ADR510 Analog Devices, ADR510 Datasheet - Page 4

• Manufacturer Part Number: ADR510
• Description: 1.0 V Precision Low Noise Shunt Voltage Reference
• Manufacturer: Analog Devices

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
where:
V
V
V
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.
where:
V
V
to 85°C and back to 25°C
O
O
O
O
O_TC
(25°C) = V
(T
(T
(25°C) = V
TPC 7. Output Response to 100 µ A Input Current
Change with 1 µ F Capacitor
V
V
TCV
1
2
) = V
) = V
O HYS
O HYS
= V
_
_
O
O



O
O
at 25°C after temperature cycle at 25°C to –40°C
ppm
[
°
at Temperature 2
at Temperature 1
=
ppm
C
O
O
V
at 25°C
at 25°C
O

 =

(
]
25
=
V
V
°
O
C
O
V T
(
)
25
O
(
25
TIME (2 s/DIV)
−
V
( )
V
°
O
°
2
C
O TC
C
(
25
)
_
−
)
×
−
V T
°
(
V
C
T
O
O TC
2
)
( )
−
_
1
T
DI
V
1
OUT
IN
)
×
= 100 A
×
10
= 50mV/DIV
10
6
6
(1)
(2)
–4–
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
(see Figure 1). R
through the load (I
supply voltage can vary, thus R
•
•
Given these conditions, R
voltage (V
ADR510, and the ADR510’s output voltage.
BIAS
R
rent to the ADR510 even when the supply voltage is at its
minimum and the load current is at its maximum value.
R
exceed 10 mA when the supply voltage is at its maximum
and the load current is at its minimum.
R
BIAS
BIAS
) is required between the supply voltage and the ADR510
BIAS
must be small enough to supply the minimum I
also needs to be large enough so that I
S
), the load and operating current (I
=
(V
S
BIAS
TPC 8. 1 Hz to 10 Hz Noise
–
L
V
) and the ADR510 (I
OUT
sets the current that is required to pass
) (I
TIME (400ms/DIV)
BIAS
/
L
is determined by the supply
BIAS
+
I )
Q
is chosen based on
Q
). The load and the
2 V/DIV
L
Q
and I
does not
Q
) of the
REV. 0
Q
cur-
(3)