SPX1004

® 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 N/C N/C 1 2 3 8 CATHODE SPX1004 8 Pin nSOIC 7 N/C 6 CATHODE 5 ANODE ANODE 4 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 + 1.235V 500k + 1.250V Anode (A) Anode (A) Figure 1a. SPX1004-1.2 Block Diagram Date: 5/25/04 Figure 1b. SPX1004-2.5 Block Diagram © 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).................300°C Storage Temperature Range.......................-65°C to +150°C Junction Temperature..................................................150°C TYPICAL THERMAL RESISTANCES PACKAGE TO-92 SOIC-8 SOT-89 0JA 160°C/W 175°C/W 110°C/W 0JA 80°C/W 45°C/W 8°C/W TYPICAL DERATING 6.3 mW/°C 5.7mW/°C 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 TC in mV/¡C = ˘ VKA (mV) ˘ TA -10 5000 0.5 TC in % /¡C = ( ˘ VKA ˘ VKA at 25¡C ˘ TA ) x 100 0 15 30 45 60 75 90 Junction Temperature (¡C) 105 TC in ppm/¡C = ( ˘ VKA ˘VKA at 25¡C ˘ TA ) 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 © Copyright 2004 Sipex Corporation 2 TYPICAL PERFORMANCE CHARACTERISTICS 100 TA = 0˚C to 70˚C 100 TA = 0˚C to 70˚C - Reverse Current (µA) I KA IKA - Reverse Current (µA) 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 = 100µA TA = 25°C ZKA- Reference Impedance (Ω) 10k IKA = 100µA TA = 25°C 1k ZKA- Reference Impedance (Ω) 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 = 25°C ZKA = Reference Impedance (Ω) 100 VF = Forward Voltage (V) TA = 25°C 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: 5/25/04 SPX1004 1.2V/2.5V Micropower Voltage Reference © Copyright 2004 Sipex Corporation 3 APPLICATION CIRCUITS VIN VIN VIN 3kΩ 100kΩ 100k 22Ω OUT SPX1004-1.2V OUT SPX1004-2.5V OUT SPX1004-2.5V 50µF Figure 9a. 1.2V Reference, Figure 9b. 2.5V Reference Figure 10. Low Noise Reference VIN LM317 VIN Adj 0.1µF 200Ω + 10µF VOUT OUT VIN > 8V LM338 VIN Adj 976Ω, 1% + 22µF 324Ω, 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: 5/25/04 SPX1004 1.2V/2.5V Micropower Voltage Reference © 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 ORDERING INFORMATION Ordering No. SPX1004M1-1.2 SPX1004M1-1.2/TR SPX1004S1-1.2 SPX1004S1-1.2/TR SPX1004S2-1.2 SPX1004S2-1.2/TR SPX1004N-1.2 SPX1004N-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 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 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 SOIC 8-Pin SOIC 8-Pin SOIC, alternate pinout 8-Pin SOIC, alternate pinout 3-Pin TO-92 3-Pin TO-92 3-Pin SOT-89 3-Pin SOT-89 8-Pin SOIC 8-Pin SOIC 8-Pin SOIC, alternate pinout 8-Pin SOIC, 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-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 © Copyright 2004 Sipex Corporation 5