FEATURES
High performance alternative to LM4041
Small outline SOT23
SO8 and E-Line alternatives available
30A 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 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. SO8 and
E-Line (TO92 style) packages can also be made
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 2 - JULY 1999
ABSOLUTE MAXIMUM RATINGS
Reverse Current
30mA
Forward Current
10mA
Operating temperature.
-40 to 85C
Storage temperature.
-55 to 125C
Power Dissipation (T
amb
=25C)
SOT23
330mW
SO8
625mW
E-Line
500mW
2
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated) T
amb
=25C
SYMBOL
PARAMETER
CONDITIONS
LIMITS
GRADE
UNITS
MIN
TYP
MAX
V
R
Reverse Breakdown Voltage
I
R
=100
A
1.214
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
I
MIN
Minimum Knee Current
30
A
I
R
Recommended Operating
Current Range
0.03
12
mA
T
C
Average Reverse Breakdown
Voltage Temperature
Coefficient
I
R(min)
to I
R(max)
20
75
ppm/C
V
R
I
R
Reverse Breakdown Voltage
change with Current
I
R
=30
A to 1mA
I
R
=1mA to 12mA
1
10
mV
mV
Z
R
Reverse Dynamic Impedance
I
R
=1mA
f =100Hz
I
AC
=0.1 I
R
0.2
0.6
E
N
Wideband Noise Voltage
I
R
=8
A to 100A
f=10Hz to 10kHz
60
V(rms)
T
C
V
R
max
V
R
min
x 1000000
V
R
x
T
max
T
min
Not e: V
R(max)
- V
R(min)
is t he maximum
deviat ion in reference volt age
measured over t he full operat ing
t emperat ure range.
Not e: 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
Rev
e
r
s
e Cu
r
r
en
t
(
m
A
)
TA=-40c TO +85C
ZXRE4041
ISSUE 2 - JULY 1999
3
TYPICAL CHARACTERISTICS
-40
-20
0
20
40
60
80
Temperature (C)
Temperature Drift
1.19
1.20
1.21
1.22
1.23
1.24
1.25
Refe
r
e
n
c
e V
o
l
t
ag
e (V
)
0.01
0.1
1
10
100
Frequency (kHz)
Slope Resistance v Frequency
0.1
1
10
100
Sl
o
p
e Re
s
i
s
t
a
n
c
e
(
)
20mA
1mA
100
A
0
40
80
120
140
Time (
s)
Transient Response
0
0.5
1.5
1.0
10
0
I
in
(
A)
V
R
(V
)
10
A
20mA
0
10
20
30
40
50
60
70
80
90
100
Reference Current (
A)
Noise Voltage
0
10
20
30
40
50
60
70
80
Wi
de
ba
n
d
N
o
is
e
(
V)
100
10
1
0.1
0.01
0.001
Reference Current (mA)
Slope Resistance v Current
0
2
4
6
8
10
12
14
S
l
ope
R
e
si
st
a
n
ce
(
)
25C
-40C
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
F
o
r
w
ar
d
V
o
ltag
e (V)
85C
ZXRE4041
ISSUE 2 - JULY 1999
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
Streitfeldstrae 19
47 Mall Drive, Unit 4
3510 Metroplaza, Tower 2
agents and distributors in
D-81673 Mnchen
Commack NY 11725
Hing Fong Road,
major countries world-wide
Germany
USA
Kwai Fong, Hong Kong
Zetex plc 1999
Telefon: (49) 89 45 49 49 0
Telephone: (516) 543-7100
Telephone:(852) 26100 611
Fax: (49) 89 45 49 49 49
Fax: (516) 864-7630
Fax: (852) 24250 494
Internet:http://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
ZXRE4041DN8
1
D
SO8
ZXRE4041D
ZXRE4041EN8
2
E
SO8
ZXRE4041E
ZXRE4041FN8
3
F
SO8
ZXRE4041F
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
SO8
Package
Suffix N8
Top
View
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 2 - JULY 1999
PDF 
ZIP