Micropower Voltage Reference
ISL21010
The ISL21010 is a precision, low dropout micropower bandgap voltage reference in a space-saving SOT-23 package. It operates from a single 2.2V to 5.5V supply (minimum voltage is dependent on voltage option) and provides a ±0.2% accurate reference. The ISL21010 provides up to 25mA output current sourcing with low 150mV dropout voltage. Output voltage options include 1.024V, 1.2V, 1.5V, 2.048V, 2.5V, 3.0V, 3.3V and 4.096V. The low supply current and low dropout voltage combined with high accuracy make the ISL21010 ideal for precision battery powered applications.
Features
• Reference Output Voltages . . . . . . . . . . . 1.024V, 1.25V, 1.5V, 2.048V, 2.5V, 3.0V, 3.3V, 4.096V • Precision 0.2% Initial Accuracy • Input Voltage Range: - ISL21010-10, -12, -15 (Coming Soon) . . . . . . - ISL21010-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . - ISL21010-25 (Coming Soon) . . . . . . . . . . . . . . - ISL21010-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . - ISL21010-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . - ISL21010-40 (Coming Soon) . . . . . . . . . . . . . . 2.2V to 5.5V 2.2V to 5.5V 2.6V to 5.5V 3.1V to 5.5V 3.4V to 5.5V 4.2V to 5.5V
Applications
• Battery Management/Monitoring • Low Power Standby Voltages • Portable Instrumentation • Consumer/Medical Electronics • Lower Cost Industrial and Instrumentation • Power Regulation Circuits • Control Loops and Compensation Networks • LED/Diode Supply
• Output Current Source Capability . . . . . . . . . . . . . . . . . 25mA • Operating Temperature Range. . . . . . . . . . .-40°C to +125°C • Output Voltage Noise (VOUT = 2.048V) . . . . . . . . . . . . . 58µVP-P (0.1Hz to 10Hz) • Supply Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48µA (Typ) • Tempco . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50ppm/°C • Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Ld SOT-23 • Pb-Free (RoHS compliant)
ISL21010 +5.0V Cb 1µF VIN GND VOUT Cl 0.1µF - 10µF
SIGNAL INPUT 0 – 5V
+5.0V ISL28134
R1 50Ω C1 4.7nF
+5.0V +AIN1 VREF VDD
ADC
-AIN1 GND
FIGURE 1. TYPICAL APPLICATION DIAGRAM
August 9, 2011 FN7896.0
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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2011. 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.
ISL21010 Pin Configuration
ISL21010 (3 LD SOT-23) TOP VIEW
VIN 1 3 VOUT 2 GND
Pin Descriptions
PIN NUMBER 1 2 3 PIN NAME VIN VOUT GND DESCRIPTION Input Voltage Connection Voltage Reference Output Ground Connection
Ordering Information
PART NUMBER (Notes 1, 2, 3, 4) ISL21010CFH320Z-TK ISL21010CFH330Z-TK ISL21010CFH333Z-TK NOTES: 1. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL21010. For more information on MSL please see Tech Brief TB363. 4. The part marking is located on the bottom of the part. PART MARKING BDSA BDVA BDWA VOUT OPTION (V) 2.048 3.0 3.3 INITIAL ACCURACY (%) ±0.2 ±0.2 ±0.2 TEMP. RANGE (°C) -40 to +125 -40 to +125 -40 to +125 PACKAGE TAPE & REEL (Pb-Free) 3 Ld SOT-23 3 Ld SOT-23 3 Ld SOT-23 PKG. DWG. # P3.064 P3.064 P3.064
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ISL21010 Table of Contents
Pin Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Thermal Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Electrical Specifications (ISL21010-20, VOUT = 2.048V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Electrical Specifications (ISL21010-30, VOUT = 3.0V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Electrical Specifications (ISL21010-33, VOUT = 3.3V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Typical Performance Characteristics Curves (VOUT = 2.048V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Typical Performance Characteristics Curves (VOUT = 3.0V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Typical Performance Characteristics Curves (VOUT = 3.3V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Applications Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Micropower Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Board Mounting Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Board Assembly Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Noise Performance and Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 15 15 15 15
Typical Application Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Package Outline Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
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ISL21010
Absolute Maximum Ratings
Max Voltage VIN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6.5V VOUT(pin) to GND (10s) . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VIN +0.5V Input Voltage Slew Rate (Max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1V/µs Temperature Range (Industrial) . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C ESD Rating Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5500V Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300V Charged Device Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2kV
Thermal Information
Thermal Resistance (Typical) . . . . . . . . . . . . . . . ..θJA (°C/W) .....θJC(°C/W) 3 Ld SOT-23 Package (Notes 5, 6). . . . . . . . . . . . . . . ..275.................110 Continuous Power Dissipation (TA = +125°C) . . . . . . . . . . . . . . . . . . 99mW 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
Recommended Operating Conditions
Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C Supply Voltage VOUT = 2.048V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2V to 5.5V VOUT = 3.0V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1V to 5.5V VOUT = 3.3V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.4V 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: 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 θJC, the “case temp” location is taken at the package top center. 7. Post-reflow drift for the ISL21010 devices may shift up to 4.0mV based on simulated reflow at 260°C peak temperature, three passes. The system design engineer must take this into account when considering the reference voltage after assembly.
Electrical Specifications (ISL21010-20, VOUT = 2.048V)
PARAMETER VOUT VOA TC VOUT VIN IIN ΔVOUT /ΔVIN ΔVOUT/ΔIOUT ISC tR eN VN ΔVOUT/ΔTA ΔVOUT/Δt Output Voltage VOUT Accuracy @ TA = +25°C (Note 7) Output Voltage Temperature Coefficient (Note 9) Input Voltage Range Supply Current Line Regulation Load Regulation Short Circuit Current Turn-on Settling Time Ripple Rejection Output Voltage Noise Broadband Voltage Noise Thermal Hysteresis (Note 11) Long Term Stability DESCRIPTION
VIN = 3.0V, TA = +25°C, IOUT = 0A, unless otherwise MIN (Note 8) -0.2 15 2.2 MAX (Note 8) +0.2 50 5.5 46 37 18 10 118 300 66 58 26 50 50 80 100 130 110
specified. Boldface limits apply over the operating temperature range, -40°C to +125°C. CONDITIONS TYP 2.048 UNIT V % ppm/°C V µA µA µV/V µV/mA µV/mA mA µs dB µVP-P µVRMS ppm ppm
TA = +25°C TA = -40°C to +125°C 2.2 V < VIN < 5.5V Sourcing: 0mA ≤ IOUT ≤ 25mA Sinking: -1mA ≤ IOUT ≤ 0mA TA = +25°C, VOUT tied to GND VOUT = ±0.1%, COUT = 1μF f = 120Hz 0.1Hz ≤ f ≤ 10Hz 10Hz ≤ f ≤ 1kHz ΔTA = +165°C 1000 hours, TA = +25°C
Boldface limits apply over the operating temperature range, -40°C to +125°C. PARAMETER VOUT VOA TC VOUT VIN Output Voltage VOUT Accuracy @ TA = +25°C (Note 7) Output Voltage Temperature Coefficient (Note 9) Input Voltage Range DESCRIPTION
Electrical Specifications (ISL21010-30, VOUT = 3.0V)
VIN = 5.0V, TA = +25°C, IOUT = 0A, unless otherwise specified. MIN (Note 8) -0.2 15 3.1 MAX (Note 8) +0.2 50 5.5
CONDITIONS
TYP 3.0
UNIT V % ppm/°C V
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ISL21010
Electrical Specifications (ISL21010-30, VOUT = 3.0V) VIN = 5.0V, TA = +25°C, IOUT = 0A, unless otherwise specified. Boldface limits apply over the operating temperature range, -40°C to +125°C. (Continued)
PARAMETER IIN ΔVOUT /ΔVIN ΔVOUT/ΔIOUT VINDO ISC tR eN VN ΔVOUT/ΔTA ΔVOUT/Δt Supply Current Line Regulation Load Regulation Dropout Voltage (Note 10) Short Circuit Current Turn-on Settling Time Ripple Rejection Output Voltage Noise Broadband Voltage Noise Thermal Hysteresis (Note 11) Long Term Stability DESCRIPTION CONDITIONS TA = +25°C TA = -40°C to +125°C 3.1 V < VIN < 5.5V Sourcing: 0mA ≤ IOUT ≤ 25mA Sinking: -1mA ≤ IOUT ≤ 0mA IOUT = 10mA TA = +25°C, VOUT tied to GND VOUT = ±0.1%, COUT =1μF f = 120Hz 0.1Hz ≤ f ≤ 10Hz 10Hz ≤ f ≤ 1kHz ΔTA = +165°C 1000 hours, TA = +25°C 73 48 10 60 126 300 62 86 36 50 50 150 MIN (Note 8) TYP 48 MAX (Note 8) 80 100 230 110 UNIT µA µA µV/V µV/mA µV/mA mV mA µs dB µVP-P µVRMS ppm ppm
Boldface limits apply over the operating temperature range, -40°C to +125°C. PARAMETER VOUT VOA TC VOUT VIN IIN ΔVOUT /ΔVIN ΔVOUT/ΔIOUT VINDO ISC tR eN VN ΔVOUT/ΔTA ΔVOUT/Δt NOTES: Output Voltage VOUT Accuracy @ TA = +25°C (Note 7) Output Voltage Temperature Coefficient (Note 9) Input Voltage Range Supply Current Line Regulation Load Regulation Dropout Voltage (Note 10) Short Circuit Current Turn-on Settling Time Ripple Rejection Output Voltage Noise Broadband Voltage Noise Thermal Hysteresis (Note 11) Long Term Stability DESCRIPTION
Electrical Specifications (ISL21010-33, VOUT = 3.3V)
VIN = 5.0V, TA = +25°C, IOUT = 0A, unless otherwise specified. MIN (Note 8) -0.2 15 3.4 MAX (Note 8) +0.2 50 5.5 48 80 45 10 60 126 300 61 95 40 50 50 150 80 100 320 110
CONDITIONS
TYP 3.3
UNIT V % ppm/°C V µA µA µV/V µV/mA µV/mA mV mA µs dB µVP-P µVRMS ppm ppm
TA = +25°C TA = -40°C to +125°C 3.4 V < VIN < 5.5V Sourcing: 0mA ≤ IOUT ≤ 25mA Sinking: -1mA ≤ IOUT ≤ 0mA IOUT = 10mA TA = +25°C, VOUT tied to GND VOUT = ±0.1%, COUT = 1μF f = 120Hz 0.1Hz ≤ f ≤ 10Hz 10Hz ≤ f ≤ 1kHz ΔTA = +165°C 1000 hours, TA = +25°C
8. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design. 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 +125°C = +165°C. 10. Dropout Voltage is the minimum VIN - VOUT differential voltage measured at the point where VOUT drops 1mV from VIN = 5.0V at TA = +25°C. 11. Thermal Hysteresis is the change of VOUT measured @ TA = +25°C after temperature cycling over a specified range, ΔTA. 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 ΔTA = +165°C, the device under test is cycled from +25°C to -40°C to +125°C to +25°C.
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FN7896.0 August 9, 2011
ISL21010 Typical Performance Characteristics Curves (VOUT = 2.048V)
VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified.
49 47 45 IDD (µA) 43 41 39 37 35 2.0 UNIT 2 UNIT 1 UNIT 3 IDD (µA) 70 65 60 55 50 45 40 35 30 25 2.5 3.0 3.5 4.0 VIN (V) 4.5 5.0 5.5 6.0 20 2.0 2.5 3.0 3.5 4.0 VIN (V) 4.5 5.0 5.5 6.0 -40°C +25°C +125°C
FIGURE 2. IIN vs VIN, THREE UNITS
FIGURE 3. IIN vs VIN, OVER-TEMPERATURE
200 UNIT 3 150 100 50 0 UNIT 1 -50 -100 2.0 Δ VOUT (µV) Δ VOUT (µV) UNIT 2
300 250 200 150 100 50 0 -50 2.5 3.0 3.5 4.0 VIN (V) 4.5 5.0 5.5 6.0 -100 2.0 2.5 -40°C +25°C +125°C
3.0
3.5
4.0 VIN (V)
4.5
5.0
5.5
6.0
FIGURE 4. LINE REGULATION, THREE UNITS
FIGURE 5. LINE REGULATION OVER-TEMPERATURE
VIN = 4.5V 150 AMPLITUDE (mV) 100
500mV STEP
VIN = 4.5V VIN = 4.5V 500mV STEP VIN = 4.5V
0 -50 -100 -150 250 500 750 TIME (µs) 1000 1250
AMPLITUDE (mV)
50
40 20 0 -20 250
500
750 TIME (µs)
1000
1250
FIGURE 6. LINE TRANSIENT RESPONSE WITH 0.1µF LOAD
FIGURE 7. LINE TRANSIENT RESPONSE WITH 10µF LOAD
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FN7896.0 August 9, 2011
ISL21010 Typical Performance Characteristics Curves (VOUT = 2.048V)
VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified. (Continued)
5 4 3 Δ VOUT (mV) 2 1 0 -1 +25°C -2 -3 -30 -25 -20 -15 -10 -5 0 SINKING 5 -40°C 40 +125°C AMPLITUDE (mV) 30 20 10 0 -10 -20 -30 -40 200 25mA 0mA 25mA
400
600
800 TIME (µs)
1000
1200
1400
SOURCING
ILOAD (mA)
FIGURE 8. LOAD REGULATION OVER-TEMPERATURE
FIGURE 9. LOAD TRANSIENT RESPONSE, AT 25mA LOAD
6 5 1mA 0mA 1mA VOUT (V) 4 0.1µF 3 2 1 0 0 -5 200 -1 1µF VIN
AMPLITUDE (mV)
5
1mA @1µF
400
600
800 TIME (µs)
1000
1200
1400
0
50
100
150 TIME (µs)
200
250
300
FIGURE 10. LOAD TRANSIENT RESPONSE AT 1mA LOAD
FIGURE 11. TURN-ON TIME
4.0 3.5 3.0 PSRR (dB) ZOUT (Ω) 2.5 2.0 1.5 1.0 0.5 0 10 100 1k 10k 100k 1M 10M CL = 10µF CL = 0.1µF CL = 1µF
0
CL = 0.1µF CL = 1µF
-20
-40 CL = 10µF -60
-80
-100 10
100
1k
10k
100k
1M
FREQUENCY (Hz)
FREQUENCY (Hz)
FIGURE 12. ZOUT vs FREQUENCY
FIGURE 13. RIPPLE REJECTION AT DIFFERENT CAPACITIVE LOADS
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ISL21010 Typical Performance Characteristics Curves (VOUT = 2.048V)
VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified. (Continued)
2.099 2.076 2.053 2.030 2.007 VOUT (V) 1.961 1.938 1.915 1.892 1.869 1.846 1.823 1.800 1.900 VDROPOUT ~ 86mV 1.957 2.014 2.071 2.128 VIN (V) 2.185 2.242 2.299 2.0470 2.121 2.131 2.141 VIN (V) 2.151 2.161 2.0475 VOUT (V) 1.984 2.0485 2.0490
2.0480
Δ 1mV
FIGURE 14. DROPOUT (10mA SOURCED LOAD)
FIGURE 15. DROPOUT ZOOMED (10mA SOURCED LOAD)
2.0525 2.0515 2.0505
TYPICAL TEMPERATURE COEFFICIENT CURVE FOR 10 UNITS
-40 -60 -80 -100 -120 -140 -160 -180 2.0
+125°C
+25°C
2.0485 VOUT (V) 2.0475 2.0465 2.0455 2.0445 2.0435 2.0425 -55 -35 -15 5 25 45 65 85 105 125 145
CURRENT (mA)
2.0495
-55°C
2.5
3.0
3.5
TEMPERATURE (°C)
4.0 4.5 VIN (V)
5.0
5.5
6.0
6.5
FIGURE 16. VOUT vs TEMPERATURE
FIGURE 17. SHORT CIRCUIT TO GND
140 120 100 80 VOUT (µV) 60 40 20 0 -20 -40 -60 0 2 4 TIME (s) 6 8 10
FIGURE 18. VOUT vs NOISE, 0.1Hz TO 10Hz
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FN7896.0 August 9, 2011
ISL21010 Typical Performance Characteristics Curves (VOUT = 3.0V)
VIN = 5.0V, IOUT = 0mA, TA = +25°C unless otherwise specified.
50 80 70 48 UNIT 3 IDD (µA) UNIT 1 44 UNIT 2 IDD (µA) 46 60 50 40 30 20 10 40 3.1 3.5 3.9 4.3 VIN (V) 4.7 5.1 5.5 0 3.1 3.5 3.9 4.3 VIN (V) 4.7 5.1 5.5 -40°C +125°C
+25°C
42
FIGURE 19. IIN vs VIN, THREE UNITS
FIGURE 20. IIN vs VIN, OVER-TEMPERATURE
600
600 +125°C
400 UNIT 1 Δ VOUT (µV) Δ VOUT (µV) 200 UNIT 2
400
200
+25°C
0 UNIT 3 -200
0
-200
-40°C
-400 3.0
3.5
4.0
4.5 VIN (V)
5.0
5.5
6.0
-400 3.0
3.5
4.0
4.5 VIN (V)
5.0
5.5
6.0
FIGURE 21. LINE REGULATION, THREE UNITS
FIGURE 22. LINE REGULATION OVER-TEMPERATURE
VIN = 4.5V
500mV STEP
VIN = 4.5V
VIN = 4.5V
500mV STEP
VIN = 4.5V
200 AMPLITUDE (mV) 40 AMPLITUDE (mV) 500 750 TIME (µs) 1000 1250 100 0 -100 -200 250 20 0 -20 -40 250 500 750 TIME (µs) 1000 1250
FIGURE 23. LINE TRANSIENT WITH 0.1µF LOAD
FIGURE 24. LINE TRANSIENT RESPONSE WITH 10µF LOAD
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FN7896.0 August 9, 2011
ISL21010 Typical Performance Characteristics Curves (VOUT = 3.0V)
VIN = 5.0V, IOUT = 0mA, TA = +25°C unless otherwise specified. (Continued)
3.5 -40°C 2.5
25mA
0mA 25mA
Δ VOUT (mV)
1.5
+125°C AMPLITUDE (mV)
30 20 10 0 -10 -20 -30 200 400 600 800 TIME (µs) 1000 1200 1400
0.5
+25°C
-0.5
-1.5 -30 -25 SOURCING
-20
-15 -10 ILOAD (mA)
-5
0 SINKING
5
FIGURE 25. LOAD REGULATION OVER-TEMPERATURE
FIGURE 26. LOAD REGULATION OVER-TEMPERATURE
6 1mA 5 4 0mA VOUT (V) 3 2 1 0 0 -1 VIN 0.1µF 1µF
AMPLITUDE (mV)
5
1mA @ 1µF
-5 200
400
600
800 TIME (µs)
1000
1200
1400
0
50
100
150 TIME (µs)
200
250
300
FIGURE 27. LOAD TRANSIENT RESPONSE
FIGURE 28. TURN-ON TIME
7 6 5 ZOUT (Ω) 4 3 2 1 0 10 100 1k 10k FREQUENCY (Hz) 100k 1M 10M CL = 0.1µF CL = 1µF CL = 10µF PSRR (dB)
0
-20
-40
CL = 10µF
-60
-80
CL = 1µF CL = 0.1µF
-100 10
100
1k
10k
100k
1M
FREQUENCY (Hz)
FIGURE 29. ZOUT vs FREQUENCY
FIGURE 30. RIPPLE REJECTION AT DIFFERENT CAPACITIVE LOADS
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ISL21010 Typical Performance Characteristics Curves (VOUT = 3.0V)
VIN = 5.0V, IOUT = 0mA, TA = +25°C unless otherwise specified. (Continued)
3.0050 2.9995 2.9940 2.9885 VOUT (V) VOUT (V) 2.9830 2.9775 2.9720 2.9665 2.9610 2.9555 2.9500 3.00 3.05 3.10 VIN (V) 3.15 3.20 2.9985 3.057 3.059 3.061 3.063 VIN (V) 3.065 3.067 3.069 3.0000 3.0005
2.9995
Δ 1mV
2.9990 VDROPOUT ~ 59mV
FIGURE 31. DROPOUT (1mA SOURCED LOAD)
FIGURE 32. DROPOUT ZOOMED (10mA SOURCED LOAD)
3.002 3.001 3.000 2.999 VOUT (V) 2.998 2.997 2.996 2.995 2.994 -55
TYPICAL TEMPERATURE COEFFICIENT CURVE FOR 10 UNITS
-60 -70 -80 CURRENT (mA) -90 -100 -110 -120 -130 -140 -150 -55°C +25°C +125°C
-35
-15
5
25 45 65 TEMPERATURE (°C)
85
105
125
145
-160 3.0
3.5
4.0
4.5 VIN (V)
5.0
5.5
6.0
FIGURE 33. VOUT vs TEMPERATURE
FIGURE 34. SHORT CIRCUIT TO GND
140 120 100 80 VOUT (µV) 60 40 20 0 -20 -40 -60 0 2 4 TIME (s) 6 8 10
FIGURE 35. VOUT vs NOISE, 0.1Hz TO 10Hz
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ISL21010 Typical Performance Characteristics Curves (VOUT = 3.3V)
VIN = 5.0V, IOUT = 0mA, TA = +25°C unless otherwise specified.
70 70 +125°C
60 UNIT 3
60 +25°C
IDD (µA)
UNIT 2
IDD (µA)
50
50
40 UNIT 1 30
40 -40°C 30
20 3.0
3.5
4.0
4.5 VIN (V)
5.0
5.5
6.0
20
3.0
3.5
4.0
4.5 VIN (V)
5.0
5.5
6.0
FIGURE 36. IIN vs VIN, THREE UNITS
FIGURE 37. IIN vs VIN, OVER-TEMPERATURE
400 300 200 Δ VOUT (µV) 100 0 UNIT 3 -100 -200 3.0 UNIT 1 UNIT 2
600
400
+125°C +25°C
Δ VOUT (µV)
200
0 -40°C -200
3.5
4.0
4.5 VIN (V)
5.0
5.5
6.0
-400 3.0
3.5
4.0
4.5 VIN (V)
5.0
5.5
6.0
FIGURE 38. LINE REGULATION, THREE UNITS
FIGURE 39. LINE REGULATION OVER-TEMPERATURE
VIN = 4.5V
500mV STEP
VIN = 4.5V
VIN = 4.5V
500mV STEP
VIN = 4.5V
200 AMPLITUDE (mV) AMPLITUDE (mV) 100 0 -100 -200 250 100 0 -100 -200 250
500
750 TIME (µs)
1000
1250
500
750 TIME (µs)
1000
1250
FIGURE 40. LINE TRANSIENT WITH 0.1µF LOAD
FIGURE 41. LINE TRANSIENT RESPONSE WITH 10µF LOAD
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ISL21010 Typical Performance Characteristics Curves (VOUT = 3.3V)
VIN = 5.0V, IOUT = 0mA, TA = +25°C unless otherwise specified. (Continued)
2.0 1.5 1.0 Δ VOUT (mV) 0.5 0.0 +25°C -0.5 -1.0 -1.5 -2.0 -30 -25 SOURCING -20 -15 -10 ILOAD (mA) -5 0 SINKING 5 +125°C AMPLITUDE (mV) 20 25mA @ 0.1µF 10 0 -10 -20 -30 200 400 600 800 TIME (µs) 1000 1200 1400 -40°C 25mA
0mA
25mA
FIGURE 42. LOAD REGULATION OVER-TEMPERATURE
FIGURE 43. LOAD REGULATION OVER-TEMPERATURE
6 5 1mA 0mA VOUT (V) 4 3 2 1 0 400 600 800 TIME (µs) 1000 1200 1400 -1 0 50 100 150 TIME (µs) 200 250 300 0.1µF
VIN 1µF
5.0 AMPLITUDE (mV) 0.0 -5.0 -10.0 200
FIGURE 44. LOAD TRANSIENT RESPONSE
FIGURE 45. TURN-ON TIME
4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 10 100 1k 10k 100k 1M 10M CL = 1µF CL = 10µF PSRR (dB) ZOUT (Ω) CL = 0.1µF
0
-20
-40
CL = 10µF
-60
-80
CL = 1µF CL = 0.1µF
-100 10
100
1k
10k
100k
1M
FREQUENCY (Hz)
FREQUENCY (Hz)
FIGURE 46. ZOUT vs FREQUENCY
FIGURE 47. RIPPLE REJECTION AT DIFFERENT CAPACITIVE LOADS
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ISL21010 Typical Performance Characteristics Curves (VOUT = 3.3V)
VIN = 5.0V, IOUT = 0mA, TA = +25°C unless otherwise specified. (Continued)
3.310 3.305 3.300 3.295 3.290 VOUT (V) 3.280 3.275 3.270 3.265 3.260 3.255 3.250 3.30 3.2980 3.350 3.2985 VOUT (V) 3.285 3.2990 3.2995 Δ1mV 3.3000
VDROPOUT ~58mV
3.32
3.34
3.36
3.38
3.40 VIN (V)
3.42
3.44
3.46
3.48
3.50
3.355
3.360 VIN (V)
3.365
3.370
FIGURE 48. DROPOUT (1mA SOURCED LOAD)
FIGURE 49. DROPOUT ZOOMED (10mA SOURCED LOAD)
3.305125
-70 +125°C
3.302125 CURRENT (mA)
-90
VOUT (V)
3.299125
-110
+25°C
3.296125
-130 -55°C
3.293125
-150
3.290125 -55
-35
-15
5
25
45
65
85
105
125 145
-170 3.0
3.5
4.0
TEMPERATURE (°C)
4.5 VIN (V)
5.0
5.5
6.0
FIGURE 50. VOUT vs TEMPERATURE
FIGURE 51. SHORT CIRCUIT TO GND
140 120 100 80 VOUT (µV) 60 40 20 0 -20 -40 -60 0 2 4 TIME (s) 6 8 10
FIGURE 52. VOUT vs NOISE, 0.1Hz TO 10Hz
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ISL21010 Applications Information
Micropower Operation
The ISL21010 consumes very low supply current due to the proprietary bandgap technology. Low noise performance is achieved using optimized biasing techniques. Supply current is typically 48µA and noise in the 0.1Hz to 10Hz bandwidth is 58µVP-P to 100µVP-P (VOUT = 2.048V, 3.0V, and 3.3V) benefitting precision, low noise portable applications such as handheld meters and instruments. Data Converters in particular can utilize the ISL21010 as an external voltage reference. Low power DAC and ADC circuits will realize maximum resolution with lowest noise. The device Maintains output voltage during conversion cycles with fast response, although it is helpful to add an output capacitor, typically 1µF. due to these 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. Mounting the device in a cutout also minimizes flex. Obviously mounting the device on flexprint or extremely thin PC material will likewise cause loss of reference accuracy.
Board Assembly Considerations
Bandgap references provide high accuracy and low temperature drift but some PC board assembly precautions are necessary. Normal Output voltage shifts of 100µV to 4mV 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.
Noise Performance and Reduction
The recommended capacitive load range for the ISL21010 is from 0.1µF to 10.0µF to ensure stability and best transient performance. Parallel 0.1µF and 10µF capacitors can be used to optimize performance as well. The noise specification stated in the Electrical Specification tables (starting on page 4) is for 0.1µF capacitive load, and larger values will reduce the output noise level.
Board Mounting Considerations
For applications requiring the highest accuracy, board mounting location should be reviewed. The device uses a plastic SOIC package, which will subject the die to mild stresses when the Printed Circuit (PC) board is heated and cooled, slightly changing the shape. Placing the device in areas subject to slight twisting can cause degradation of the accuracy of the reference voltage
Typical Application Circuit
VIN 2.1V – 5.5V 0.1µF 10µF
ISL21010 VOUT SENSE 0.1µF - 10µF GND LOAD
VIN
VOUT
FIGURE 53. KELVIN SENSED LOAD
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ISL21010 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 8/9/11 REVISION FN7896.0 Initial Release CHANGE
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: ISL21010 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
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FN7896.0 August 9, 2011
ISL21010
Package Outline Drawing
P3.064
3 LEAD SMALL OUTLINE TRANSISTOR PLASTIC PACKAGE (SOT23-3) Rev 2, 9/09
2.92±0.12 C L 4 DETAIL "A"
0.13±0.05
2.37±0.27 C L 1.30±0.10 4
0.950 0.435±0.065 0.20 M C TOP VIEW 0 - 8 deg.
10° TYP (2 plcs)
0.91±0.03 1.00±0.12
0.25 GAUGE PLANE SEATING PLANE C SEATING PLANE 0.10 C
0.013(MIN) 0.100(MAX) SIDE VIEW DETAIL "A"
0.31±0.10 5
(0.60)
NOTES: (2.15) 1. 2. (1.25) 3. 4. 5. (0.95 typ.) TYPICAL RECOMMENDED LAND PATTERN Reference JEDEC TO-236. Dimension does not include interlead flash or protrusions. Interlead flash or protrusions shall not exceed 0.25mm per side. Footlength is measured at reference to gauge plane. Dimensions are in millimeters. Dimensions in ( ) for Reference Only. Dimensioning and tolerancing conform to AMSEY14.5m-1994.
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