Diodes ZXRE4041 User Manual
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Diodes Incorporated
ZXRE4041
SOT23 MICROPOWER 1.225V VOLTAGE REFERENCE
Description
The ZXRE4041 is a bandgap circuit des igned to achieve a
precision micropower voltage reference of 1.225 volts. The
device is available in the small outline SOT23 surface
mount package which is ideal for applications where space
saving is important.
SOT23 tolerance is available to 0.5% C grade for precision
applications. Excellent performance is maintained over the
30A to 12mA operating current range with a typical
temperature coefficient of only 20ppm/°C. The device has
been designed to be highly tolerant of capacitive loads so
maintaining excellent stability.
This device offers a SOT23 pin for pin compatible
alternative to LM4041 voltage references.
Features
• High performance alternative to LM4041
• Small outline SOT23
• 30μA knee current
• 20ppm/°C typical temperature coefficient
• Unconditionally stable
• 0.5%, 1%, and 2% tolerance
• Green molding compound (No Br, Sb)
Applications
• Battery powered equipment
• Precision power supplies
• Portable instrumentation
• Portable communication devices
• Notebook and palm top computers
• Data acquisition systems
• A/D and D/A converters
• Test equipment
Pin Assignments
(Top view)
Pin 1 floating or connected to pin 2
Schematic Diagram
Application Circuit
ZXRE4041
Document number: DS32169 Rev. 6 - 2
1 of 5
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May 2010
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ZXRE4041
Absolute Maximum Ratings (Voltages to GND Unless Otherwise Stated)
Parameter Symbol Rating Unit
Reverse Current VZ 30 mA
Forward Current 10 mA
Operating Temperature T
Storage Temperature T
Power Dissipation (T
AMB
= 25°C)
-40 to 125 °C
OMP
-55 to 125 °C
STG
PD 330 mW
Electrical Characteristics (Test conditions: T
= 25°C, unless otherwise specified.)
amb
Symbol Parameter Condition Min. Typ. Max. Tol. (%) Unit
VR
I
MIN
IR
T
Reverse breakdown voltage
Minimum operating current 30
IR = 100µA
1.219
1.213
Recommended operating current 0.03 12
(*)
C
Average reverse breakdown
voltage temperature coefficient
I
R(min)
to I
20 100 ppm/°C
R(max)
1.225
1.225
1.231
1.237
C/0.5
D/1
V
µA
mA
(†)
R
S
ZR
EN
Notes:
Note: V
voltage measured over the full operating temperature range.
Reverse Breakdown Change
with Current Voltage
Reverse dynamic impedance
Wideband noise voltage
– V
R(MAX)
ΔV
ΔI
(V
R(MAX
R
R
R(MIN
x (T
V
R
MAX
- V
is the maximum deviation in reference
R(MIN)
(*)
(†)
TC =
RS =
) x 1000000
– T
)
MIN
ZXRE4041
Document number: DS32169 Rev. 6 - 2
= 30μA to 1μA
I
R
= 1mA to 12mA
I
R
= 1mA
I
R
f = 100Hz
I
= 0.1IR
AC
= 8µA to 100µA
I
R
f = 10Hz to 10kHz
2 of 5
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0.2 0.6
60
1
10
mV
Ω
µV(rms)
May 2010
© Diodes Incorporated
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