A Product Line of
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 surface 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 60μA
and 15mA and so is ideally suited to low 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.
Pin Assignments
SOT23 Package Suffix - F
(Top View)
Pin 1 floating or connected to pin 2
E-Line, 3 pin, Rev Package Suffix – R
Features
•
•
•
•
•
•
•
•
•
Small outline SOT23 package
No stabilizing capacitor required
Typical T
C
30ppm/°C
Typical slope resistance 0.4Ω
2%, 1% and 0.5% tolerance
Industrial temperature range
Operating current 60μA to 15mA
Transient response, stable in less than 10μs
Green molding compound (No Br, Sb)
OBSOLETE
(Bottom View)
Pin 3 floating or connected to pin 1
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
A Product Line of
Diodes Incorporated
ZR4040-2.5
Absolute Maximum Ratings
(Voltages to GND Unless Otherwise Stated)
Parameter
Reverse Current
Forward Current
Operating Temperature
Storage Temperature
Power Dissipation (T
AMB
= 25°C)
SOT23
Rating
25
25
-40 to 85
-55 to 125
330
Unit
mA
mA
°C
°C
mW
Electrical Characteristics
Symbol
V
R
I
MIN
I
R
T
C
(*)
(†)
(Test conditions: Tamb = 25°C, unless otherwise specified.)
Parameter
Reverse breakdown voltage
Minimum operating current
Recommended operating current
Average reverse breakdown voltage
temperature coefficient
Slope resistance
Reverse dynamic impedance
Condition
I
R
= 150µA
Min.
2.4875
2.475
2.45
0.06
Typ.
2.5
2.5
2.5
25
30
0.4
0.3
Max.
2.5125
2.525
2.55
60
15
100
2
0.8
Tol. (%)
0.5
1
2
Unit
V
µA
mA
ppm/°C
Ω
Ω
R
S
Z
R
I
R(MIN)
to
I
R(MAX)
I
R
= 1mA
f = 100Hz
I
AC
= 0.1I
R
I
R
= 1mA
f = 10Hz to
10kHz
E
N
Notes:
(*)
Wideband noise voltage
45
µV(rms)
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 (
IR(MIN)
to I
R(MAX
)
)
I
R(MAX)
– I
R(MIN)
)
.
ZR4040-2.5
Document number: DS32180 Rev. 5 - 2
2 of 5
www.diodes.com
June 2010
© Diodes Incorporated
A Product Line of
Diodes Incorporated
ZR4040-2.5
Typical Characteristics
ZR4040-2.5
Document number: DS32180 Rev. 5 - 2
3 of 5
www.diodes.com
June 2010
© Diodes Incorporated
A Product Line of
Diodes Incorporated
ZR4040-2.5
Ordering Information
*
Order
Reference
ZR40401F25TA
ZR40402F25TA
ZR404005F25TA
Notes:
Tol
(%)
1
2
0.5
Package
SOT23
SOT23
SOT23
Device Mark
25M
25L
25V
Status (*)
Released
Released
Released
Reel Size
(inches)
7
7
7
Quantity
per reel
3000
3000
3000
Tape Width
(mm)
8
8
8
*All ZR4040R25 variants (E-Line) are obsolete and no longer available for sale. The closest alternative is the SOT23.
Package Outline Dimensions
SOT23
E
e
b
3 leads
e1
L1
E1
D
A
A1
L
c
Dim.
Millimeters
Min.
Max.
1.12
0.10
0.50
0.20
3.04
Inches
Min.
-
0.0004
0.012
0.003
0.110
Max.
0.044
0.004
0.020
0.008
0.120
Dim.
Millimeters
Min.
Max.
Inches
Min.
Max.
A
A1
b
c
D
e
-
0.01
0.30
0.085
2.80
e1
E
E1
L
L1
-
1.90 NOM
2.10
1.20
0.25
0.45
-
2.64
1.40
0.60
0.62
-
0.075 NOM
0.083
0.047
0.0098
0.018
-
0.104
0.055
0.0236
0.024
-
0.95 NOM
0.037 NOM
Note:
Controlling dimensions are in millimeters. Approximate dimensions are provided in inches
ZR4040-2.5
Document number: DS32180 Rev. 5 - 2
4 of 5
www.diodes.com
June 2010
© Diodes Incorporated
A Product Line of
Diodes Incorporated
ZR4040-2.5
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express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
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Copyright © 2010, Diodes Incorporated
www.diodes.com
ZR4040-2.5
Document number: DS32180 Rev. 5 - 2
5 of 5
www.diodes.com
June 2010
© Diodes Incorporated
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