ISL21080DIH310Z-TK [INTERSIL]
300nA NanoPower Voltage References; 300nA的纳安级功耗电压参考
| 型号： | ISL21080DIH310Z-TK |
| 厂家： | 
Intersil |
| 描述： | 300nA NanoPower Voltage References |
| 文件： | 总17页 (文件大小：654K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
300nA NanoPower Voltage References
ISL21080
Features
• Reference Output Voltage 0.900V, 1.024V, 1.250V,
1.500V, 2.048V, 2.500V, 3.000V, 3.300V, 4.096V,
5.000V
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.
• 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%
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.
• Input Voltage Range:
- ISL21080-09, -10, -12, -15, -20,
and -25 . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
- ISL21080-09 (Coming Soon)
- 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
Pin Configuration
ISL21080
(3 LD SOT-23)
TOP VIEW
• Output Voltage Noise . . . 30µV
(0.1Hz to 10Hz)
P-P
• Supply Current. . . . . . . . . . . . . . . . 1.5µA (Max)
• Tempco . . . . . . . . . . . . . . . . . . . . . . . 50ppm/°C
• Output Current Capability . . . . . . . . . . . . . ±7mA
• Operating Temperature Range . . . -40°C to +85°C
• Package . . . . . . . . . . . . . . . . . . . . .3 Ld SOT-23
• Pb-Free (RoHS compliant)
1
2
V
IN
3
GND
V
OUT
Pin Descriptions
Applications
PIN
• Energy Harvesting Applications
• Wireless Sensor Network Applications
NUMBER
PIN NAME
DESCRIPTION
Input Voltage Connection.
Voltage Reference Output
Ground Connection
1
2
3
V
IN
• Low Power Voltage Sources for Controllers, FPGA,
ASICs or Logic Devices
V
OUT
• Battery Management/Monitoring
• Low Power Standby Voltages
• Portable Instrumentation
GND
• Consumer/Medical Electronics
• Wearable Electronics
• Lower Cost Industrial and Instrumentation
• Power Regulation Circuits
• Control Loops and Compensation Networks
• LED/Diode Supply
October 14, 2009
FN6934.2
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
FGA is a trademark of Intersil Corporation. Copyright Intersil Americas Inc. 2009. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1
ISL21080
Ordering Information
PACKAGE
Tape & Reel
(Pb-Free)
PART NUMBER
(Notes 1, 2)
PART
MARKING
V
OPTION
(V)
GRADE
(%)
TEMP. RANGE
(°C)
PKG.
DWG. #
OUT
Coming Soon
ISL21080DIH309Z-TK
ISL21080DIH310Z-TK
ISL21080DIH312Z-TK
ISL21080CIH315Z-TK
ISL21080CIH320Z-TK
ISL21080CIH325Z-TK
ISL21080CIH330Z-TK
ISL21080CIH333Z-TK
ISL21080CIH341Z-TK
ISL21080CIH350Z-TK
NOTES:
BCLA
BCMA
BCNA
BCDA
BCPA
BCRA
BCSA
BCTA
BCVA
BCWA
0.9
±0.7
±0.7
±0.6
±0.5
±0.3
±0.3
±0.2
±0.2
±0.2
±0.2
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
3 Ld SOT-23
P3.064
P3.064
P3.064
P3.064
P3.064
P3.064
P3.064
P3.064
P3.064
P3.064
1.024
1.25
1.5
3 Ld SOT-23
3 Ld SOT-23
3 Ld SOT-23
3 Ld SOT-23
3 Ld SOT-23
3 Ld SOT-23
3 Ld SOT-23
3 Ld SOT-23
3 Ld SOT-23
2.048
2.5
3.0
3.3
4.096
5.0
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.
FN6934.2
October 14, 2009
2
ISL21080
Absolute Maximum Ratings
Thermal Information
Max Voltage
Thermal Resistance (Typical)
θ
JA (°C/W)
170
V
V
to GND. . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6.5V
to GND (ISL21080-41 and 50 only . . . .-0.5V to +10V
IN
IN
3 Ld SOT-23 Package (Note 4).....................
Continuous Power Dissipation (T = +85°C). . . . . . . . 99mW
Storage Temperature Range. . . . . . . . . . . -65°C to +150°C
Pb-Free Reflow Profile (Note 5). . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
A
V
V
to GND (10s). . . . . . . . . . . . . . -0.5V to VOUT +1V
to GND (10s)
(ISL21080-41 and 50 only . . . . . . . . . -0.5V to +5.1V
OUT
OUT
ESD Rating
Human Body Model . . . . . . . . . . . . . . . . . . . . . . . 5500V
Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . 500V
Charged Device Model . . . . . . . . . . . . . . . . . . . . . . . 2kV
Recommended Operating Conditions
Temperature. . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . .2.7V to 5.5V
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:
4. θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief
TB379 for details.
5. 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.
6. 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.
Electrical Specifications (ISL21080-09, V
= 0.9V) V = 3.0V, T = -40°C to +85°C, I
= 0, unless otherwise
OUT
IN
A
OUT
specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
V
V
Output Voltage
Accuracy @ T = +25°C (Notes 5, 6)
0.9
V
%
OUT
OA
V
-0.7
2.7
+0.7
50
OUT
A
TC V
Output Voltage Temperature Coefficient
(Note 7)
ppm/°C
OUT
V
Input Voltage Range
Supply Current
5.5
V
IN
I
0.31 1.5
µA
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
2.7 V < V < 5.5V
IN
80
25
50
50
4
350
µV/V
OUT
OUT
IN
/ΔI
Sourcing: 0mA ≤ I
≤ 7mA
≤ 0mA
100 µV/mA
OUT
OUT
OUT
Sinking: -7mA ≤ I
350 µV/mA
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
T = +25°C, V
tied to GND
mA
ms
dB
SC
A
OUT
t
V
OUT
= ±0.1% with no load
R
f = 120Hz
-30
30
52
1.1
100
50
e
Output Voltage Noise
Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
µV
P-P
N
V
µV
RMS
N
µV/√Hz
ppm
ΔV
ΔV
/ΔT
Thermal Hysteresis (Note 8)
Long Term Stability (Note 9)
ΔT = +165°C
A
OUT
A
/Δt
T = +25°C
ppm
OUT
A
Electrical Specifications (ISL21080-10, V
= 1.024V) V = 3.0V, T = -40°C to +85°C, I
= 0, unless
OUT
IN
A
OUT
otherwise specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
V
V
Output Voltage
1.024
V
OUT
OA
V
Accuracy @ T = +25°C (Notes 5, 6)
A
-0.7
+0.7
%
OUT
FN6934.2
October 14, 2009
3
ISL21080
Electrical Specifications (ISL21080-10, V
= 1.024V) V = 3.0V, T = -40°C to +85°C, I
otherwise specified. (Continued)
= 0, unless
OUT
IN
A
OUT
PARAMETER
TC V
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
Output Voltage Temperature Coefficient
50
ppm/°C
OUT
(Note 7)
V
Input Voltage Range
Supply Current
Line Regulation
Load Regulation
2.7
5.5
V
IN
I
0.31 1.5
µA
IN
ΔV
ΔV
/ΔV
2.7 V < V < 5.5V
IN
80
25
50
50
4
350
µV/V
OUT
OUT
IN
/ΔI
Sourcing: 0mA ≤ I
≤ 7mA
≤ 0mA
100 µV/mA
OUT
OUT
OUT
Sinking: -7mA ≤ I
350 µV/mA
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
T = +25°C, V
tied to GND
mA
ms
dB
SC
A
OUT
t
V
OUT
= ±0.1% with no load
R
f = 120Hz
-30
30
52
1.1
100
50
e
Output Voltage Noise
Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
µV
P-P
N
V
µV
RMS
N
µV/√Hz
ppm
ΔV
ΔV
/ΔT
Thermal Hysteresis (Note 8)
Long Term Stability (Note 9)
ΔT = +165°C
A
OUT
OUT
A
/Δt
T = +25°C
ppm
A
Electrical Specifications (ISL21080-12, V
= 1.25V) V = 3.0V, T = -40°C to +85°C, I
= 0, unless otherwise
OUT
IN
A
OUT
specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
V
V
Output Voltage
Accuracy @ T = +25°C (Notes 5, 6)
1.25
V
%
OUT
OA
V
-0.6
2.7
+0.6
50
OUT
A
TC V
Output Voltage Temperature Coefficient
(Note 7)
ppm/°C
OUT
V
Input Voltage Range
Supply Current
5.5
V
IN
I
0.31 1.5
µA
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
2.7 V < V < 5.5V
IN
80
25
50
50
4
350
µV/V
OUT
OUT
IN
/ΔI
Sourcing: 0mA ≤ I
≤ 7mA
≤ 0mA
100 µV/mA
OUT
OUT
OUT
Sinking: -7mA ≤ I
350 µV/mA
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
T = +25°C, V
tied to GND
mA
ms
dB
SC
A
OUT
t
V
OUT
= ±0.1% with no load
R
f = 120Hz
-30
30
52
1.1
100
50
e
Output Voltage Noise
Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
µV
P-P
N
V
µV
RMS
N
µV/√Hz
ppm
ΔV
ΔV
/ΔT
Thermal Hysteresis (Note 8)
Long Term Stability (Note 9)
ΔT = +165°C
A
OUT
A
/Δt
T = +25°C
ppm
OUT
A
Electrical Specifications (ISL21080-15, V
= 1.5V) V = 3.0V, T = -40°C to +85°C, I
= 0, unless otherwise
OUT
IN
A
OUT
specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
V
V
Output Voltage
1.5
V
OUT
OA
V
Accuracy @ T = +25°C (Notes 5, 6)
A
-0.5
+0.5
%
OUT
FN6934.2
October 14, 2009
4
ISL21080
Electrical Specifications (ISL21080-15, V
= 1.5V) V = 3.0V, T = -40°C to +85°C, I
specified. (Continued)
= 0, unless otherwise
OUT
IN
A
OUT
PARAMETER
TC V
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
Output Voltage Temperature Coefficient
(Note 7)
50
ppm/°C
OUT
V
Input Voltage Range
Supply Current
2.7
5.5
V
IN
I
0.31 1.5
µA
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
2.7 V < V < 5.5V
IN
80
10
50
50
4
350
µV/V
OUT
OUT
IN
/ΔI
Sourcing: 0mA ≤ I
≤ 7mA
≤ 0mA
100 µV/mA
OUT
OUT
OUT
Sinking: -7mA ≤ I
350 µV/mA
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
T = +25°C, V
tied to GND
mA
ms
dB
SC
A
OUT
t
V
OUT
= ±0.1% with no load
R
f = 120Hz
-30
30
52
1.1
100
50
e
Output Voltage Noise
Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
µV
P-P
N
V
µV
RMS
N
µV/√Hz
ppm
ΔV
ΔV
/ΔT
Thermal Hysteresis (Note 8)
Long Term Stability (Note 9)
ΔT = +165°C
A
OUT
OUT
A
/Δt
T = +25°C
ppm
A
Electrical Specifications (ISL21080-20, V
= 2.048V) V = 3.0V, T = -40°C to +85°C, I
= 0, unless
OUT
OUT
IN
A
otherwise specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
V
V
Output Voltage
Accuracy @ T = +25°C (Notes 5, 6)
2.048
V
%
OUT
OA
V
-0.3
2.7
+0.3
50
OUT
A
TC V
Output Voltage Temperature Coefficient
(Note 7)
ppm/°C
OUT
V
Input Voltage Range
Supply Current
5.5
V
IN
I
0.31 1.5
µA
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
2.7 V < V < 5.5V
IN
80
25
50
50
4
350
µV/V
OUT
OUT
IN
/ΔI
Sourcing: 0mA ≤ I
≤ 7mA
≤ 0mA
100 µV/mA
OUT
OUT
OUT
Sinking: -7mA ≤ I
350 µV/mA
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
T = +25°C, V
tied to GND
mA
ms
dB
SC
A
OUT
t
V
OUT
= ±0.1% with no load
R
f = 120Hz
-30
30
52
1.1
100
50
e
Output Voltage Noise
Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
µV
P-P
N
V
µV
RMS
N
µV/√Hz
ppm
ΔV
ΔV
/ΔT
Thermal Hysteresis (Note 8)
Long Term Stability (Note 9)
ΔT = +165°C
A
OUT
OUT
A
/Δt
T = +25°C
ppm
A
Electrical Specifications (ISL21080-25, V
= 2.5V) V = 3.0V, T = -40°C to +85°C, I
= 0, unless otherwise
OUT
IN
A
OUT
specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
V
V
Output Voltage
2.5
V
OUT
OA
V
Accuracy @ T = +25°C (Notes 5, 6)
A
-0.3
+0.3
%
OUT
FN6934.2
October 14, 2009
5
ISL21080
Electrical Specifications (ISL21080-25, V
= 2.5V) V = 3.0V, T = -40°C to +85°C, I
specified. (Continued)
= 0, unless otherwise
OUT
IN
A
OUT
PARAMETER
TC V
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
Output Voltage Temperature Coefficient
(Note 7)
50
ppm/°C
OUT
V
Input Voltage Range
Supply Current
2.7
5.5
V
IN
I
0.31 1.5
µA
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
2.7 V < V < 5.5V
IN
80
25
50
50
4
350
µV/V
OUT
OUT
IN
/ΔI
Sourcing: 0mA ≤ I
≤ 7mA
≤ 0mA
100 µV/mA
OUT
OUT
OUT
Sinking: -7mA ≤ I
350 µV/mA
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
T = +25°C, V
tied to GND
mA
ms
dB
SC
A
OUT
t
V
OUT
= ±0.1% with no load
R
f = 120Hz
-30
30
52
1.1
100
50
e
Output Voltage Noise
Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
µV
P-P
N
V
µV
RMS
N
µV/√Hz
ppm
ΔV
ΔV
/ΔT
Thermal Hysteresis (Note 8)
Long Term Stability (Note 9)
ΔT = +165°C
A
OUT
OUT
A
/Δt
T = +25°C
ppm
A
Electrical Specifications (ISL21080-30, V
= 3.0V) V = 5.0V, T = -40°C to +85°C, I
= 0, unless otherwise
OUT
IN
A
OUT
specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
V
V
Output Voltage
Accuracy @ T = +25°C (Notes 5, 6)
3.0
V
%
OUT
OA
V
-0.2
3.2
+0.2
50
OUT
A
TC V
Output Voltage Temperature Coefficient
(Note 7)
ppm/°C
OUT
V
Input Voltage Range
Supply Current
5.5
V
IN
I
0.31 1.5
µA
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
3.2 V < V < 5.5V
IN
80
25
50
50
4
350
µV/V
OUT
OUT
IN
/ΔI
Sourcing: 0mA ≤ I
≤ 7mA
≤ 0mA
100 µV/mA
OUT
OUT
OUT
Sinking: -7mA ≤ I
350 µV/mA
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
T = +25°C, V
tied to GND
mA
ms
dB
SC
A
OUT
t
V
OUT
= ±0.1% with no load
R
f = 120Hz
-30
30
52
1.1
100
50
e
Output Voltage Noise
Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
µV
P-P
N
V
µV
RMS
N
µV/√Hz
ppm
ΔV
ΔV
/ΔT
Thermal Hysteresis (Note 8)
Long Term Stability (Note 9)
ΔT = +165°C
A
OUT
A
/Δt
T = +25°C
ppm
OUT
A
Electrical Specifications (ISL21080-33, V
= 3.3V) V = 5.0V, T = -40°C to +85°C, I
= 0, unless otherwise
OUT
IN
A
OUT
specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
V
V
Output Voltage
3.3
V
OUT
OA
V
Accuracy @ T = +25°C (Note 5, 6)
A
-0.2
+0.2
%
OUT
FN6934.2
October 14, 2009
6
ISL21080
Electrical Specifications (ISL21080-33, V
= 3.3V) V = 5.0V, T = -40°C to +85°C, I
specified. (Continued)
= 0, unless otherwise
OUT
IN
A
OUT
PARAMETER
TC V
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
Output Voltage Temperature Coefficient
(Note 7)
50
ppm/°C
OUT
V
Input Voltage Range
Supply Current
3.5
5.5
V
IN
I
0.31 1.5
µA
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
3.5 V < V < 5.5V
IN
80
25
50
50
4
350
µV/V
OUT
OUT
IN
/ΔI
Sourcing: 0mA ≤ I
OUT
≤ 10mA
≤ 0mA
100 µV/mA
OUT
Sinking: -10mA ≤ I
OUT
350 µV/mA
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
T = +25°C, V
tied to GND
mA
ms
dB
SC
A
OUT
t
V
OUT
= ±0.1% with no load
R
f = 120Hz
-30
30
52
1.1
100
50
e
Output Voltage Noise
Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
µV
P-P
N
V
µV
RMS
N
µV/√Hz
ppm
ΔV
ΔV
/ΔT
Thermal Hysteresis (Note 8)
Long Term Stability (Note 9)
ΔT = +165°C
A
OUT
A
/Δt
T = +25°C
ppm
OUT
A
Electrical Specifications (ISL21080-41 V
= 4.096V) V = 5.0V, T = -40°C to +85°C, I
= 0, unless otherwise
OUT
IN
A
OUT
specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
V
V
Output Voltage
Accuracy @ T = +25°C (Note 5, 6)
4.096
V
%
OUT
OA
V
-0.2
4.5
+0.2
50
OUT
A
TC V
Output Voltage Temperature Coefficient
(Note 7)
ppm/°C
OUT
V
Input Voltage Range
Supply Current
8.0
1.5
350
V
IN
I
0.5
80
10
20
80
4
µA
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
4.5 V < V < 8.0V
IN
µV/V
OUT
OUT
IN
/ΔI
Sourcing: 0mA ≤ I
OUT
≤ 10mA
≤ 0mA
100 µV/mA
OUT
Sinking: -10mA ≤ I
350 µV/mA
OUT
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
T = +25°C, V
tied to GND
= ±0.1% with no load
mA
ms
dB
SC
A
OUT
t
V
OUT
R
f = 120Hz
-30
30
52
1.1
100
50
e
Output Voltage Noise
Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
µV
P-P
N
V
µV
RMS
N
µV/√Hz
ppm
ΔV
ΔV
/ΔT
Thermal Hysteresis (Note 8)
Long Term Stability (Note 9)
ΔT = +165°C
A
OUT
OUT
A
/Δt
T = +25°C
ppm
A
Electrical Specifications (ISL21080-50 V
= 5.0V) V = 6.5V, T = -40°C to +85°C, I
= 0, unless otherwise
OUT
IN
A
OUT
specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
V
V
Output Voltage
5.0
V
OUT
OA
V
Accuracy @ T = +25°C (Note 5, 6)
A
-0.2
+0.2
%
OUT
FN6934.2
October 14, 2009
7
ISL21080
Electrical Specifications (ISL21080-50 V
= 5.0V) V = 6.5V, T = -40°C to +85°C, I
specified. (Continued)
= 0, unless otherwise
OUT
IN
A
OUT
PARAMETER
TC V
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
Output Voltage Temperature Coefficient
(Note 7)
50
ppm/°C
OUT
V
Input Voltage Range
Supply Current
5.5
8.0
1.5
350
V
IN
I
0.5
80
10
20
80
4
µA
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
5.5 V < V < 8.0V
IN
µV/V
OUT
OUT
IN
/ΔI
Sourcing: 0mA ≤ I
≤ 10mA
≤ 0mA
100 µV/mA
OUT
OUT
Sinking: -10mA ≤ I
350 µV/mA
OUT
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
T = +25°C, V
tied to GND
= ±0.1% with no load
mA
ms
dB
SC
A
OUT
t
V
OUT
R
f = 120Hz
-30
30
52
1.1
100
50
e
Output Voltage Noise
Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
µV
P-P
N
V
µV
RMS
N
µV/√Hz
ppm
ΔV
ΔV
/ΔT
Thermal Hysteresis (Note 8)
Long Term Stability (Note 9)
ΔT = +165°C
A
OUT
OUT
A
/Δt
T = +25°C
ppm
A
NOTES:
7. Over the specified temperature range. Temperature coefficient is measured by the box method whereby the change in V
is divided by the temperature range; in this case, -40°C to +85°C = +125°C.
OUT
8. Thermal Hysteresis is the change of V
measured @ T = +25°C after temperature cycling over a specified range, ΔT . V
OUT
OUT
A
A
is read initially at T = +25°C for the device under test. The device is temperature cycled and a second V
measurement
A
OUT
reading is then expressed in ppm.
is taken at +25°C. The difference between the initial V
reading and the second V
OUT
OUT
For Δ T = +125°C, the device under test is cycled from +25°C to +85°C to -40°C to +25°C.
A
9. Long term drift is logarithmic in nature and diminishes over time. Drift after the first 1000 hours will be approximately
10ppm/√1khrs
Typical Performance Characteristics Curves
V
= 1.5V, V = 3.0V, I = 0mA,
IN OUT
OUT
T = +25°C unless otherwise specified.
A
500
400
300
200
100
0
500
400
300
200
100
0
UNIT 1
+85°C
UNIT 2
UNIT 3
-40°C
+25°C
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
(V)
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
(V)
V
V
IN
IN
FIGURE 2. I
vs V OVER-TEMPERATURE
IN
FIGURE 1. I
vs V , 3 UNITS
IN
IN
IN
FN6934.2
October 14, 2009
8
ISL21080
Typical Performance Characteristics Curves
V
= 1.5V, V = 3.0V, I = 0mA,
IN OUT
OUT
T = +25°C unless otherwise specified.
A
150
125
100
75
1.50020
1.50015
1.50010
1.50005
50
+25°C
+85°C
UNIT 2
UNIT 1
25
0
1.50000
1.49995
-25
-50
-75
-100
-125
-150
UNIT 3
1.49990
1.49985
1.49980
-40°C
2.72.93.13.33.53.73.94.14.34.54.74.95.15.35.5
2.72.93.13.33.53.73.94.14.34.54.74.95.15.35.5
(V)
V
(V)
IN
V
IN
FIGURE 3. LINE REGULATION, 3 UNITS
FIGURE 4. LINE REGULATION OVER-TEMPERATURE
1.5005
1.5004
1.5003
1.5002
1.5001
1.5000
1.4999
1.4998
1.4997
1.4996
1.4995
CL = 500pF
UNIT 2
ΔVIN = 0.3V
UNIT 1
UNIT 3
ΔVIN = -0.3V
-40 -30 -20-10 0 10 20 30 40
60 70 80
50
V
(V)
IN
1ms/DIV
FIGURE 6. LINE TRANSIENT RESPONSE, WITH
CAPACITIVE LOAD
FIGURE 5. V
vs TEMPERATURE NORMALIZED to
+25°C
OUT
900
700
CL = 0pF
ΔVIN = 0.3V
+25°C
500
300
100
0
-40°C
-100
-300
-500
ΔVIN = -0.3V
+85°C
-7 -6 -5 -4 -3 -2 -1
0
1
2
3
4
5
6
7
1ms/DIV
SINKING OUTPUT CURRENT
SOURCING
FIGURE 7. LINE TRANSIENT RESPONSE
FIGURE 8. LOAD REGULATION OVER-TEMPERATURE
FN6934.2
October 14, 2009
9
ISL21080
Typical Performance Characteristics Curves
V
= 1.5V, V = 3.0V, I = 0mA,
IN OUT
OUT
T = +25°C unless otherwise specified.
A
IL = 7mA
IL = 50μA
IL = -50μA
IL = -7mA
2ms/DIV
1ms/DIV
FIGURE 9. LOAD TRANSIENT RESPONSE
FIGURE 10. LOAD TRANSIENT RESPONSE
3.5
1.52
NO LOAD
3.0
2.5
2.0
1.5
1.0
0.5
0
1.50
1.48
1.46
1.44
1.42
1.40
1.38
VIN
7mA LOAD
UNIT 1
UNIT 3
UNIT 2
1.5
2.0 2.5
3.0 3.5
(V)
4.0 4.5
5.0 5.5
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
TIME (ms)
V
IN
FIGURE 12. TURN-ON TIME
FIGURE 11. DROPOUT
160
140
120
100
80
0
-10
-20
-30
-40
-50
-60
-70
NO LOAD
NO LOAD
1nF
1nF
10nF
10nF
60
40
100nF
20
100nF
10k
0
10
100
1k
100k
1M
1M
10
100
1k
10k
100k
FREQUENCY (Hz)
FREQUENCY (Hz)
FIGURE 14. PSRR vs FREQUENCY
FIGURE 13. Z
vs FREQUENCY
OUT
FN6934.2
October 14, 2009
10
ISL21080
High Current Application
1.502
1.502
1.500
1.498
1.496
1.494
1.492
V
= 5V
IN
V
= 5V
IN
1.500
1.498
1.496
1.494
1.492
V
= 3.5V
IN
V
= 3.5V
IN
V
= 3.3V
IN
V
= 3.3V
25
IN
35
0
5
10
15
20
(mA)
30
0
5
10
15
20
(mA)
25
30
35
I
I
LOAD
LOAD
FIGURE 15. DIFFERENT V
AT ROOM TEMPERATURE
FIGURE 16. DIFFERENT V
AT HIGH TEMPERATURE
IN
IN
(+85°C)
devices. Application circuits using battery power will
benefit greatly from having an accurate, stable
reference, which essentially presents no load to the
battery.
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).
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 17. 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.
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.
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.
TABLE 1. EXAMPLE OF BATTERY LIFE IN YEARS FOR
ISL21080 IN VARIOUS POWER ON
CONDITIONS WITH 1.5µA MAX CURRENT
BATTERY
RATING
(mAH)
50% DUTY 10% DUTY
Nanopower Operation
CONTINUOUS
CYCLE
CYCLE
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.
40
3
6
30*
225
16.3*
32.6*
163*
NOTE: *Typical Li-ion battery has a shelf life of up to 10
years.
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
FN6934.2
October 14, 2009
11
ISL21080
of 100µV to 1mV can be expected with Pb-free reflow
V
= +3.0V
IN
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.
10µF
0.01µF
V
IN
V
OUT
ISL21080
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.
GND
0.001µF TO 0.01µF
REF IN
ENABLE
SCK
SDAT
SERIAL
BUS
12 TO 24-BIT
A/D CONVERTER
Special Applications Considerations
FIGURE 17. REFERENCE INPUT FOR ADC CONVERTER
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 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.
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.
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
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.
V
OUT
+8V TO 28V
I
SET =
R
SET
I
= I
SET +
IR
SET
L
Noise Performance and Reduction
The output noise voltage in a 0.1Hz to 10Hz bandwidth is
typically 30µV . This is shown in the plot in the “Typical
Performance Characteristics Curves” which begin on
page 8. 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
V
P-P
IN
V
OUT
R
SET
0.01µF
10kΩ
0.1%
10ppm/°C
ISL21080-1.5
Z
> 100MΩ
OUT
V
= 1.5V
OUT
GND
I
~ 0.31µA
SY
is approximately 400µV
output, as shown in Figure 19. These noise
with no capacitance on the
P-P
I
SET
IL AT 0.1% ACCURACY
~150.3µA
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 19 also shows the noise in the 10kHz to 1MHz
FIGURE 18. ISL21080 USED AS A LOW COST
PRECISION CURRENT SOURCE
Board Assembly Considerations
band can be reduced to about 50µV
using a 0.001µF
P-P
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
FGA references provide high accuracy and low
temperature drift but some PC board assembly
precautions are necessary. Normal Output voltage shifts
FN6934.2
October 14, 2009
12
ISL21080
due to instability of the very low power amplifier with a
Turn-On Time
0.1µF capacitance load. For load capacitances above
0.001µF, the noise reduction network shown in Figure 20
is recommended. This network reduces noise
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 18.
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.
significantly over the full bandwidth. As shown in
Figure 19, noise is reduced to less than 40µV
1Hz to 1MHz using this network with a 0.01µF capacitor
from
P-P
and a 2kΩ resistor in series with a 10µF capacitor.
400
CL = 0
CL = 0.001µF
350
300
250
200
150
100
Temperature Coefficient
CL = 0.1µF
CL = 0.01µF AND 10µF + 2kΩ
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, (V
-
HIGH
V
), and divide by the temperature extremes of
LOW
measurement (T
the nominal reference voltage (at T = +25°C) and
multiplied by 10 to yield ppm/°C. This is the “Box”
– T ). The result is divided by
HIGH
LOW
6
50
0
method for specifying temperature coefficient.
1
10
100
1k
10k
100k
FIGURE 19. NOISE REDUCTION
V
= 3.0V
0.1µF
IN
V
10µF
IN
V
O
ISL21080
GND
2kΩ
0.01µF
10µF
FIGURE 20. NOISE REDUCTION NETWORK
Typical Application Circuits
V
= 3.0V
IN
R = 200Ω
2N2905
V
IN
V
2.5V/50mA
0.001µF
OUT
ISL21080
GND
FIGURE 21. PRECISION 2.5V 50mA REFERENCE
FN6934.2
October 14, 2009
13
ISL21080
Typical Application Circuits(Continued)
2.7V TO 5.5V
0.1µF
10µF
V
IN
V
OUT
ISL21080
GND
0.001µF
V
R
CC
V
H
OUT
X9119
+
–
SDA
SCL
2-WIRE BUS
V
OUT
(BUFFERED)
V
R
L
SS
FIGURE 22. 2.5V FULL SCALE LOW-DRIFT 10-BIT ADJUSTABLE VOLTAGE SOURCE
2.7V TO 5.5V
0.1µF
10µF
V
IN
+
V
SENSE
OUT
V
OUT
–
ISL21080
GND
LOAD
FIGURE 23. KELVIN SENSED LOAD
FN6934.2
October 14, 2009
14
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
10/14/09
FN6934.2
1. Removed "Coming Soon" on page 1 and 2 for -10, -20, -41, and -50 options.
2. Page 1. Moved "ISL21080-50
5.5V 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)
09/04/09
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 Voltage
To: Reference Output Voltage
1.25V, 1.5V, 2.500V, 3.300V
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
To: Initial Accuracy:
±0.5%
ISL21080-09 and -10
ISL21080-12
ISL21080-15
±0.7%
±0.6%
±0.5%
±0.3%
±0.2%
ISL21080-20 and -25
ISL21080-30, -33, -41, and -50
FROM: Input Voltage Range
ISL21080-12 (Coming Soon)
ISL21080-15
ISL21080-25 (Coming Soon)
ISL21080-33 (Coming Soon)
TO: Input Voltage Range:
2.7V to 5.5V
2.7V to 5.5V
2.7V to 5.5V
3.5V to 5.5V
ISL21080-09, -10, -12, -15, -20, and -25
ISL21080-09, -10, and 20 (Coming Soon)
ISL21080-30
2.7V to 5.5V
3.2V to 5.5V
3.5V to 5.5V
ISL21080-33
ISL21080-41 (Coming Soon)
Added: ISL21080-50 (Coming Soon)
4.5V to 8.0V
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
VOUT to GND (10s)
(ISL21080-41 and 50 only
-0.5V to +10V
-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.
07/28/09
FN6934.0
Initial Release.
FN6934.2
October 14, 2009
15
ISL21080
Products
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Company's products address some of the industry's fastest growing markets, such as, flat panel displays, cell phones,
handheld products, and notebooks. Intersil's product families address power management and analog signal
processing functions. Go to www.intersil.com/products for a complete list of Intersil product families.
*For a complete listing of Applications, Related Documentation and Related Parts, please see the respective device
information page on intersil.com: ISL21080
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FN6934.2
October 14, 2009
16
ISL21080
Package Outline Drawing
P3.064
3 LEAD SMALL OUTLINE TRANSISTOR PLASTIC PACKAGE (SOT23-3)
Rev 2, 9/09
4
2.92±0.12
DETAIL "A"
C
L
2.37±0.27
1.30±0.10
4
C
L
0.950
0.435±0.065
0.20 M C
0 - 8 deg.
TOP VIEW
10° TYP
(2 plcs)
0.25
0.91±0.03
GAUGE PLANE
1.00±0.12
SEATING PLANE
C
SEATING PLANE
0.10 C
0.31±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.
(1.25)
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.
(0.95 typ.)
TYPICAL RECOMMENDED LAND PATTERN
FN6934.2
October 14, 2009
17
相关型号：
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Ultra Low Noise, Precision Voltage Reference Output Current Capability 20mA
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