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PDF ISL21080 Data sheet ( Hoja de datos )
| Número de pieza | ISL21080 | |
| Descripción | 300nA NanoPower Voltage References | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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300nA NanoPower Voltage References
ISL21080
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.
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.
Pin Configuration
ISL21080
(3 LD SOT-23)
TOP VIEW
VIN 1
VOUT 2
3 GND
Pin Descriptions
PIN
NUMBER
1
2
3
PIN NAME
DESCRIPTION
VIN
VOUT
GND
Input Voltage Connection.
Voltage Reference Output
Ground Connection
Features
• 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:
- 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%
• 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
• Output Voltage Noise . . . 30µVP-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
• 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
• 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
1 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 page  
ISL21080
Electrical Specifications (ISL21080-15, VOUT = 1.5V) VIN = 3.0V, TA = -40°C to +85°C, IOUwTw=w.0D,autanSlehseseot4thUe.crowmise
specified. (Continued)
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
TC VOUT
Output Voltage Temperature Coefficient
(Note 7)
50 ppm/°C
VIN
IIN
ΔVOUT /ΔVIN
ΔVOUT/ΔIOUT
Input Voltage Range
Supply Current
Line Regulation
Load Regulation
ISC Short Circuit Current
tR Turn-on Settling Time
Ripple Rejection
2.7
2.7 V < VIN < 5.5V
Sourcing: 0mA ≤ IOUT ≤ 7mA
Sinking: -7mA ≤ IOUT ≤ 0mA
TA = +25°C, VOUT tied to GND
VOUT = ±0.1% with no load
f = 120Hz
5.5
0.31 1.5
80 350
10 100
50 350
50
4
-30
V
µA
µV/V
µV/mA
µV/mA
mA
ms
dB
eN Output Voltage Noise
VN Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
30 µVP-P
52 µVRMS
1.1 µV/√Hz
ΔVOUT/ΔTA
ΔVOUT/Δt
Thermal Hysteresis (Note 8)
Long Term Stability (Note 9)
ΔTA = +165°C
TA = +25°C
100 ppm
50 ppm
Electrical Specifications (ISL21080-20, VOUT = 2.048V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless
otherwise specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
VOUT
VOA
TC VOUT
Output Voltage
VOUT Accuracy @ TA = +25°C (Notes 5, 6)
Output Voltage Temperature Coefficient
(Note 7)
2.048
V
-0.3
+0.3 %
50 ppm/°C
VIN
IIN
ΔVOUT /ΔVIN
ΔVOUT/ΔIOUT
Input Voltage Range
Supply Current
Line Regulation
Load Regulation
ISC Short Circuit Current
tR Turn-on Settling Time
Ripple Rejection
2.7
2.7 V < VIN < 5.5V
Sourcing: 0mA ≤ IOUT ≤ 7mA
Sinking: -7mA ≤ IOUT ≤ 0mA
TA = +25°C, VOUT tied to GND
VOUT = ±0.1% with no load
f = 120Hz
5.5 V
0.31 1.5
µA
80 350 µV/V
25 100 µV/mA
50 350 µV/mA
50 mA
4 ms
-30 dB
eN Output Voltage Noise
VN Broadband Voltage Noise
Noise Density
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
f = 1kHz
30 µVP-P
52 µVRMS
1.1 µV/√Hz
ΔVOUT/ΔTA
ΔVOUT/Δt
Thermal Hysteresis (Note 8)
Long Term Stability (Note 9)
ΔTA = +165°C
TA = +25°C
100 ppm
50 ppm
Electrical Specifications (ISL21080-25, VOUT = 2.5V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
VOUT
VOA
Output Voltage
VOUT Accuracy @ TA = +25°C (Notes 5, 6)
2.5
-0.3
+0.3
V
%
5 FN6934.2
October 14, 2009
5 Page 
High Current Application
1.502
VIN = 5V
1.500
ISL21080
1.502
1.500
www.DataSheet4U.com
VIN = 5V
1.498
1.496
1.494
VIN = 3.5V
VIN = 3.3V
1.498
1.496
1.494
VIN = 3.5V
VIN = 3.3V
1.4920 5 10 15 20 25 30 35
ILOAD (mA)
FIGURE 15. DIFFERENT VIN AT ROOM TEMPERATURE
1.492
0
5 10 15 20 25 30 35
ILOAD (mA)
FIGURE 16. DIFFERENT VIN AT HIGH TEMPERATURE
(+85°C)
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.
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.
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 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.
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
CONTINUOUS 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.
11 FN6934.2
October 14, 2009
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet ISL21080.PDF ] | |
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