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REF3125数据手册

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ref3125

15ppm/°C  Max,  100μA,  SOT23-3

SERIES  VOLTAGE  REFERENCE

REF3112
REF3120
REF3125
REF3130
REF3133
REF3140
SBVS046C – DECEMBER 2003 – REVISED FEBRUARY 2006
15ppm/
°
C Max, 100
µ
A, SOT23-3
SERIES VOLTAGE REFERENCE
FEATURES
q
MicroSIZE
PACKAGE: SOT23-3
q
LOW DROPOUT: 5mV
q
HIGH OUTPUT CURRENT:
±
10mA
q
HIGH ACCURACY: 0.2% max
q
LOW I
Q
: 115
µ
A max
q
EXCELLENT SPECIFIED DRIFT PERFORMANCE:
15ppm/
°
C (max) from 0
°
C to +70
°
C
20ppm/
°
C (max) from –40
°
C to +125
°
C
DESCRIPTION
The REF31xx is a family of precision, low power, low dropout,
series voltage references available in the tiny SOT23-3 pack-
age.
The REF31xx’s small size and low power consumption
(100µA typ) make it ideal for portable and battery-powered
applications. The REF31xx does not require a load capacitor,
but is stable with any capacitive load and can sink/source up
to 10mA of output current.
Unloaded, the REF31xx can be operated on supplies down
to 5mV above the output voltage. All models are specified for
the wide temperature range of –40°C to +125°C.
APPLICATIONS
q
PORTABLE, BATTERY-POWERED EQUIPMENT
q
DATA ACQUISITION SYSTEMS
q
MEDICAL EQUIPMENT
q
HAND-HELD TEST EQUIPMENT
PRODUCT
REF3112
REF3120
REF3125
REF3130
REF3133
REF3140
IN
1
REF3112
REF3120
REF3125
REF3130
REF3133
REF3140
SOT23-3
VOLTAGE (V)
1.25
2.048
2.5
3.0
3.3
4.096
3
GND
OUT
2
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright © 2003-2006, Texas Instruments Incorporated
www.ti.com
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage, V+ to V– ................................................................... 7.0V
Output Short-Circuit ................................................................. Continuous
Operating Temperature .................................................. –55°C to +135°C
Storage Temperature ..................................................... –65°C to +150°C
Junction Temperature .................................................................... +150°C
NOTES: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade
device reliability. These are stress ratings only, and functional operation of the
device at these, or any other conditions beyond those specified, is not implied.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instru-
ments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
PACKAGE/ORDERING INFORMATION
(1)
PACKAGE
DESIGNATOR
DBZ
SPECIFIED
TEMPERATURE
RANGE
–40°C to +125°C
PACKAGE
MARKING
R31A
ORDERING
NUMBER
REF3112AIDBZT
REF3112AIDBZR
REF3120AIDBZT
REF3120AIDBZR
REF3125AIDBZT
REF3125AIDBZR
REF3130AIDBZT
REF3130AIDBZR
REF3133AIDBZT
REF3133AIDBZR
REF3140AIDBZT
REF3140AIDBZR
TRANSPORT
MEDIA, QUANTITY
Tape and Reel, 250
Tape and Reel, 3000
Tape and Reel, 250
Tape and Reel, 3000
Tape and Reel, 250
Tape and Reel, 3000
Tape and Reel, 250
Tape and Reel, 3000
Tape and Reel, 250
Tape and Reel, 3000
Tape and Reel, 250
Tape and Reel, 3000
PRODUCT
REF3112
PACKAGE-LEAD
SOT23-3
"
REF3120
"
SOT23-3
"
DBZ
"
–40°C to +125°C
"
R31B
"
REF3125
"
SOT23-3
"
DBZ
"
–40°C to +125°C
"
R31C
"
REF3130
"
SOT23-3
"
DBZ
"
–40°C to +125°C
"
R31E
"
REF3133
"
SOT23-3
"
DBZ
"
–40°C to +125°C
"
R31F
"
REF3140
"
SOT23-3
"
DBZ
"
–40°C to +125°C
"
R31D
"
"
"
"
"
NOTE: (1) (1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at
www.ti.com.
ELECTRICAL CHARACTERISTICS
Boldface
limits apply over the specified temperature range,
T
A
= –40
°
C to +125
°
C.
At T
A
= +25°C, I
LOAD
= 0mA, V
IN
= 5V, unless otherwise noted.
REF31xx
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
REF3112
(1)
- 1.25V
OUTPUT VOLTAGE
Initial Accuracy
NOISE
Output Voltage Noise
Voltage Noise
V
OUT
1.2475
–0.2
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
1.25
1.2525
0.2
V
%
µV
PP
µVrms
17
24
REF3120 – 2.048
OUTPUT VOLTAGE
Initial Accuracy
NOISE
Output Voltage Noise
Voltage Noise
V
OUT
2.0439
–0.2
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
2.048
2.0521
0.2
V
%
µV
PP
µVrms
27
39
REF3125 – 2.5V
OUTPUT VOLTAGE
Initial Accuracy
NOISE
Output Voltage Noise
Voltage Noise
V
OUT
2.4950
–0.2
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
2.50
2.5050
0.2
V
%
µV
PP
µVrms
33
48
2
REF3112, 3120, 3125, 3130, 3133, 3140
www.ti.com
SBVS046C
ELECTRICAL CHARACTERISTICS
Boldface
limits apply over the specified temperature range,
T
A
= –40
°
C to +125
°
C.
At T
A
= +25°C, I
LOAD
= 0mA, V
IN
= +5V, unless otherwise noted.
REF31xx
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
REF3130 – 3.0V
OUTPUT VOLTAGE
Initial Accuracy
NOISE
Output Voltage Noise
Voltage Noise
V
OUT
2.9940
–0.2
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
3.0
3.0060
0.2
V
%
µV
PP
µVrms
39
57
REF3133 – 3.3V
OUTPUT VOLTAGE
Initial Accuracy
NOISE
Output Voltage Noise
Voltage Noise
V
OUT
3.2934
–0.2
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
3.30
3.3066
0.2
V
%
µV
PP
µVrms
43
63
REF3140 – 4.096V
OUTPUT VOLTAGE
Initial Accuracy
NOISE
Output Voltage Noise
Voltage Noise
V
OUT
4.0878
–0.2
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
4.096
4.1042
0.2
V
%
µV
PP
µVrms
53
78
REF3112, REF3120, REF3125, REF3130, REF3133, REF3140
OUTPUT VOLTAGE TEMP DRIFT
(2)
dV
OUT
/dT
0
°
C
≤
T
A
≤
+70
°
C
–40
°
C
≤
T
A
≤
+125
°
C
0-1000h
+ 0.05
(1)
≤
V
IN
≤
5.5V
5
10
15
20
ppm/
°
C
ppm/
°
C
ppm
ppm/V
µV/mA
µV/mA
LONG-TERM STABILITY
LINE REGULATION
LOAD
Sourcing
Sinking
THERMAL HYSTERESIS
(4)
First Cycle
Additional Cycles
DROPOUT VOLTAGE
(1)
OUTPUT CURRENT
SHORT-CIRCUIT CURRENT
Sourcing
Sinking
TURN-ON SETTLING TIME
POWER SUPPLY
Voltage
Quiescent Current
Over Temperature
TEMPERATURE RANGE
Specified Range
Operating Range
Storage Range
Thermal Resistance
SOT23-3 Surface-Mount
NOTES: (1)
(2)
(3)
(4)
(5)
V
S
I
Q
V
IN
– V
OUT
I
LOAD
I
SC
50
40
to 0.1% at V
IN
= +5V with C
L
= 0
I
L
= 0
V
REF
+ 0.05
(1)
100
115
–40
–55
–65
5.5
115
135
+125
+135
+150
336
V
µA
µ
A
°C
°C
°C
°C/W
400
mA
mA
µs
–10
REGULATION
(3)
dV
OUT
/dI
LOAD
0mA < I
LOAD
< 10mA,
V
IN
= V
REF
+ 250mV
(1)
–10mA < I
LOAD
< 0mA,
V
IN
= V
REF
+ 100mV
(1)
dT
100
25
5
50
10
ppm
ppm
mV
mA
10
20
30
50
V
REF
70
20
65
θ
JA
Minimum supply voltage for REF3112 is 1.8V.
Box Method used to determine temperature drift.
Typical value of load regulation reflects measurements using force and sense contacts; see the
Load Regulation
section.
Thermal hysteresis is explained in more detail in the
Applications Information
section of this data sheet.
For I
L
> 0, see the Typical Characteristic curves.
REF3112, 3120, 3125, 3130, 3133, 3140
SBVS046C
3
www.ti.com
TYPICAL CHARACTERISTICS
At T
A
= +25°C, V
IN
= +5V power supply, REF3125 is used for typical characteristics, unless otherwise noted.
TEMPERATURE DRIFT (0°C to +70°C)
18
16
Percentage of Units
TEMPERATURE DRIFT (–40°C to +125°C)
25
12
10
8
6
4
2
0
0
1
2
3
4
5
6
8
9 10 11 12 13 14 15 16
Drift (ppm/°C)
Percentage of Units
14
20
15
10
5
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
Drift (ppm/°C)
OUTPUT VOLTAGE vs TEMPERATURE
0.16
0.14
DROPOUT VOLTAGE vs LOAD CURRENT
120
100
Dropout Voltage (mV)
0.12
Output Drift (%)
0.10
0.08
0.06
0.04
0.02
0
−0.02
−0.04
80
60
40
20
0
−60
−40
−20
0
20
40
60
80
100 120 140
–15
–10
–5
0
5
10
15
Temperature (°C)
Load Current (mA)
QUIESCENT CURRENT vs TEMPERATURE
120
100
Quiescent Current (µA)
Output Resistance (Ω)
OUTPUT IMPEDANCE vs FREQUENCY
100
10
80
60
40
20
0
–60 –40
–20
0
20
40
60
80
100
120 140
Temperature (°C)
1
0.1
0.01
1
10
100
1k
Frequency (Hz)
10k
100k
1M
4
REF3112, 3120, 3125, 3130, 3133, 3140
www.ti.com
SBVS046C
TYPICAL CHARACTERISTICS
(Cont.)
At T
A
= +25°C, V
IN
= +5V power supply, REF3125 is used for typical characteristics, unless otherwise noted.
PSRR vs FREQUENCY
90
OUTPUT vs SUPPLY
2.505
+125°C
2.504
2.503
Power-Supply Rejection Ratio (dB)
80
70
Output (V)
60
50
40
30
20
10
0
1
10
100
1k
10k
100k
Frequency (Hz)
2.502
2.501
2.500
2.499
2.498
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
Supply (V)
+25°C
−40°C
OUTPUT VOLTAGE vs LOAD CURRENT
2.505
2.504
Output Voltage (V)
2.503
2.502
2.501
2.500
2.499
2.498
2.497
–15
–10
–5
0
5
10
15
+25°C
−40°C
1V/div
STEP RESPONSE, C
L
= 0, 5V STARTUP
+125°C
5V/div
V
IN
V
OUT
100µs/div
Load Current (mA)
0.1Hz TO 10Hz NOISE
20
0
–20
Drift (ppm)
10µV/div
–40
–60
–80
–100
–120
400ms/div
0
REF3112 LONG TERM STABILITY
100 200 300 400
500
600 700 800 900 1000
Time (Hrs)
REF3112, 3120, 3125, 3130, 3133, 3140
SBVS046C
5
www.ti.com
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