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REF-01/REF-02
1
ref012fd
TYPICAL APPLICATION
DESCRIPTION
Precision
Voltage References
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
FEATURES
APPLICATIONS
15V
–15V
412Ω*
1/2W
357Ω*
1/2W
5V
350Ω
BRIDGE
ACTIVE
ELEMENT
R2
20k
R4
20k
R5
2M
R6
2M**
R3
2M
–
+
–
+
GAIN = 100
A2
LT1001
A1
†
LT307
IN
OUT
GND
REF-02
REDUCES REFERENCE AND AMPLIFIER LOADING.
IF R6 = R3, BRIDGE IS NOT LOADED BY R2 AND R4.
A1 V
OS
AND DRIFT ARE NOT CRITICAL.
*
**
†
TA01a
–5V
n
A/D and D/A Converters
n
Precision Regulators
n
Constant Current Sources
n
V/F Converters
n
Bridge Excitation
n
Trimmed Output ±0.3%
n
Low Drift—5ppm/°C Typ
n
Low Noise—3ppm
(P-P)
n
High Line Rejection
n
Temperature Output—REF-02
n
Low Supply Current 1.4mA Max
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
coeffi cient. 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.
Ultra Linear Strain Gauge Amplifi er
Output Voltage Temperature Drift
TEMPERATURE (°C)
–50
OUTPUT VOLTAGE (NORMALIZED)
1.003
1.002
1.001
1.000
0.999
0.998
0.997
25 75
TA01b
–25 0
50 100 125
0°C TO 70°C BOX GUARANTEED FOR
REF-01E AND REF-02E (8.5ppm/°C)
FULL TEMP RANGE BOX GUARANTEED FOR
REF-01A AND REF-02A (8.5ppm/°C)
