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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 precisi on
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.
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
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 equipment
• Precision power supplies
• Portable instrumentation
• Portable communications devices
• Notebook and palmtop computers
• Data acquisition systems
• A/D and D/A converters
• Test equipment
Applications Circuit
ZXRE1004
Document number: DS32172 Rev. 4 - 2
www.diodes.com
Schematic Diagram
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Absolute Maximum Ratings (Voltages to GND Unless Otherwise Stated)
Parameter Rating Unit
Reverse Current 30 mA
Forward Current 10 mA
Operating Temperature -40 to 85 °C
Storage Temperature -55 to 125 °C
Power Dissipation (T
SOT23
AMB
= 25°C)
330 mW
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ZXRE1004
Electrical Characteristics (Test conditions: T
Symbol Parameter Condition Min. Typ. Max.
VR
I
MIN
IR
(*)
T
C
ΔVR
ΔIR
ZR
EN
Notes:
Note: V
voltage measured over the full operating temperature range.
.
ZXRE1004
Document number: DS32172 Rev. 4 - 2
Reverse breakdown voltage
IR = 100µA
Minimum knee current 4 8
Recommended operating current
range
Average reverse breakdown voltage
temperature coefficient
Reverse breakdown voltage change
with current
Reverse dynamic impedance
Wideband noise voltage
– V
(*)
TC =
R(MAX)
(†)
0.5% SOT23 only
(V
R(MAX
- V
V
R
R(MIN)
x (T
) x 1000000
R(MIN
– T
MAX
is the maximum deviation in reference
MIN
)
0.008 20 mA
I
R(MIN)
I
R
IR=1mA to 20mA
I
R
f = 100Hz
I
AC
I
R
f=10Hz to 10kHz
= 25°C, unless otherwise specified.)
amb
1.208
1.183
to I
R(MAX)
=8µA to 1mA
20 75
= 1mA
0.2 0.6
= 0.1IR
=8µA to 100µA
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60
1.22
1.22
1.232
1.257
1
10
Tol.
(%)
Unit
1
3
ppm/°C
mV
µV(rms)
June 2010
© Diodes Incorporated
V
µA
Ω
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ZXRE1004
Typical Characteristics
ZXRE1004
Document number: DS32172 Rev. 4 - 2
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ZXRE1004
Ordering Information
(*)
Order
Reference
ZXRE1004CFTA 0.5 SOT23 10D Obsolete 7 3000 8
ZXRE1004DFTA 1 SOT23 10C Released 7 3000 8
ZXRE1004EFTA 2 SOT23 10B NRND 7 3000 8
ZXRE1004FFTA 3 SOT23 10A Released 7 3000 8
Notes: *All ZXRE1004xR variants (E-Line) are obsolete.
NRND = Not Recommended for New Designs
For tape and reel options add suffix TA to the part number eg ZXRE1004DFTA
Tol
(%)
Package
Device
Mark
Status (*)
Reel Size
(inches)
Quantity
per reel
Tape Width
(mm)
Package Outline Dimensions
SOT23
E
e
b
e1
3leads
L1
E1
D
A
A1
L
c
Dim. Millimeters Inches Dim. Millimeters Inches
Min. Max. Min. Max. Min. Max. Min. Max.
A - 1.12 - 0.044 e1 1.90 NOM 0.075 NOM
A1 0.01 0.10 0.0004 0.004 E 2.10 2.64 0.083 0.104
b 0.30 0.50 0.012 0.020 E1 1.20 1.40 0.047 0.055
c 0.085 0.20 0.003 0.008 L 0.25 0.60 0.0098 0.0236
D 2.80 3.04 0.110 0.120 L1 0.45 0.62 0.018 0.024
e 0.95 NOM 0.037 NOM - - - - -
Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches
ZXRE1004
Document number: DS32172 Rev. 4 - 2
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ZXRE1004
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
trademark rights, nor the rights of others. Any Customer or user of this document or products des cribed herein in such applications shall
assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes
Incorporated website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales
channel.
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and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of,
directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
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markings noted herein may also be covered by one or more United States, international or foreign trademarks.
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.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause
the failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems,
and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products
and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systemsrelated information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and
its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or
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Copyright © 2010, Diodes Incorporated
IMPORTANT NOTICE
LIFE SUPPORT
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ZXRE1004
Document number: DS32172 Rev. 4 - 2
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