1
Date: 5/25/04 SPX1004 1.2V/2.5V Micropower Voltage Reference
Copyright 2004 Sipex Corporation
SPX1004
FEATURES
Initial Voltage Tolerance:
SPX1004-1.2 =
4mV
SPX1004-2.5 =
20mV
Low Dynamic Impedance
0.6
Max.
Low Operating Current:
SPX1004-1.2 =
10
A
SPX1004-2.5 =
20
A
Wide Operating Current Range
10
A to 20mA
Direct Replacement for LT1004,
LM1004 and AS1004
APPLICATIONS
A/D and D/A Reference
Reference for 5V Systems
Digital Voltmeter
Power Supply Monitor
BLOCK DIAGRAMS
1.2V / 2.5V Micropower Voltage Reference
Figure 1a. SPX1004-1.2 Block Diagram
Figure 1b. SPX1004-2.5 Block Diagram
1.235V
+
-
Cathode (K)
Anode (A)
+
-
Cathode (K)
Anode (A)
1.250V
500k
500k
The SPX1004 is a 2-terminal bandgap precision voltage reference that provides a stable
fixed output voltage of 1.2V and 2.5V with a tolerance of
4mV for SPX1004-1.2 and
20mV
for SPX1004-2.5. Design, process and precision on chip trimming yield a very low tempera-
ture coefficient of 25 ppm/
C.
The SPX1004 can be used as a pin-to-pin replacement for the LT1004, LM1004 or AS1004.
The SPX1004 is available in SOT-89, SOIC-8 and TO-92 packages over the operating
temperature range of 0
C to 70
C.
DESCRIPTION
1
2
3
4
5
6
7
8
N/C
SPX1004
8 Pin nSOIC
CATHODE
N/C
N/C
N/C
ANODE
ANODE
CATHODE
Now Available in Lead Free Packaging
2
Date: 5/25/04 SPX1004 1.2V/2.5V Micropower Voltage Reference
Copyright 2004 Sipex Corporation
Electrical characteristics are guaranteed over full junction tepmerature range (0
C to 70C). Ambient tepmerature must be
derated based on power dissipation and package thermal characteristics.
SPX1004-1.2V
SPX1004-2.5V
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
Reverse breakdown
I
Z
=100
A, T
J
=25
C
1.231 1.235 1.239
2.480 2.500 2.520
V
0
C
T
A
70
C
1.225 1.235 1.245
2.470 2.500 2.530
Ave Temp. Coeff.
I
min
I
Z
20mA
20
60
ppm/
C
Min Operating Current
4
10
12
20
A
Reverse Breakdown
I
min
I
Z
1mA
0.5
1
0.5
1
mV
Votlage Change
over temperature
0.5
1.5
0.5
1.5
with Current
1mA
I
Z
20mA
6.5
10
6.5
10
over temperature
6.5
20
6.5
20
Reverse Dynamic
I
Z
=100
A, f=25Hz
0.2
0.6
0.8
0.9
Impedance
over temperature
1
1.5
1.5
Wide Band Noise
I
Z
=100
A, 10Hz
f
10kHz
60
120
V
Long Term Stability
I
Z
=100
A, T
A
=25
C
0.1
C
20
60
ppm/
kHr
Operating Temp Range
0
70
0
70
C
ABSOLUTE MAXIMUM RATINGS
Stresses greater than those listed under ABSOLUTE MAXIMUM
RATINGS may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at these or
any other conditions above those indicated in the operational sections
of this specification is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect reliability.
Forward Current (I
AK
).....................................................10mA
Reverse Current (I
KA
).....................................................30mA
Lead Temperature (soldering, 10 seconds).................300
C
Storage Temperature Range.......................-65
C to +150
C
Junction Temperature..................................................150
C
Continuous Power Dissipation (P
D
)
TO-92.........................................................775mW
SOIC-8.......................................................750mW
SOT-89.....................................................1000mW
VK
0
15
30
45
60
75
90
105
-10
0.5
5000
0
0
0
0.07 mV/C
0.003 %/C
27 ppm/C
TC in mV/C =
TC in % /C =
V
KA
(mV)
T
A
T
A
V
KA
at 25C
V
KA
x 100
(
)
TC in ppm/C =
T
A
V
KA
at 25C
V
KA
x 10
6
(
)
ppm
%
mV
Junction Temperature (C)
Figure 2. V
REF
vs Temperature for 2.5V Version
TYPICAL THERMAL RESISTANCES
PACKAGE
0
JA
0
JA
TYPICAL
DERATING
TO-92
160
C/W
80
C/W
6.3 mW/
C
SOIC-8
175
C/W
45
C/W
5.7mW/
C
SOT-89
110
C/W
8
C/W
9.1mW/
C
ELECTRICAL CHARACTERISTICS
3
Date: 5/25/04 SPX1004 1.2V/2.5V Micropower Voltage Reference
Copyright 2004 Sipex Corporation
Figure 3. SPX1004-1.2V Reverse Operating Characteristic
Figure 4. SPX1004-2.5 Reverse Operating Characteristic
Figure 5. SPX1004-1.2V Reverse Dynamic Impedance
Figure 6. SPX1004-2.5V Reverse Dynamic Impedance
Figure 7. Forward Characteristics for SPX1004-1.2
Figure 8. Low Frequency Reverse Dynamic Impedance
and SPX1004-2.5
for SPX1004-1.2
TYPICAL PERFORMANCE CHARACTERISTICS
100
10
1
0.1
T
A
= 0C to 70C
0.4
0.6
0.8
1.0
1.4
1.2
0
V
R
- Reverse Voltage (V)
I
KA
- Reverse Current (
A)
0.2
10k
1k
100
10
1
0.1
0.01
0.1
1
10
100
f = Frequency (kHz)
Z
K
A
- Reference Im
pedance (
)
1k
I
KA
= 100
A
T
A
= 25
C
10k
1k
100
10
1
0.1
0.01
0.1
1
10
100
f = Frequency (kHz)
Z
K
A
- R
eference Im
pedance (
)
1k
I
KA
= 100
A
T
A
= 25
C
1.2
0.8
0.4
0.0
0.01
0.1
1
10
100
T
A
= 25
C
I
F
= Forward Current (mA)
V
F
= Forward V
oltage (V)
100
10
1
0.1
0.5
1.0
1.5
2.0
3.0
2.5
0
T
A
= 0C to 70C
V
R
- Reverse Voltage (V)
I
KA
- Reverse Current (
A)
100
10
1
0.1
0.01
0.1
1
10
100
I
KA
= Reverse Current (mA)
Z
KA
= Reference Impedance (
)
T
A
= 25
C
f = 25Hz
4
Date: 5/25/04 SPX1004 1.2V/2.5V Micropower Voltage Reference
Copyright 2004 Sipex Corporation
APPLICATION CIRCUITS
Figure 11. Variable Output Regulator
Figure 12. High Stability 5V Regulator
Figure 13. Low Battery Detector
Figure 14. Micropower 10V Reference
Figure 9a. 1.2V Reference, Figure 9b. 2.5V Reference
Figure 10. Low Noise Reference
V
IN
3k
SPX1004-1.2V
OUT
V
IN
100k
SPX1004-2.5V
OUT
V
IN
100k
SPX1004-2.5V
OUT
22
50
F
SPX1004-2.5V
OUT
200
10
F
0.1
F
Adj
LM317
5k
+
R
V- 1V
0.015mA
V
IN
V
IN
V
OUT
V
IN
> 8V
SPX1004-2.5V
5V OUT
976
, 1%
V
IN
V
OUT
Adj
LM338
22
F
+
324
, 1%
LO = Battery Low
SPX1004-1.2
150pF
500k
86.7k
12V
+
500k
SPX1004-1.2
150pF
1M
3.5M
+
500k
LM4250
3
2
7
6
8
22M
V
IN
= 12V to 20V
4
5
Date: 5/25/04 SPX1004 1.2V/2.5V Micropower Voltage Reference
Copyright 2004 Sipex Corporation
PACKAGE: PINOUTS
Top View
SOT-89 (M1)
1
2
3
Bottom View
TO-92 (N)
1
3
2
CATHODE
N/C
Top View
2
1
3
4
8
7
6
5
SOIC (S2) Alternate Pin Out
CATHODE
ANODE
N/C
N/C
N/C
CATHODE
N/C
N/C
ANODE
CATHODE
ANODE
N/C
Top View
2
1
3
4
8
7
6
5
SOIC (S1)
CATHODE
ANODE
N/C
N/C
N/C
CATHODE
N/C
ANODE
Corporation
ANALOG EXCELLENCE
Sipex Corporation
Headquarters and
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
Ordering No.
Accuracy
Output Voltage
Packages
SPX1004M1-1.2
0.3%
1.235V
3-Pin SOT-89
SPX1004M1-1.2/TR
0.3%
1.235V
3-Pin SOT-89
SPX1004S1-1.2
0.3%
1.235V
8-Pin SOIC
SPX1004S1-1.2/TR
0.3%
1.235V
8-Pin SOIC
SPX1004S2-1.2
0.3%
1.235V
8-Pin SOIC,
alternate pinout
SPX1004S2-1.2/TR
0.3%
1.235V
8-Pin SOIC,
alternate pinout
SPX1004N-1.2
0.3%
1.235V
3-Pin TO-92
SPX1004N-1.2/TR
0.3%
1.235V
3-Pin TO-92
SPX1004M1-2.5
0.8%
2.500V
3-Pin SOT-89
SPX1004M1-2.5/TR
0.8%
2.500V
3-Pin SOT-89
SPX1004S1-2.5
0.8%
2.500V
8-Pin SOIC
SPX1004S1-2.5/TR
0.8%
2.500V
8-Pin SOIC
SPX1004S2-2.5
0.8%
2.500V
8-Pin SOIC,
alternate pinout
SPX1004S2-2.5/TR
0.8%
2.500V
8-Pin SOIC,
alternate pinout
SPX1004N-2.5
0.8%
2.500V
3-Pin TO-92
SPX1004N-2.5/TR
0.8%
2.500V
3-Pin TO-92
ORDERING INFORMATION
/TR = Tape and Reel
Pack quantity is 2,000 for TO-92,
2500 for NSOIC and SOT-89.
Available in lead free packaging. To order add "-L" suffix to part number.
Example: SPX1004N-1.2/TR = standard; SPX1004N-1.2-L/TR = lead free
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