REF-01/REF-02
Precision
Voltage References
FEATURES
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DESCRIPTION
The REF-01/REF-02 are precision 10V and 5V bandgap
references which provide stable output voltages over a
wide range of operating conditions. Output voltage is ac-
curate to ±0.3% with a low 5ppm/°C typical temperature
coefficient. The REF-01 and REF-02 are excellent choices
for applications where low drift, moderate accuracy, low
power consumption and low cost are considerations.
The REF-02 includes a temperature output pin which
provides a linear voltage proportional to absolute tem-
perature.
For lower drift and higher accuracy references, please see
the LT1019 and LT1021 data sheets.
L,
LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
Trimmed Output ±0.3%
Low Drift—5ppm/°C Typ
Low Noise—3ppm
(P-P)
High Line Rejection
Temperature Output—REF-02
Low Supply Current 1.4mA Max
A/D and D/A Converters
Precision Regulators
Constant Current Sources
V/F Converters
Bridge Excitation
APPLICATIONS
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TYPICAL APPLICATION
Ultra Linear Strain Gauge Amplifier
15V
412Ω*
1/2W
REF-02
IN
OUT
GND
5V
350Ω
BRIDGE
A1
†
LT307
R2
20k
R4
20k
R3
2M
OUTPUT VOLTAGE (NORMALIZED)
Output Voltage Temperature Drift
1.003
1.002
1.001
1.000
0.999
0.998
FULL TEMP RANGE BOX GUARANTEED FOR
REF-01A AND REF-02A (8.5ppm/°C)
50
25
75
0
TEMPERATURE (°C)
100
125
TA01b
0°C TO 70°C BOX GUARANTEED FOR
REF-01E AND REF-02E (8.5ppm/°C)
*REDUCES REFERENCE AND AMPLIFIER LOADING.
**IF R6 = R3, BRIDGE IS NOT LOADED BY R2 AND R4.
†
A1 V
OS
AND DRIFT ARE NOT CRITICAL.
–
ACTIVE
ELEMENT
–5V
357Ω*
1/2W
–15V
+
–
A2
LT1001
GAIN = 100
+
R6
2M**
TA01a
R5
2M
0.997
–50 –25
ref012fd
1
REF-01/REF-02
ABSOLUTE MAXIMUM RATINGS
REF-01/REF-02 A, E, H .............................................40V
REF-01C/REF-02C.....................................................30V
Power Dissipation .............................................. 500mW
Output Short-Circuit Duration
To Ground .................................................... Indefinite
To V
IN
≤ 16V ................................................ Indefinite
To V
IN
> 16V ............................................Not Allowed
Storage Temperature Range ..................– 65°C to 150°C
Operating Temperature
REF-01/REF-02, REF-01A/REF-02A... –55°C to 125°C
REF-01E/REF-02E, REF-01H/REF-02H,
REF-01C/REF-02C, REF-01D/REF-02D .... 0°C to 70°C
Lead Temperature (Soldering, 10 sec)................... 300°C
PIN CONFIGURATION
TOP VIEW
NC
*
8
NC
*
1
A
INPUT 2
TEMP
**
3
4
GND (CASE)
H PACKAGE
8-LEAD TO-5 METAL CAN
T
JMAX
= 150°C,
θ
JA
= 150°C/W,
θ
JC
= 45°C/W
*INTERNALLY CONNECTED. DO
NOT CONNECT EXTERNALLY.
**DO NOT CONNECT ON REF-01
–
+ +
B
–
6 OUTPUT
5 TRIM
N8 PACKAGE
8-LEAD PLASTIC DIP
T
JMAX
= 100°C,
θ
JA
= 130°C/W
*INTERNALLY CONNECTED. DO
NOT CONNECT EXTERNALLY.
**DO NOT CONNECT ON REF-01
J8 PACKAGE
8-LEAD CERDIP
T
JMAX
= 150°C,
θ
JA
= 100°C/W
7 NC
*
NC* 1
INPUT 2
TEMP** 3
GND 4
8
7
6
5
NC*
NC*
OUTPUT
TRIM
TOP VIEW
ORDER INFORMATION
LEAD FREE FINISH
REF01EN8#PBF
REF01HN8#PBF
REF01CN8#PBF
REF02EN8#PBF
REF02HN8#PBF
REF02CN8#PBF
REF02DN8#PBF
REF01AH#PBF
REF01H#PBF
REF01EH#PBF
REF01HH#PBF
REF01CH#PBF
REF02H#PBF
REF02EH#PBF
REF02HH#PBF
REF02CH#PBF
PART MARKING
REF01EN8
REF01HN8
REF01CN8
REF02EN8
REF02HN8
REF02CN8
REF02DN8
PACKAGE DESCRIPTION
8-Lead Plastic Dip
8-Lead Plastic Dip
8-Lead Plastic Dip
8-Lead Plastic Dip
8-Lead Plastic Dip
8-Lead Plastic Dip
8-Lead Plastic Dip
8-Lead TO-5 Metal Can
8-Lead TO-5 Metal Can
8-Lead TO-5 Metal Can
8-Lead TO-5 Metal Can
8-Lead TO-5 Metal Can
8-Lead TO-5 Metal Can
8-Lead TO-5 Metal Can
8-Lead TO-5 Metal Can
8-Lead TO-5 Metal Can
TEMPERATURE RANGE
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
–55°C to 125°C
–55°C to 125°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
–55°C to 125°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
ref012fd
2
REF-01/REF-02
ORDER INFORMATION
LEAD FREE FINISH
REF02DH#PBF
REF01EJ8#PBF
REF01HJ8#PBF
REF01CJ8#PBF
REF02EJ8#PBF
REF02HJ8#PBF
REF02CJ8#PBF
REF02DJ8#PBF
PART MARKING
PACKAGE DESCRIPTION
8-Lead TO-5 Metal Can
8-Lead Cerdip
8-Lead Cerdip
8-Lead Cerdip
8-Lead Cerdip
8-Lead Cerdip
8-Lead Cerdip
8-Lead Cerdip
OBSOLETE
Consider the N Package for Alternate Source
LEAD BASED FINISH
REF02AH
REF02AJ8
PART MARKING
REF02AH
REF02AJ8
PACKAGE DESCRIPTION
8-Lead TO-5 Metal Can
8-Lead Cerdip
TEMPERATURE RANGE
–55°C to 125°C
–55°C to 125°C
TEMPERATURE RANGE
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS
SYMBOL
V
O
PARAMETER
Output Voltage
Output Adjustment Range
e
nP-P
V
IN
ΔV
OUT
ΔV
IN
ΔV
OUT
ΔI
OUT
I
Q
I
OUT
I
SC
V
T
Output Voltage Noise
Input Voltage Range
Line Regulation
(Note 2)
Load Regulation
(Note 2)
Quiescent Supply Current
Load Current
Sink Current
Short-Circuit Current
Temperature Voltage Output
V
O
= 0V
(Note 3)
(V
OUT
+ 3V) ≤ V
IN
≤ 33V
I
L
= 0mA to 10mA
No Load
CONDITIONS
I
L
= 0mA
R
P
= 10kΩ
0.1Hz to 10Hz (Note 7)
V
IN
= 15V, T
A
= 25°C unless otherwise noted.
REF-01A/E, REF-02A/E
MIN
TYP
MAX
REF-01
REF-02
REF-01
REF-02
REF-01
REF-02
REF-01
REF-02
12
7
0.0001
REF-01
REF-02
10
–0.3
REF-02 Only
0.0005
0.001
0.65
20
–20
25
620
9.97
4.985
±3
±3
10
5
5, –27
5, –13
20
10
40
40
0.01
0.008
0.01
1.4
10
–0.3
12
7
0.0001
0.0005
0.001
0.65
20
–20
25
620
10.03
5.015
REF-01H, REF-02H
MIN
TYP
MAX
9.95
4.975
±3
±3
10
5
5, –27
5, –13
20
10
40
40
0.01
0.01
0.01
1.4
10.05
5.025
UNITS
V
V
%
%
μV
P-P
μV
P-P
V
V
%/V
%/mA
%/mA
mA
mA
mA
mA
mV
V
IN
= 15V, T
A
= 25°C unless otherwise noted.
SYMBOL
V
O
PARAMETER
Output Voltage
Output Adjustment Range
e
nP-P
Output Voltage Noise
CONDITIONS
I
L
= 0mA
R
P
= 10kΩ
0.1Hz to 10Hz (Note 7)
REF-01
REF-02
REF-01
REF-02
REF-01
REF-02
REF-01C, REF-02C
MIN
TYP
MAX
9.9
4.95
±2.7
10
5
5, –27
5, –13
30
12
10.1
5.05
MIN
4.9
±2
REF-02D
TYP
MAX
5
5, –13
12
5.1
UNITS
V
V
%
%
μV
P-P
μV
P-P
ref012fd
3
REF-01/REF-02
ELECTRICAL CHARACTERISTICS
SYMBOL
ΔV
OUT
ΔV
IN
ΔV
OUT
ΔI
OUT
I
Q
I
OUT
I
SC
V
T
PARAMETER
Line Regulation
(Note 2)
Load Regulation
(Note 2)
Quiescent Supply Current
Load Current
Sink Current
Short-Circuit Current
Temperature Voltage Output
V
O
= 0V
(Note 3)
REF-02 Only
CONDITIONS
(V
OUT
+ 3V) ≤ V
IN
≤ 33V
I
L
= 0mA to 8mA
I
L
= 0mA to 4mA
No Load
8
–0.2
V
IN
= 15V, T
A
= 25°C unless otherwise noted.
REF-01C, REF-02C
MIN
TYP
MAX
0.0001 0.015
0.0005 0.015
0.001
0.65
20
20
25
620
1.6
8
–0.2
0.65
20
20
25
620
0.04
2
MIN
REF-02D
TYP
MAX
0.0001
0.04
UNITS
%/V
%/mA
%/mA
mA
mA
mA
mA
mV
The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C.
V
IN
= 15V, –55°C ≤ T
A
≤ ±125°C for REF-01A/REF-02A and REF-01/REF-02, 0°C ≤ T
A
≤ 70°C for REF-01E/REF-02E and
REF-01H/REF-02H, I
L
= 0mA unless otherwise noted.
SYMBOL
ΔV
ΔT
TC
PARAMETER
Output Voltage Change With
Temperature (Notes 4, 5)
Output Voltage Temperature
Coefficient
Change in V
O
Temperature
Coefficient With Output
Adjustment
ΔV
OUT
ΔV
IN
ΔV
OUT
ΔI
OUT
Line Regulation
(V
OUT
+ 3V) ≤ V
IN
≤ 33V (Note 2)
Load Regulation
(I
L
= 0mA to 8mA) (Note 2)
Temperature Voltage Output
Temperature Coefficient
CONDITIONS
0°C ≤ T
A
≤ 70°C
–55°C ≤ T
A
≤ 125°C
(Note 6)
R
P
= 10kΩ
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REF-01A/E, REF-02A/E
MIN
TYP
MAX
0.02
0.09
5
0.5
0.06
0.15
8.5
REF-01H/ REF-02H
MIN
TYP
MAX
0.035
0.144
8
0.5
0.17
0.45
25
UNITS
%
%
ppm/°C
ppm/%
0°C ≤ T
A
≤ 70°C
–55°C ≤ T
A
≤ 125°C
0°C ≤ T
A
≤ 70°C
–55°C ≤ T
A
≤ 125°C
(Note 3) REF-02
l
l
l
l
l
0.0001
0.0001
0.002
0.002
2.1
0.012
0.015
0.01
0.012
0.0001
0.0001
0.002
0.002
2.1
0.012
0.015
0.012
0.015
%/V
%/V
%/mA
%/mA
mV/°C
The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C.
V
IN
= 15V, 0°C ≤ T
A
≤ 70°C and I
L
= 0mA unless otherwise noted.
SYMBOL
ΔV
ΔT
TC
PARAMETER
Output Voltage Change With
Temperature
Output Voltage Temperature
Coefficient
Change in V
O
Temperature
Coefficient With Output
Adjustment
ΔV
OUT
ΔV
IN
ΔV
OUT
ΔI
OUT
Line Regulation
(Note 2)
Load Regulation
(Note 2)
Temperature Voltage Output
Temperature Coefficient
CONDITIONS
(Notes 4, 5)
(Note 6)
R
P
= 10kΩ
l
l
l
REF-01C, REF-02C
MIN
TYP
MAX
0.45
8
0.5
65
REF-02D
MIN
TYP
MAX
1.7
8
0.5
250
UNITS
%
ppm/°C
ppm/%
V
IN
= 8V to 30V
I
L
= 0mA to 5mA
(Note 3) REF-02
l
l
l
0.0001
0.002
2.1
0.018
0.018
0.0001
0.002
2.1
0.05
0.05
%/V
%/mA
mV/°C
ref012fd
4
REF-01/REF-02
ELECTRICAL CHARACTERISTICS
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
Line and load regulation specifications include the effect of self
heating.
Note 3:
Limit current in or out of Pin 3 to 50nA and capacitance on Pin 3
to 30pF
.
Note 4:
ΔV
is defined as the absolute difference between the maximum
output voltage and the minimum output voltage over the specified
temperature range expressed as a percentage of nominal output.
–V
V
ΔV
=
MAX MIN •100
VOUT
Note 5:
ΔV
specification applies trimmed or untrimmed.
Note 6:
TC is defined as
ΔV
divided by the temperature range, i.e.,
TC
=
Δ
V
TMAX – TMIN
Note 7:
0.1Hz to 10Hz noise cannot be 100% tested on modern high speed
test equipment, so Linear Technology does not put a guaranteed maximum
specification on this parameter for standard units. 100% bench testing of
0.1Hz to 10Hz noise is available on special request. To ensure low output
noise, Linear Technology
does
100% test 10Hz to 1kHz noise. Consult
factory for details.
PACKAGE DESCRIPTION
H Package
8-Lead TO-5 Metal Can (.230 Inch PCD)
(Reference LTC DWG # 05-08-1321)
.335 – .370
(8.509 – 9.398)
DIA
.305 – .335
(7.747 – 8.509)
.040
(1.016)
MAX
.050
(1.270)
MAX
GAUGE
PLANE
.165 – .185
(4.191 – 4.699)
REFERENCE
PLANE
.500 – .750
(12.700 – 19.050)
SEATING
PLANE
.010 – .045*
(0.254 – 1.143)
.016 – .021**
(0.406 – 0.533)
.027 – .045
(0.686 – 1.143)
45°
.028 – .034
(0.711 – 0.864)
PIN 1
.230
(5.842)
TYP
.110 – .160
(2.794 – 4.064)
INSULATING
STANDOFF
*LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE
AND THE SEATING PLANE
.016 – .024
**FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS
(0.406 – 0.610)
H8 (TO-5) 0.230 PCD 0204
ref012fd
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