ADR3430ARJZ-R7 Analog Devices Inc, ADR3430ARJZ-R7 Datasheet - Page 18

• Manufacturer Part Number: ADR3430ARJZ-R7
• Description: IC VOLTAGE REF 3.3V SOT23-6
• Manufacturer: Analog Devices Inc

Specifications of ADR3430ARJZ-R7

• Topology: Series
• Input Voltage: 3.2V To 5.5V
• Reference Voltage: 3V
• Reference Voltage Tolerance: 3mV
• Voltage Reference Case Style: SOT-23
• No. Of Pins: 6
• Temperature Coefficient: 2.5ppm/°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADR3412/ADR3420/ADR3425/ADR3430/ADR3433/ADR3440/ADR3450
TERMINOLOGY
Dropout Voltage (V
Dropout voltage, sometimes referred to as supply voltage
headroom or supply-output voltage differential, is defined as
the minimum voltage differential between the input and output
such that the output voltage is maintained to within 0.1%
accuracy.
Because the dropout voltage depends upon the current passing
through the device, it is always specified for a given load current.
In series-mode devices, dropout voltage typically increases
proportionally to load current (see Figure 8 and Figure 14).
Temperature Coefficient (TCV
The temperature coefficient relates the change in output voltage
to the change in ambient temperature of the device, as normalized
by the output voltage at 25°C. This parameter is expressed in
ppm/°C and can be determined by the following equation:
where:
V
T
T
T
This three-point method ensures that TCV
portrays the maximum difference between any of the three
temperatures at which the output voltage of the part is
measured.
The TCV
ADR3440/ADR3450 is guaranteed via statistical means. This is
accomplished by recording output voltage data for a large
number of units over temperature, computing TCV
individual device via Equation 1, then defining the maximum
TCV
six standard deviations (6σ).
Thermally Induced Output Voltage Hysteresis (ΔV
Thermally induced output voltage hysteresis represents the
change in output voltage after the device is exposed to a
specified temperature cycle. This is expressed as either a shift in
voltage or a difference in ppm from the nominal output.
1
2
3
OUT
= −40°C.
= +25°C.
= +125°C.
(T) is the output voltage at Temperature T.
V
OUT
TCV
DO
limits as the mean TCV
= (V
OUT
OUT
for the ADR3412/ADR3425/ADR3430/ADR3433/
IN
=
10
− V
max{
6
[
OUT
ppm
DO
V
)
)
min
OUT
/
| I
°
(
C
T
L
]
1
V
= constant
,
T
OUT
OUT
OUT
2
,
T
(
for all devices extended by
T
)
3
)}
2
)
−
×
min{
(
T
3
OUT
−
V
T
accurately
OUT
1
)
(
T
OUT
1
OUT_HYS
,
T
for each
2
,
T
3
)
Rev. B | Page 18 of 24
)}
(1)
×
where:
V
V
Long-Term Stability (ΔV
Long-term stability refers to the shift in output voltage at 50°C
after 1000 hours of operation in a 50°C environment. Ambient
temperature is kept at 50°C to ensure that the temperature
chamber does not switch randomly between heating and cooling,
which can cause instability over the 1000 hour measurement.
This is also expressed as either a shift in voltage or a difference
in ppm from the nominal output.
where:
V
V
at 50°C.
Line Regulation
Line regulation refers to the change in output voltage in response
to a given change in input voltage and is expressed in percent
per volt, ppm per volt, or μV per volt change in input voltage.
This parameter accounts for the effects of self-heating.
Load Regulation
Load regulation refers to the change in output voltage in
response to a given change in load current and is expressed in
μV per mA, ppm per mA, or ohms of dc output resistance. This
parameter accounts for the effects of self-heating.
Solder Heat Resistance (SHR) Drift
SHR drift refers to the permanent shift in output voltage
induced by exposure to reflow soldering, expressed in units of
ppm. This is caused by changes in the stress exhibited upon the
die by the package materials when exposed to high tempera-
tures. This effect is more pronounced in lead-free soldering
processes due to higher reflow temperatures.
OUT
OUT_TC
OUT
OUT
(25°C) is the output voltage at 25°C.
(t
(t
Δ
Δ
Δ
Δ
0
1
V
V
V
V
) is the V
) is the V
is the output voltage after temperature cycling.
OUT
OUT
OUT
OUT
_
_
_
_
HYS
HYS
LTD
LTD
OUT
OUT
=
=
=
=
V
V
V
V
at 50°C at Time 0.
at 50°C after 1000 hours of operation
OUT
OUT
OUT
OUT
(
(
V
(
(
25
V
25
t
t
OUT
OUT_LTD
1
1
OUT
°
)
°
)
C
C
−
−
(
)
)
V
(
V
25
t
−
−
OUT
OUT
0
V
)
V
°
)
C
OUT
OUT
)
(
(
t
t
0
0
_
_
)
)
TC
TC
×
[V]
10
×
[V]
10
6
6
[ppm]
[ppm]