|
TL1431-SP Datasheet, PDF (3/13 Pages) Texas Instruments – CLASS V, PRECISION PROGRAMMABLE REFERENCE | |||
|
◁ |
TL1431-SP
www.ti.com
Electrical Characteristics
at specified free-air temperature, IKA = 10 mA (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TA (1)
VI(ref)
VI(dev)
âVI(ref)
âVKA
II(ref)
II(dev)
Imin
Ioff
|zKA|
Reference input voltage
VKA = VI(ref)
Deviation of reference input
voltage over full temperature
range (2)
Ratio of change in reference
input voltage to the change in
cathode voltage
VKA = VI(ref)
ÎVKA = 3 V to 36 V
Reference input current
R1 = 10 kâ¦, R2 = â
Deviation of reference input
current over full temperature
range (2)
Minimum cathode current for
regulation
R1 = 10 kâ¦, R2 = â
VKA = VI(ref)
Off-state cathode current
Output impedance(4)
VKA = 36 V, VI(ref) = 0
VKA = VI(ref), f ⤠1 kHz,
IKA = 1 mA to 100 mA
25°C
Full
range
Full
range
Full
range
25°C
Full
range
Full
range
25°C
25°C
Full
range
25°C
TEST
CIRCUIT
Figure 1
Figure 1
Figure 2
Figure 2
Figure 2
Figure 1
Figure 3
Figure 1
SLVSB44 â JULY 2012
MIN
2475
2460
TYP
2500
MAX UNIT
2540
mV
2550
17
55(3) mV
â1.1
1.5
0.5
â2 mV/V
2.5
μA
5
3(3) μA
0.45
1 mA
0.18
0.5
μA
2
0.2
0.4 â¦
(1) Full range is â55°C to 125°C.
(2) The deviation parameters VI(dev) and II(dev) are defined as the differences between the maximum and minimum values obtained over the
rated temperature range. The average full-range temperature coefficient of the reference input voltage αVI(ref) is defined as:
αVI(ref)
( ppm
°C
=
( VI(dev)
° VI(ref) at 25 C
TA
à 106
Max VI(ref)
where:
âTA is the rated operating temperature range of the device.
VI(dev)
Min VI(ref)
ËTA
αVI(ref) is positive or negative, depending on whether minimum VI(ref) or maximum VI(ref), respectively, occurs at the lower temperature.
(3) On products compliant to MIL-PRF-38535, this parameter is not production tested.
(4)
The
output
impedance
is
defined
as:
|zKA|
=
âVKA
âIKA
When the device is operating with two external resistors (see Figure 2), the total dynamic impedance of the circuit is given by:
( |z'|
=
âV
âI
,
which
is
approximately
equal
to
|zKA|
1
+
R1
R2
.
Copyright © 2012, Texas Instruments Incorporated
Product Folder Link(s): TL1431-SP
Submit Documentation Feedback
3
|
▷ |