A Product Line of
Diodes Incorporated
ZXRE125
SOT23 MICROPOWER 1.22V VOLTAGE REFERENCE
Description
The ZXRE125 is a bandgap circuit designed to achieve a
precision micropower voltage reference of 1.22 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% for precision
applications. Excellent performance is maintained over the
8µA to 20mA 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
replacement of the ZRA124 and ZRA125 series of voltage
references.
Pin Assignments
(Top View)
Pin 1 floating or connected to pin 2
Features
•
•
•
•
•
•
•
High performance 1.220V reference
Small outline SOT23
4μA knee current
20ppm/°C typical temperature coefficient
Unconditionally stable
0.5%, 1%, 2%, and 3% tolerance
Green molding compound (No Br, Sb)
OBSOLETE
(Bottom View)
Pin 3 floating or connected to pin 1
Applications
•
•
•
•
•
Battery powered equipment
Precision power supplies
Portable instrumentation
Portable communication devices
Data acquisition systems
Schematic Diagram
Application Circuit
ZXRE125
Document number: DS32170 Rev. 8 - 2
1 of 5
www.diodes.com
June 2010
© Diodes Incorporated
A Product Line of
Diodes Incorporated
ZXRE125
Absolute Maximum Ratings
(Voltages to GND Unless Otherwise Stated)
Parameter
Reverse Current
Forward Current
Operating Temperature
Storage Temperature
Power Dissipation (T
AMB
= 25°C)
Symbol
V
Z
T
OMP
T
STG
P
D
Rating
30
10
-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
Reverse Breakdown Change
with Current Voltage
Condition
I
R
= 100µA
Min.
1.214
1.208
1.196
1.183
0.008
Typ.
1.220
1.220
1.220
1.220
4
20
Max.
1.226
1.232
1.244
1.257
8
20
75
1
10
Tol. (%)
C/0.5
(1)
D/1
E/2
F/3
Unit
V
µA
mA
ppm/°C
mV
I
R(min)
to I
R(max)
I
R
= 30μA to 1mA
I
R
= 1mA to 12mA
I
R
= 1mA
f = 100Hz
I
AC
= 0.1I
R
I
R
= 8µA to 100µA
f = 10Hz to 10kHz
ΔV
R
ΔI
R
Z
R
E
N
Notes:
1.
Reverse dynamic impedance
Wideband noise voltage
0.2
60
0.6
Ω
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.
ZXRE125
Document number: DS32170 Rev. 8 - 2
2 of 5
www.diodes.com
June 2010
© Diodes Incorporated
A Product Line of
Diodes Incorporated
ZXRE125
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Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the
express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labeling can be reasonably expected to result in significant injury to the user.
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the failure of the life support device or to affect its safety or effectiveness.
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its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or
systems.
Copyright © 2010, Diodes Incorporated
www.diodes.com
ZXRE125
Document number: DS32170 Rev. 8 - 2
5 of 5
www.diodes.com
June 2010
© Diodes Incorporated
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