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參數(shù)資料
| 型號： | TL1431QDREP |
| 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： | ROHS COMPLIANT, PLASTIC, MS-012AA, SOIC-8 |
| 文件頁數(shù)： | 15/20頁 |
| 文件大小： | 444K |
| 代理商： | TL1431QDREP |
www.ti.com
rated temperature range. The average full-range temperature coefficient of the reference input voltage
a
V
I(ref) is defined as:
where:
TA is the rated operating temperature range of the device.
Max VI(ref)
Min VI(ref)
TA
VI(dev)
a
V
I(ref)
ppm
°C +
V
I(dev)
V
I(ref)
at 25
°C
106
D
T
A
a
V
I(ref) is positive or negative, depending on whether minimum VI(ref) or maximum VI(ref), respectively, occurs at the lower temperature.
(3)
The output impedance is defined as:
z
KA +
DVKA
DIKA
|z | + D
V
DI , which is approximately equal to
z
KA
+ 1 )
R1
R2 .
Electrical Characteristics
DVI(ref)
DVKA
PRECISION PROGRAMMABLE REFERENCE
SLVS529C – APRIL 2004 – REVISED DECEMBER 2006
at specified free-air temperature, I
KA = 10 mA (unless otherwise noted)
TEST
PARAMETER
TEST CONDITIONS
TA(1)
MIN
TYP
MAX
UNIT
CIRCUIT
25
°C
2490
2500
2510
VI(ref)
Reference input voltage
VKA = VI(ref)
mV
Full range
2470
2530
Deviation of reference input
VI(dev)
voltage over full temperature
VKA = VI(ref)
Full range
17
mV
range(2)
Ratio of change in reference
input voltage to the change in
V
KA = 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 =
∞
A
Full range
4
Deviation of reference input
II(dev)
current over full temperature
R1 = 10 k
,
R2 =
∞
Full range
0.5
A
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
A
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 –40
°C to 125°C for Q-suffix devices; –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
When the device is operating with two external resistors (see Figure 2), the total dynamic impedance of the circuit is given by:
4
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