FEATURES
High performance alternative to REF1004,
LT1004 and LM185/385 references
4A typical knee current
Small outline SOT23 package
SO8 and E-Line alternatives available
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 ZXRE1004 is a 1.22 volt bandgap reference circuit
designed for ultra low current operation, typically 4
A.
The device is available in a SOT23 surface mount
package offering the ultimate in space and power
saving. These features make the ZXRE1004 particularly
suitable for portable and battery powered applications.
SOT23 tolerance selection is available to 0.5% for
precision applications. Excellent performance is
maintained over the 8
A to 20mA 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.
As well as the SOT23, the ZXRE1004 can offer a pin for
pin compatible alternative to the REF1004, LT1004 and
LM185/385 series of voltage references with SO8 and
E-Line (TO92 style) equivalents .
V
R
G
nd
SOT23 MICROPOWER (4
A) 1.22V VOLTAGE REFERENCE
1
1.5V
27k
1.22V
SCHEMATIC DIAGRAM
APPLICATIONS CIRCUIT
Ultra low quiescent reference from a 1.5V battery
source.
ZXRE1004
ISSUE 2 - JUNE 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
TOL. %
UNITS
MIN
TYP
MAX
V
R
Reverse Breakdown Voltage
I
R
=100
A
1.214
1.208
1.196
1.183
1.22
1.22
1.22
1.22
1.226
1.232
1.244
1.257
0.5
1
2
3
V
I
MIN
Minimum Knee Current
4
8
A
I
R
Recommended Operating
Current Range
0.008
20
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
=8
A to 1mA
I
R
=1mA to 20mA
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)
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
Reverse Voltage (V)
Reverse Characteristics
0
2
4
6
8
10
R
everse Current (
A)
-40C
25C
85C
T
C
V
R
max
V
R
m in
x 1000000
V
R
x
T
max
T
min
Note: V
R(m ax )
- V
R(min )
is the maximum
deviation in reference voltage
measured over the full operating
temperature range.
Note: 0.5% SOT23 only
ZXRE1004
ISSUE 2 - JUNE 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
lt
ag
e
(V)
0.01
0.1
1
10
100
Frequency (kHz)
Slope Resistance v Frequency
0.1
1
10
100
S
l
ope
R
e
si
st
a
n
ce
(
)
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
b
a
nd
N
o
i
s
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
Fo
r
w
ar
d
V
o
l
t
ag
e
(V
)
85C
ZXRE1004
ISSUE 2 - JUNE 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%
Package
Partmarking
ZXRE1004CF
0.5
SOT23
10D
ZXRE1004DF
1
SOT23
10C
ZXRE1004EF
2
SOT23
10B
ZXRE1004FF
3
SOT23
10A
ZXRE1004DN8
1
SO8
ZXRE1004D
ZXRE1004EN8
2
SO8
ZXRE1004E
ZXRE1004FN8
3
SO8
ZXRE1004F
ZXRE1004DR
1
E-Line
ZXRE1004D
ZXRE1004ER
2
E-Line
ZXRE1004E
ZXRE1004FR
3
E-Line
ZXRE1004F
Contact Zetex marketing for availability of these package options
NOTE:
for tape and reel options add suffix TA to the part number
eg ZXRE1004DFTA
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
ZXRE1004
ISSUE 2 - JUNE 1999
PDF 
ZIP