A Product Line of
Diodes Incorporated
ZXRE1004
SOT23 MICROPOWER (4µA) 1.22V VOLTAGE REFERENCE
Description
The ZXRE1004 is a 1.22 volt bandgap reference circuit
designed for ultra low current operation, typically 4μA. The
device is available in a SOT23 surface mount package
offering the ultimate in space and power saving. These
features make the ZXRE1004 particularly suitable for
portable and battery powered applications.
SOT23 tolerance selection 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.
As well as the SOT23, the ZXRE1004 can offer a pin for pin
compatible alternative to the REF1004, LT1004 and
LM185/385 series of voltage references with an E-Line
(TO92 style) equivalent.
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
•
•
•
•
•
•
•
•
High performance alternative to REF1004, LT1004 and
LM185/385 references
4μA typical knee current
Small outline SOT23 package
20ppm/°C typical temperature coefficient
Unconditionally stable
1% tolerance
Contact Diodes marketing for availability of tighter
tolerance devices
“Green molding compound
OBSOLETE
(Bottom View)
Pin 3 floating or connected to pin 1
Applications
•
•
•
•
•
•
•
•
Battery powered equipment
Precision power supplies
Portable instrumentation
Portable communications devices
Notebook and palmtop computers
Data acquisition systems
A/D and D/A converters
Test equipment
Schematic Diagram
Applications Circuit
ZXRE1004
Document number: DS32172 Rev. 4 - 2
1 of 5
www.diodes.com
June 2010
© Diodes Incorporated
A Product Line of
Diodes Incorporated
ZXRE1004
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
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 knee current
Recommended operating current
range
Average reverse breakdown voltage
temperature coefficient
Reverse breakdown voltage change
with current
Reverse dynamic impedance
Wideband noise voltage
(V
R(MAX)
– V
R(MIN)
) x 1000000
V
R
x (T
(MAX)
– T
(MIN)
)
Condition
I
R
= 100µA
Min.
1.208
1.183
0.008
Typ.
1.22
1.22
4
Max.
1.232
1.257
8
20
Tol.
(%)
1
3
Unit
V
µA
mA
ppm/°C
mV
Ω
µV(rms)
I
R(MIN)
to I
R(MAX)
I
R
=8µA to 1mA
I
R
=1mA to 20mA
I
R
= 1mA
f = 100Hz
I
AC
= 0.1I
R
I
R
=8µA to 100µA
f=10Hz to 10kHz
20
75
1
10
ΔV
R
ΔI
R
Z
R
E
N
Notes:
(*)
0.2
60
0.6
T
C
=
Note: V
R(MAX)
- V
R
(MIN)
is the maximum deviation in reference
voltage measured over the full operating temperature range.
(†)
0.5% SOT23 only
.
ZXRE1004
Document number: DS32172 Rev. 4 - 2
2 of 5
www.diodes.com
June 2010
© Diodes Incorporated
A Product Line of
Diodes Incorporated
ZXRE1004
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Copyright © 2010, Diodes Incorporated
www.diodes.com
ZXRE1004
Document number: DS32172 Rev. 4 - 2
5 of 5
www.diodes.com
June 2010
© Diodes Incorporated
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