Diodes ZR4040-2.5 User Manual
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Diodes Incorporated
ZR4040-2.5
PRECISION 2.5 VOLT MICROPOWER VOLTAGE REFERENCE
Description
The ZR4040-2.5 uses a bandgap circuit design to achieve a
precision micropower voltage reference of 2.5 volts. The
device is available in a small outline s urface mount package,
ideal for applications where space saving is important, as
well as packages for through hole requirements.
The ZR4040-2.5 design provides a stable voltage without an
external capacitor and is stable with capacitive loads. The
ZR4040-2.5 is recommended for operation between 60A
and 15mA and so is ideally suited to lo w power and battery
powered applications.
Excellent performance is maintained to an absolute
maximum of 25mA, however the rugged design and 20 volt
processing allows the reference to withstand transient
effects and currents up to 200mA. Superior switching
capability allows the device to reach stable operating
conditions in only a few microseconds.
Features
• Small outline SOT23 package
• No stabilizing capacitor required
• Typical T
• Typical slope resistance 0.4
• 2%, 1% and 0.5% tolerance
• Industrial temperature range
• Operating current 60A to 15mA
• Transient response, stable in less than 10s
• Green molding compound (No Br, Sb)
30ppm/°C
C
Pin Assignments
SOT23 Package Suffix - F
Pin 1 floating or connected to pin 2
E-Line, 3 pin, Rev Package Suffix – R
Pin 3 floating or connected to pin 1
(Top View)
OBSOLETE
(Bottom View)
Applications
• Battery powered and portable equipment
• Metering and measurement systems
• Instrumentation
• Test equipment
• Data acquisition systems
• Precision power supplies
Typical Application Circuit
ZR4040-2.5
Document number: DS32180 Rev. 5 - 2
1 of 5
www.diodes.com
June 2010
© Diodes Incorporated
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Diodes Incorporated
Absolute Maximum Ratings (Voltages to GND Unless Otherwise Stated)
Parameter Rating Unit
Reverse Current 25 mA
Forward Current 25 mA
Operating Temperature -40 to 85 °C
Storage Temperature -55 to 125 °C
Power Dissipation (T
SOT23
AMB
= 25°C)
330 mW
Product Line o
ZR4040-2.5
Electrical Characteristics (Test conditions: T
= 25°C, unless otherwise specified.)
amb
Symbol Parameter Condition Min. Typ. Max. Tol. (%) Unit
VR
I
MIN
IR
T
R
ZR
EN
2.4875
Reverse breakdown voltage
IR = 150µA
2.475
2.45
Minimum operating current 25 60
Recommended operating current 0.06 15
(*)
C
(†)
S
Average reverse breakdown voltage
temperature coefficient
Slope resistance 0.4 2
I
R(MIN)
I
R(MAX)
to
30 100
IR = 1mA
Reverse dynamic impedance
Wideband noise voltage
f = 100Hz
I
= 0.1IR
AC
I
= 1mA
R
f = 10Hz to
0.3 0.8
45
2.5
2.5
2.5
2.5125
2.525
2.55
0.5
1
2
V
µA
mA
ppm/°C
µV(rms)
10kHz
Notes:
– V
) x 1000000
R(MIN
– T
R(MIN
to I
MIN
R(MAX
)
)
MAX
is the maximum deviation in reference
IR(MIN
– I
)
2 of 5
www.diodes.com
June 2010
© Diodes Incorporated
R(MAX)
(V
R(MAX
- V
Change (
V
R
V
R
R(MIN)
I
R(MAX
x (T
(*)
TC =
Note: V
voltage measured over the full operating temperature range.
(†)
RS =
.
ZR4040-2.5
Document number: DS32180 Rev. 5 - 2
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