ZXRE4041
SOT23 MICROPOWER 1.225V VOLTAGE REFERENCE
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
FEATURES
High performance alternative to LM4041
Small outline SOT23
SO8 and E-Line alternatives available
30 A 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
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. SO8 and
E-Line (TO92 style) packages can also be made
available.
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
V
R
APPLICATIONS CIRCUIT
G
nd
Low quiescent reference from a 1.5V battery source.
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1
ZXRE4041
ABSOLUTE MAXIMUM RATINGS
Reverse Current
Forward Current
Operating temperature.
Storage temperature.
30mA
10mA
-40 to 85°C
-55 to 125°C
Power Dissipation (T
amb
=25°C)
SOT23
330mW
SO8
625mW
E-Line
500mW
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated) T
amb
=25°C
SYMBOL
PARAMETER
CONDITIONS
LIMITS
MIN
TYP
1.225
1.225
1.225
1.225
MAX
1.226
1.232
1.244
1.257
30
0.03
I
R(min)
to I
R(max)
20
12
75
C‡
D
E
F
V
GRADE
UNITS
I
R
T
C
†
Recommended Operating
Current Range
Average Reverse Breakdown
Voltage Temperature
Coefficient
Reverse Breakdown Voltage
change with Current
Reverse Dynamic Impedance
mA
ppm/°C
I
R
5
Note: V
R(max)
- V
R(min)
is the maximum
deviation in reference voltage
measured over the full operating
temperature range.
‡ Note: C grade SOT23 only.
Reverse Current (mA)
T
C
V
R
x T
m ax
T
m in
†
m ax
min
V
R
V
R
x
1000000
4
3
TA=-40c TO +85C
2
1
0
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
Reverse Voltage (V)
Reverse Characteristics
ISSUE 2 - JULY 1999
2
E
N
Wideband Noise Voltage
I
R
=8 A to 100 A
f=10Hz to 10kHz
60
Z
R
I
R
=1mA
f =100Hz
I
AC
=0.1 I
R
V
R
I
R
=30 A to 1mA
I
R
=1mA to 12mA
0.2
1
10
0.6
mV
mV
I
MIN
Minimum Knee Current
V
R
Reverse Breakdown Voltage
I
R
=100 A
1.214
1.208
1.196
1.183
A
V (rms)
ZXRE4041
TYPICAL CHARACTERISTICS
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.1
1
10
100
1000
1.25
1.24
Reference Voltage (V)
Forward Voltage (V)
1.23
1.22
1.21
1.20
1.19
-40
-20
0
20
40
60
80
Forward Current (mA)
Temperature (°C)
Forward Characteristics
Temperature Drift
14
12
100
Slope Resistance ( )
10
8
6
4
2
0
0.001
-40°C
25°C
85°C
0.01
0.1
1
10
100
0.1
0.01
0.1
1
Reference Current (mA)
Frequency (kHz)
Slope Resistance v Current
1.5
1.0
0.5
10 A
20mA
Slope Resistance v Frequency
80
70
Wideband Noise ( V)
V
R
(V)
60
50
40
30
20
10
0
0
10 20
30
40
50
60
70
80
90
100
0
Transient Response
Noise Voltage
ISSUE 2 - JULY 1999
3
I
in
( A)
10
0
0
40
80
120
140
Time ( s)
Reference Current ( A)
Slope Resistance ( )
10
1
20mA
1mA
100 A
10
100
ZXRE4041
Ordering Information
Device
ZXRE4041CF
ZXRE4041DF
ZXRE4041EF
ZXRE4041FF
ZXRE4041DN8
ZXRE4041EN8
ZXRE4041FN8
ZXRE4041DR
ZXRE4041ER
ZXRE4041FR
†
†
†
†
†
†
TOL%
0.5
1
2
3
1
2
3
1
2
3
Grade
C
D
E
F
D
E
F
D
E
F
Package
SOT23
SOT23
SOT23
SOT23
SO8
SO8
SO8
E-Line
E-Line
E-Line
Partmarking
10J
10H
10G
10F
ZXRE4041D
ZXRE4041E
ZXRE4041F
ZXRE4041D
ZXRE4041E
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
Connection Diagrams
SOT23
Package Suffix – F
SO8
Package Suffix – N8
E-Line, 3 pin,Rev
Package Suffix – R
Top View –
Pin 1 floating or
connected to pin 2
Top View
Bottom View –
Pin 3 floating or
connected to pin 1
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
Streitfeldstraße 19
D-81673 München
Germany
Telefon: (49) 89 45 49 49 0
Fax: (49) 89 45 49 49 49
Zetex Inc.
47 Mall Drive, Unit 4
Commack NY 11725
USA
Telephone: (516) 543-7100
Fax: (516) 864-7630
Zetex (Asia) Ltd.
3510 Metroplaza, Tower 2
Hing Fong Road,
Kwai Fong, Hong Kong
Telephone:(852) 26100 611
Fax: (852) 24250 494
These are supported by
agents and distributors in
major countries world-wide
Zetex plc 1999
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.
ISSUE 2 - JULY 1999
4
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