FEATURES
•High performance alternative to LM4041
•Small outline SOT23
•E-Line alternative available
•30µA knee current
•20ppm/°C typical temperature coefficient
•Unconditionally stable
•0.5%, 1%, 2% and 3% tolerance
•Contact Zetex marketing for availability of tighter
tolerance devices
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
DESCRIPTION
The ZXRE4041 is a bandgap circuit designed 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 30µA 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. An E-Line
(TO92 style) package is also available.
V
R
G
nd
SOT23 MICROPOWER 1.225V VOLTAGE REFERENCE
1
SCHEMATIC DIAGRAM APPLICATIONS CIRCUIT
Low quiescent reference from a 1.5V battery source.
ZXRE4041
ISSUE 4 - JANUARY 2003
ABSOLUTE MAXIMUM RATINGS
Reverse Current 30mA
Forward Current 10mA
Operating temperature. -40 to 125°C
Storage temperature. -55 to 125°C
Power Dissipation (Tamb=25°C)
SOT23 330mW
E-Line 500mW
2
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated) Tamb=25°C
SYMBOL PARAMETER CONDITIONS LIMITS GRADE UNITS
MIN TYP MAX
VRReverse Breakdown Voltage IR=100µA1.214
1.208
1.196
1.183
1.225
1.225
1.225
1.225
1.226
1.232
1.244
1.257
C ‡
D
E
F
V
IMIN Minimum Knee Current 30 µA
IRRecommended Operating
Current Range
0.03 12 mA
TC †Average Reverse Breakdown
Voltage Temperature
Coefficient
IR(min) to
IR(max)
20 75 ppm/°C
∆VR
∆IR
Reverse Breakdown Voltage
change with Current
IR=30µA to 1mA
IR=1mA to 12mA
1
10
mV
mV
ZRReverse Dynamic Impedance IR =1mA
f =100Hz
IAC=0.1 IR
0.2 0.6 Ω
ENWideband Noise Voltage IR=8µA to 100µA
f=10Hz to 10kHz
60 µV(rms)
† TC = (VR (max
)−VR ( min
)) x 1000000
VR x (T(max
)−T(min
))
Note: VR(max) - VR(min) is the
maximum deviation in reference
voltage measured from -40°C to 85°C.
‡ Note: C grade SOT23 only.
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
Reverse Voltage (V)
Reverse Characteristics
0
1
2
3
4
5
Reverse Current (mA)
TA=-40c TO +85C
ZXRE4041
ISSUE 4 - JANUARY 2003
3
TYPICAL CHARACTERISTICS
-40-20 0 20406080
Temperature (°C)
Temperature Drift
1.19
1.20
1.21
1.22
1.23
1.24
1.25
Reference Voltage (V)
0.01 0.1 1 10 100
Frequency (kHz)
Slope Resistance v Frequency
0.1
1
10
100
Slope Resistance (Ω)
20mA
1mA
100µA
0 40 80 120 140
Time (µs)
Transient Response
0
0.5
1.5
1.0
10
0
I
in
(µA) V
R
(V)
10µA
20mA
0 102030 405060708090100
Reference Current (µA)
Noise Voltage
0
10
20
30
40
50
60
70
80
Wideband Noise (µV)
1001010.10.010.001
Reference Current (mA)
Slope Resistance v Current
0
2
4
6
8
10
12
14
Slope Resistance (Ω)
25°C
-40°C
0.1 1 10 100 1000
Forward Current (mA)
Forward Characteristics
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
Forward Voltage (V)
85°C
僓僓
ZXRE4041
ISSUE 4 - JANUARY 2003
4
Zetex plc.
Fields New Road, Chadderton, Oldham, OL9-8NP, United Kingdom.
Telephone: (44)161 622 4422 (Sales), (44)161 622 4444 (General Enquiries)
Fax: (44)161 622 4420
Zetex GmbH Zetex Inc. Zetex (Asia) Ltd. These are supported by
Streitfeldstraße 19 700 Veteran’s Memorial Hwy 3701-04 Metroplaza, Tower 1 agents and distributors in
D-81673 München Hauppauge, NY 11788 Hing Fong Road, major countries world-wide
Germany USA Kwai Fong, Hong Kong Zetex plc 2003
Telefon: (49) 89 45 49 49 0 Telephone: (631) 360-2222 Telephone:(852) 26100 611
Fax: (49) 89 45 49 49 49 Fax: (631) 360-8222 Fax: (852) 24250 494 www.zetex.com
This publication is issued to provide outline information only which (unless agreed by the Company in writing) may not be used, applied or reproduced for any
purpose or form part of any order or contract or be regarded as a representation relating to the products or services concerned. The Company reserves the
right to alter without notice the specification, design, price or conditions of supply of any product or service.
Ordering Information
Device TOL% Grade Package Partmarking
ZXRE4041CF 0.5 C SOT23 10J
ZXRE4041DF 1 D SOT23 10H
ZXRE4041EF 2 E SOT23 10G
ZXRE4041FF 3 F SOT23 10F
ZXRE4041DR †1 D E-Line ZXRE4041D
ZXRE4041ER †2 E E-Line ZXRE4041E
ZXRE4041FR †3 F E-Line ZXRE4041F
†Contact Zetex marketing for availability of these package options
NOTE:
for tape and reel options add suffix TA to the part number
eg ZXRE4041DFTA
SOT23
Package Suffix – F
Top View –
Pin 1 floating or
connected to pin 2
E-Line, 3 pin,Rev
Package Suffix – R
Bottom View –
Pin 3 floating or
connected to pin 1
Connection Diagrams
ZXRE4041
ISSUE 4 - JANUARY 2003
