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SPX1004
1.2V / 2.5V Micropower Voltage Reference
FEATURES Initial Voltage Tolerance: SPX1004-1.2 = 5mV SPX1004-2.5 = 20mV Low Dynamic Impedance 0.6 Max. Low Operating Current: SPX1004-1.2 = 10A SPX1004-2.5 = 20A Wide Operating Current Range 10A to 20mA Direct Replacement for LT1004, LM1004 and AS1004
N/C 1 8 CATHODE N/C 2
SPX1004 8 Pin nSOIC
7 N/C
N/C 3 ANODE 4
6 CATHODE 5 ANODE
Now Available in Lead Free Packaging
APPLICATIONS A/D and D/A Reference Reference for 5V Systems Digital Voltmeter Power Supply Monitor DESCRIPTION
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 5mV for SPX1004-1.2 and 20mV for SPX1004-2.5. Design, process and precision on chip trimming yield a very low temperature 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 0C to 70C. BLOCK DIAGRAMS
Cathode (K)
Cathode (K)
500k
+ 1.235V
500k
+ 1.250V
Anode (A)
Anode (A)
Figure 1a. SPX1004-1.2 Block Diagram
Date: 11/29/04
Figure 1b. SPX1004-2.5 Block Diagram
(c) Copyright 2004 Sipex Corporation
SPX1004 1.2V/2.5V Micropower Voltage Reference
1
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.
Continuous Power Dissipation (PD) TO-92.........................................................775mW SOIC-8.......................................................750mW SOT-89.....................................................1000mW
Forward Current (IAK).....................................................10mA Reverse Current (IKA).....................................................30mA Lead Temperature (soldering, 10 seconds).................300C Storage Temperature Range.......................-65C to +150C Junction Temperature..................................................150C
TYPICAL THERMAL RESISTANCES
PACKAGE TO-92 SOIC-8 SOT-89 0JA 160C/W 175C/W 110C/W 0JA 80C/W 45C/W 8C/W TYPICAL DERATING 6.3 mW/C 5.7mW/C 9.1mW/C
ELECTRICAL CHARACTERISTICS
Electrical characteristics are guaranteed over full junction temperature range (0C to 70C). Ambient temperature 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 IZ=100A, TJ=25C 1.230 1.235 1.240 2.480 2.500 2.520 V 0CTA70C 1.224 1.235 1.246 2.470 2.500 2.530 Ave Temp. Coeff. IminIZ20mA 20 60 ppm/ C Min Operating Current 4 10 12 20 A Reverse Breakdown IminIZ1mA 0.5 1 0.5 1 mV Voltage Change over temperature 0.5 1.5 0.5 1.5 with Current 1mAIZ20mA 6.5 10 6.5 10 over temperature 6.5 20 6.5 20 Reverse Dynamic IZ=100A, f=25Hz 0.2 0.6 0.8 0.9 Impedance over temperature 1 1.5 1.5 Wide Band Noise IZ=100A, 10Hzf10kHz 60 120 V Long Term Stability IZ=100A, TA=25C0.1C 20 60 ppm/ kHr Operating Temp Range 0 70 0 70 C
ppm 0
% 0
mV 0 VK TC in mV/C = VKA (mV)
TA
-10 5000 0.5 TC in % /C =
(
VKA VKA at 25C TA
)
x 100
0
15
30 45 60 75 90 Junction Temperature (C)
105
TC in ppm/C =
(
VKA VKA at 25C TA
)
x 106
0.07 mV/C 0.003 %/C 27 ppm/C
Figure 2. VREF vs Temperature for 2.5V Version
Date: 11/29/04 SPX1004 1.2V/2.5V Micropower Voltage Reference (c) Copyright 2004 Sipex Corporation
2
TYPICAL PERFORMANCE CHARACTERISTICS
100 TA = 0C to 70C
100 TA = 0C to 70C
- Reverse Current (A) I
KA
IKA - Reverse Current (A)
10
10
1
1
0.1 0 0.2 0.4
R
0.1
0.6
0.8
1.0
1.2
1.4
0
0.5
1.0
R
1.5
2.0
2.5
3.0
V - Reverse Voltage (V)
V - Reverse Voltage (V)
Figure 3. SPX1004-1.2V Reverse Operating Characteristic
Figure 4. SPX1004-2.5 Reverse Operating Characteristic
10k IKA = 100A TA = 25C
ZKA- Reference Impedance ()
10k IKA = 100A TA = 25C 1k
ZKA- Reference Impedance ()
1k
100
100
10
10
1
1
0.1 0.01
0.1
1
10
100
1k
0.1 0.01
0.1
1
10
100
1k
f = Frequency (kHz)
f = Frequency (kHz)
Figure 5. SPX1004-1.2V Reverse Dynamic Impedance
Figure 6. SPX1004-2.5V Reverse Dynamic Impedance
1.2 TA = 25C
ZKA = Reference Impedance ()
100
VF = Forward Voltage (V)
TA = 25C f = 25Hz 10
0.8
0.4
1
0.0 0.01
0.1
1
10
100
0.1 0.01
0.1
1
10
100
IF = Forward Current (mA)
IKA = Reverse Current (mA)
Figure 7. Forward Characteristics for SPX1004-1.2 and SPX1004-2.5
Figure 8. Low Frequency Reverse Dynamic Impedance for SPX1004-1.2
Date: 11/29/04
SPX1004 1.2V/2.5V Micropower Voltage Reference
(c) Copyright 2004 Sipex Corporation
3
APPLICATION CIRCUITS
VIN
VIN
VIN
3k
100k
100k 22
OUT SPX1004-1.2V
OUT SPX1004-2.5V
OUT SPX1004-2.5V 50F
Figure 9a. 1.2V Reference, Figure 9b. 2.5V Reference
Figure 10. Low Noise Reference
VIN LM317 VIN Adj 0.1F 200 + 10F VOUT OUT
VIN > 8V LM338 VIN Adj 976, 1% + 22F 324, 1% VOUT 5V OUT
SPX1004-2.5V
5k
SPX1004-2.5V
R V - 1V 0.015mA
Figure 11. Variable Output Regulator
Figure 12. High Stability 5V Regulator
VIN = 12V to 20V
LO = Battery Low 86.7k 500k
1M
7 3
+ 12V 500k
2
+ LM4250 -
4 8
6
- 150pF
22M
150pF
3.5M
SPX1004-1.2
SPX1004-1.2
500k
Figure 13. Low Battery Detector
Figure 14. Micropower 10V Reference
Date: 11/29/04
SPX1004 1.2V/2.5V Micropower Voltage Reference
(c) Copyright 2004 Sipex Corporation
4
PACKAGE: PINOUTS
SOIC (S1)
N/C N/C N/C ANODE 1 2 3 4 8 7 6 5 CATHODE N/C CATHODE ANODE
SOIC (S2) Alternate Pin Out
N/C N/C N/C ANODE 1 2 3 4 8 7 6 5 CATHODE N/C
SOT-89 (M1)
1
TO-92 (N)
2 3
1 CATHODE CATHODE N/C
2
3 N/C N/C ANODE CATHODE
ANODE
Top View
Top View
Top View
Bottom View
PACKAGE: 3 PIN SOT-89
D
D1 3
O1.0 E H 5(2x)
L
1 e
2
e1
C
SYMBOL b L b1 C D D1 H E e e1
3 Pin SOT-89 MIN NOM 0.36 0.42 0.8 0.41 0.47 0.38 0.4 4.4 4.5 1.4 1.6 3.94 2.4 2.5 1.45 1.5 2.9 3
8(2x)
MAX 0.48 1.2 0.53 0.43 4.6 1.75 4.25 2.6 1.55 3.1
Ro.15
b
b1
b
Note: Dimensions in (mm)
Date: 11/29/04
SPX1004 1.2V/2.5V Micropower Voltage Reference
(c) Copyright 2004 Sipex Corporation
5
PACKAGE: 8 PIN NSOIC
D e O
E/2 E1/2 E1 L2 E Seating Plane O1 L1
1
L Gauge Plane
O
b
VIEW C
INDEX AREA (D/2 X E1/2)
TOP VIEW
A
A1 Seating Plane A2
SIDE VIEW
8 Pin NSOIC JEDEC MO-012 (AA) Variation MIN NOM MAX SYMBOL A 1.35 1.75 A1 0.1 0.25 A2 1.25 1.65 b 0.31 0.51 c 0.17 0.24 4.90 BSC D 6.00 BSC E 3.90 BSC E1 1.27 BSC e L 0.4 1.27 1.04 REF L1 0.25 BSC L2 o 0 8 o1 5 15 Note: Dimensions in (mm)
B
B
SEE VIEW C
b
c
BASE METAL
SECTION B-B WITH PLATING
Date: 11/29/04
SPX1004 1.2V/2.5V Micropower Voltage Reference
(c) Copyright 2004 Sipex Corporation
6
PACKAGE: 3 PIN TO-92
L
e
e1 W
D
A
b
S1
SYMBOL A b E e e1 L R S1 W D a
3 Pin TO-92 MIN NOM 0.17 0.014 0.13 0.95 0.045 0.5 0.085 0.045 0.016 0.175 4 -
MAX 0.195 0.02 0.155 0.105 0.055 0.61 0.095 0.06 0.022 0.195 6
R
E
Note: Dimensions in (inches)
a(2x)
Date: 11/29/04
SPX1004 1.2V/2.5V Micropower Voltage Reference
(c) Copyright 2004 Sipex Corporation
7
ORDERING INFORMATION Part Number
SPX1004AM1-1.2 SPX1004AM1-1.2/TR SPX1004AS1-1.2 SPX1004AS1-1.2/TR SPX1004AS2-1.2 SPX1004AS2-1.2/TR SPX1004AN-1.2 SPX1004AN-1.2/TR SPX1004M1-2.5 SPX1004M1-2.5/TR SPX1004S1-2.5 SPX1004S1-2.5/TR SPX1004S2-2.5 SPX1004S2-2.5/TR SPX1004N-2.5 SPX1004N-2.5/TR
Accuracy
0.4% 0.4% 0.4% 0.4% 0.4% 0.4% 0.4% 0.4% 0.8% 0.8% 0.8% 0.8% 0.8% 0.8% 0.8% 0.8%
Output Voltage
1.235V 1.235V 1.235V 1.235V 1.235V 1.235V 1.235V 1.235V 2.500V 2.500V 2.500V 2.500V 2.500V 2.500V 2.500V 2.500V
Packages
3-Pin SOT-89 3-Pin SOT-89 8-Pin NSOIC 8-Pin NSOIC 8-Pin NSOIC, alternate pinout 8-Pin NSOIC, alternate pinou 3-Pin TO-92 3-Pin TO-92 3-Pin SOT-89 3-Pin SOT-89 8-Pin NSOIC 8-Pin NSOIC 8-Pin NSOIC, alternate pinout 8-Pin NSOIC, alternate pinout 3-Pin TO-92 3-Pin TO-92
Available in lead free packaging. To order add "-L" suffix to part number. Example: SPX1004N-2.5/TR = standard; SPX1004N-L-2.5/TR = lead free /TR = Tape and Reel Pack quantity is 2,000 for TO-92 and 2,500 for SOT-89 and NSOIC.
CLICK HERE TO ORDER SAMPLES
Corporation
ANALOG EXCELLENCE
Headquarters and Sales Office 233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600
Date: 11/29/04
SPX1004 1.2V/2.5V Micropower Voltage Reference
(c) Copyright 2004 Sipex Corporation
8

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