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KIA431AF Fiches technique(PDF) 4 Page - KEC(Korea Electronics)

No de pièce KIA431AF
Description  BIPOLAR LINEAR INTEGRATED CIRCUIT
Download  8 Pages
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Fabricant  KEC [KEC(Korea Electronics)]
Site Internet  http://www.keccorp.com
Logo KEC - KEC(Korea Electronics)

KIA431AF Fiches technique(HTML) 4 Page - KEC(Korea Electronics)

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2012. 3. 20
4/8
KIA431 Series
Revision No : 16
Input
FIGURE 1-TEST CIRCUIT FOR VKA = Vref
off
I
KA
V
Input
FIGURE 3-TEST CIRCUIT FOR I off
FIGURE 2-TEST CIRCUIT FOR VKA > Vref
IK
IK
VKA
VKA
Input
R1
R2
Iref
VKA = Vref ( 1+
) + Iref R1
R1
R2
Max.
Min.
T1
T2
AMBIENT TEMPERATURE
-
Vref (Min.)
Ta = T2 - T1
Vref
Vref
Vref
Vref = Vref (Max.)
Vref
Example :
ΔVref = 8.0mV and slope is positive,
Vref at 25℃=2.495V, ΔTa=70℃
0.008
×106
αVref =
= 45.8 ppm/
70
×(2.495)
Note 2: The dynamic impedance Zka is defined as:
ΔVKA
|Zka| =
ΔIk
When the device is programmed with two external
resistors, R1 and R2, (refer to Figure 2) the total
dynamic impedance of the circuit is defined as:
R1
|Zka'| = |Zka| (1+
)
R2
Note 1:
The deviation parameter
ΔVref is defined as the differences
between the maximum and minimum values obtained over the
full operating ambient temperature range that applies.
The average temperature coefficient of the Reference
input voltage,
ΔVref , is defined as:
ΔVref
(
)
× 106
ppm
Vref at 25℃
αVref (
) =
℃ΔTa
ΔVref × 106
=
ΔTa(Vref at 25℃)
αVref can be positive or negative depending on whether
Vref Min. or Vref Max. occurs at the lower ambient temperature.


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