AMS1004-1.2

Advanced Monolithic Systems FEATURES • ±4 mV (±0.3%) max. initial tolerance (A grade) • Operating Current 10µA to 20mA • Low Voltage Reference 1.235V • Max. 0.6Ω Dynamic Impedance (A grade) • Low Temperature Coefficient • 2.5V Device also available, AMS1004-2.5 AMS1004-1.2 MICROPOWER VOLTAGE REFERENCE RoHS compliant APPLICATIONS • Battery Powered Systems • Instrumentation • A/D, D/A Converters • Temperature measurement • Current sources • Notebook/Personal Computer • Monitors/ VCR/ TV • Pagers GENERAL DESCRIPTION The AMS1004-1.2 is a two-terminal micropower band-gap voltage reference diode. It features a very low dynamic impedance and good temperature coefficient, operating over a 10µA to 20mA current range. On-chip trimming is used to provide tight voltage tolerance. Since the AMS1004-1.2 is a band-gap reference, uses only transistors and resistors, low noise and good long term stability result. Careful design of the AMS1004-1.2 has made the device exceptionally tolerant of capacitive loading, making it easy to use in almost any reference application. The wide dynamic operating range allows its use with widely varying supplies with excellent regulation. The extremely low power drain of the AMS1004-1.2 makes these reference diodes useful for micropower circuitry. This voltage reference can be used to make portable meters, regulators or general purpose analog circuitry with battery life approaching shelf life. Further more, the wide operating current allows it to replace older references with a tight tolerance part, making it attractive for use in systems where accuracy was previously obtained at the expense of power consumption and trimming. The AMS1004-1.2 is operational over a temperature range of 0°C to 70°C and is available in TO-92, SO-8 and SOT-89 packages. For extended temperature range contact factory. ORDERING INFORMATION: TOL. TO-92 ±4mV AMS1004-1.2AN ±15mV AMS1004-1.2BN PACKAGE TYPE 8 LEAD SOIC AMS1004-1.2AS AMS1004-1.2BS SOT-89 AMS1004-1.2AL AMS1004-1.2BL OPERATING TEMPERATURE RANGE 0 to 70° C 0 to 70° C Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS1004-1.2 ABSOLUTE MAXIMUM RATINGS Reverse Current Forward Current Operating Temperature Range 30mA 10mA 0°C to 70°C Storage temperature Soldering information (25 sec.) -55°C to +150°C 265°C ELECTRICAL CHARACTERISTICS Electrical Characteristics at IR = 100 µA, and TA = +25°C unless otherwise specified. Parameter Reverse Breakdown Voltage (Note 4) Reverse Dynamic Impedance (Note 4) Reverse Breakdown Voltage Change with current (Note 4) Min. Operating Current (Note 4) Wide Band Noise (Note 5) Temperature Coeff. (Note 6) Long Term Stability (Note 5) TA=25°C±.1°C T = 1000 Hr 20 20 ppm IR - 100 µA, 10Hz ≤ f ≤ 10kHz Conditions IR - 100 µA IR - 100 µA, f = 20Hz 10µA ≤IR ≤1mA 1mA ≤IR ≤20mA AMS1004A-1.2 Min Typ Max 1.231 1.235 0.2 1.0 10 8 10 20 1.239 0.60 Min 1.220 AMS1004B-1.2 Typ Max 1.235 1 1.0 10 8 10 20 1.250 Units V Ω mV µA µA µV 60 60 25 50 ppm/°C Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Note 2: For elevated temperature operation, Tj max is +100°C Thermal Resistance ϕ JA (junction to ambient) TO-92 170°C/W (0.125” leads) SO-8 165°C/W SOT-89 160°C/W Note 3: Parameters identified with boldface type apply at temperature extremes. All other numbers apply at TA = TJ = 25°C. Note 4: Guaranteed and 100% production tested. Note 5: Guaranteed but not 100% production tested. These limits are not used to calculate average outgoing quality levels. Note 6: The average temperature coefficient is defined as the maximum deviation of reference voltage at all measured temperatures between the operating TMAX and TMIN, divided by TMAX - TMIN. The measured temperatures are 0°C, 25°C, 70°C. Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS1004-1.2 PIN CONNECTIONS TO-92 Plastic Package (N) SO-8 SO Package (S) + 8 N/C N/C N/C 7 6 5 SOT-89 (L) 3 2 1 3 1 2 3 N/C N/C N/C 4 - 2 + 1 - N/C Bottom View Top View Top View TYPICAL APPLICATIONS Wide Input Range Reference Micropower Reference from 9V Battery Reference from 1.5V Battery VIN = 2.3V TO 30V 9V 1.5V 500k 3k 1.2V AMS1004-1.2 LM334 1.2V 4.3k AMS1004-1.2 OUT 1.24V AMS1004-1.2 Micropower Thermocouple Cold Junction Compensator V+ LM334 2k 1% 5.1k 1M 1% V- R Adjustment Procedure TC ADJ 500 MERCURY + CELL 1.345V AMS1004-1.2 ZERO ADJ 100k R2 1. Adjust TC ADJ pot until voltage across R1 equals Kelvin temperature multiplied by the thermocouple Seebeck coefficient. 2. Adjust ZERO ADJ pot until voltage across R2 equals the thermocouple Seebeck coefficient multiplied by 273.2. Thermocouple Type Seebeck Coefficient (mV/ °C) 52.3 42.8 40.8 6.4 R1 ( Ω) R2 Voltage Voltage (Ω) Across R1 Across R2 @ 25°C (mV) (mV) 1.24k 1k 953Ω 150Ω 15.60 12.77 12.17 1.908 14.32 11.78 11.17 1.766 R1 + THERMOCOUPLE + COLD JUNCTION ISO THERMAL WITH LM334 METER J T K S 523 432 412 63.4 Typical supply current 50µA Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS1004-1.2 TYPICAL APPLICATIONS (Continued) 0°C - 100°C Thermometer Lower Power Thermometer 0°C - 100°C Thermometer * 150 M 1.3 TO 1.6V‡ 150 0-100µA M IOUT R1 4k R2 1k R AMS1004-1.2 R3 100 R4 220 LM334 AMS1004-1.2 8k TO 12k† 0-50µA IOUT M R1 2k R2 1k R AMS1004-1.2 R3 50 R4 100 V+ LM334 V- 1.5V (1.3-1.6V)† V+ LM334 V- 1.3-1.6V * 2N3638 or 2N2907 select for inverse HFE ≅ 5 † Select for operation at 1.3V ‡ IQ ≅ 600µA to 900 µA Calibration 1. Short AMS1004-1.2, adjust R3 for IOUT = temp at 1µA/°K 2. Remove short, adjust R2 for correct reading in °C † IQ at 1.3V ≅ 500 µA IQ at 1.6V ≅ 2.4mA Calibration 1. Short AMS1004-1.2, adjust R3 for IOUT = temp at 1.8µA/°K 2. Remove short, adjust R2 for correct reading in °F Centigrade Thermometer Micropower* 10V Reference IQ VIN = 15V 2.2k V + LM334 V1.5V† R 2.3k V1 V2 90k 25k 1M 2 + 7 LM4250C 3 8 4 22M 150pF 3.5M 6 10V OUTPUT 1mV/° C 1.2k 27k AMS1004-1.2 R1 1k AMS1004-1.2 500k Calibration 1. Adjust R1 so that V1 = temp at 1mV/°K. 2. Adjust V2 to 273.2mV. † IQ for 1.3V to 1.6V battery voltage = 50µA to 150µA *IQ ≅ 20µA standby current Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS1004-1.2 TYPICAL PERFORMANCE CHARACTERISTICS Reverse Characteristics OUTPUT VOLTAGE CHANGE (mV) 10 8 6 4 2 0 -2 0.01 0.1 1 10 REVERSE CURRENT (mA) 100 TA =25° C TA =-55° C Reverse Characteristics 100 REVERSE CURRENT ( µ A) FORWARD VOLTAGE (V) 1.2 Forward Characteristics TA =125° C TA =-55° C 10 TA =125° C TA =-55° C 0.8 1 TA =25° C 0.4 TA =25° C TA =125° C 0.1 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 REVERSE VOLTAGE (V) Temperature Drift of 3 Representative Units 1.260 DYNAMIC IMPEDANCE ( Ω ) REFERENCE VOLTAGE (V) IR= 100µA 0 0.01 0.1 1 10 100 FORWARD CURRENT (mA) Reverse Dynamic Impedance 100 DYNAMIC IMPEDANCE ( Ω ) Reverse Dynamic Impedance 10k 1k 100 10 TA =25° C IR= 100µA 1.250 10 TA =125° C 1.240 1 TA =-55° C TA =25° C 1.230 1 0.1 1.220 -55 -35 -15 5 25 45 65 85 105 125 TEMPERATURE (° C) Noise Voltage 700 0.1 0.01 0.1 1 10 REVERSE CURRENT (mA) 100 10 100 10k 100k 1k FREQUENCY (Hz) 1M Filtered Output Noise 70 IR= 100µA Response Time 2.0 IR= 100µA INTEGRATED NOISE ( µ V) 60 50 40 30 20 10 0 100 100µA SINGLE POLE LOW PASS 600 VOLTAGE SWING (V) NOISE (nV/√Hz) 500 400 300 200 100 0 1.5 1.0 0.5 0 OUTPUT INPUT 100k OUTPUT OUTPUT ~ ~ INPUT ~ ~ 10 SHARP CUTOFF FILTER 0 10 100 1k 10k FREQUENCY (Hz) 100k 0 200 400 TIME ( µ s) 600 1k 10k CUTOFF FREQUENCY (Hz) 100k Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS1004-1.2 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted. 3 LEAD TO-92 PLASTIC PACKAGE (N) 0.060±0.005 (1.524±0.127) DIA 0.180±0.005 (4.572±0.127) 0.060±0.010 (1.524±0.254) 0.140±0.010 (3.556±0.127) 0.180±0.005 (4.572±0.127) 0.90 (2.286) NOM 5° NOM 0.500 (12.70) MIN 10° NOM 0.050 (1.270) MAX UNCONTROLLED LEAD DIMENSIONS 0.050±0.005 (1.270±0.127) 0.016±0.003 (0.406±0.076) 0.015±0.002 (0.381±0.051) N (TO-92 ) AMS DRW# 042391 8 LEAD SOIC PLASTIC PACKAGE (S) 0.189-0.197* (4.801-5.004) 8 7 6 5 0.228-0.244 (5.791-6.197) 0.150-0.157** (3.810-3.988) 1 2 3 4 0.053-0.069 (1.346-1.752) 0.004-0.010 (0.101-0.254) 0.008-0.010 (0.203-0.254) 0.010-0.020 x 45° (0.254-0.508) 0°-8° TYP 0.014-0.019 (0.355-0.483) 0.050 (1.270) TYP 0.016-0.050 (0.406-1.270) S (SO-8 ) AMS DRW# 042293 *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS1004-1.2 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted (Continued). SOT-89 PLASTIC PACKAGE (L) 0.173-0.181 (4.40-4.60) 0.064-0.072 (1.62-1.83) 0.055-0.063 (1.40-1.60) 0.014-0.017 (0.35-0.44) 0.155-0.167 (3.94-4.25) 0.090-0.102 (2.29-2.60) 0.084-0.090 (2.13-2.29) 0.035-0.047 (0.89-1.20) 0.059 (1.50) BSC 0.118 (3.00) BSC 0.014-0.019 (0.36-0.48) 0.017-0.022 (0.44-0.56) L (SOT-89 ) AMS DRW# 042392 Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723