REF-01/REF-02
Precision
Voltage References
FEATURES
s
s
s
s
s
s
DESCRIPTIO
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
APPLICATIO S
s
s
s
s
s
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
accurate 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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
A/D and D/A Converters
Precision Regulators
Constant Current Sources
V/F Converters
Bridge Excitation
TYPICAL APPLICATIO
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 Temperature Drift
1.003
OUTPUT VOLTAGE (NORMALIZED)
–
A2
LT1001
GAIN = 100
+
R6
2M**
TA01a
ACTIVE
ELEMENT
R5
2M
–5V
*REDUCES REFERENCE AND AMPLIFIER LOADING.
**IF R6 = R3, BRIDGE IS NOT LOADED BY R2 AND R4.
†
A1 V
OS
AND DRIFT ARE NOT CRITICAL.
357Ω*
1/2W
–15V
U
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
U
–
+
U
0°C TO 70°C BOX GUARANTEED FOR
REF-01E AND REF-02E (8.5ppm/°C)
0.997
–50 –25
1
ETC [ ETC ]
