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參數(shù)資料
| 型號： | ADR510ART-R2 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 1.0 V Precision Low Noise Shunt Voltage Reference |
| 中文描述： | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1 V, PDSO3 |
| 封裝： | TO-236AB, SOT-23, 3 PIN |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 181K |
| 代理商： | ADR510ART-R2 |
REV. 0
–4–
ADR510
PARAMETER DEFINITIONS
Temperature Coefficient
This is the change of output voltage with respect to the operating
temperature changes, normalized by the output voltage at 25
°
C.
This parameter is expressed in ppm/
°
C and can be determined
with the following equation
ppm
C
V
C
O
°
°
(
25
where:
V
O
(
25
°
C)
=
V
O
at 25
°
C
V
O
(T
1
)
=
V
O
at Temperature 1
V
O
(T
2
)
=
V
O
at Temperature 2
Thermal Hysteresis
Thermal hysteresis is defined as the change of output voltage
after the device is cycled through the temperature from 25
°
C to
0
°
C to 70
°
C and back to 25
°
C. This is a typical value from a
sample of parts put through such a cycle.
V
V
C
V
O
HYS
O
O TC
_
_
=
°
(
[
(
25
where:
V
O
(
25
°
C)
=
V
O
at 25
°
C
V
O_TC
=
V
O
at 25
°
C after temperature cycle at 25
°
C to –40
°
C
to 85
°
C and back to 25
°
C
TCV
V T
V T
T
)
×
T
O
=
2
(
)
×
2
1
1
6
10
(1)
V
ppm
V
C
°
V
C
°
V
O
HYS
O
O TC
_
O
_
)
(
25
]
=
)
×
25
10
6
(2)
APPLICATIONS SECTION
The ADR510 is a 1.0 V precision shunt voltage reference. It
is designed to operate without an external output capacitor
between the positive and negative terminals for stability. An exter-
nal capacitor can be used for additional filtering of the supply.
As with all shunt voltage references, an external bias resistor
(R
BIAS
) is required between the supply voltage and the ADR510
(see Figure 1). R
BIAS
sets the current that is required to pass
through the load (I
L
) and the ADR510 (I
Q
). The load and the
supply voltage can vary, thus R
BIAS
is chosen based on
R
BIAS
must be small enough to supply the minimum I
Q
cur-
rent to the ADR510 even when the supply voltage is at its
minimum and the load current is at its maximum value.
R
BIAS
also needs to be large enough so that I
Q
does not
exceed 10 mA when the supply voltage is at its maximum
and the load current is at its minimum.
Given these conditions, R
BIAS
is determined by the supply
voltage (V
S
), the load and operating current (I
L
and I
Q
) of the
ADR510, and the ADR510’s output voltage.
R
(V
V
) (I
/
I )
BIAS
S
OUT
L
=
+
–
(3)
TIME (2 s/DIV)
D
I
IN
= 100 A
V
OUT
= 50mV/DIV
TPC 7. Output Response to 100
μ
A Input Current
Change with 1
μ
F Capacitor
TIME (400ms/DIV)
2 V/DIV
TPC 8. 1 Hz to 10 Hz Noise
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