CALCULATING AVERAGE TEMPERATURE COEFFICIENT (TC)
ppm % mV
00
0
-10
5000 0.5
6VREF
6T
0 15 30 45 60 75 90 105
Junction Temperature (°C)
0.07 mV/°C
0.003 %/°C
27 ppm/°C
• TC in mV/°C =
6VREF(mV)
6TA
( ) • TC in %/°C =
6VREF
6VREF at 25°C
x 100
6TA
( ) • TC in ppm/°C =
6VREF
6VREF at 25°C
x 106
6TA
Figure 1. VREFVS Temperature.
TEST CIRCUITS
VIN
VKA= VREF
VIN
VKA
VIN
IREF
IK
R1
IREF
IK
(VREF)
R2
VKA
IK (OFF)
Figure 2. Test Circuit for VKA= V REF Figure 3. Test Circuit for VKA> V REF Figure 4. Test Circuit for IKOFF
Mar13-07
SPX1431 Precision Adjustable Shunt Regulator
© 2007 Sipex Corporation