0V, 3.3V, 4.096V and 5.0V.
ISL21080-09 and -10 . . . . . . . . . . . . . . . . . . . . . . . . .
ISL21080-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ISL21080-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ISL21080-20 and -25 . . . . . . . . . . . . . . . . . . . . . . . . .
ISL21080-30, -33, -41, and -50 . . . . . . . . . . . . . . . . .
±0.7%
±0.6%
±0.5%
±0.3%
±0.2%
• Input voltage range:
- ISL21080-09. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0V to 5.5V
- ISL21080-10, -12, -15, -20 and -25. . . . . . . . . 2.7V to 5.5V
- ISL21080-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2V to 5.5V
- ISL21080-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5V to 5.5V
- ISL21080-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5V to 8.0V
- ISL21080-50. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V to 8.0V
Special Note: Post-assembly x-ray inspection may lead to permanent
changes in device output voltage and should be minimized or avoided.
For further information, please see “Applications Information” on
page 14 and AN1533, “X-Ray Effects on Intersil FGA References”.
Applications
• Output voltage noise . . . . . . . . . . . . .30µVP-P (0.1Hz to 10Hz)
• Energy harvesting applications
• Supply current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5µA (max)
• Wireless sensor network applications
• Tempco . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50ppm/°C
• Low power voltage sources for controllers, FPGA, ASICs or logic
devices
• Output current capability. . . . . . . . . . . . . . . . . . . . . . . . . ±7mA
• Battery management/monitoring
• Operating temperature range. . . . . . . . . . . . . -40°C to +85°C
• Low power standby voltages
• Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Ld SOT-23
• Portable Instrumentation
• Pb-Free (RoHS compliant)
• Consumer/medical electronics
Related Literature
• Wearable electronics
• Lower cost industrial and instrumentation
• Power regulation circuits
• See AN1494, “Reflow and PC Board Assembly Effects on
Intersil FGA References”
• Control loops and compensation networks
• See AN1533, “X-Ray Effects on Intersil FGA References”
• LED/diode supply
• See AN1761, “ISL21080XXEV1Z User’s Guide”
500
UNIT 1
400
UNIT 2
IN (nA)
300
UNIT 3
200
100
0
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
VIN (V)
FIGURE 1. IIN vs VIN, 3 UNITS
June 23, 2014
FN6934.5
1
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 2009, 2010, 2014. 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.
ISL21080
Pin Configuration
Pin Descriptions
ISL21080
(3 LD SOT-23)
TOP VIEW
VIN 1
3
GND
PIN NUMBER
PIN NAME
DESCRIPTION
1
VIN
Input Voltage Connection.
2
VOUT
Voltage Reference Output
3
GND
Ground Connection
VOUT 2
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
PART
MARKING
(Note 4)
VOUT OPTION
(V)
GRADE
(%)
TEMP. RANGE
(°C)
PACKAGE
Tape & Reel
(Pb-Free)
PKG.
DWG. #
ISL21080DIH309Z-TK
BCLA
0.9
±0.7
-40 to +85
3 Ld SOT-23
P3.064
ISL21080DIH310Z-TK
BCMA
1.024
±0.7
-40 to +85
3 Ld SOT-23
P3.064
ISL21080DIH312Z-TK
BCNA
1.25
±0.6
-40 to +85
3 Ld SOT-23
P3.064
ISL21080CIH315Z-TK
BCDA
1.5
±0.5
-40 to +85
3 Ld SOT-23
P3.064
ISL21080CIH320Z-TK
BCPA
2.048
±0.3
-40 to +85
3 Ld SOT-23
P3.064
ISL21080CIH325Z-TK
BCRA
2.5
±0.3
-40 to +85
3 Ld SOT-23
P3.064
ISL21080CIH330Z-TK
BCSA
3.0
±0.2
-40 to +85
3 Ld SOT-23
P3.064
ISL21080CIH333Z-TK
BCTA
3.3
±0.2
-40 to +85
3 Ld SOT-23
P3.064
ISL21080CIH341Z-TK
BCVA
4.096
±0.2
-40 to +85
3 Ld SOT-23
P3.064
ISL21080CIH350Z-TK
BCWA
5.0
±0.2
-40 to +85
3 Ld SOT-23
P3.064
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 ISL21080. For more information on MSL please see techbrief TB363.
4. The part marking is located on the bottom of the part.
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ISL21080
Absolute Maximum Ratings
Thermal Information
Max Voltage
VIN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6.5V
VIN to GND (ISL21080-41 and 50 only) . . . . . . . . . . . . . . . -0.5V to +10V
VOUT to GND (10s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VOUT +1V
VOUT to GND (10s)
ISL21080-41 and 50 only . . . . . . . . . . . . . . . . . . . . . . -0.5V to +5.1V
ESD Ratings
Human Body Model (Tested to JESD22-A114) . . . . . . . . . . . . . . . . . . 5kV
Machine Model (Tested to JESD22-A115) . . . . . . . . . . . . . . . . . . . . . 500V
Charged Device Model (Tested to JESD22-C101) . . . . . . . . . . . . . . . . 2kV
Latch Up (Tested per JESD-78B; Class 2, Level A) . . . . . . . . . . . . . . 100mA
Thermal Resistance (Typical)
JA (°C/W)
JC (°C/W)
3 Lead SOT-23 (Notes 6, 7) . . . . . . . . . . . . . .
275
110
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . .+107°C
Continuous Power Dissipation (TA = +85°C) . . . . . . . . . . . . . . . . . . . 99mW
Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493
Recommended Operating Conditions
Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
Environmental Operating Conditions
X-Ray Exposure (Note 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mRem
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. Measured with no filtering, distance of 10” from source, intensity set to 55kV and 70mA current, 30s duration. Other exposure levels should be
analyzed for Output Voltage drift effects. See “Applications Information” on page 14.
6. JA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
7. For JC, the “case temp” location is taken at the package top center.
8. Post-reflow drift for the ISL21080 devices will range from 100µV to 1.0mV based on experimental results with devices on FR4 double sided boards.
The design engineer must take this into account when considering the reference voltage after assembly.
9. Post-assembly x-ray inspection may also lead to permanent changes in device output voltage and should be minimized or avoided. Initial accuracy
can change 10mV or more under extreme radiation. Most inspection equipment will not affect the FGA reference voltage, but if x-ray inspection is
required, it is advisable to monitor the reference output voltage to verify excessive shift has not occurred.
Electrical Specifications (ISL21080-09, VOUT = 0.9V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER
DESCRIPTION
VOUT
Output Voltage
VOA
VOUT Accuracy @ TA = +25°C (Notes 8, 9)
TC VOUT
Output Voltage Temperature Coefficient
(Note 10)
VIN
Input Voltage Range
IIN
Supply Current
VOUT /VIN
Line Regulation
VOUT/IOUT
Load Regulation
CONDITIONS
MIN
(Note 13)
TYP
MAX
(Note 13)
0.9
-0.7
UNIT
V
+0.7
%
50
ppm/°C
5.5
V
0.35
1.5
µA
2V < VIN < 5.5V
30
350
µV/V
Sourcing: 0mA  IOUT  10mA
6
100
µV/mA
Sinking: -10mA  IOUT 0mA
23
350
µV/mA
2.0
ISC
Short Circuit Current
TA = +25°C, VOUT tied to GND
30
mA
tR
Turn-on Settling Time
VOUT = ±0.1% with no load
1
ms
Ripple Rejection
f = 120Hz
-40
dB
eN
Output Voltage Noise
0.1Hz  f 10Hz
40
µVP-P
VN
Broadband Voltage Noise
10Hz  f 1kHz
10
µVRMS
Noise Density
f = 1kHz
1.1
µV/Hz
VOUT/TA
Thermal Hysteresis (Note 11)
TA = +125°C
100
ppm
VOUT/t
Long Term Stability (Note 12)
TA = +25°C
60
ppm
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ISL21080
Electrical Specifications
(ISL21080-10, VOUT = 1.024V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER
DESCRIPTION
VOUT
Output Voltage
VOA
VOUT Accuracy @ TA = +25°C (Notes 8, 9)
TC VOUT
Output Voltage Temperature Coefficient
(Note 10)
VIN
Input Voltage Range
CONDITIONS
MIN
(Note 13)
TYP
MAX
(Note 13)
1.024
-0.7
2.7
UNIT
V
+0.7
%
50
ppm/°C
5.5
V
IIN
Supply Current
0.31
1.5
µA
VOUT /VIN
Line Regulation
2.7V < VIN < 5.5V
80
350
µV/V
VOUT/IOUT
Load Regulation
Sourcing: 0mA  IOUT  7mA
25
100
µV/mA
Sinking: -7mA  IOUT 0mA
50
350
µV/mA
ISC
Short Circuit Current
TA = +25°C, VOUT tied to GND
50
mA
tR
Turn-on Settling Time
VOUT = ±0.1% with no load
4
ms
Ripple Rejection
f = 120Hz
-40
dB
eN
Output Voltage Noise
0.1Hz  f 10Hz
30
µVP-P
VN
Broadband Voltage Noise
10Hz  f 1kHz
52
µVRMS
Noise Density
f = 1kHz
2.2
µV/Hz
VOUT/TA
Thermal Hysteresis (Note 11)
TA = +165°C
100
ppm
VOUT/t
Long Term Stability (Note 12)
TA = +25°C
50
ppm
Electrical Specifications
(ISL21080-12, VOUT = 1.25V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER
DESCRIPTION
VOUT
Output Voltage
VOA
VOUT Accuracy @ TA = +25°C (Notes 8, 9)
TC VOUT
Output Voltage Temperature Coefficient
(Note 10)
VIN
Input Voltage Range
IIN
Supply Current
VOUT /VIN
Line Regulation
VOUT/IOUT
Load Regulation
CONDITIONS
MIN
(Note 13)
TYP
MAX
(Note 13)
1.25
-0.6
UNIT
V
+0.6
%
50
ppm/°C
5.5
V
0.31
1.5
µA
2.7V < VIN < 5.5V
80
350
µV/V
Sourcing: 0mA  IOUT  7mA
25
100
µV/mA
Sinking: -7mA  IOUT 0mA
50
350
µV/mA
2.7
ISC
Short Circuit Current
TA = +25°C, VOUT tied to GND
50
mA
tR
Turn-on Settling Time
VOUT = ±0.1% with no load
4
ms
Ripple Rejection
f = 120Hz
-40
dB
eN
Output Voltage Noise
0.1Hz  f 10Hz
30
µVP-P
VN
Broadband Voltage Noise
10Hz  f 1kHz
52
µVRMS
Noise Density
f = 1kHz
1.1
µV/Hz
VOUT/TA
Thermal Hysteresis (Note 11)
TA = +165°C
100
ppm
VOUT/t
Long Term Stability (Note 12)
TA = +25°C
50
ppm
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ISL21080
Electrical Specifications
(ISL21080-15, VOUT = 1.5V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER
DESCRIPTION
VOUT
Output Voltage
VOA
VOUT Accuracy @ TA = +25°C (Notes 8, 9)
TC VOUT
Output Voltage Temperature Coefficient
(Note 10)
VIN
Input Voltage Range
CONDITIONS
MIN
(Note 13)
TYP
MAX
(Note 13)
1.5
-0.5
2.7
UNIT
V
+0.5
%
50
ppm/°C
5.5
V
IIN
Supply Current
0.31
1.5
µA
VOUT /VIN
Line Regulation
2.7V < VIN < 5.5V
80
350
µV/V
VOUT/IOUT
Load Regulation
Sourcing: 0mA  IOUT  7mA
10
100
µV/mA
Sinking: -7mA  IOUT 0mA
50
350
µV/mA
ISC
Short Circuit Current
TA = +25°C, VOUT tied to GND
50
mA
tR
Turn-on Settling Time
VOUT = ±0.1% with no load
4
ms
Ripple Rejection
f = 120Hz
-40
dB
eN
Output Voltage Noise
0.1Hz  f 10Hz
30
µVP-P
VN
Broadband Voltage Noise
10Hz  f 1kHz
52
µVRMS
Noise Density
f = 1kHz
1.1
µV/Hz
VOUT/TA
Thermal Hysteresis (Note 11)
TA = +165°C
100
ppm
VOUT/t
Long Term Stability (Note 12)
TA = +25°C
50
ppm
Electrical Specifications
d
(ISL21080-20, VOUT = 2.048V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER
DESCRIPTION
VOUT
Output Voltage
VOA
VOUT Accuracy @ TA = +25°C (Notes 8, 9)
TC VOUT
Output Voltage Temperature Coefficient
(Note 10)
VIN
Input Voltage Range
IIN
Supply Current
VOUT /VIN
Line Regulation
VOUT/IOUT
Load Regulation
CONDITIONS
MIN
(Note 13)
TYP
MAX
(Note 13)
2.048
-0.3
UNIT
V
+0.3
%
50
ppm/°C
5.5
V
0.31
1.5
µA
2.7V < VIN < 5.5V
80
350
µV/V
Sourcing: 0mA  IOUT  7mA
25
100
µV/mA
Sinking: -7mA  IOUT 0mA
50
350
µV/mA
2.7
ISC
Short Circuit Current
TA = +25°C, VOUT tied to GND
50
mA
tR
Turn-on Settling Time
VOUT = ±0.1% with no load
4
ms
Ripple Rejection
f = 120Hz
-40
dB
eN
Output Voltage Noise
0.1Hz  f 10Hz
30
µVP-P
VN
Broadband Voltage Noise
10Hz  f 1kHz
52
µVRMS
Noise Density
f = 1kHz
1.1
µV/Hz
VOUT/TA
Thermal Hysteresis (Note 11)
TA = +165°C
100
ppm
VOUT/t
Long Term Stability (Note 12)
TA = +25°C
50
ppm
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ISL21080
Electrical Specifications
(ISL21080-25, VOUT = 2.5V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER
DESCRIPTION
CONDITIONS
MIN
(Note 13)
MAX
(Note 13)
UNIT
+0.3
%
50
ppm/°C
5.5
V
0.31
1.5
µA
TYP
VOUT
Output Voltage
VOA
VOUT Accuracy @ TA = +25°C (Notes 8, 9)
TC VOUT
Output Voltage Temperature Coefficient
(Note 10)
VIN
Input Voltage Range
IIN
Supply Current
VOUT /VIN
Line Regulation
2.7V < VIN < 5.5V
80
350
µV/V
VOUT/IOUT
Load Regulation
Sourcing: 0mA  IOUT  7mA
25
100
µV/mA
Sinking: -7mA  IOUT 0mA
50
350
µV/mA
2.5
-0.3
2.7
V
ISC
Short Circuit Current
TA = +25°C, VOUT tied to GND
50
mA
tR
Turn-on Settling Time
VOUT = ±0.1% with no load
4
ms
Ripple Rejection
f = 120Hz
-40
dB
eN
Output Voltage Noise
0.1Hz  f 10Hz
30
µVP-P
VN
Broadband Voltage Noise
10Hz  f 1kHz
52
µVRMS
Noise Density
f = 1kHz
1.1
µV/Hz
VOUT/TA
Thermal Hysteresis (Note 11)
TA = +165°C
100
ppm
VOUT/t
Long Term Stability (Note 12)
TA = +25°C
50
ppm
Electrical Specifications
(ISL21080-30, VOUT = 3.0V) VIN = 5.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER
DESCRIPTION
VOUT
Output Voltage
VOA
VOUT Accuracy @ TA = +25°C (Notes 8, 9)
TC VOUT
Output Voltage Temperature Coefficient
(Note 10)
VIN
Input Voltage Range
IIN
Supply Current
VOUT /VIN
Line Regulation
VOUT/IOUT
Load Regulation
CONDITIONS
MIN
(Note 13)
TYP
MAX
(Note 13)
3.0
-0.2
UNIT
V
+0.2
%
50
ppm/°C
5.5
V
0.31
1.5
µA
3.2V < VIN < 5.5V
80
350
µV/V
Sourcing: 0mA  IOUT  7mA
25
100
µV/mA
Sinking: -7mA  IOUT 0mA
50
350
µV/mA
3.2
ISC
Short Circuit Current
TA = +25°C, VOUT tied to GND
50
mA
tR
Turn-on Settling Time
VOUT = ±0.1% with no load
4
ms
Ripple Rejection
f = 120Hz
-40
dB
eN
Output Voltage Noise
0.1Hz  f 10Hz
30
µVP-P
VN
Broadband Voltage Noise
10Hz  f 1kHz
52
µVRMS
Noise Density
f = 1kHz
1.1
µV/Hz
VOUT/TA
Thermal Hysteresis (Note 11)
TA = +165°C
100
ppm
VOUT/t
Long Term Stability (Note 12)
TA = +25°C
50
ppm
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FN6934.5
June 23, 2014
ISL21080
Electrical Specifications
(ISL21080-33, VOUT = 3.3V) VIN = 5.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER
DESCRIPTION
CONDITIONS
MIN
(Note 13)
TYP
MAX
(Note 13)
UNIT
VOUT
Output Voltage
VOA
VOUT Accuracy @ TA = +25°C (Notes 8, 9)
TC VOUT
Output Voltage Temperature Coefficient
(Note 10)
VIN
Input Voltage Range
IIN
Supply Current
0.31
1.5
µA
VOUT /VIN
Line Regulation
3.5 V < VIN < 5.5V
80
350
µV/V
VOUT/IOUT
Load Regulation
Sourcing: 0mA  IOUT  10mA
25
100
µV/mA
Sinking: -10mA  IOUT 0mA
50
350
µV/mA
ISC
Short Circuit Current
TA = +25°C, VOUT tied to GND
50
mA
tR
Turn-on Settling Time
VOUT = ±0.1% with no load
4
ms
3.3
-0.2
3.5
V
+0.2
%
50
ppm/°C
5.5
V
Ripple Rejection
f = 120Hz
-40
dB
eN
Output Voltage Noise
0.1Hz  f 10Hz
30
µVP-P
VN
Broadband Voltage Noise
10Hz  f 1kHz
52
µVRMS
Noise Density
f = 1kHz
1.1
µV/Hz
VOUT/TA
Thermal Hysteresis (Note 11)
TA = +165°C
100
ppm
VOUT/t
Long Term Stability (Note 12)
TA = +25°C
50
ppm
Electrical Specifications
(ISL21080-41 VOUT = 4.096V) VIN = 5.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER
DESCRIPTION
VOUT
Output Voltage
VOA
VOUT Accuracy @ TA = +25°C (Notes 8, 9)
TC VOUT
Output Voltage Temperature Coefficient
(Note 10)
VIN
Input Voltage Range
IIN
Supply Current
VOUT /VIN
Line Regulation
VOUT/IOUT
Load Regulation
CONDITIONS
MIN
(Note 13)
TYP
MAX
(Note 13)
4.096
-0.2
UNIT
V
+0.2
%
50
ppm/°C
8.0
V
0.5
1.5
µA
4.5 V < VIN < 8.0V
80
350
µV/V
Sourcing: 0mA  IOUT  10mA
10
100
µV/mA
Sinking: -10mA  IOUT 0mA
20
350
µV/mA
4.5
ISC
Short Circuit Current
TA = +25°C, VOUT tied to GND
80
mA
tR
Turn-on Settling Time
VOUT = ±0.1% with no load
4
ms
Ripple Rejection
f = 120Hz
-40
dB
eN
Output Voltage Noise
0.1Hz  f 10Hz
30
µVP-P
VN
Broadband Voltage Noise
10Hz  f 1kHz
52
µVRMS
Noise Density
f = 1kHz
1.1
µV/Hz
VOUT/TA
Thermal Hysteresis (Note 11)
TA = +165°C
100
ppm
VOUT/t
Long Term Stability (Note 12)
TA = +25°C
50
ppm
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FN6934.5
June 23, 2014
ISL21080
Electrical Specifications (ISL21080-50 VOUT = 5.0V) VIN = 6.5V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER
DESCRIPTION
MIN
(Note 13)
CONDITIONS
VOUT
Output Voltage
VOA
VOUT Accuracy @ TA = +25°C (Notes 8, 9)
TC VOUT
Output Voltage Temperature Coefficient
(Note 10)
VIN
Input Voltage Range
IIN
Supply Current
VOUT /VIN
Line Regulation
VOUT/IOUT
Load Regulation
MAX
(Note 13)
UNIT
+0.2
%
50
ppm/°C
8.0
V
0.5
1.5
µA
80
350
µV/V
TYP
5.0
-0.2
5.5
5.5 V < VIN < 8.0V
V
Sourcing: 0mA  IOUT  10mA
10
100
µV/mA
Sinking: -10mA  IOUT 0mA
20
350
µV/mA
80
mA
4
ms
ISC
Short Circuit Current
TA = +25°C, VOUT tied to GND
tR
Turn-on Settling Time
VOUT = ±0.1% with no load
Ripple Rejection
f = 120Hz
-40
dB
eN
Output Voltage Noise
0.1Hz  f 10Hz
30
µVP-P
VN
Broadband Voltage Noise
10Hz  f 1kHz
52
µVRMS
Noise Density
f = 1kHz
1.1
µV/Hz
VOUT/TA
Thermal Hysteresis (Note 11)
TA = +165°C
100
ppm
VOUT/t
Long Term Stability (Note 12)
TA = +25°C
50
ppm
NOTES:
10. Over the specified temperature range. Temperature coefficient is measured by the box method whereby the change in VOUT is divided by the
temperature range; in this case, -40°C to +85°C = +125°C.
11. Thermal Hysteresis is the change of VOUT measured @ TA = +25°C after temperature cycling over a specified range, TA. VOUT is read initially at TA
= +25°C for the device under test. The device is temperature cycled and a second VOUT measurement is taken at +25°C. The difference between
the initial VOUT reading and the second VOUT reading is then expressed in ppm. For  TA = +125°C, the device under test is cycled from +25°C to
+85°C to -40°C to +25°C.
12. Long term drift is logarithmic in nature and diminishes over time. Drift after the first 1000 hours will be approximately 10ppm/1khrs.
13. 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.
Typical Performance Characteristics Curves
VOUT = 0.9V, VIN = 3.0V, IOUT = 0mA, TA = +25°C
unless otherwise specified.
0.6
0.6
0.5
0.5
HIGH
0.4
IIN (µA)
IIN (µA)
0.4
0.3
LOW
0.2
TYP
0.3
0.2
-40°C
+25°C
3.6
4.0
VIN (V)
4.4
0.1
0.1
0
2.0
+85°C
2.4
2.8
3.2
3.6
4.0
VIN (V)
4.4
FIGURE 2. IIN vs VIN, 3 UNITS
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4.8
5.2
0
2.0
2.4
2.8
3.2
4.8
5.2
FIGURE 3. IIN vs VIN OVER-TEMPERATURE
FN6934.5
June 23, 2014
ISL21080
Typical Performance Characteristics Curves
VOUT = 0.9V, VIN = 3.0V, IOUT = 0mA, TA = +25°C
unless otherwise specified. (Continued)
200
0.90015
150
HIGH
0.90005
0.90000
0.89995
TYP
0.89990
0.89985
0.89980
2.0
2.4
2.8
3.2
3.6 4.0
VIN (V)
4.4
4.8
+85°C
100
VIN = 3.0V
VOUT (µV) NORMALIZED TO
LOW
0.90010
0.9V AT VIN = 3.0V
VOUT (V) NORMALIZED TO
0.90020
50
0
-50
-150
5.2
+25°C
-40°C
-100
2.0
2.4
2.8
3.2
3.6
4.0
VIN (V)
4.4
4.8
5.2
FIGURE 5. LINE REGULATION OVER-TEMPERATURE
FIGURE 4. LINE REGULATION, 3 UNITS
200
0.9010
0.9005
100
TYP
VOUT (mV)
NORMALIZED TO +25°C
VOUT (V)
150
LOW
0.9000
HIGH
VIN = +0.3V
50
0
-50
VIN = -0.3V
-100
0.8995
-150
0.8990
-40 -30 -20
-10
0
10 20 30 40 50 60 70
-200
80
0
0.5
1.0
1.5
2.0
3.0
3.5
4.0
4.5
5.0
FIGURE 7. LINE TRANSIENT RESPONSE, WITH CAPACITIVE LOAD
FIGURE 6. VOUT vs TEMPERATURE NORMALIZED to +25°C
200
500
VIN = +0.3V
150
2.5
TIME (µs)
TEMPERATURE (°C)
+85°C
50
VOUT (µV)
VOUT (mV)
100
0
-50
-40°C
VIN = -0.3V
-100
+25°C
-150
-200
0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
TIME (µs)
FIGURE 8. LINE TRANSIENT RESPONSE
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4.0
4.5
5.0
-500
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10
SINKING
SOURCING
LOAD (mA)
FIGURE 9. LOAD REGULATION OVER-TEMPERATURE
FN6934.5
June 23, 2014
ISL21080
Typical Performance Characteristics Curves
VOUT = 0.9V, VIN = 3.0V, IOUT = 0mA, TA = +25°C
unless otherwise specified. (Continued)
1000
500
800
400
ILOAD = +7mA
600
200
VOUT (mV)
VOUT (mV)
400
200
0
-200
100
0
-100
-400
-200
-600
-300
ILOAD = -7mA
-800
-1000
ILOAD = +50µA
300
0
1
2
3
4
ILOAD = -50µA
-400
5
6
TIME (ms)
7
8
9
-500
0
10
1
FIGURE 10. LOAD TRANSIENT RESPONSE
4
5
6
TIME (ms)
7
8
9
10
3.5
1.4
NO LOAD
3.0
7mA
1.2
2.5
LOW
1.0
VOUT (V)
VOUT (V)
3
FIGURE 11. LOAD TRANSIENT RESPONSE
1.6
0.8
0.6
2.0
VDD
TYP
HIGH
1.5
1.0
0.4
0.5
0.2
0
1.0 1.2
2
1.4
1.6
1.8
2.0 2.2
2.4
2.6
2.8
0
0
3.0
0.3
0.6
0.9
TIME (ms)
VIN (V)
1.2
1.5
FIGURE 13. TURN-ON TIME
FIGURE 12. DROPOUT
Typical Performance Characteristics Curves
VOUT = 1.5V, VIN = 3.0V, IOUT = 0mA, TA = +25°C
unless otherwise specified.
500
500
UNIT 1
400
400
+85°C
300
UNIT 3
IN (nA)
IN (nA)
UNIT 2
200
-40°C
+25°C
200
100
100
0
2.7
300
3.1
3.5
3.9
4.3
VIN (V)
4.7
FIGURE 14. IIN vs VIN, 3 UNITS
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5.1
5.5
0
2.7
3.1
3.5
3.9
4.3
VIN (V)
4.7
5.1
5.5
FIGURE 15. IIN vs VIN OVER-TEMPERATURE
FN6934.5
June 23, 2014
ISL21080
Typical Performance Characteristics Curves
VOUT = 1.5V, VIN = 3.0V, IOUT = 0mA, TA = +25°C
unless otherwise specified. (Continued)
150
125
1.50015
VOUT (µV)
(NORMALIZED TO VIN = 3V)
VOUT (V)
(NORMAILIZED TO 1.5V AT VIN = 3V)
1.50020
1.50010
1.50005
UNIT 2
1.50000
UNIT 1
1.49995
UNIT 3
1.49990
1.49985
100
75
50
+25°C
25
+85°C
0
-25
-50
-75
-100
-40°C
-125
1.49980
2.7
3.1
3.5
3.9
4.3
VIN (V)
4.7
5.1
-150
2.7
5.5
3.1
3.5
3.9
4.3
VIN (V)
4.7
5.1
5.5
FIGURE 17. LINE REGULATION OVER-TEMPERATURE
FIGURE 16. LINE REGULATION, 3 UNITS
1.5005
1.5004
C L = 500pF
1.5003
1.5001
UNIT 1
1.5000
1.4999
50mV/DIV
VOUT (V)
V IN = 0.3V
UNIT 2
1.5002
UNIT 3
1.4998
V IN = -0.3V
1.4997
1.4996
1.4995
-40 -30 -20 -10
0
10 20 30 40
VIN (V)
50
60 70
80
1ms/DIV
FIGURE 18. VOUT vs TEMPERATURE NORMALIZED to +25°C
FIGURE 19. LINE TRANSIENT RESPONSE, WITH CAPACITIVE LOAD
900
C L = 0pF
700
V IN = 0.3V
50mV/DIV
VOUT (µV)
500
+25°C
300
100
0
-40°C
-100
V IN = -0.3V
+85°C
-300
-500
1ms/DIV
FIGURE 20. LINE TRANSIENT RESPONSE
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11
-7 -6 -5
SINKING
-4 -3 -2 -1
0
1
2
OUTPUT CURRENT
3
4
5
6
7
SOURCING
FIGURE 21. LOAD REGULATION OVER-TEMPERATURE
FN6934.5
June 23, 2014
ISL21080
Typical Performance Characteristics Curves
VOUT = 1.5V, VIN = 3.0V, IOUT = 0mA, TA = +25°C
500mV/DIV
unless otherwise specified. (Continued)
100mV/DIV
IL = 7mA
IL = 50A
IL = -50A
IL = -7mA
2ms/DIV
1ms/DIV
FIGURE 22. LOAD TRANSIENT RESPONSE
FIGURE 23. LOAD TRANSIENT RESPONSE
3.5
1.52
NO LOAD
3.0
1.50
2.5
1.48
VOLTAGE (V)
VOUT (V)
7mA LOAD
1.46
1.44
1.5
1.0
1.40
0.5
2.0
2.5
3.0
3.5
VIN (V)
4.0
4.5
5.0
0
0
5.5
1.0
1.5
2.0 2.5 3.0
TIME (ms)
3.5
4.0
4.5
5.0
NO LOAD
-10
120
-20
1nF
100
PSRR (dB)
ZOUT (Ω)
0.5
0
NO LOAD
140
80
10nF
60
-30
1nF
10nF
-40
-50
40
100nF
20
0
UNIT 3
UNIT 2
FIGURE 25. TURN-ON TIME
FIGURE 24. DROPOUT
160
UNIT 1
2.0
1.42
1.38
1.5
VIN
-60
100nF
10
100
1k
10k
FREQUENCY (Hz)
FIGURE 26. ZOUT vs FREQUENCY
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12
100k
1M
-70
10
100
1k
10k
FREQUENCY (Hz)
100k
1M
FIGURE 27. PSRR vs FREQUENCY
FN6934.5
June 23, 2014
ISL21080
Typical Performance Characteristics Curves
1.6
1.6
NO LOAD
7mA
1.4
1.2
1.2
1.0
1.0
VOUT (V)
VOUT (V)
1.4
0.8
0.6
0.8
0.4
0.2
0.2
1.4
1.6
1.8
2.0 2.2
VIN (V)
2.4
2.6
2.8
0
3.0
1.3
FIGURE 28. DROPOUT, ISL21080-10
1.5
1.7
1.9
2.1
VIN (V)
2.3
2.5
2.7
2.9
FIGURE 29. DROPOUT, ISL21080-12
3.3
3.0
2.9
2.8
NO LOAD
3.2
7mA
2.7
NO LOAD
7mA
3.1
2.6
VOUT (V)
VOUT (V)
7mA
NO LOAD
0.6
0.4
0
1.2
TA = +25°C unless otherwise specified.
2.5
2.4
2.3
2.2
3.0
2.9
2.8
2.1
2.0
2.5
2.7
2.9
3.1
VIN (V)
3.3
2.7
3.0
3.5
4.3
3.5
4.2
7mA
3.4
3.8
4.0
NO LOAD
7mA
4.1
VOUT (V)
VOUT (V)
3.6
FIGURE 31. DROPOUT, ISL21080-30
3.6
3.3
4.0
3.2
3.9
3.1
3.8
3.0
3.3
3.4
VIN (V)
FIGURE 30. DROPOUT, ISL21080-25
NO LOAD
3.2
3.5
3.7
3.9
VIN (V)
4.1
FIGURE 32. DROPOUT, ISL21080-33
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4.3
4.5
3.7
4.1
4.3
4.5
4.7
4.9
5.1
VIN (V)
FIGURE 33. DROPOUT, ISL21080-41
FN6934.5
June 23, 2014
ISL21080
Typical Performance Characteristics Curves
TA = +25°C unless otherwise specified. (Continued)
5.3
5.2
NO LOAD
7mA
VOUT (V)
5.1
5.0
4.9
4.8
4.7
5.0
5.2
5.4
5.6
5.8
6.0
VIN (V)
FIGURE 34. DROPOUT, ISL21080-50
High Current Application
1.502
1.502
VIN = 5V
VIN = 5V
1.500
1.498
VIN = 3.5V
VREF (V)
VREF (V)
1.500
1.496
1.492
0
5
10
15
20
ILOAD (mA)
25
30
35
Applications Information
FGA Technology
The ISL21080 series of voltage references use the floating gate
technology to create references with very low drift and supply
current. Essentially, the charge stored on a floating gate cell is set
precisely in manufacturing. The reference voltage output itself is a
buffered version of the floating gate voltage. The resulting reference
device has excellent characteristics which are unique in the industry:
very low temperature drift, high initial accuracy, and almost zero
supply current. Also, the reference voltage itself is not limited by
voltage bandgaps or zener settings, so a wide range of reference
voltages can be programmed (standard voltage settings are
provided, but customer-specific voltages are available).
The process used for these reference devices is a floating gate CMOS
process, and the amplifier circuitry uses CMOS transistors for amplifier
and output transistor circuitry. While providing excellent accuracy, there
are limitations in output noise level and load regulation due to the MOS
device characteristics. These limitations are addressed with circuit
techniques discussed in other sections.
14
1.496
1.494
FIGURE 35. DIFFERENT VIN AT ROOM TEMPERATURE
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VIN = 3.5V
VIN = 3.3V
VIN = 3.3V
1.494
1.498
1.492
0
5
10
15
20
25
30
35
ILOAD (mA)
FIGURE 36. DIFFERENT VIN AT HIGH TEMPERATURE (+85°C)
Board Assembly Considerations
FGA references provide high accuracy and low temperature drift
but some PC board assembly precautions are necessary. Normal
Output voltage shifts of 100µV to 1mV can be expected with
Pb-free reflow profiles or wave solder on multi-layer FR4 PC
boards. Precautions should be taken to avoid excessive heat or
extended exposure to high reflow or wave solder temperatures,
this may reduce device initial accuracy.
Post-assembly x-ray inspection may also lead to permanent changes in
device output voltage and should be minimized or avoided. If x-ray
inspection is required, it is advisable to monitor the reference output
voltage to verify excessive shift has not occurred. If large amounts of
shift are observed, it is best to add an X-ray shield consisting of thin zinc
(300µm) sheeting to allow clear imaging, yet block
x-ray energy that affects the FGA reference.
Special Applications Considerations
In addition to post-assembly examination, there are also other
X-ray sources that may affect the FGA reference long term
accuracy. Airport screening machines contain X-rays and will
have a cumulative effect on the voltage reference output
accuracy. Carry-on luggage screening uses low level X-rays and is
FN6934.5
June 23, 2014
ISL21080
not a major source of output voltage shift, however, if a product is
expected to pass through that type of screening over 100 times,
it may need to consider shielding with copper or aluminum.
Checked luggage X-rays are higher intensity and can cause
output voltage shift in much fewer passes, thus devices expected
to go through those machines should definitely consider
shielding. Note that just two layers of 1/2 ounce copper planes
will reduce the received dose by over 90%. The leadframe for the
device which is on the bottom also provides similar shielding.
VIN = +3.0V
10µF
VIN
VOUT
ISL21080
GND
0.001µF TO 0.01µF
REF IN
If a device is expected to pass through luggage X-ray machines
numerous times, it is advised to mount a 2-layer (minimum) PC
board on the top, and along with a ground plane underneath will
effectively shield it from 50 to 100 passes through the machine.
Since these machines vary in X-ray dose delivered, it is difficult to
produce an accurate maximum pass recommendation.
SERIAL
BUS
SCK
SDAT
FIGURE 37. REFERENCE INPUT FOR ADC CONVERTER
Reference devices achieve their highest accuracy when powered
up continuously, and after initial stabilization has taken place.
This drift can be eliminated by leaving the power on continuously.
The ISL21080 is the first high precision voltage reference with ultra low
power consumption that makes it possible to leave power on
continuously in battery operated circuits. The ISL21080 consumes
extremely low supply current due to the proprietary FGA technology.
Supply current at room temperature is typically 350nA, which is 1 to 2
orders of magnitude lower than competitive devices. Application
circuits using battery power will benefit greatly from having an accurate,
stable reference, which essentially presents no load to the battery.
In particular, battery powered data converter circuits that would
normally require the entire circuit to be disabled when not in use
can remain powered up between conversions as shown in
Figure 37. Data acquisition circuits providing 12 bits to 24 bits of
accuracy can operate with the reference device continuously
biased with no power penalty, providing the highest accuracy and
lowest possible long term drift.
ISL21080 Used as a Low Cost Precision
Current Source
Using an N-JET and a Nanopower voltage reference, ISL21080, a
precision, low cost, high impedance current source can be
created. The precision of the current source is largely dependent
on the tempco and accuracy of the reference. The current setting
resistor contributes less than 20% of the error.
Board Mounting Considerations
For applications requiring the highest accuracy, board mounting
location should be reviewed. Placing the device in areas subject to
slight twisting can cause degradation of the accuracy of the
reference voltage due to die stresses. It is normally best to place the
device near the edge of a board, or the shortest side, as the axis of
bending is most limited at that location. Obviously, mounting the
device on flexprint or extremely thin PC material will likewise cause
loss of reference accuracy.
Other reference devices consuming higher supply currents will need to
be disabled in between conversions to conserve battery capacity.
Absolute accuracy will suffer as the device is biased and requires time
to settle to its final value, or, may not actually settle to a final value as
power on time may be short. Table 1 shows an example of battery life in
years for ISL21080 in various power on condition with 1.5µA maximum
current consumption.
TABLE 1. EXAMPLE OF BATTERY LIFE IN YEARS FOR ISL21080 IN
VARIOUS POWER ON CONDITIONS WITH 1.5µA MAX
CURRENT
BATTERY RATING
(mAH)
CONTINUOUS
50% DUTY
CYCLE
10% DUTY
CYCLE
40
3
6
30*
225
16.3*
32.6*
163*
NOTE: *Typical Li-ion battery has a shelf life of up to 10 years.
15
ENABLE
12 TO 24-BIT
A/D CONVERTER
Nanopower Operation
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0.01µF
+8V TO 28V
ISET =
VOUT
RSET
IL = ISET + IRSET
VIN
0.01µF
VOUT
ISL21080-1.5
VOUT = 1.5V
RSET
ZOUT > 100M
10kΩ
0.1%
10ppm/°C
GND
ISY ~ 0.31µA
ISET
IL AT 0.1% ACCURACY
~150.3µA
FIGURE 38. ISL21080 USED AS A LOW COST PRECISION CURRENT
SOURCE
FN6934.5
June 23, 2014
ISL21080
Noise Performance and Reduction
Turn-On Time
The output noise voltage in a 0.1Hz to 10Hz bandwidth is
typically 30µVP-P. This is shown in the plot in the “Typical
Performance Characteristics Curves” which begin on page 10.
The noise measurement is made with a bandpass filter made of
a 1-pole high-pass filter with a corner frequency at 0.1Hz and a
2-pole low-pass filter with a corner frequency at 12.6Hz to create
a filter with a 9.9Hz bandwidth. Noise in the 10kHz to 1MHz
bandwidth is approximately 400µVP-P with no capacitance on
the output, as shown in Figure 39. These noise measurements
are made with a 2 decade bandpass filter made of a 1-pole
high-pass filter with a corner frequency at 1/10 of the center
frequency and 1-pole low-pass filter with a corner frequency at
10 times the center frequency. Figure 39 also shows the noise in
the 10kHz to 1MHz band can be reduced to about 50µVP-P using
a 0.001µF capacitor on the output. Noise in the 1kHz to 100kHz
band can be further reduced using a 0.1µF capacitor on the
output, but noise in the 1Hz to 100Hz band increases due to
instability of the very low power amplifier with a 0.1µF
capacitance load. For load capacitances above 0.001µF, the
noise reduction network shown in Figure 40 is recommended.
This network reduces noise significantly over the full bandwidth.
As shown in Figure 39, noise is reduced to less than 40µVP-P
from 1Hz to 1MHz using this network with a 0.01µF capacitor
and a 2k resistor in series with a 10µF capacitor.
The ISL21080 devices have ultra-low supply current and thus, the
time to bias-up internal circuitry to final values will be longer than
with higher power references. Normal turn-on time is typically
7ms. This is shown in Figure 38. Since devices can vary in supply
current down to >300nA, turn-on time can last up to about 12ms.
Care should be taken in system design to include this delay
before measurements or conversions are started.
Temperature Coefficient
The limits stated for temperature coefficient (tempco) are governed
by the method of measurement. The overwhelming standard for
specifying the temperature drift of a reference, is to measure the
reference voltage at two temperatures, take the total variation,
(VHIGH - VLOW), and divide by the temperature extremes of
measurement (THIGH – TLOW). The result is divided by the nominal
reference voltage (at T = +25°C) and multiplied by 106 to yield
ppm/°C. This is the “Box” method for specifying temperature
coefficient.
NOISE VOLTAGE (µVP-P)
400
CL = 0
350
CL = 0.001µF
300
CL = 0.1µF
CL = 0.01µF AND 10µF + 2kΩ
250
200
150
100
50
0
1
10
100
1k
10k
100k
FIGURE 39. NOISE REDUCTION
VIN = 3.0V
10µF
0.1µF
VIN
VO
ISL21080
GND
2kΩ
0.01µF
10µF
FIGURE 40. NOISE REDUCTION NETWORK
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in the quality certifications found at www.intersil.com/en/support/qualandreliability.html
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
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FN6934.5
June 23, 2014
ISL21080
Typical Application Circuits
VIN = 3.0V
R = 200
2N2905
VIN
ISL21080 VOUT
2.5V/50mA
0.001µF
GND
FIGURE 41. PRECISION 2.5V 50mA REFERENCE
2.7V TO 5.5V
0.1µF
10µF
VIN
VOUT
ISL21080
GND
0.001µF
VCC
RH
VOUT
X9119
+
SDA
2-WIRE BUS
SCL
VSS
–
VOUT
(BUFFERED)
RL
FIGURE 42. 2.5V FULL SCALE LOW-DRIFT 10-BIT ADJUSTABLE VOLTAGE SOURCE
2.7V TO 5.5V
0.1µF
10µF
VIN
VOUT
ISL21080
+
VOUT SENSE
–
LOAD
GND
FIGURE 43. KELVIN SENSED LOAD
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ISL21080
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make sure you
have the latest Rev.
DATE
REVISION
CHANGE
June 23, 2014
FN6934.5
Converted to New Template
Updated POD with following changes:
In Detail A, changed lead width dimension from 0.13+/-0.05 to 0.085-0.19
Changed dimension of foot of lead from 0.31+/-0.10 to 0.38+/-0.10
In Land Pattern, added 0.4 Rad Typ dimension
In Side View, changed height of package from 0.91+/-0.03 to 0.95+/-0.07
May, 12, 2010
FN6934.4
Changed Theta JA in the “Thermal Information” on page 3 from 170 to 275. Added Theta JC and applicable note.
April 29, 2010
FN6934.3
Incorrect Thermal information, needs to be re-evaluated and added at a later date when the final data is
available. Removed Theta JC and applicable note from “Thermal Information” on page 3.
April 14, 2010
Corrected y axis label on Figure 9 from “VOUT (V)” to “VOUT (µV)”
April 6, 2010
Source/sink for 0.9V option changed from 7mA to 10mA
Line regulation condition for 0.9V changed from 2.7V to 2V
Line regulation typical for 0.9V option changed from 10 to 30µV/V
TA in Thermal Hysterisis conditions of 0.9V option changed from 165°C to 125°C
Moved “Board Assembly Considerations” and “Special Applications Considerations” to page 14. Deleted
“Handling and Board Mounting” section since “Board Assembly Considerations” on page 14 contains same
discussion.
Added “Special Note: Post-assembly x-ray inspection may lead to permanent changes in device output voltage
and should be minimized or avoided.” to “ISL21080” on page 1
Figures 2 and 3 revised to show line regulation and Iin down to 2V.
Figures 4 and 5 revised to show Vin down to 2V.
Added “Initial accuracy can change 10mV or more under extreme radiation.” to Note 9 on page 3.
April 1, 2010
1. page 3: Change Vin Min from 2.7 to 2.0
2. page 3: Change Iin Typ from 0.31 to 0.35
3. page 3: Change Line Reg Typ from 80 to 10
4. page 3: Change Load Reg Condition from 7mA to 10mA and -7mA to -10mA
5. page 3: Change Load Reg Typ for Source from 25 to 6 and Sink from 50 to 23.
6. page 3: Change Isc Typ from 50 to 30
7. page 3: Change tR from 4 to 1
8. Change Ripple Rejection typ for all options from -30 to -40
9. page 3: Change eN typ from 30 to 40V
10. page 3: Change VN typ from 50 to 10V
11. page 3: Change Noise Density typ from 1.1 to 2.2
12. page 3: Change Long Term Stability from 50 to 60
13. Added Figure 2 to 13 on page 8 to page 10 for 0.9V curves.
14. Added Figure 28 to 34 on page 13 to page 14 for other options Dropout curve.
15. page 1: Change Input Voltage Range for 0.9V option from TBD to 2V to 5.5V
16. Added latch up to “Absolute Maximum Ratings” on page 3
17. Added Junction Temperature to “Thermal Information” on page 3
18. Added JEDEC standards used at the time of testing for “ESD Ratings” on page 3
19. HBM in “Absolute Maximum Ratings” on page 3 changed from 5.5kV to 5kV
20. Added Theta JC and applicable note.
March 25, 2010
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Throughout- Converted to new format. Changes made as follows:
Moved “Pin Configuration” and “Pin Descriptions” to page 2
Added “Related Literature” to page 1
Added key selling feature graphic Figure 1 to page 1
Added "Boldface limits apply..." note to common conditions of Electrical Specifications tables on page 3 through
page 8. Bolded applicable specs. Added Note 13 to MIN MAX columns of all Electrical Specifications tables.
Added ““Environmental Operating Conditions” to page 3 and added Note 5
Added “The process used for these reference devices is a floating gate CMOS process, and the amplifier circuitry
uses CMOS transistors for amplifier and output transistor circuitry. While providing excellent accuracy, there are
limitations in output noise level and load regulation due to the MOS device characteristics. These limitations are
addressed with circuit techniques discussed in other sections.” on page 14
18
FN6934.5
June 23, 2014
ISL21080
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make sure you
have the latest Rev.
DATE
REVISION
Oct 14,2009
FN6934.2
1. Removed "Coming Soon" on page 1 and 2 for -10, -20, -41, and -50 options.
2. Page 1. Moved "ISL21080-505.5V to 8.0V" from bullet to sub-bullet.
3. Update package outline drawing P3.064 to most recent revision. Updates to package were to add land
pattern and move dimensions from table onto drawing (no change to package dimensions)
CHANGE
Sep 04, 2009
FN6934.1
Converted to new Intersil template. Added Revision History and Products Information. Updated Ordering
Information to match Intrepid, numbered all notes and added Moisture
Sensitivity Note with links. Moved Pin Descriptions to page 1 to follow pinout
Changed in Features Section
From: Reference Output Voltage1.25V, 1.5V, 2.500V, 3.300V
To: Reference Output Voltage
0.900V, 1.024V, 1.250V, 1.500V, 2.048V, 2.500V, 3.000V,
3.300V, 4.096V, 5.000V
From: Initial Accuracy: 1.5V±0.5%
To: Initial Accuracy:
ISL21080-09 and -10±0.7%
ISL21080-12 ±0.6%
ISL21080-15±0.5%
ISL21080-20 and -25±0.3%
ISL21080-30, -33, -41, and -50±0.2%
FROM: Input Voltage Range
ISL21080-12 (Coming Soon)2.7V to 5.5V
ISL21080-152.7V to 5.5V
ISL21080-25 (Coming Soon)2.7V to 5.5V
ISL21080-33 (Coming Soon)3.5V to 5.5V
TO: Input Voltage Range:
ISL21080-09, -10, -12, -15, -20, and -252.7V to 5.5V
ISL21080-09, -10, and 20 (Coming Soon)
ISL21080-303.2V to 5.5V
ISL21080-333.5V to 5.5V
ISL21080-41 (Coming Soon)4.5V to 8.0V
Added: ISL21080-50 (Coming Soon)5.5V to 8.0V Output Voltage Noise
30µVP-P (0.1Hz to 10Hz)
Updated Electrical Spec Tables by Tables with Voltage References 9, 10, 12, 20, 25, 30, 33
and 41.
Added to Abs Max Ratings:
VIN to GND (ISL21080-41 and 50 only-0.5V to +10V
VOUT to GND (10s)
(ISL21080-41 and 50 only-0.5V to +5.1V
Changed Tja in Thermal information from "202.70" to "170" to match ASYD in Intrepid
Added Note:
Post-assembly x-ray inspection may also lead to permanent changes in device output voltage and should be
minimized or avoided. Most inspection equipment will not affect the FGA reference voltage, but if x-ray
inspection is required, it is advisable to monitor the reference output voltage to verify excessive shift has not
occurred.
Added Special Applications Considerations Section on page 12.
July 28,2009
FN6934.0
Initial Release.
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FN6934.5
June 23, 2014
ISL21080
Package Outline Drawing
P3.064
3 LEAD SMALL OUTLINE TRANSISTOR PLASTIC PACKAGE (SOT23-3)
Rev 3, 3/12
2.92±0.12
4
DETAIL "A"
C
L
0.085 - 0.19
2.37±0.27
1.30±0.10
4
C
L
0.950
0.435±0.065
0 - 8 deg.
0.20 M C
TOP VIEW
10° TYP
(2 plcs)
0.25
0.95±0.07
GAUGE PLANE
1.00±0.12
SEATING PLANE
C
SEATING PLANE
0.10 C
0.38±0.10 5
0.013(MIN)
0.100(MAX)
SIDE VIEW
DETAIL "A"
(0.60)
NOTES:
(2.15)
1.
Dimensions are in millimeters.
Dimensions in ( ) for Reference Only.
2.
Dimensioning and tolerancing conform to AMSEY14.5m-1994.
3.
Reference JEDEC TO-236.
4.
Dimension does not include interlead flash or protrusions.
Interlead flash or protrusions shall not exceed 0.25mm per side.
5.
Footlength is measured at reference to gauge plane.
(1.25)
(0.4 RAD TYP.)
(0.95 typ.)
TYPICAL RECOMMENDED LAND PATTERN
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FN6934.5
June 23, 2014