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| 型號(hào)： | TL1431CDG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.5 V, PDSO8 |
| 封裝： | GREEN, PLASTIC, MS-012AA, SOIC-8 |
| 文件頁(yè)數(shù)： | 24/29頁(yè) |
| 文件大?。?/td> | 704K |
| 代理商： | TL1431CDG4 |
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Recommended Operating Conditions
Electrical Characteristics
V
KA
V
I(ref)
where:
TA is the rated operating temperature range of the device.
Max VI(ref)
Min VI(ref)
˙TA
VI(dev)
α
VI(ref)
ppm
°C
V
I(dev)
V
I(ref)
at 25
°C
× 10
6
T
A
(
( =
(
(3)
The output impedance is defined as:
I
KA
V
KA
|z | =
KA
When the device is operating with two external resistors (see Figure 2), the total dynamic impedance of the circuit is given by:
I
V
|z'| =
,
which is approximately equal to
R2
R1
|z |
KA
(1 +
(
.
PRECISION PROGRAMMABLE REFERENCE
SLVS062L – DECEMBER 1991 – REVISED OCTOBER 2007
MIN
MAX
UNIT
VKA
Cathode voltage
VI(ref)
36
V
IKA
Cathode current
1
100
mA
TL1431C
0
70
TA
Operating free-air temperature
TL1431Q
–40
125
°C
TL1431M
–55
125
at specified free-air temperature, IKA = 10 mA (unless otherwise noted)
TL1431C
TEST
PARAMETER
TEST CONDITIONS
TA
(1)
UNIT
CIRCUIT
MIN
TYP
MAX
25
°C
2490
2500
2510
VI(ref)
Reference input voltage
VKA = VI(ref)
mV
Full range
2480
2520
Deviation of reference input
VI(dev)
voltage over full temperature
VKA = VI(ref)
Full range
4
20
mV
range(2)
Ratio of change in reference
input voltage to the change in
ΔVKA = 3 V to 36 V
Full range
–1.1
–2
mV/V
cathode voltage
25
°C
1.5
2.5
II(ref)
Reference input current
R1 = 10 k
, R2 = ∞
μA
Full range
3
Deviation of reference input
II(dev)
current over full temperature
R1 = 10 k
, R2 = ∞
Full range
0.2
1.2
μA
range(2)
Minimum cathode current for
Imin
VKA = VI(ref)
25
°C
0.45
1
mA
regulation
25
°C
0.18
0.5
Ioff
Off-state cathode current
VKA = 36 V, VI(ref) = 0
μA
Full range
2
VKA = VI(ref), f ≤ 1 kHz,
|zKA|
Output impedance(3)
25
°C
0.2
0.4
IKA = 1 mA to 100 mA
(1)
Full range is 0
°C to 70°C for C-suffix devices.
(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) is positive or negative, depending on whether minimum VI(ref) or maximum VI(ref), respectively, occurs at the lower temperature.
4
Copyright 1991–2007, Texas Instruments Incorporated
Product Folder Link(s): TL1431
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