REF3012, REF3020,
REF3025, REF3030,
REF3033, REF3040
High Precision, Low Drift,
CMOS Voltage Reference
The REF30xx family of voltage references provides accurate
voltage regulation with a maximum temperature drift of 50 ppm/°C.
The REF30xx can source or sink up to 10 mA of load current. It is
supplied in a space−saving SOT−23 package, and for most
applications can forgo the use of an output bypass capacitor.
Features
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•
Reference Voltages:
•
•
•
•
•
•
SOT23−3
TB SUFFIX
CASE 527AG
1.25 V, 2.048 V, 2.5 V, 3.0 V, 3.3 V, 4.096 V
High Accuracy:
±0.2%
Low Quiescent Current: 30
mA
max
High Output Current: 10 mA Sourced or Sunk
Maximum 50 ppm/°C Temperature Drift over the Specified Range of
−40°C
to +85°C
SOT−23 3−Lead Package
This Device is Pb−Free, Halogen Free/BFR Free, and RoHS
Compliant
Battery Powered Systems
A/D and D/A Converters
Precision Regulator Systems
Power Supplies
Portable Medical Equipment
MARKING DIAGRAM
3
S3YM
1
2
Typical Applications
•
•
•
•
•
S3 = Specific Device Code
Y = Production Year
=
(Last Digit)
M = Production Month
=
(1
−
9, O, N, D)
PIN CONNECTIONS
1
V
IN
3
V
OUT
2
V
OUT
(Top View)
GND
V
IN
C
0.1
mF
V
IN
V
OUT
REF30xx
GND
PIN FUNCTIONS
Figure 1. Application Circuit
Pin No.
1
2
3
Pin Name
V
IN
V
OUT
GND
Function
Supply Voltage Input
Output Voltage
Ground
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
©
Semiconductor Components Industries, LLC, 2011
April, 2011
−
Rev. 0
1
Publication Order Number:
REF3012/D
REF3012, REF3020, REF3025, REF3030, REF3033, REF3040
Table 1. ORDERING INFORMATION
Device
REF3012TB−GT3
REF3020TB−GT3
REF3025TB−GT3
REF3030TB−GT3
REF3033TB−GT3
REF3040TB−GT3 (Note 1)
Output Voltage
1.25 V
2.048 V
2.5 V
3.0 V
3.3 V
4.096 V
S3YM
SOT−23
3000 / Tape & Reel
Marking
Package
Shipping
†
1. Contact factory for availability of these and other custom voltages.
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
Table 2. ABSOLUTE MAXIMUM RATINGS
(Note 2)
Rating
V
IN
Storage Temperature Range
Junction Temperature Range
Value
6.5
−55
to +125
+150
Unit
V
_C
_C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
2. Maximum terminal current is bounded by the maximum current handling of the switches, maximum power dissipation of the package.
Table 3. RECOMMENDED OPERATING CONDITIONS
Rating
Temperature Range
Value
−40
to +85
Unit
_C
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REF3012, REF3020, REF3025, REF3030, REF3033, REF3040
Table 4. ELECTRICAL CHARACTERISTICS
Parameter
Output Voltage
(V
IN
= 3.0 V, I
OUT
= 0 mA, C
OUT
= 0.001
mF,
−40°C
to +85°C unless specified otherwise.)
Test Conditions
REF3012
REF3020
REF3025
REF3030 (V
IN
= 5.0 V)
REF3033 (V
IN
= 5.0 V)
REF3040 (V
IN
= 5.0 V)
Symbol
V
out
Min
1.2475
2.044
2.495
2.994
3.294
4.088
−0.2
f = 0.1 Hz to 10 Hz
2.7 V
≤
V
IN
≤
5.5 V
−40°C
≤
T
A
≤
+85°C
0−1000 h
V
IN
= 3 V
0 mA < I
LOAD
< 10 mA
−10
mA < I
LOAD
< 0 mA
ΔT
A
= 125°C
VOUT = 2.5 V
T
A
= 25°C
OUT pin shorted to GND
OUT pin shorted to IN
To 0.1% at V
IN
= 5 V with C
L
= 0
I
L
= 0
I
L
= 0
V
S
I
Q
−40
−40
−55
2.7
dV
OUT
/
dI
LOAD
dT
V
IN
−
V
OUT
I
SC
50
20
2
5.5
30
+85
+85
+125
60
40
ms
V
mA
°C
dV
OUT
/dT
50
30
20
50
100
150
100
1
2.5
250
350
ppm
mV
mA
100
50
Typ
1.250
2.048
2.500
3.000
3.300
4.096
Max
1.2525
2.052
2.505
3.006
3.306
4.104
+0.2
Unit
V
Output Voltage Accuracy
Output Voltage Noise (Note 3)
Line Regulation
Output voltage temp Drift
Long−Term Stability (Note 3)
Load Regulation
%
mVp−p
mV/V
ppm/°C
ppm
mV/mA
Thermal Hysteresis (Note 3)
Dropout Voltage
Short−Circuit Current (Note 3)
Turn On Settling Time
Power Supply Voltage
Supply Current
Temperature Range
Specified Range
Operating Range
Storage Range
3. Guaranteed by design.
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REF3012, REF3020, REF3025, REF3030, REF3033, REF3040
TYPICAL CHARACTERISTICS
1.2508
1.2506
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
1.2504
1.2502
1.2500
1.2498
1.2496
1.2494
1.2492
−40
Unit 2
Unit 1
−15
10
35
60
85
1.2498
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Unit 3
1.2501
Unit 1
1.2502
1.2500
Unit 2
Unit 3
1.2499
TEMPERATURE (°C)
INPUT VOLTAGE (V)
Figure 2. Output Voltage vs. Temperature
50
−40°C
+85°C
25
+25°C
OUTPUT VOLTAGE CHANGE (mV)
OUTPUT VOLTAGE CHANGE (mV)
2.0
1.5
1.0
0.5
0
−0.5
−1.0
−1.5
−10
Figure 3. Output Voltage vs. Supply Voltage
(No Load)
+85°C
+25°C
−40°C
0
−25
SINKING
−5
0
SOURCING
5
10
2.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
Figure 4. Line Regulation over Temperature
0
−10
−20
PSRR (dB)
−30
−40
−50
−60
−70
−80
−90
1
10
100
1k
100 nF Load
1 nF Load
10 nF Load
No Load
OUTPUT IMPEDANCE (W)
160
140
120
100
80
60
40
20
1M
0
1
Figure 5. Load Regulation over Temperature
No Load
1 nF Load
10 nF Load
100 nF Load
10 k
100 k
10
100
1k
10 k
100 k
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 6. Power−Supply Rejection Ratio vs.
Frequency
Figure 7. Output Impedance vs. Frequency
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REF3012, REF3020, REF3025, REF3030, REF3033, REF3040
TYPICAL CHARACTERISTICS
Figure 8. Step Response, C
L
= 0, 3 V Startup
Figure 9. 0.1 Hz to 10 Hz Noise
Figure 10. Line Transient Response
Figure 11. Line Transient Response
with Cap. Load
Figure 12. Load Transient (I
L
= 50
mA)
Figure 13. Load Transient (I
L
= 10 mA)
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