1
SEMICONDUCTORS
SUMMARY
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 30␮A 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
•30␮A knee current
•20ppm/°C typical temperature coefficient
•Unconditionally stable
•0.5%, 1%, 2% and 3% tolerance
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
ZXRE4041
ISSUE 5 - AUGUST 2003
SOT23 MICROPOWER 1.225V VOLTAGE REFERENCE
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
ORDERING INFORMATION
NOTE:
For tape and reel options add suffix TA to part number - e.g. ZXRE4041DFTA
Top view -
Pin 1 floating or
connected to pin 2
SOT23
Package Suffix - F
SOT23
ZXRE4041
SEMICONDUCTORS
ISSUE 5 - AUGUST 2003
2
PARAMETER SYMBOL LIMIT UNIT
Reverse current VZ30 mA
Forward current 10 mA
Operating temperature TOMP -40 to 125 °C
Storage temperature TSTG -55 to 125 °C
ABSOLUTE MAXIMUM RATINGS
PACKAGE VALUE UNIT
SOT23 330 mW
POWER DISSIPATION (at Tamb = 25°C, Tjmax = 25°C)
ZXRE4041
SEMICONDUCTORS
ISSUE 5 - AUGUST 2003
3
SCHEMATIC DIAGRAM
APPLICATIONS CIRCUIT
ZXRE4041
SEMICONDUCTORS
ISSUE 5 - AUGUST 2003
4
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. GRADE/
TOL% UNITS
Reverse Breakdown Voltage VRIR= 100␮A 1.219
1.213
1.200
1.189
1.225
1.225
1.225
1.225
1.231
1.237
1.250
1.261
C/0.5
D/1
E/2
F/3
V
V
V
V
Minimum Knee Current IMIN 30 ␮A
Recommended Operating
Current Range IR0.03 12 mA
Average Reverse
Breakdown Voltage
Temperature Coefficient
TC(1) IR(min) to IR(max) 20 100 ppm/°C
Reverse Breakdown Change
with Current Voltage
∆
∆
V
I
R
R
IR= 30␮Ato1␮A
IR= 1mA to 12mA 1
10 mV
mV
Reverse Dynamic
Impedance ZRIR= 1mA
f = 100Hz
IAC = 0.1IR
0.2 0.6 ⍀
Wideband Noise Voltage ENIR=8␮A to 100␮A
f = 10Hz to 10kHz 60 ␮V(rms)
ELECTRICAL CHARACTERISTICS (at Tamb = 25°C unless otherwise stated)
NOTE:
(1)
TVVx
VxT T
CRR
R
=
−
−
()
()
(max) (min)
(max) (min)
1000000
VR(max) - VR(min) is the maximum deviation in reference voltage measured from -40°C to 85°C.
REVERSE CHARACTERISTICS
ZXRE4041
SEMICONDUCTORS
ISSUE 5 - AUGUST 2003
5
TYPICAL CHARACTERISTICS
ZXRE4041
SEMICONDUCTORS
6
ISSUE 5 - AUGUST 2003
Europe
Zetex plc
Fields New Road
Chadderton
Oldham, OL9 8NP
United Kingdom
Telephone (44) 161 622 4444
Fax: (44) 161 622 4446
hq@zetex.com
Zetex GmbH
Streitfeldstraße 19
D-81673 München
Germany
Telefon: (49) 89 45 49 49 0
Fax: (49) 89 45 49 49 49
europe.sales@zetex.com
Americas
Zetex Inc
700 Veterans Memorial Hwy
Hauppauge, NY 11788
USA
Telephone: (1) 631 360 2222
Fax: (1) 631 360 8222
usa.sales@zetex.com
Asia Pacific
Zetex (Asia) Ltd
3701-04 Metroplaza Tower 1
Hing Fong Road
Kwai Fong
Hong Kong
Telephone: (852) 26100 611
Fax: (852) 24250 494
asia.sales@zetex.com
These offices are supported by agents and distributors in major countries world-wide.
Thispublicationisissuedtoprovideoutlineinformationonlywhich(unlessagreedbytheCompanyinwriting)maynotbeused,appliedorreproduced
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.
For the latest product information, log on to www.zetex.com
© Zetex plc 2003
Controlling dimensions are in millimetres. Approximate conversions are given in inches
PACKAGE OUTLINE PAD LAYOUT
DIM Millimetres Inches DIM Millimetres Inches
Min Max Min Max Min Max Min Max
A 2.67 3.05 0.105 0.120 G NOM 1.9 NOM 0.037
B 1.20 1.40 0.047 0.055 K 0.01 0.10 0.0004 0.004
C – 1.10 – 0.043 L 2.10 2.50 0.083 0.0985
D 0.37 0.53 0.0145 0.021 N NOM 0.95 NOM 0.037
F 0.085 0.15 0.0033 0.0059
PACKAGE DIMENSIONS