FEATURES
High performan ce altern ative to LM4041
Small outline SOT23
SO8 and E-Line alternatives available
30
A knee current
20ppm/°C typical temperatu re coefficient
Unconditionally stable
0.5%, 1%, 2% and 3% tolerance
Contact Zetex marketing for availability of tighter
tolerance devices
APPLICATIONS
Battery po wer e d equ ip men t
Precision po wer supplies
Port a ble in s t r umenta t ion
Portable communications devices
Notebook an d palmtop compu t ers
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 sm all outline
SOT23 surface mount package which is ideal for
applications where space saving is importan t.
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 desi gned to be highl y
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 sou rce.
ZXRE4041
ISSUE 2 - JULY 1999
ABSOLUTE MAXIMUM RATINGS
Reverse Current 30mA
Forward Current 10mA
Operating temp eratu re. -40 to 85°C
Storage temper atur e. -55 to 125°C
Power D iss i pat i on (T amb=25°C)
SOT23 330mW
SO8 625mW
E-Line 500mW
2
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated) Tamb=25°C
SYMBOL PARAMETER CONDITIONS LIMITS GRADE UNITS
MIN TYP MAX
VRReve rse Break down Volta ge IR=100
A1.214
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 Kne e Current 30
A
IRRecommended Operat ing
Current Range 0.03 12 mA
TC †Avera ge Reverse B reakdown
Vo l t ag e Temperature
Coefficient
IR(min) to IR(max) 20 75 ppm/°C
VR
IR
Reve rse Break down Volta ge
change with Current IR=30
A 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
ENWideband Noise Voltage IR=8
A to 100
A
f=10Hz to 10kHz 60
V(rms)
† TC
VR
max
VR
min
x 100000 0
VR x
T
max
T
min
Note: VR(max) - VR(min) is t h e maximum
deviation in reference voltage
measured over the full operating
temperature 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
Reverse Current (mA)
TA=-40c TO +85C
ZXRE4041
ISSUE 2 - JULY 1999
3
TYPICAL CHARACTERISTICS
-40-20 0 20406080
Temp erature ( °C)
Temp erature Drift
1.19
1.20
1.21
1.22
1.23
1.24
1.25
Reference V oltage (V)
0.01 0.1 1 10 100
Frequency (kHz)
Slope Resistance v Frequency
0.1
1
10
100
Slope Resistance (
)
20mA
1mA
100
A
0 40 80 120 140
Time (
s)
Transient Response
0
0.5
1.5
1.0
10
0
Iin (
A) VR (V)
10
A
20mA
0 102030405060708090100
Referenc e Current (
A)
Noise Voltage
0
10
20
30
40
50
60
70
80
Wideband Noise (
V)
1001010.10.010.001 Reference Curren t (mA)
Slope Resistance v Current
0
2
4
6
8
10
12
14
Slope Resist a nce (
)
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
Forwar d Voltage (V)
85°C
⬇⬇
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)16 1 622 4420
Zet ex GmbH Zet ex Inc . Zet ex (Asia) Ltd. These are supported by
Streitfeldstraße 19 47 Mall Drive, Unit 4 3510 Metroplaza, Tower 2 agents and distributors in
D-81673 München Commack NY 11725 Hing Fong Road, major coun tries world-wide
German y USA Kwai Fo ng , Hon g K on g
Zet ex plc 1999
Telefon: (49) 89 45 49 49 0 Telephone: (516) 543-7100 Telephone:(852) 26100 611
Fax: (49) 8 9 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) ma y not be used, applied or reproduced for any
purpose or fo rm par t of any or de r or cont ract or be regard ed as a rep re sen ta ti o n re lat i ng to th e pr od uct s or ser vi ces con cer ne d. 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
conn ec te d to pi n 2
E-Line, 3 pin,Rev
Package Suffix – R
Bottom View –
Pin 3 floating or
conn ec te d to pin 1
Connection Diagrams
ZXRE4041
ISSUE 2 - JULY 1999
