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Linear Technology - Precision Voltage References

Numéro de référence REF-02
Description Precision Voltage References
Fabricant Linear Technology 
Logo Linear Technology 





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REF-02 fiche technique
FEATURES
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
APPLICATIONS
n A/D and D/A Converters
n Precision Regulators
n Constant Current Sources
n V/F Converters
n Bridge Excitation
REF-01/REF-02
Precision
Voltage References
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.
TYPICAL APPLICATION
15V 412Ω*
1/2W
5V
REF-02
IN OUT
GND
Ultra Linear Strain Gauge Amplifier
A1
LT307
350Ω
BRIDGE
ACTIVE
ELEMENT
R3
2M
R2
20k
R4 A2
20k LT1001
+
R5
2M
R6
2M**
*REDUCES REFERENCE AND AMPLIFIER LOADING.
**IF R6 = R3, BRIDGE IS NOT LOADED BY R2 AND R4.
A1 VOS AND DRIFT ARE NOT CRITICAL.
–5V
357Ω*
1/2W
–15V
GAIN = 100
TA01a
Output Voltage Temperature Drift
1.003
1.002
1.001
0°C TO 70°C BOX GUARANTEED FOR
REF-01E AND REF-02E (8.5ppm/°C)
1.000
0.999
0.998
FULL TEMP RANGE BOX GUARANTEED FOR
REF-01A AND REF-02A (8.5ppm/°C)
0.997
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
TA01b
ref012fd
1

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