Advanced Monolithic Systems AMS1004-1.2 MICROPOWER VOLTAGE REFERENCE FEATURES APPLICATIONS * 4 mV (0.3%) max. initial tolerance (A grade) * Operating Current 10 A to 20mA * Low Voltage Reference 1.235V * Max. 0.6 Dynamic Impedance (A grade) * Low Temperature Coefficient * 2.5V Device also available, AMS1004-2.5 * 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 10A 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 0C to 70C 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 Advanced Monolithic Systems, Inc. OPERATING SOT-89 AMS1004-1.2AL AMS1004-1.2BL TEMPERATURE RANGE 0 to 70 C 0 to 70 C 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS1004-1.2 ABSOLUTE MAXIMUM RATINGS Reverse Current Forward Current Operating Temperature Range 30mA 10mA 0C to 70C Storage temperature Soldering information TO-92 package: 10 sec. SOIC package: Vapor phase (60 sec) Infrared (15 sec.) SOT-89 package: 10 sec. -55C to +150C 260C 215C 220C 265C ELECTRICAL CHARACTERISTICS Electrical Characteristics at IR = 100 A, and TA = +25C unless otherwise specified. Parameter Reverse Breakdown Voltage (Note 4) Reverse Dynamic Impedance (Note 4) Reverse Breakdown Voltage Change with current (Note 4) Conditions Min 1.231 1.235 1.239 IR - 100 A, f = 20Hz 0.2 0.60 10A IR 1mA 1mA IR 20mA 1.0 10 8 IR - 100 A, 10Hz f 10kHz Temperature Coeff. (Note 6) Long Term Stability (Note 5) Min 1.220 AMS1004B-1.2 Typ Max 1.235 1.250 Units V IR - 100 A Min. Operating Current (Note 4) Wide Band Noise (Note 5) AMS1004A-1.2 Typ Max TA=25C.1C T = 1000 Hr 10 20 1 8 1.0 10 mV 10 20 A A 60 60 V 25 50 ppm/C 20 20 ppm 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 +100C Thermal Resistance JA (junction to ambient) TO-92 170C/W (0.125" leads) SO-8 SOT-89 165C/W 160C/W Note 3: Parameters identified with boldface type apply at temperature extremes. All other numbers apply at TA = TJ = 25C. 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 0C, 25C, 70C. Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS1004-1.2 PIN CONNECTIONS TO-92 Plastic Package (N) 3 2 SO-8 SO Package (S) N/C N/C N/C 7 6 5 + 8 1 1 2 3 N/C N/C N/C Bottom View SOT-89 (L) 4 - 3 2 1 N/C + - Top View Top View Micropower Reference from 9V Battery Reference from 1.5V Battery TYPICAL APPLICATIONS Wide Input Range Reference 9V VIN = 2.3V TO 30V 1.5V 500k 3k LM334 1.2V 1.2V 4.3k AMS1004-1.2 AMS1004-1.2 OUT 1.24V AMS1004-1.2 Micropower Thermocouple Cold Junction Compensator V+ 5.1k LM334 1M 1% R VMERCURY + CELL 1.345V ZERO ADJ 100k AMS1004-1.2 R2 2k 1% Adjustment Procedure TC ADJ 500 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. R1 Thermocouple Type + THERMOCOUPLE + METER COLD JUNCTION ISO THERMAL WITH LM334 Advanced Monolithic Systems, Inc. J T K S Seebeck Coefficient (mV/ C) R1 ( ) R2 Voltage Voltage ( ) Across R1 Across R2 @ 25C (mV) (mV) 52.3 42.8 40.8 6.4 523 432 412 63.4 1.24k 1k 953 150 15.60 12.77 12.17 1.908 14.32 11.78 11.17 1.766 Typical supply current 50A 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS1004-1.2 TYPICAL APPLICATIONS (Continued) 0C - 100C Thermometer 0C - 100C Thermometer Lower Power Thermometer * 150 150 M 1.3 TO 1.6V 0-100A M R1 4k IOUT R2 1k V+ LM334 LM334 R R1 2k IOUT AMS1004-1.2 R2 1k V+ 1.5V (1.3-1.6V) R LM334 AMS1004-1.2 V- M 0-50A 8k TO 12k V- R3 100 R3 50 * 2N3638 or 2N2907 select for inverse HFE 5 Select for operation at 1.3V IQ 600A to 900 A R4 220 1.3-1.6V AMS1004-1.2 R4 100 Calibration Calibration 1. Short AMS1004-1.2, adjust R3 for IOUT = temp at 1A/K 2. Remove short, adjust R2 for correct reading in C IQ at 1.3V 500 A IQ at 1.6V 2.4mA 1. Short AMS1004-1.2, adjust R3 for IOUT = temp at 1.8A/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 V1 R 2.3k V2 90k 25k 1M OUTPUT 1mV/ C 2 7 + 6 LM4250C 3 1.2k 27k 4 AMS1004-1.2 10V 8 22M 150pF R1 1k 3.5M 500k AMS1004-1.2 *IQ 20A standby current 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 = 50A to 150A Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS1004-1.2 TYPICAL PERFORMANCE CHARACTERISTICS Reverse Characteristics TA =125 C 6 4 TA =25 C 2 TA =-55 C 0 10 T A =125 C TA =-55 C 1 TA =25 C 0.1 -2 0.1 1 10 REVERSE CURRENT (mA) TA =25 C TA =-55 C Reverse Dynamic Impedance 1.250 1.240 1.230 1.220 10 100 10k 100k 1k FREQUENCY (Hz) 1M IR= 100 A 1.5 30 20 SHARP CUTOFF FILTER VOLTAGE SWING (V) NOISE (nV/Hz) 100A 40 0 100 1 2.0 600 SINGLE POLE LOW PASS OUTPUT 10 10 Response Time 700 IR= 100 A 50 100 Noise Voltage Filtered Output Noise 70 60 T A =25 C I R= 100 A 1k 0.1 -55 -35 -15 5 25 45 65 85 105 125 TEMPERATURE ( C) 100 0.1 1 10 100 FORWARD CURRENT (mA) 10k I R= 100 A 0.1 0.1 1 10 REVERSE CURRENT (mA) TA =125 C 0.01 DYNAMIC IMPEDANCE () REFERENCE VOLTAGE (V) TA =125 C 0.01 T A =25 C 0.4 0.2 0.4 0.6 0.8 1.0 1.2 1.4 REVERSE VOLTAGE (V) 1.260 1 0.8 Temperature Drift of 3 Representative Units 100 10 TA =-55 C 0 0 100 Reverse Dynamic Impedance DYNAMIC IMPEDANCE () 1.2 FORWARD VOLTAGE (V) 8 0.01 INTEGRATED NOISE (V) Forward Characteristics 100 REVERSE CURRENT (A) OUTPUT VOLTAGE CHANGE (mV) Reverse Characteristics 10 500 400 300 200 100k 0.5 0 OUTPUT ~ ~ ~ ~ 10 INPUT 100 0 1k 10k 100k CUTOFF FREQUENCY (Hz) Advanced Monolithic Systems, Inc. OUTPUT INPUT 1.0 0 10 100 1k 10k FREQUENCY (Hz) 100k 0 200 400 TIME (s) 600 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS1004-1.2 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted. 3 LEAD TO-92 PLASTIC PACKAGE (N) 0.1800.005 (4.5720.127) 0.0600.005 (1.5240.127) DIA 0.0600.010 (1.5240.254) 0.90 (2.286) NOM 0.1800.005 (4.5720.127) 0.1400.010 (3.5560.127) 5 NOM 0.500 (12.70) MIN 0.050 (1.270) MAX UNCONTROLLED LEAD DIMENSIONS 0.0150.002 (0.3810.051) 0.0160.003 (0.4060.076) 0.0500.005 (1.2700.127) 10 NOM 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 0.010-0.020 x 45 (0.254-0.508) 0.053-0.069 (1.346-1.752) 0.004-0.010 (0.101-0.254) 0.014-0.019 (0.355-0.483) 0.008-0.010 (0.203-0.254) 0.050 (1.270) TYP 0-8 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. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS1004-1.2 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted (Continued). SOT-89 PLASTIC PACKAGE (L) 0.173-0.181 (4.40-4.60) 0.055-0.063 (1.40-1.60) 0.014-0.017 (0.35-0.44) 0.064-0.072 (1.62-1.83) 0.155-0.167 (3.94-4.25) 0.084-0.090 (2.13-2.29) 0.090-0.102 (2.29-2.60) 0.035-0.047 (0.89-1.20) 0.059 (1.50) BSC 0.014-0.019 (0.36-0.48) 0.017-0.022 (0.44-0.56) L (SOT-89 ) AMS DRW# 042392 0.118 (3.00) BSC Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140