SPX1004 ® 1.2V / 2.5V Micropower Voltage Reference FEATURES ■ Initial Voltage Tolerance: SPX1004-1.2 = ±4mV SPX1004-2.5 = ±20mV ■ Low Dynamic Impedance 0.6 Ω Max. ■ Low Operating Current: SPX1004-1.2 = ±10µA SPX1004-2.5 = ±20µA ■ Wide Operating Current Range 10µA to 20mA ■ Direct Replacement for LT1004, LM1004 and AS1004 N/C 1 N/C 2 SPX1004 7 N/C N/C 3 8 Pin nSOIC 6 CATHODE 8 CATHODE ANODE 4 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 ±4mV 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 0°C to 70°C. BLOCK DIAGRAMS Cathode (K) Cathode (K) 500k + + - - 500k 1.250V 1.235V Anode (A) Anode (A) Figure 1a. SPX1004-1.2 Block Diagram Date: 5/25/04 Figure 1b. SPX1004-2.5 Block Diagram SPX1004 1.2V/2.5V Micropower Voltage Reference 1 © Copyright 2004 Sipex Corporation ABSOLUTE MAXIMUM RATINGS Continuous Power Dissipation (PD) TO-92.........................................................775mW SOIC-8.......................................................750mW SOT-89.....................................................1000mW 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. TYPICAL THERMAL RESISTANCES Forward Current (IAK).....................................................10mA Reverse Current (IKA).....................................................30mA Lead Temperature (soldering, 10 seconds).................300°C Storage Temperature Range.......................-65°C to +150°C Junction Temperature..................................................150°C PACKAGE 0JA 0JA 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 Electrical characteristics are guaranteed over full junction tepmerature range (0°C to 70°C). 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 IZ=100µA, TJ=25°C 1.231 1.235 1.239 2.480 2.500 2.520 V 0°C≤TA≤70°C 1.225 1.235 1.245 2.470 2.500 2.530 Ave Temp. Coeff. Imin≤IZ≤20mA 20 60 ppm/ °C Min Operating Current 4 10 12 20 µA Reverse Breakdown Imin≤IZ≤1mA 0.5 1 0.5 1 mV Votlage Change over temperature 0.5 1.5 0.5 1.5 with Current 1mA≤IZ≤20mA 6.5 10 6.5 10 over temperature 6.5 20 6.5 20 Reverse Dynamic IZ=100µA, f=25Hz 0.2 0.6 0.8 0.9 Ω Impedance over temperature 1 1.5 1.5 Wide Band Noise IZ=100µA, 10Hz≤f≤10kHz 60 120 µV Long Term Stability IZ=100µA, TA=25°C±0.1°C 20 60 ppm/ kHr Operating Temp Range 0 70 0 70 °C ppm 0 % 0 mV 0 VK -10 5000 TC in % /¡C = 0.5 0 15 ˘ VKA (mV) TC in mV/¡C = 30 45 60 75 90 Junction Temperature (¡C) ˘ TA ( TC in ppm/¡C = 105 ˘ VKA ˘ VKA at 25¡C ( ˘ TA ) ) ˘ VKA ˘VKA at 25¡C ˘ TA x 100 x 106 0.07 mV/¡C 0.003 %/¡C 27 ppm/¡C Figure 2. VREF vs Temperature for 2.5V Version Date: 5/25/04 SPX1004 1.2V/2.5V Micropower Voltage Reference 2 © Copyright 2004 Sipex Corporation TYPICAL PERFORMANCE CHARACTERISTICS 100 100 TA = 0˚C to 70˚C - Reverse Current (µA) IKA - Reverse Current (µA) TA = 0˚C to 70˚C 10 1 I KA 1 10 0.1 0.1 0.2 0 0.4 0.6 0.8 1.0 1.2 0 1.4 0.5 1.5 2.0 2.5 3.0 R R Figure 3. SPX1004-1.2V Reverse Operating Characteristic Figure 4. SPX1004-2.5 Reverse Operating Characteristic 10k 10k IKA = 100µA TA = 25°C ZKA- Reference Impedance (Ω) IKA = 100µA TA = 25°C ZKA- Reference Impedance (Ω) 1.0 V - Reverse Voltage (V) V - Reverse Voltage (V) 1k 100 10 1 0.1 0.01 0.1 1 10 100 1k 100 10 1 0.1 0.01 1k 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 100 1.2 ZKA = Reference Impedance (Ω) VF = Forward Voltage (V) TA = 25°C 0.8 0.4 0.0 0.01 0.1 1 10 TA = 25°C f = 25Hz 10 1 0.1 0.01 100 Figure 7. Forward Characteristics for SPX1004-1.2 and SPX1004-2.5 Date: 5/25/04 0.1 1 10 100 IKA = Reverse Current (mA) IF = Forward Current (mA) Figure 8. Low Frequency Reverse Dynamic Impedance for SPX1004-1.2 SPX1004 1.2V/2.5V Micropower Voltage Reference 3 © Copyright 2004 Sipex Corporation APPLICATION CIRCUITS VIN VIN VIN 100k 100kΩ 3kΩ 22Ω OUT OUT SPX1004-1.2V SPX1004-2.5V OUT SPX1004-2.5V 50µF Figure 9a. 1.2V Reference, Figure 9b. 2.5V Reference Figure 10. Low Noise Reference VIN VIN > 8V LM317 VIN LM338 OUT VOUT VIN Adj 0.1µF VOUT 5V OUT Adj 200Ω 976Ω, 1% + 10µF SPX1004-2.5V SPX1004-2.5V + 5k 22µF 324Ω, 1% 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 + 2 12V – 500k 6 8 – 4 22M 150pF 3.5M 150pF SPX1004-1.2 SPX1004-1.2 Figure 13. Low Battery Detector Date: 5/25/04 + LM4250 500k Figure 14. Micropower 10V Reference SPX1004 1.2V/2.5V Micropower Voltage Reference 4 © Copyright 2004 Sipex Corporation PACKAGE: PINOUTS SOIC (S1) SOIC (S2) Alternate Pin Out N/C 1 8 CATHODE N/C 1 8 CATHODE N/C 2 7 N/C N/C 2 7 N/C N/C 3 6 CATHODE N/C 3 6 CATHODE ANODE 4 5 ANODE ANODE 4 5 N/C 1 1 N/C ANODE Top View Top View 2 3 3 2 CATHODE Top View TO-92 (N) SOT-89 (M1) N/C ANODE CATHODE Bottom View ORDERING INFORMATION 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 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 /TR = Tape and Reel Pack quantity is 2,000 for TO-92, 2500 for NSOIC and SOT-89. Sipex Corporation Headquarters and Sales Office 233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600 Corporation ANALOG EXCELLENCE Date: 5/25/04 SPX1004 1.2V/2.5V Micropower Voltage Reference 5 © Copyright 2004 Sipex Corporation