ISL21080CIH350Z-TK [INTERSIL]
300nA NanoPower Voltage References; 300nA的纳安级功耗电压参考
| 型号： | ISL21080CIH350Z-TK |
| 厂家： | 
Intersil |
| 描述： | 300nA NanoPower Voltage References |
| 文件： | 总21页 (文件大小：989K) |
| 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. . . . . . . . . . . . . . . . . . . . . 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”.
• Output Voltage Noise . . . . 30µV
P-P
(0.1Hz to 10Hz)
• 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)
Applications*(see page 20)
• Energy Harvesting Applications
• Wireless Sensor Network Applications
• Low Power Voltage Sources for Controllers, FPGA,
ASICs or Logic Devices
• Battery Management/Monitoring
• Low Power Standby Voltages
• Portable Instrumentation
Related Literature*(see page 20)
• See AN1494, “Reflow and PC Board Assembly Effects
on Intersil FGA References”
• Consumer/Medical Electronics
• Wearable Electronics
• See AN1533, “X-Ray Effects on Intersil FGA
References”
• Lower Cost Industrial and Instrumentation
• Power Regulation Circuits
• Control Loops and Compensation Networks
• LED/Diode Supply
500
UNIT 1
400
300
200
100
0
UNIT 2
UNIT 3
2.72.93.13.33.53.73.94.14.34.54.74.95.15.35.5
V
(V)
IN
FIGURE 1. I
vs V , 3 UNITS
IN
IN
May 25, 2010
FN6934.4
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, 2010. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1
ISL21080
Pin Configuration
Pin Descriptions
PIN NUMBER PIN NAME
ISL21080
(3 LD SOT-23)
TOP VIEW
DESCRIPTION
Input Voltage Connection.
Voltage Reference Output
Ground Connection
1
2
3
V
IN
V
OUT
1
2
V
IN
GND
3
GND
V
OUT
Ordering Information
PACKAGE
PART NUMBER
(Notes 1, 2)
PART
MARKING
V
OPTION
(V)
GRADE
(%)
TEMP. RANGE
(°C)
Tape & Reel
(Pb-Free)
PKG.
OUT
DWG. #
P3.064
P3.064
P3.064
P3.064
P3.064
P3.064
P3.064
P3.064
P3.064
P3.064
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
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.
FN6934.4
May 25, 2010
2
ISL21080
Absolute Maximum Ratings
Thermal Information
Max Voltage
Thermal Resistance (Typical, Notes 5, 6) θJA (°C/W)
3 Lead SOT-23. . . . . . . . . . . . . . . 275
Maximum Junction Temperature . . . . . . . . . . . . . . . +107°C
θ
JC (°C/W)
V
V
to GND. . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6.5V
to GND (ISL21080-41 and 50 only) . . .-0.5V to +10V
IN
IN
110
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
Continuous Power Dissipation (T = +85°C). . . . . . . . 99mW
A
Storage Temperature Range. . . . . . . . . . . -65°C to +150°C
Pb-Free Reflow Profile (Note 7). . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
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
Recommended Operating Conditions
Temperature. . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . .2.7V to 5.5V
Environmental Operating Conditions
X-Ray Exposure (Note 4). . . . . . . . . . . . . . . . . . . .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:
4. 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.
5. θJA 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 θ , the “case temp” location is taken at the package top center.
JC
7. 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.
8. 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, V
= 0.9V) V = 3.0V, T = -40°C to +85°C, I = 0, unless otherwise
IN OUT
OUT
A
specified. Boldface limits apply over the operating temperature range, -40°C to
+85°C.
MIN
MAX
PARAMETER
DESCRIPTION
Output Voltage
Accuracy @ T = +25°C (Notes 7, 8)
CONDITIONS
(Note 12) TYP (Note 12) UNIT
V
V
0.9
V
%
OUT
OA
V
-0.7
+0.7
50
OUT
A
TC V
Output Voltage Temperature Coefficient
(Note 9)
ppm/°C
OUT
V
Input Voltage Range
Supply Current
2.0
5.5
1.5
V
µA
IN
I
0.35
30
6
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
2V < V < 5.5V
350
100
350
µV/V
µV/mA
µV/mA
mA
OUT
IN
IN
/ΔI
OUT OUT
Sourcing: 0mA ≤ I
≤ 10mA
≤ 0mA
OUT
Sinking: -10mA ≤ I
OUT
23
30
1
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
T = +25°C, V
tied to GND
= ±0.1% with no load
OUT
SC
A
OUT
t
V
ms
R
f = 120Hz
-40
40
10
1.1
100
60
dB
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 10)
Long Term Stability (Note 11)
ΔT = +125°C
A
OUT
OUT
A
/Δt
T = +25°C
ppm
A
FN6934.4
May 25, 2010
3
ISL21080
Electrical Specifications (ISL21080-10, V
= 1.024V) V = 3.0V, T = -40°C to +85°C, I
specified. Boldface limits apply over the operating temperature range,
= 0, unless otherwise
OUT
IN
A
OUT
-40°C to +85°C.
MIN
MAX
PARAMETER
DESCRIPTION
Output Voltage
Accuracy @ T = +25°C (Notes 7, 8)
CONDITIONS
(Note 12) TYP (Note 12)
UNIT
V
V
V
1.024
OUT
OA
V
-0.7
+0.7
50
%
OUT
A
TC V
Output Voltage Temperature Coefficient
(Note 9)
ppm/°C
OUT
V
Input Voltage Range
Supply Current
2.7
5.5
1.5
V
µA
IN
I
0.31
80
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
2.7V < V < 5.5V
350
100
350
µV/V
µV/mA
µV/mA
mA
OUT
OUT
IN
IN
/ΔI
Sourcing: 0mA ≤ I
≤ 7mA
≤ 0mA
25
OUT
OUT
Sinking: -7mA ≤ I
T = +25°C, V
50
OUT
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
tied to GND
50
SC
A
OUT
= ±0.1% with no load
OUT
t
V
4
ms
R
f = 120Hz
-40
30
dB
e
Output Voltage Noise
Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
µV
P-P
N
V
52
µV
RMS
N
2.2
100
50
µV/√Hz
ppm
ΔV
ΔV
/ΔT
Thermal Hysteresis (Note 10)
Long Term Stability (Note 11)
ΔT = +165°C
A
OUT
A
/Δt
T = +25°C
ppm
OUT
A
Electrical Specifications (ISL21080-12, V
= 1.25V) V = 3.0V, T = -40°C to +85°C, I = 0, unless otherwise
IN OUT
OUT
A
specified. Boldface limits apply over the operating temperature range, -40°C to
+85°C.
MIN
MAX
PARAMETER
DESCRIPTION
Output Voltage
Accuracy @ T = +25°C (Notes 7, 8)
CONDITIONS
(Note 12) TYP (Note 12)
UNIT
V
V
V
1.25
OUT
OA
V
-0.6
+0.6
50
%
OUT
A
TC V
Output Voltage Temperature Coefficient
(Note 9)
ppm/°C
OUT
V
Input Voltage Range
Supply Current
2.7
5.5
1.5
V
µA
IN
I
0.31
80
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
2.7V < V < 5.5V
350
100
350
µV/V
µV/mA
µV/mA
mA
OUT
OUT
IN
IN
/ΔI
Sourcing: 0mA ≤ I
≤ 7mA
≤ 0mA
25
OUT
OUT
Sinking: -7mA ≤ I
50
OUT
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
T = +25°C, V
tied to GND
50
SC
A
OUT
= ±0.1% with no load
OUT
t
V
4
ms
R
f = 120Hz
-40
30
dB
e
Output Voltage Noise
Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
µV
P-P
N
V
52
µV
RMS
N
1.1
100
50
µV/√Hz
ppm
ΔV
ΔV
/ΔT
Thermal Hysteresis (Note 10)
Long Term Stability (Note 11)
ΔT = +165°C
A
OUT
OUT
A
/Δt
T = +25°C
ppm
A
FN6934.4
May 25, 2010
4
ISL21080
Electrical Specifications (ISL21080-15, V
= 1.5V) V = 3.0V, T = -40°C to +85°C, I
specified. Boldface limits apply over the operating temperature range, -40°C to
= 0, unless otherwise
OUT
IN
A
OUT
+85°C.
MIN
MAX
PARAMETER
DESCRIPTION
Output Voltage
Accuracy @ T = +25°C (Notes 7, 8)
CONDITIONS
(Note 12) TYP (Note 12)
UNIT
V
V
V
1.5
OUT
OA
V
-0.5
+0.5
%
OUT
A
TC V
Output Voltage Temperature Coefficient
(Note 9)
50
ppm/°C
OUT
V
Input Voltage Range
Supply Current
2.7
5.5
1.5
V
µA
IN
I
0.31
80
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
2.7V < V < 5.5V
350
100
350
µV/V
µV/mA
µV/mA
mA
OUT
OUT
IN
IN
/ΔI
Sourcing: 0mA ≤ I
≤ 7mA
≤ 0mA
10
OUT
OUT
Sinking: -7mA ≤ I
50
OUT
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
T = +25°C, V
tied to GND
50
SC
A
OUT
= ±0.1% with no load
OUT
t
V
4
ms
R
f = 120Hz
-40
30
dB
e
Output Voltage Noise
Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
µV
P-P
N
V
52
µV
RMS
N
1.1
100
50
µV/√Hz
ppm
ΔV
ΔV
/ΔT
Thermal Hysteresis (Note 10)
Long Term Stability (Note 11)
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
specified. Boldface limits apply over the operating temperature range,
= 0, unless otherwise
OUT
OUT
IN
A
-40°C to +85°C.
MIN
MAX
PARAMETER
DESCRIPTION
Output Voltage
Accuracy @ T = +25°C (Notes 7, 8)
CONDITIONS
(Note 12) TYP (Note 12)
UNIT
V
V
V
2.048
OUT
OA
V
-0.3
+0.3
%
OUT
A
TC V
Output Voltage Temperature Coefficient
(Note 9)
50
ppm/°C
OUT
V
Input Voltage Range
Supply Current
2.7
5.5
1.5
V
µA
IN
I
0.31
80
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
2.7V < V < 5.5V
350
100
350
µV/V
µV/mA
µV/mA
mA
OUT
OUT
IN
IN
/ΔI
Sourcing: 0mA ≤ I
≤ 7mA
≤ 0mA
25
OUT
OUT
Sinking: -7mA ≤ I
50
OUT
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
T = +25°C, V
tied to GND
50
SC
A
OUT
= ±0.1% with no load
OUT
t
V
4
ms
R
f = 120Hz
-40
30
dB
e
Output Voltage Noise
Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
µV
P-P
N
V
52
µV
RMS
N
1.1
100
50
µV/√Hz
ppm
ΔV
ΔV
/ΔT
Thermal Hysteresis (Note 10)
Long Term Stability (Note 11)
ΔT = +165°C
A
OUT
OUT
A
/Δt
T = +25°C
ppm
A
FN6934.4
May 25, 2010
5
ISL21080
Electrical Specifications (ISL21080-25, V
= 2.5V) V = 3.0V, T = -40°C to +85°C, I
specified. Boldface limits apply over the operating temperature range, -40°C to
= 0, unless otherwise
OUT
OUT
IN
A
+85°C.
MIN
MAX
PARAMETER
DESCRIPTION
Output Voltage
Accuracy @ T = +25°C (Notes 7, 8)
CONDITIONS
(Note 12) TYP (Note 12)
UNIT
V
V
V
2.5
OUT
OA
V
-0.3
+0.3
50
%
OUT
A
TC V
Output Voltage Temperature Coefficient
(Note 9)
ppm/°C
OUT
V
Input Voltage Range
Supply Current
2.7
5.5
1.5
V
µA
IN
I
0.31
80
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
2.7V < V < 5.5V
350
100
350
µV/V
µV/mA
µV/mA
mA
OUT
OUT
IN
IN
/ΔI
Sourcing: 0mA ≤ I
≤ 7mA
≤ 0mA
25
OUT
OUT
Sinking: -7mA ≤ I
50
OUT
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
T = +25°C, V
tied to GND
50
SC
A
OUT
= ±0.1% with no load
OUT
t
V
4
ms
R
f = 120Hz
-40
30
dB
e
Output Voltage Noise
Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
µV
P-P
N
V
52
µV
RMS
N
1.1
100
50
µV/√Hz
ppm
ΔV
ΔV
/ΔT
Thermal Hysteresis (Note 10)
Long Term Stability (Note 11)
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
IN
= 0, unless otherwise
OUT
OUT
A
specified. Boldface limits apply over the operating temperature range, -40°C to
+85°C.
MIN
MAX
PARAMETER
DESCRIPTION
Output Voltage
Accuracy @ T = +25°C (Notes 7, 8)
CONDITIONS
(Note 12) TYP (Note 12)
UNIT
V
V
V
3.0
OUT
OA
V
-0.2
+0.2
%
OUT
A
TC V
Output Voltage Temperature Coefficient
(Note 9)
50
ppm/°C
OUT
V
Input Voltage Range
Supply Current
3.2
5.5
1.5
V
µA
IN
I
0.31
80
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
3.2V < V < 5.5V
350
100
350
µV/V
µV/mA
µV/mA
mA
OUT
OUT
IN
IN
/ΔI
Sourcing: 0mA ≤ I
≤ 7mA
≤ 0mA
25
OUT
OUT
Sinking: -7mA ≤ I
T = +25°C, V
50
OUT
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
tied to GND
50
SC
A
OUT
= ±0.1% with no load
OUT
t
V
4
ms
R
f = 120Hz
-40
30
dB
e
Output Voltage Noise
Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
µV
P-P
N
V
52
µV
RMS
N
1.1
100
50
µV/√Hz
ppm
ΔV
ΔV
/ΔT
Thermal Hysteresis (Note 10)
Long Term Stability (Note 11)
ΔT = +165°C
A
OUT
A
/Δt
T = +25°C
ppm
OUT
A
FN6934.4
May 25, 2010
6
ISL21080
Electrical Specifications (ISL21080-33, V
= 3.3V) V = 5.0V, T = -40°C to +85°C, I
specified. Boldface limits apply over the operating temperature range, -40°C to
= 0, unless otherwise
OUT
OUT
IN
A
+85°C.
MIN
MAX
PARAMETER
DESCRIPTION
Output Voltage
Accuracy @ T = +25°C (Notes 7, 8)
CONDITIONS
(Note 12) TYP (Note 12)
UNIT
V
V
V
3.3
OUT
OA
V
-0.2
+0.2
50
%
OUT
A
TC V
Output Voltage Temperature Coefficient
(Note 9)
ppm/°C
OUT
V
Input Voltage Range
Supply Current
3.5
5.5
1.5
V
µA
IN
I
0.31
80
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
3.5 V < V < 5.5V
IN
350
100
350
µV/V
µV/mA
µV/mA
mA
OUT
OUT
IN
/ΔI
Sourcing: 0mA ≤ I
OUT
≤ 10mA
≤ 0mA
25
OUT
Sinking: -10mA ≤ I
OUT
50
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
T = +25°C, V
tied to GND
= ±0.1% with no load
OUT
50
SC
A
OUT
t
V
4
ms
R
f = 120Hz
-40
30
dB
e
Output Voltage Noise
Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
µV
P-P
N
V
52
µV
RMS
N
1.1
100
50
µV/√Hz
ppm
ΔV
ΔV
/ΔT
Thermal Hysteresis (Note 10)
Long Term Stability (Note 11)
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
specified. Boldface limits apply over the operating temperature range,
= 0, unless otherwise
OUT
OUT
IN
A
-40°C to +85°C.
MIN
MAX
PARAMETER
DESCRIPTION
Output Voltage
Accuracy @ T = +25°C(Notes 7, 8)
CONDITIONS
(Note 12) TYP (Note 12)
UNIT
V
V
V
4.096
OUT
OA
V
-0.2
+0.2
%
OUT
A
TC V
Output Voltage Temperature
Coefficient (Note 9)
50
ppm/°C
OUT
V
Input Voltage Range
Supply Current
4.5
8.0
1.5
V
µA
IN
I
0.5
80
10
20
80
4
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
4.5 V < V < 8.0V
IN
350
100
350
µV/V
µV/mA
µV/mA
mA
OUT
OUT
IN
/ΔI
Sourcing: 0mA ≤ I
OUT
≤ 10mA
≤ 0mA
OUT
Sinking: -10mA ≤ I
OUT
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
T = +25°C, V
tied to GND
SC
A
OUT
= ±0.1% with no load
OUT
t
V
ms
R
f = 120Hz
-40
30
52
1.1
100
50
dB
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 10)
Long Term Stability (Note 11)
ΔT = +165°C
A
OUT
A
/Δt
T = +25°C
ppm
OUT
A
FN6934.4
May 25, 2010
7
ISL21080
Electrical Specifications (ISL21080-50 V
= 5.0V) V = 6.5V, T = -40°C to +85°C, I
specified. Boldface limits apply over the operating temperature range, -40°C to
= 0, unless otherwise
OUT
OUT
IN
A
+85°C.
MIN
MAX
PARAMETER
DESCRIPTION
Output Voltage
Accuracy @ T = +25°C (Notes 7, 8)
CONDITIONS
(Note 12) TYP (Note 12) UNIT
V
V
5.0
V
%
OUT
OA
V
-0.2
+0.2
OUT
A
TC V
Output Voltage Temperature Coefficient
(Note 9)
50
ppm/°C
OUT
V
Input Voltage Range
Supply Current
5.5
8.0
1.5
V
µA
IN
I
0.5
80
10
20
80
4
IN
ΔV
ΔV
/ΔV
Line Regulation
Load Regulation
5.5 V < V < 8.0V
IN
350
100
350
µV/V
µV/mA
µV/mA
mA
OUT
OUT
IN
/ΔI
Sourcing: 0mA ≤ I
OUT
≤ 10mA
≤ 0mA
OUT
Sinking: -10mA ≤ I
OUT
I
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
T = +25°C, V
tied to GND
= ±0.1% with no load
OUT
SC
A
OUT
t
V
ms
R
f = 120Hz
-40
30
52
1.1
100
50
dB
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 10)
Long Term Stability (Note 11)
ΔT = +165°C
A
OUT
OUT
A
/Δt
T = +25°C
ppm
A
NOTES:
9. Over the specified temperature range. Temperature coefficient is measured by the box method whereby the change in V
divided by the temperature range; in this case, -40°C to +85°C = +125°C.
is
OUT
10. 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 is
A
OUT
reading is then expressed in ppm. For Δ
taken at +25°C. The difference between the initial V
reading and the second V
OUT
OUT
T = +125°C, the device under test is cycled from +25°C to +85°C to -40°C to +25°C.
A
11. Long term drift is logarithmic in nature and diminishes over time. Drift after the first 1000 hours will be approximately
10ppm/√1khrs.
12. 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
V
= 0.9V, V = 3.0V, I = 0mA,
IN OUT
OUT
T = +25°C unless otherwise specified.
A
0.6
0.5
0.4
0.3
0.2
0.1
0
0.6
0.5
0.4
0.3
0.2
0.1
0
HIGH
+85°C
TYP
+25°C
-40°C
LOW
2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2
(V)
2.0 2.4 2.8 3.2 3.6
4.0 4.4 4.8 5.2
(V)
V
V
IN
IN
FIGURE 3. I
vs V OVER-TEMPERATURE
IN
FIGURE 2. I
vs V , 3 UNITS
IN
IN
IN
FN6934.4
May 25, 2010
8
ISL21080
Typical Performance Characteristics Curves
V
= 0.9V, V = 3.0V, I = 0mA,
IN OUT
OUT
T = +25°C unless otherwise specified.
A
0.90020
0.90015
0.90010
0.90005
0.90000
0.89995
0.89990
0.89985
0.89980
200
150
100
50
LOW
+85°C
HIGH
0
TYP
-50
-100
-150
+25°C
-40°C
2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2
(V)
2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2
(V)
V
V
IN
IN
FIGURE 5. LINE REGULATION OVER-TEMPERATURE
FIGURE 4. LINE REGULATION, 3 UNITS
200
150
100
0.9010
LOW
0.9005
0.9000
ΔV
= +0.3V
IN
TYP
50
0
HIGH
-50
-100
ΔV
IN
= -0.3V
0.8995
0.8990
-150
-200
0
0.5
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
TIME (µs)
1.0
-40 -30-20 -10 0 10 20 30 40 50 60 70 80
TEMPERATURE (°C)
FIGURE 7. LINE TRANSIENT RESPONSE, WITH
CAPACITIVE LOAD
FIGURE 6. V
vs TEMPERATURE NORMALIZED to
OUT
+25°C
200
150
100
50
500
ΔV
IN
= +0.3V
+85°C
0
0
-40°C
-50
ΔV
IN
= -0.3V
-100
+25°C
-150
-200
-500
-10-9-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
TIME (µs)
SINKING
SOURCING
LOAD (mA)
FIGURE 8. LINE TRANSIENT RESPONSE
FIGURE 9. LOAD REGULATION OVER-TEMPERATURE
FN6934.4
May 25, 2010
9
ISL21080
Typical Performance Characteristics Curves
V
= 0.9V, V = 3.0V, I = 0mA,
IN OUT
OUT
T = +25°C unless otherwise specified.
A
500
400
300
200
100
0
1000
800
I
= +7mA
LOAD
I
= +50µA
LOAD
600
400
200
0
-100
-200
-300
-400
-500
-200
-400
-600
-800
-1000
I
= -50µA
LOAD
3
I
= -7mA
LOAD
3
0
1
2
4
5
6
7
8
9
10
0
1
2
4
5
6
7
8
9
10
TIME (ms)
TIME (ms)
FIGURE 10. LOAD TRANSIENT RESPONSE
FIGURE 11. LOAD TRANSIENT RESPONSE
3.5
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
3.0
2.5
2.0
1.5
1.0
0.5
0
NO LOAD
7mA
LOW
HIGH
VDD
TYP
0
0.3
0.6
0.9
TIME (ms)
1.2
1.5
1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0
(V)
V
IN
FIGURE 13. TURN-ON TIME
FIGURE 12. DROPOUT
Typical Performance Characteristics Curves
V
= 1.5V, V = 3.0V, I
IN OUT
= 0mA,
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
3.1
3.5
3.9
V
4.3
(V)
4.7
5.1
5.5
2.7
3.1
3.5
3.9
4.3
(V)
4.7
5.1
5.5
V
IN
IN
FIGURE 15. I
vs V
OVER-TEMPERATURE
IN
FIGURE 14. I
vs V , 3 UNITS
IN
IN
IN
FN6934.4
May 25, 2010
10
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
2.7
3.1
3.5
3.9
V
4.3
(V)
4.7
5.1
5.5
2.7
3.1
3.5
3.9
V
4.3
(V)
4.7
5.1
5.5
IN
IN
FIGURE 17. LINE REGULATION OVER-TEMPERATURE
FIGURE 16. LINE REGULATION, 3 UNITS
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 19. LINE TRANSIENT RESPONSE, WITH
CAPACITIVE LOAD
FIGURE 18. V
vs TEMPERATURE NORMALIZED to
OUT
+25°C
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 20. LINE TRANSIENT RESPONSE
FIGURE 21. LOAD REGULATION OVER-TEMPERATURE
FN6934.4
May 25, 2010
11
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 22. LOAD TRANSIENT RESPONSE
FIGURE 23. 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 25. TURN-ON TIME
FIGURE 24. 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 27. PSRR vs FREQUENCY
FIGURE 26. Z
vs FREQUENCY
OUT
FN6934.4
May 25, 2010
12
ISL21080
Typical Performance Characteristics Curves T = +25°C unless otherwise specified.
A
1.6
1.6
NO LOAD
7mA
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
7mA
NO LOAD
1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0
(V)
1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9
(V)
V
V
IN
IN
FIGURE 28. DROPOUT, ISL21080-10
FIGURE 29. DROPOUT, ISL21080-12
3.3
3.2
3.1
3.0
2.9
2.8
2.7
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
NO LOAD
7mA
NO LOAD
7mA
3.0
3.2
3.4
3.6
(V)
3.8
4.0
2.5
2.7
2.9
3.1
(V)
3.3
3.5
V
V
IN
IN
FIGURE 31. DROPOUT, ISL21080-30
FIGURE 30. DROPOUT, ISL21080-25
3.6
3.5
3.4
3.3
3.2
3.1
3.0
4.3
4.2
4.1
4.0
3.9
3.8
3.7
NO LOAD
7mA
NO LOAD
7mA
3.3
3.5
3.7
3.9
(V)
4.1
4.3
4.5
4.1
4.3
4.5
V
4.7
(V)
4.9
5.1
V
IN
IN
FIGURE 33. DROPOUT, ISL21080-41
FIGURE 32. DROPOUT, ISL21080-33
FN6934.4
May 25, 2010
13
ISL21080
Typical Performance Characteristics Curves T = +25°C unless otherwise specified.
A
5.3
NO LOAD
7mA
5.2
5.1
5.0
4.9
4.8
4.7
5.0
5.2
5.4
5.6
(V)
5.8
6.0
V
IN
FIGURE 34. DROPOUT, ISL21080-50
High Current Application
1.502
1.500
1.498
1.496
1.494
1.492
1.502
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 35. DIFFERENT V
AT ROOM TEMPERATURE
FIGURE 36. DIFFERENT V
AT HIGH TEMPERATURE
IN
IN
(+85°C)
output noise level and load regulation due to the MOS
device characteristics. These limitations are addressed with
circuit techniques discussed in other sections.
Applications Information
FGA Technology
Board Assembly Considerations
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).
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.
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
FN6934.4
May 25, 2010
14
ISL21080
Special Applications Considerations
TABLE 1. EXAMPLE OF BATTERY LIFE IN YEARS FOR
ISL21080 IN VARIOUS POWER ON
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.
CONDITIONS WITH 1.5µA MAX CURRENT
BATTERY RATING
50%DUTY 10% DUTY
(mAH)
CONTINUOUS
CYCLE
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.
V
= +3.0V
IN
10µF
0.01µF
V
IN
V
OUT
ISL21080
GND
0.001µF TO 0.01µF
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.
REF IN
ENABLE
SCK
SDAT
SERIAL
BUS
12 TO 24-BIT
A/D CONVERTER
Nanopower Operation
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.
FIGURE 37. REFERENCE INPUT FOR ADC CONVERTER
ISL21080 Used as a Low Cost Precision
Current Source
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.
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.
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.
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.
FN6934.4
May 25, 2010
15
ISL21080
Turn-On Time
V
OUT
+8V TO 28V
I
SET =
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.
R
SET
I
= I
SET +
IR
SET
L
V
IN
V
OUT
R
SET
0.01µF
10kΩ
0.1%
10ppm/°C
ISL21080-1.5
Z
> 100MΩ
OUT
V
= 1.5V
OUT
Temperature Coefficient
GND
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
I
~ 0.31µA
SY
I
SET
IL AT 0.1% ACCURACY
~150.3µA
at two temperatures, take the total variation, (V
-
HIGH
V
), and divide by the temperature extremes of
FIGURE 38. ISL21080 USED AS A LOW COST
PRECISION CURRENT SOURCE
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
LOW
HIGH
6
Noise Performance and Reduction
method for specifying temperature coefficient.
The output noise voltage in a 0.1Hz to 10Hz bandwidth is
400
typically 30µV . This is shown in the plot in the “Typical
P-P
CL = 0
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
CL = 0.001µF
350
300
250
200
150
100
CL = 0.1µF
CL = 0.01µF AND 10µF + 2kΩ
is approximately 400µV
output, as shown in Figure 39. These noise
with no capacitance on the
P-P
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
50
0
1
10
100
1k
10k
100k
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
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
FIGURE 39. NOISE REDUCTION
V
= 3.0V
0.1µF
IN
V
10µF
IN
V
O
ISL21080
significantly over the full bandwidth. As shown in
GND
2kΩ
Figure 39, noise is reduced to less than 40µV
1Hz to 1MHz using this network with a 0.01µF capacitor
from
P-P
0.01µF
10µF
and a 2kΩ resistor in series with a 10µF capacitor.
FIGURE 40. NOISE REDUCTION NETWORK
FN6934.4
May 25, 2010
16
ISL21080
Typical Application Circuits
V
= 3.0V
IN
R = 200Ω
2N2905
V
IN
V
2.5V/50mA
0.001µF
OUT
ISL21080
GND
FIGURE 41. PRECISION 2.5V 50mA REFERENCE
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 42. 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 43. KELVIN SENSED LOAD
FN6934.4
May 25, 2010
17
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
5/12/10
FN6934.4
Changed Theta JA in the “Thermal Information” on page 3 from 170 to 275. Added Theta JC
and applicable note.
4/29/10
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.
4/14/10
4/6/10
Corrected y axis label on Figure 9 from “V
OUT
(V)” to “V
(µV)”
OUT
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
ΔT in Thermal Hysterisis conditions of 0.9V option changed from 165°C to 125°C
A
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 8 on
page 3.
4/1/10
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.
3/25/10
Throughout- Converted to new format. Changes made as follows:
Moved “Pin Configuration” and “Pin Descriptions” to page 2
Added “Related Literature*(see page 20)” 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 12 to MIN MAX columns of all
Electrical Specifications tables.
Added ““Environmental Operating Conditions” to page 3 and added Note 4
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
FN6934.4
May 25, 2010
18
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. (Continued)
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.
FN6934.4
May 25, 2010
19
ISL21080
Products
Intersil Corporation is a leader in the design and manufacture of high-performance analog semiconductors. The
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
To report errors or suggestions for this datasheet, please go to www.intersil.com/askourstaff
FITs are available from our website at http://rel.intersil.com/reports/search.php
For additional products, see www.intersil.com/product_tree
Intersil products are manufactured, assembled and tested utilizing ISO9000 quality systems as noted
in the quality certifications found at www.intersil.com/design/quality
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 parties which may result from its use. No license is granted by implication or otherwise under any
patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
FN6934.4
May 25, 2010
20
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
FN6934.4
May 25, 2010
21
相关型号：
ISL21090BFB825Z-TK
Ultra Low Noise, Precision Voltage Reference Output Current Capability 20mA
INTERSIL
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