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ISL21070 데이터시트 PDF




Intersil에서 제조한 전자 부품 ISL21070은 전자 산업 및 응용 분야에서
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부품번호 ISL21070 기능
기능 25uA Micropower Voltage References
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ISL21070 데이터시트, 핀배열, 회로
DATASHEET
25µA Micropower Voltage References
ISL21070
The ISL21070 voltage references are analog voltage
references featuring low supply voltage operation at ultra-low
25µA max operating current.
Additionally, the ISL21070 family features guaranteed initial
accuracy as low as ±0.2% and 30ppm/°C temperature
coefficient.
These references are ideal for general purpose applications for
performance at lower cost. The ISL21070 is provided in an
industry standard 3 Ld SOT-23 pinout.
The ISL21070 offers output voltages that can be used as
precision voltage sources for control loops, standby voltages
for low power states for DSP, FPGA, Data path Controllers,
Microcontrollers and other core voltages: 0.600V, 2.048V, and
2.5V.
Applications
• 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
Features
• Reference output voltage . . . . . . . . . 0.600V, 2.048V, 2.500V
• Initial accuracy: 0.600V. . . . . . . . . . . . . . . . . . . . . . . . . . ±1.0%
• Initial accuracy: 2.048V. . . . . . . . . . . . . . . . . . . . . . . . .±0.25%
• Initial accuracy: 2.5V . . . . . . . . . . . . . . . . . . . . . . . . . . . ..±0.2%
• Input voltage range
- ISL21070-06 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
- ISL21070-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
- ISL21070-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
• Output voltage noise . . . . . . . . . . . . . 30µVP-P (0.1Hz to 10Hz)
• Supply current . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25µA (max)
• Tempco (0.600V only) . . . . . . . . . . . . . . . . . . . . . . . 50ppm/°C
• Tempco (all others) . . . . . . . . . . . . . . . . . . . . . . . . . 30ppm/°C
• Output current capability . . . . . . . . . . . . . . . . . . . . . . . ±10mA
• Operating temperature range. . . . . . . . . . . . . -40°C to +85°C
• Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Ld SOT-23
• Pb-Free (RoHS compliant)
Related Literature
AN1533, “X-Ray Effects on Intersil FGA References”
AN1494, “Reflow and PC Board Assembly Effects on Intersil
FGA References”
2.5020
2.5015
2.5010
TYP
2.5005
2.5000
2.4995
LOW
2.4990
-40 -30 -20 -10 0
HIGH
10 20 30 40 50 60 70 80
TEMPERATURE (°C)
FIGURE 1. VOUT vs TEMPERATURE NORMALIZED to +25°C
September 3, 2015
FN7599.3
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 2010, 2011, 2014, 2015. 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.




ISL21070 pdf, 반도체, 판매, 대치품
ISL21070
Electrical Specifications (ISL21070-20, 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
SYMBOL
VOUT
VOA
TC VOUT
VIN
IIN
VOUT/VIN
VOUT/IOUT
PARAMETER
Output Voltage
VOUT Accuracy @ TA = +25°C
Output Voltage Temperature Coefficient
(Note 9)
Input Voltage Range
Supply Current
Line Regulation
Load Regulation
ISC
tR
eN
VN
VOUT/TA
VOUT/t
Short Circuit Current
Turn-on Settling Time
Ripple Rejection
Output Voltage Noise
Broadband Voltage Noise
Thermal Hysteresis (Note 10)
Long Term Stability (Note 11)
CONDITIONS
ISL21070 C-grade: 2.048
ISL21070 C-grade
2.7V < VIN < 5.5V
Sourcing: 0mA IOUT 10mA
Sinking: -10mA IOUT 0mA
TA = +25°C, VOUT tied to GND
VOUT = ±0.1%
f = 10kHz
0.1Hz f 10Hz
10Hz f 10kHz
TA = +125°C
TA = +25°C
MIN
(Note 12)
-0.25
TYP
2.048
MAX
(Note 12)
+0.25
30
UNIT
V
%
ppm/°C
2.7 5.5 V
11 25
µA
25 250
µV/V
3 100 µV/mA
6 100 µV/mA
50 mA
150 µs
-20 dB
30 µVP-P
10 µVRMS
40 ppm
50 ppm
Electrical Specifications (ISL21070-25, 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.
SYMBOL
PARAMETER
CONDITIONS
MIN MAX
(Note 12) TYP (Note 12)
UNIT
VOUT
VOA
TC VOUT
Output Voltage
VOUT Accuracy @ TA = +25°C
Output Voltage Temperature
Coefficient (Note 9)
ISL21070 C-grade
ISL21070 C-grade
2.5 V
-0.2
+0.2
%
30 ppm/°C
VIN
IIN
VOUT/VIN
VOUT/IOUT
Input Voltage Range
Supply Current
Line Regulation
Load Regulation
ISC Short Circuit Current
tR Turn-on Settling Time
Ripple Rejection
VEN = VIN
2.7V < VIN < 5.5V
Sourcing: 0mA IOUT 7mA
Sourcing: 0mA IOUT 10mA
(TA = +70°C)
Sinking: -10mA IOUT 0mA
TA = +25°C, VOUT tied to GND
VOUT = ±0.1%
f = 10kHz
2.7 5.5 V
11 25
µA
15 250
µV/V
6 100 µV/mA
133 µV/mA
10 100
30
150
-20
µV/mA
mA
µs
dB
eN Output Voltage Noise
0.1Hz f 10Hz
30 µVP-P
VN Broadband Voltage Noise
10Hz f 10kHz
10 µVRMS
VOUT/TA
Thermal Hysteresis (Note 10)
TA = +125°C
20 ppm
VOUT/t
Long Term Stability (Note 11)
TA = +25°C
50 ppm
NOTES:
9. 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.
10. 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.
11. Long term drift is logarithmic in nature and diminishes over time. Drift after the first 1000 hours will be approximately 10ppm/1khrs
12. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
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ISL21070 전자부품, 판매, 대치품
ISL21070
Typical Performance Characteristics Curves
VOUT = 2.5V, VIN = 3V, IOUT = 0mA, TA = +25°C unless otherwise specified. (Continued)
120 NO LOAD
100 1nF LOAD
10nF LOAD
80
100nF LOAD
60
40
20
01 10 100 1k 10k 100k 1M
FREQUENCY (Hz)
FIGURE 14. ZOUT vs f vs CL
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100 1
1nF LOAD
10nF LOAD
NO LOAD
100nF LOAD
10 100 1k 10k 100k
FREQUENCY (Hz)
FIGURE 15. PSRR vs FREQUENCY
1M 10M
1s/DIV
FIGURE 16. VOUT NOISE, 0.1Hz TO 10Hz
Applications Information
FGA Technology
The ISL21070 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.
Handling and Board Mounting
FGA references provide excellent initial accuracy and low
temperature drift at the expense of very little power drain. There
are some precautions to take to insure this accuracy is not
compromised. Excessive heat during solder reflow can cause
excessive initial accuracy drift, so the recommended +260°C
max temperature profile should not be exceeded. Expect up to
1mV drift from the solder reflow process.
FGA references are susceptible to excessive X-radiation like that
used in PC board manufacturing. Initial accuracy can change
10mV or more under extreme radiation. If an assembled board
needs to be X-rayed, care should be taken to shield the FGA
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25uA Micropower Voltage References

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