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ZRA245N801TA

P1-P3P4-P5
DEVICE DESCRIPTION
The ZRA245 uses a bandgap circuit design
to achieve a precision voltage reference of
2.45 volts. The device is available in small
outline surface mount packages, ideal for
applications where space saving is
important.
The ZRA245 design provides a stable voltage
without an external capacitor and is stable
with capacitive loads. The ZRA245 is
recommended for operation between 2mA
and 120mA.
FEATURES
•
Small outline SOT23, SO8 and TO92
style package
•
No stabilising capacitor required
•
Typical T
C
15ppm/°C
•
Typical slope resistance 0.26Ω
•
± 3% , 2% and 1% tolerance
•
Industrial temperature range
•
Operating current 2mA to 120mA
APPLICATIONS
•
Battery powered and portable
equipment.
•
Metering and measurement systems.
•
Instrumentation.
•
Test equipment.
•
Data acquisition systems.
•
Precision power supplies.
PRECISION 2.45 VOLT
VOLTAGE REFERENCE
ISSUE 3 — MARCH 1998
ZRA245
VR
Gnd
1.25V
REF
SCHEMATIC DIAGRAM
4-227
ABSOLUTE MAXIMUM RATING
Reverse Current 200mA
Forward Current 25mA
Operating Temperature -40 to 85°C
Storage Temperature -55 to 125°C
Power Dissipation (T
amb
=25°C)
SOT23 330mW
E-Line, 3 pin (TO92) 500mW
E-Line, 2 pin (TO92) 500mW
SO8 625mW
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated) T
amb
=25°C
SYMBOL PARAMETER
CONDITIONS LIMITS TOL.
%
UNITS
MIN TYP MAX
V
R
Reverse Breakdown Voltage I
R
=5mA 2.43
2.40
2.38
2.45
2.45
2.45
2.47
2.50
2.52
1
2
3
V
I
MIN
Minimum Operating Current 2 mA
I
R
Recommended Operating
Current
2 120 mA
T
C
† Average Reverse Breakdown
Voltage Temp. Co. I
R(min)
to
I
R(max)
15 50 ppm/°C
R
S
§ Slope Resistance 0.26 0.5
Ω
Z
R
Reverse Dynamic Impedance I
R
=5mA
f = 100Hz
I
AC
=0.1 I
R
0.28 1
Ω
E
N
Wideband Noise Voltage I
R
= 5mA
f = 10Hz to
10kHz
65
µV(rms)
ZRA245
†
T
C
=
(
V
R
(
max
)
−
V
R
(
min
)
)
x
1000000
V
R
x
(
T
(
max
)
−
T
(
min
)
)
Note: V
R(max)
- V
R(min)
is the maximum
deviation in reference voltage measured
over the full operating temperature
range.
§
R
S
=
V
R
Change
(
I
R
(
min
)
to
I
R
(
max
))
I
R
(
max
) −
I
R
(
min
)
4-228
V
IN
-
(V)
V
R
-
(V)
Transient Response
2.44
2.43
2.46
2.45
TYPICAL CHARACTERISTICS
F
or
wa
rd
V
o
l
ta
g
e
(V
)
Temperature (°C)
Reference Current (mA)
Frequency (KHz)
Temperature Drift
Slope Resistance v Current
Re
fe
ren
c
e
v
o
l
ta
ge
(
V)
S
l
op
e
re
si
s
ta
n
ce
(
Ω
)
Time (µs)
0510
-40
10 1001
Slope Resistance v Frequency
-20 0 20 40 60 80
Forward Characteristics
Forward Current (mA)
0.4
0.6
0.8
1.0
1.2
1.4
1 10 100 1000
0.1
1
10
100
10 10010.10.01
15 20
0
10
0
1.0
2.0
3.0
S
l
o
pe
r
esi
sta
n
ce
(
Ω
)
I
R
=2mA
I
R
=5mA
I
R
=20mA
T
A
=-40°C
1.6
0
0.4
0.2
0.6
T
A
=25°C
T
A
=85°C
V
IN
V
R
0.36K
20mA
3K6
2mA
20mA
2mA
R
evers
e
Cu
rre
nt
(
m
A
)
0
Reverse Characteristics
Reverse Voltage (V)
0
2.0
4.0
1.0 2.0 3.0
T
A
=25°C
ZRA245
4-229
P1-P3P4-P5

ZRA245N801TA

Mfr. #:
Buy ZRA245N801TA
Manufacturer:
Description:
IC VREF SHUNT 2.45V 8SOP
Lifecycle:
New from this manufacturer.
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