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PRECISION 2.45 VOLT VOLTAGE REFERENCE



Zetex Semiconductors 로고
Zetex Semiconductors
ZRA245R02 데이터시트, 핀배열, 회로
PRECISION 2.45 VOLT
VOLTAGE REFERENCE
ISSUE 3 — MARCH 1998
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.
SCHEMATIC DIAGRAM
VR
ZRA245
FEATURES
Small outline SOT23, SO8 and TO92
style package
No stabilising capacitor required
Typical TC 15ppm/°C
Typical slope resistance 0.26
± 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.
1.25VREF
Gnd
4-227


ZRA245R02 데이터시트, 핀배열, 회로
ZRA245
ABSOLUTE MAXIMUM RATING
Reverse Current
200mA
Forward Current
25mA
Operating Temperature -40 to 85°C
Storage Temperature
-55 to 125°C
Power Dissipation (Tamb=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) Tamb=25°C
SYMBOL PARAMETER
CONDITIONS
LIMITS
TOL. UNITS
%
MIN TYP MAX
VR
Reverse Breakdown Voltage IR=5mA
2.43 2.45 2.47 1
V
2.40 2.45 2.50 2
2.38 2.45 2.52 3
IMIN Minimum Operating Current
IR Recommended Operating
Current
2 mA
2 120 mA
TC
RS §
ZR
EN
Average Reverse Breakdown
Voltage Temp. Co.
Slope Resistance
IR(min) to
IR(max)
Reverse Dynamic Impedance
IR = 5mA
f = 100Hz
IAC= 0.1 IR
Wideband Noise Voltage
IR= 5mA
f = 10Hz to
10kHz
15 50
0.26 0.5
0.28 1
65
ppm/°C
µV(rms)
TC
=
(VR(max)VR(min)) x 1000000
VR x (T(max)T(min))
Note: VR(max) - VR(min) is the maximum
deviation in reference voltage measured
over the full operating temperature
range.
§
RS
=
VR
Change(IR (min) to IR
IR (max) − IR (min)
(max))
4-228




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