參數(shù)資料
型號: 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
文件頁數(shù): 25/29頁
文件大?。?/td> 704K
代理商: TL1431CDG4
www.ti.com
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
(
( =
(
(4)
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
at specified free-air temperature, IKA = 10 mA (unless otherwise noted)
TL1431Q
TL1431M
TEST
PARAMETER
TEST CONDITIONS
TA
(1)
UNIT
CIRCUIT
MIN
TYP
MAX
MIN
TYP
MAX
25
°C
2490
2500
2510
2475
2500
2540
VI(ref)
Reference input voltage
VKA = VI(ref)
mV
Full
2470
2530
2460
2550
range
Deviation of reference
Full
VI(dev)
input voltage over full
VKA = VI(ref)
17
55
17
55(3)
mV
range
temperature range(2)
Ratio of change in
reference input voltage
Full
ΔVKA = 3 V to 36 V
–1.1
–2
–1.1
–2
mV/V
to the change in
range
cathode voltage
25
°C
1.5
2.5
1.5
2.5
II(ref)
Reference input current
R1 = 10 k
, R2 = ∞
μA
Full
4
5
range
Deviation of reference
Full
II(dev)
input current over full
R1 = 10 k
, R2 = ∞
0.5
2
0.5
3(3)
μA
range
temperature range(2)
Minimum cathode
Imin
VKA = VI(ref)
25
°C
0.45
1
0.45
1
mA
current for regulation
25
°C
0.18
0.5
0.18
0.5
Off-state cathode
Ioff
VKA = 36 V, VI(ref) = 0
μA
Full
current
2
range
VKA = VI(ref), f ≤ 1 kHz,
|zKA|
Output impedance(4)
25
°C
0.2
0.4
0.2
0.4
IKA = 1 mA to 100 mA
(1)
Full range is –40
°C to 125°C for Q-suffix devices and –55°C to 125°C for M-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.
(3)
On products compliant to MIL-PRF-38535, this parameter is not production tested.
Copyright 1991–2007, Texas Instruments Incorporated
5
Product Folder Link(s): TL1431
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