INTERSIL ISL21010CFH320Z-TK

Micropower Voltage Reference
ISL21010
Features
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.
• Reference Output Voltages . . . . . . . . . . . 1.024V, 1.25V, 1.5V,
2.048V, 2.5V, 3.0V, 3.3V, 4.096V
• Precision 0.2% Initial Accuracy
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.
• Input Voltage Range:
- ISL21010-10, -12, -15 (Coming Soon) . . . . . .
- ISL21010-20. . . . . . . . . . . . . . . . . . . . . . . . . . . .
- ISL21010-25 (Coming Soon) . . . . . . . . . . . . . .
- ISL21010-30. . . . . . . . . . . . . . . . . . . . . . . . . . . .
- ISL21010-33. . . . . . . . . . . . . . . . . . . . . . . . . . . .
- ISL21010-40 (Coming Soon) . . . . . . . . . . . . . .
Applications
• Output Current Source Capability . . . . . . . . . . . . . . . . . 25mA
• Battery Management/Monitoring
• Operating Temperature Range. . . . . . . . . . .-40°C to +125°C
• Low Power Standby Voltages
• Output Voltage Noise (VOUT = 2.048V) . . . . . . . . . . . . . 58µVP-P
(0.1Hz to 10Hz)
• Portable Instrumentation
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
• Consumer/Medical Electronics
• Supply Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48µA (Typ)
• Lower Cost Industrial and Instrumentation
• Tempco . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50ppm/°C
• Power Regulation Circuits
• Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Ld SOT-23
• Control Loops and Compensation Networks
• Pb-Free (RoHS compliant)
• LED/Diode Supply
ISL21010
VIN
+5.0V
Cb
1µF
SIGNAL INPUT
0 – 5V
+5.0V
R1
50Ω
ISL28134
VOUT
Cl
0.1µF - 10µF
GND
+5.0V
+AIN1
C1
4.7nF
VREF
VDD
ADC
-AIN1
GND
FIGURE 1. TYPICAL APPLICATION DIAGRAM
August 9, 2011
FN7896.0
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 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
Pin Descriptions
ISL21010
(3 LD SOT-23)
TOP VIEW
PIN NUMBER
PIN NAME
1
VIN
Input Voltage Connection
2
VOUT
Voltage Reference Output
3
GND
Ground Connection
VIN 1
3
DESCRIPTION
GND
VOUT 2
Ordering Information
PART
MARKING
VOUT OPTION
(V)
INITIAL
ACCURACY
(%)
TEMP. RANGE
(°C)
PACKAGE
TAPE & REEL
(Pb-Free)
PKG.
DWG. #
ISL21010CFH320Z-TK
BDSA
2.048
±0.2
-40 to +125
3 Ld SOT-23
P3.064
ISL21010CFH330Z-TK
BDVA
3.0
±0.2
-40 to +125
3 Ld SOT-23
P3.064
ISL21010CFH333Z-TK
BDWA
3.3
±0.2
-40 to +125
3 Ld SOT-23
P3.064
PART NUMBER
(Notes 1, 2, 3, 4)
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.
2
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August 9, 2011
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
3
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August 9, 2011
ISL21010
Absolute Maximum Ratings
Thermal Information
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 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)
VIN = 3.0V, TA = +25°C, IOUT = 0A, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +125°C.
PARAMETER
DESCRIPTION
VOUT
Output Voltage
VOA
VOUT Accuracy @ TA = +25°C (Note 7)
TC VOUT
Output Voltage Temperature Coefficient (Note 9)
VIN
Input Voltage Range
IIN
Supply Current
CONDITIONS
MIN
(Note 8)
TYP
MAX
(Note 8)
UNIT
+0.2
%
2.048
-0.2
15
2.2
TA = +25°C
46
TA = -40°C to +125°C
V
50
ppm/°C
5.5
V
80
µA
100
µA
ΔVOUT /ΔVIN
Line Regulation
2.2 V < VIN < 5.5V
37
130
µV/V
ΔVOUT/ΔIOUT
Load Regulation
Sourcing: 0mA ≤ IOUT ≤ 25mA
18
110
µV/mA
ISC
Short Circuit Current
tR
Sinking: -1mA ≤ IOUT ≤ 0mA
10
µV/mA
TA = +25°C, VOUT tied to GND
118
mA
Turn-on Settling Time
VOUT = ±0.1%, COUT = 1μF
300
µs
Ripple Rejection
f = 120Hz
66
dB
eN
Output Voltage Noise
0.1Hz ≤ f ≤ 10Hz
58
µVP-P
VN
Broadband Voltage Noise
10Hz ≤ f ≤ 1kHz
26
µVRMS
ΔVOUT/ΔTA
Thermal Hysteresis (Note 11)
ΔTA = +165°C
50
ppm
ΔVOUT/Δt
Long Term Stability
1000 hours, TA = +25°C
50
ppm
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.
PARAMETER
DESCRIPTION
VOUT
Output Voltage
VOA
VOUT Accuracy @ TA = +25°C (Note 7)
TC VOUT
Output Voltage Temperature Coefficient (Note 9)
VIN
Input Voltage Range
4
CONDITIONS
MIN
(Note 8)
TYP
MAX
(Note 8)
3.0
-0.2
15
3.1
UNIT
V
+0.2
%
50
ppm/°C
5.5
V
FN7896.0
August 9, 2011
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
TYP
MAX
(Note 8)
UNIT
48
80
µA
100
µA
3.1 V < VIN < 5.5V
73
230
µV/V
110
DESCRIPTION
IIN
Supply Current
ΔVOUT /ΔVIN
Line Regulation
ΔVOUT/ΔIOUT
Load Regulation
CONDITIONS
MIN
(Note 8)
TA = +25°C
TA = -40°C to +125°C
Sourcing: 0mA ≤ IOUT ≤ 25mA
48
Sinking: -1mA ≤ IOUT ≤ 0mA
10
µV/mA
µV/mA
VINDO
Dropout Voltage (Note 10)
IOUT = 10mA
60
ISC
Short Circuit Current
TA = +25°C, VOUT tied to GND
126
Turn-on Settling Time
VOUT = ±0.1%, COUT =1μF
300
µs
Ripple Rejection
f = 120Hz
62
dB
tR
150
mV
mA
eN
Output Voltage Noise
0.1Hz ≤ f ≤ 10Hz
86
µVP-P
VN
Broadband Voltage Noise
10Hz ≤ f ≤ 1kHz
36
µVRMS
ΔVOUT/ΔTA
Thermal Hysteresis (Note 11)
ΔTA = +165°C
50
ppm
ΔVOUT/Δt
Long Term Stability
1000 hours, TA = +25°C
50
ppm
Electrical Specifications (ISL21010-33, VOUT = 3.3V)
VIN = 5.0V, TA = +25°C, IOUT = 0A, unless otherwise specified.
Boldface limits apply over the operating temperature range, -40°C to +125°C.
PARAMETER
DESCRIPTION
VOUT
Output Voltage
VOA
VOUT Accuracy @ TA = +25°C (Note 7)
TC VOUT
Output Voltage Temperature Coefficient (Note 9)
VIN
Input Voltage Range
IIN
Supply Current
CONDITIONS
MIN
(Note 8)
TYP
MAX
(Note 8)
UNIT
3.3
-0.2
15
3.4
TA = +25°C
48
TA = -40°C to +125°C
V
+0.2
%
50
ppm/°C
5.5
V
80
µA
100
µA
ΔVOUT /ΔVIN
Line Regulation
3.4 V < VIN < 5.5V
80
320
µV/V
ΔVOUT/ΔIOUT
Load Regulation
Sourcing: 0mA ≤ IOUT ≤ 25mA
45
110
µV/mA
VINDO
Dropout Voltage (Note 10)
ISC
tR
Sinking: -1mA ≤ IOUT ≤ 0mA
10
IOUT = 10mA
60
Short Circuit Current
TA = +25°C, VOUT tied to GND
126
Turn-on Settling Time
VOUT = ±0.1%, COUT = 1μF
300
µs
Ripple Rejection
f = 120Hz
61
dB
µV/mA
150
mV
mA
eN
Output Voltage Noise
0.1Hz ≤ f ≤ 10Hz
95
µVP-P
VN
Broadband Voltage Noise
10Hz ≤ f ≤ 1kHz
40
µVRMS
ΔVOUT/ΔTA
Thermal Hysteresis (Note 11)
ΔTA = +165°C
50
ppm
ΔVOUT/Δt
Long Term Stability
1000 hours, TA = +25°C
50
ppm
NOTES:
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.
5
FN7896.0
August 9, 2011
ISL21010
Typical Performance Characteristics Curves (VOUT = 2.048V)
VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified.
70
49
47
60
UNIT 3
UNIT 1
55
IDD (µA)
45
IDD (µA)
+125°C
65
43
41
+25°C
50
45
40
UNIT 2
39
35
-40°C
30
37
25
35
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
20
6.0
2.0
2.5
3.0
3.5
VIN (V)
4.0
VIN (V)
4.5
5.0
5.5
6.0
5.5
6.0
FIGURE 3. IIN vs VIN, OVER-TEMPERATURE
FIGURE 2. IIN vs VIN, THREE UNITS
200
300
UNIT 3
+125°C
250
150
200
UNIT 2
Δ VOUT (µV)
Δ VOUT (µV)
100
50
0
150
100
+25°C
50
0
UNIT 1
-50
-40°C
-50
-100
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
-100
2.0
6.0
2.5
3.0
FIGURE 4. LINE REGULATION, THREE UNITS
VIN = 4.5V
4.0
4.5
5.0
FIGURE 5. LINE REGULATION OVER-TEMPERATURE
VIN = 4.5V
500mV STEP
500mV STEP
VIN = 4.5V
150
VIN = 4.5V
100
40
50
AMPLITUDE (mV)
AMPLITUDE (mV)
3.5
VIN (V)
VIN (V)
0
-50
-100
-150
250
500
750
1000
TIME (µs)
FIGURE 6. LINE TRANSIENT RESPONSE WITH 0.1µF LOAD
6
1250
20
0
-20
250
500
750
TIME (µs)
1000
1250
FIGURE 7. LINE TRANSIENT RESPONSE WITH 10µF LOAD
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
25mA
-40°C
25mA
0mA
40
2
30
+125°C
AMPLITUDE (mV)
Δ VOUT (mV)
3
1
0
-1
+25°C
-2
-3
-30
-25
-20
-15
-10
-5
ILOAD (mA)
SOURCING
0
20
10
0
-10
-20
-30
-40
200
5
400
600
800
1000
1200
1400
TIME (µs)
SINKING
FIGURE 8. LOAD REGULATION OVER-TEMPERATURE
FIGURE 9. LOAD TRANSIENT RESPONSE, AT 25mA LOAD
6
5
1mA
0.1µF
VOUT (V)
AMPLITUDE (mV)
0mA
5
VIN
4
1mA
3
1µF
2
1mA @1µF
1
0
0
-5
200
400
600
800
1000
1200
-1
1400
0
50
100
150
TIME (µs)
TIME (µs)
4.0
0
CL = 1µF
-20
CL = 0.1µF
-40
PSRR (dB)
ZOUT (Ω)
3.0
2.5
2.0
1.5
250
300
FIGURE 11. TURN-ON TIME
FIGURE 10. LOAD TRANSIENT RESPONSE AT 1mA LOAD
3.5
200
CL = 10µF
1.0
CL = 0.1µF
CL = 1µF
CL = 10µF
-60
-80
0.5
0
10
100
1k
10k
100k
FREQUENCY (Hz)
FIGURE 12. ZOUT vs FREQUENCY
7
1M
10M
-100
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
FIGURE 13. RIPPLE REJECTION AT DIFFERENT CAPACITIVE LOADS
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)
2.0490
2.099
2.076
2.053
2.030
2.0485
2.007
VOUT (V)
VOUT (V)
1.984
1.961
1.938
1.915
2.0480
Δ1mV
1.892
2.0475
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
2.0470
2.121
2.299
2.0515
2.151
2.161
FIGURE 15. DROPOUT ZOOMED (10mA SOURCED LOAD)
-40
TYPICAL TEMPERATURE COEFFICIENT CURVE FOR 10 UNITS
-60
+125°C
2.0505
CURRENT (mA)
2.0495
2.0485
2.0475
2.0465
2.0455
+25°C
-80
-100
-120
-55°C
-140
2.0445
-160
2.0435
2.0425
-55
-35
-15
5
25
45
65
85
105
125
145
-180
2.0
2.5
3.0
3.5
4.0
4.5
VIN (V)
TEMPERATURE (°C)
FIGURE 16. VOUT vs TEMPERATURE
5.0
5.5
6.0
6.5
FIGURE 17. SHORT CIRCUIT TO GND
140
120
100
80
VOUT (µV)
VOUT (V)
2.141
VIN (V)
FIGURE 14. DROPOUT (10mA SOURCED LOAD)
2.0525
2.131
60
40
20
0
-20
-40
-60
0
2
4
6
8
10
TIME (s)
FIGURE 18. VOUT vs NOISE, 0.1Hz TO 10Hz
8
FN7896.0
August 9, 2011
ISL21010
Typical Performance Characteristics Curves (VOUT = 3.0V)
VIN = 5.0V, IOUT = 0mA, TA = +25°C unless otherwise specified.
80
50
+125°C
70
48
60
46
UNIT 1
44
+25°C
50
IDD (µA)
IDD (µA)
UNIT 3
40
-40°C
30
UNIT 2
20
42
10
40
3.1
3.5
3.9
4.3
4.7
5.1
0
5.5
3.1
3.5
3.9
VIN (V)
4.3
VIN (V)
4.7
5.1
5.5
FIGURE 20. IIN vs VIN, OVER-TEMPERATURE
FIGURE 19. IIN vs VIN, THREE UNITS
600
600
400
400
+125°C
200
Δ VOUT (µV)
Δ VOUT (µV)
UNIT 1
UNIT 2
0
200
+25°C
0
UNIT 3
-40°C
-200
-200
-400
3.0
3.5
4.0
4.5
5.0
5.5
-400
3.0
6.0
3.5
4.0
VIN (V)
FIGURE 21. LINE REGULATION, THREE UNITS
500mV STEP
VIN = 4.5V
4.5
5.0
5.5
6.0
VIN (V)
FIGURE 22. LINE REGULATION OVER-TEMPERATURE
500mV STEP
VIN = 4.5V
VIN = 4.5V
VIN = 4.5V
40
100
AMPLITUDE (mV)
AMPLITUDE (mV)
200
0
-100
-200
250
500
750
1000
TIME (µs)
FIGURE 23. LINE TRANSIENT WITH 0.1µF LOAD
9
1250
20
0
-20
-40
250
500
750
TIME (µs)
1000
1250
FIGURE 24. LINE TRANSIENT RESPONSE WITH 10µF LOAD
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
25mA
+125°C
1.5
0.5
30
AMPLITUDE (mV)
Δ VOUT (mV)
0mA
25mA
2.5
+25°C
-0.5
-1.5
-30
-25
SOURCING
-20
-15
-10
ILOAD (mA)
-5
0
SINKING
20
10
0
-10
-20
-30
200
5
FIGURE 25. LOAD REGULATION OVER-TEMPERATURE
400
600
800
TIME (µs)
1000
1200
1400
FIGURE 26. LOAD REGULATION OVER-TEMPERATURE
6
5
1mA
VIN
4
0.1µF
AMPLITUDE (mV)
VOUT (V)
0mA
5
1µF
3
2
1mA @ 1µF
1
0
-5
200
0
400
600
800
TIME (µs)
1000
1200
-1
1400
0
50
100
FIGURE 27. LOAD TRANSIENT RESPONSE
150
TIME (µs)
200
250
300
FIGURE 28. TURN-ON TIME
0
7
6
-20
PSRR (dB)
ZOUT (Ω)
5
CL = 0.1µF
4
CL = 1µF
3
-40
-60
CL = 10µF
2
-80
1
0
10
CL = 10µF
CL = 1µF
CL = 0.1µF
100
1k
10k
100k
FREQUENCY (Hz)
FIGURE 29. ZOUT vs FREQUENCY
10
1M
10M
-100
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
FIGURE 30. RIPPLE REJECTION AT DIFFERENT CAPACITIVE LOADS
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)
3.0005
3.0050
2.9995
2.9940
3.0000
2.9830
VOUT (V)
VOUT (V)
2.9885
2.9775
2.9720
2.9665
Δ1mV
2.9995
2.9990
2.9610
VDROPOUT ~ 59mV
2.9555
2.9500
3.00
3.05
3.10
VIN (V)
3.15
2.9985
3.057
3.20
3.061
3.063
VIN (V)
3.065
3.067
3.069
FIGURE 32. DROPOUT ZOOMED (10mA SOURCED LOAD)
FIGURE 31. DROPOUT (1mA SOURCED LOAD)
3.002
3.059
-60
TYPICAL TEMPERATURE COEFFICIENT CURVE FOR 10 UNITS
+125°C
-70
3.001
-80
CURRENT (mA)
3.000
2.998
2.997
2.996
2.994
-55
-90
+25°C
-100
-110
-120
-55°C
-130
-140
2.995
-150
-35
-15
5
25
45
65
TEMPERATURE (°C)
85
105
125
145
-160
3.0
FIGURE 33. VOUT vs TEMPERATURE
3.5
4.0
4.5
VIN (V)
5.0
5.5
6.0
FIGURE 34. SHORT CIRCUIT TO GND
140
120
100
80
VOUT (µV)
VOUT (V)
2.999
60
40
20
0
-20
-40
-60
0
2
4
6
8
10
TIME (s)
FIGURE 35. VOUT vs NOISE, 0.1Hz TO 10Hz
11
FN7896.0
August 9, 2011
ISL21010
Typical Performance Characteristics Curves (VOUT = 3.3V)
VIN = 5.0V, IOUT = 0mA, TA = +25°C unless otherwise specified.
70
70
+125°C
60
60
UNIT 3
IDD (µA)
IDD (µA)
+25°C
50
UNIT 2
40
50
40
UNIT 1
-40°C
30
30
20
3.0
3.5
4.0
4.5
5.0
5.5
20
6.0
3.0
3.5
4.0
VIN (V)
400
600
300
400
UNIT 1
Δ VOUT (µV)
Δ VOUT (µV)
5.0
5.5
6.0
FIGURE 37. IIN vs VIN, OVER-TEMPERATURE
FIGURE 36. IIN vs VIN, THREE UNITS
200
4.5
VIN (V)
UNIT 2
100
+125°C
200
+25°C
0
0
-40°C
UNIT 3
-200
-100
-200
3.0
3.5
4.0
4.5
VIN (V)
5.0
5.5
-400
3.0
6.0
4.0
4.5
5.0
5.5
6.0
VIN (V)
FIGURE 38. LINE REGULATION, THREE UNITS
500mV STEP
VIN = 4.5V
3.5
FIGURE 39. LINE REGULATION OVER-TEMPERATURE
VIN = 4.5V
500mV STEP
VIN = 4.5V
VIN = 4.5V
100
AMPLITUDE (mV)
AMPLITUDE (mV)
200
0
-100
-200
250
500
750
1000
TIME (µs)
FIGURE 40. LINE TRANSIENT WITH 0.1µF LOAD
12
1250
100
0
-100
-200
250
500
750
1000
1250
TIME (µs)
FIGURE 41. LINE TRANSIENT RESPONSE WITH 10µF LOAD
FN7896.0
August 9, 2011
ISL21010
Typical Performance Characteristics Curves (VOUT = 3.3V)
VIN = 5.0V, IOUT = 0mA, TA = +25°C unless otherwise specified. (Continued)
2.0
1.5
-40°C
25mA
0mA
0.5
25mA @ 0.1µF
0.0
+25°C
-0.5
-1.0
-1.5
-2.0
-30
-25
SOURCING
25mA
20
+125°C
10
AMPLITUDE (mV)
Δ VOUT (mV)
1.0
-20
-15
-10
ILOAD (mA)
-5
0
SINKING
0
-10
-20
-30
200
5
400
600
800
1000
1200
1400
TIME (µs)
FIGURE 43. LOAD REGULATION OVER-TEMPERATURE
FIGURE 42. LOAD REGULATION OVER-TEMPERATURE
6
5
0mA
VOUT (V)
4
AMPLITUDE (mV)
5.0
0.0
1µF
3
2
1
-5.0
-10.0
200
VIN
0.1µF
1mA
0
400
600
800
1000
1200
-1
1400
0
50
100
150
TIME (µs)
200
250
300
TIME (µs)
FIGURE 44. LOAD TRANSIENT RESPONSE
FIGURE 45. TURN-ON TIME
4.5
0
4.0
-20
3.5
CL = 0.1µF
2.5
PSRR (dB)
ZOUT (Ω)
3.0
CL = 1µF
2.0
1.5
-40
-60
CL = 10µF
1.0
-80
0.5
0
10
CL = 10µF
CL = 1µF
CL = 0.1µF
100
1k
10k
100k
FREQUENCY (Hz)
FIGURE 46. ZOUT vs FREQUENCY
13
1M
10M
-100
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
FIGURE 47. RIPPLE REJECTION AT DIFFERENT CAPACITIVE LOADS
FN7896.0
August 9, 2011
ISL21010
Typical Performance Characteristics Curves (VOUT = 3.3V)
VIN = 5.0V, IOUT = 0mA, TA = +25°C unless otherwise specified. (Continued)
3.3000
3.310
3.305
3.300
3.295
3.2995
3.285
VOUT (V)
VOUT (V)
3.290
3.280
3.275
Δ1mV
3.2990
3.270
3.265
VDROPOUT ~58mV
3.2985
3.260
3.255
3.250
3.30
3.32
3.34
3.36
3.38
3.40
3.42
3.44
3.46
3.48
3.2980
3.350
3.50
3.355
3.360
VIN (V)
VIN (V)
3.365
3.370
FIGURE 49. DROPOUT ZOOMED (10mA SOURCED LOAD)
FIGURE 48. DROPOUT (1mA SOURCED LOAD)
3.305125
-70
3.302125
-90
CURRENT (mA)
3.299125
3.296125
3.290125
-55
+25°C
-110
-130
-55°C
-150
3.293125
-35
-15
5
25
45
65
85
105
125 145
-170
3.0
3.5
4.0
4.5
VIN (V)
TEMPERATURE (°C)
FIGURE 50. VOUT vs TEMPERATURE
5.0
5.5
6.0
FIGURE 51. SHORT CIRCUIT TO GND
140
120
100
80
VOUT (µV)
VOUT (V)
+125°C
60
40
20
0
-20
-40
-60
0
2
4
6
8
10
TIME (s)
FIGURE 52. VOUT vs NOISE, 0.1Hz TO 10Hz
14
FN7896.0
August 9, 2011
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.
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
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.
Typical Application Circuit
VIN
2.1V – 5.5V
10µF
0.1µF
ISL21010
VIN
VOUT
SENSE
VOUT
0.1µF - 10µF
GND
LOAD
FIGURE 53. KELVIN SENSED LOAD
15
FN7896.0
August 9, 2011
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
REVISION
8/9/11
FN7896.0
CHANGE
Initial Release
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
16
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
4
DETAIL "A"
C
L
0.13±0.05
2.37±0.27
1.30±0.10
4
C
L
0.950
0.435±0.065
0 - 8 deg.
0.20 M C
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.
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.
(1.25)
(0.95 typ.)
TYPICAL RECOMMENDED LAND PATTERN
17
FN7896.0
August 9, 2011