Advanced Monolithic Systems AMS1004-2.5 MICROPOWER VOLTAGE REFERENCE FEATURES APPLICATIONS * 20 mV (0.3%) max. initial tolerance (A grade) * Operating Current 20 A to 20mA * Low Voltage Reference 2.5V * Max. 0.6 Dynamic Impedance (A grade) * Low Temperature Coefficient * 1.2V Device also available, AMS1004-1.2 * Battery Powered Systems * Instrumentation * A/D, D/A Converters * Temperature measurement * Current sources * Notebook/Personal Computer * Monitors/ VCR/ TV * Pagers GENERAL DESCRIPTION The AMS1004-2.5 is a two-terminal micropower band-gap voltage reference diode. It features a very low dynamic impedance and good temperature coefficient, operating over a 20A to 20mA current range. On-chip trimming is used to provide tight voltage tolerance. Since the AMS1004-2.5 is a band-gap reference, uses only transistors and resistors, low noise and good long term stability result. Careful design of the AMS1004-2.5 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 AMS1004-2.5 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 AMS1004-2.5 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 20mV AMS1004-2.5AN 40mV AMS1004-2.5BN PACKAGE TYPE 8 LEAD SOIC AMS1004-2.5AS AMS1004-2.5BS Advanced Monolithic Systems, Inc. OPERATING SOT-89 AMS1004-2.5AL AMS1004-2.5BL TEMPERATURE RANGE 0 to 70 C 0 to 70 C 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS1004-2.5 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 2.480 2.500 2.520 IR - 100 A, f = 20Hz 0.2 0.60 10A IR 1mA 1mA IR 20mA 1.0 10 12 IR - 100 A, 10Hz f 10kHz Temperature Coeff. (Note 6) Long Term Stability (Note 5) Min 2.460 AMS1004B-2.5 Typ Max Units 2.500 2.540 V 0.2 0.60 1.0 10 mV 10 20 A A IR - 100 A Min. Operating Current (Note 4) Wide Band Noise (Note 5) AMS1004A-2.5 Typ Max TA=25C.1C T = 1000 Hr 10 20 12 120 120 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 AMS1004-2.5 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 - Top View 3 2 1 N/C + - Top View TYPICAL APPLICATIONS Wide Input Range Reference Micropower Reference from 9V Battery 9V VIN = 3.7V TO 30V 200k LM334 2.5V 3.3k AMS1004-2.5 OUT 2.5V AMS1004-2.5 Micropower Thermocouple Cold Junction Compensator V+ 18k LM334 1M 1% R VZERO ADJ 100k 3V + LITHIUM AMS1004-2.5 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 AMS1004-2.5 TYPICAL APPLICATIONS (Continued) 0C - 100C Thermometer 0C - 100C Thermometer 1k 150 0-100A M M 0-50A R1 8k IOUT R2 1k V+ R LM334 R2 1k V+ 3V R LM334 AMS1004-2.5 V- R1 4k IOUT AMS1004-2.5 V- R3 100 3V R3 50 R4 220 R4 100 Calibration Calibration 1. Short AMS1004-2.5, adjust R3 for IOUT = temp at 1A/K 2. Remove short, adjust R2 for correct reading in C 1. Short AMS1004-2.5, adjust R3 for IOUT = temp at 1.8A/K 2. Remove short, adjust R2 for correct reading in F Micropower* 5V Regulator Micropower* 10V Reference IQ V+ VIN = 15V 47k R LM334 IQ VIN 5.2V 500k 2 2N2905 V- 2.2k 3 6 LM4250C + 7 3 VO = 5V IL 100mA 6 LM4250C 2 7 + 8 1N457 4 150pF 1N457 10V 8 4 22M 150pF 1.5M 100k + 4.7F TANTALUM 500k AMS1004-2.5 10M 2k 100k AMS1004-2.5 *IQ 40A Advanced Monolithic Systems, Inc. *IQ 20A standby current 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS1004-2.5 TYPICAL PERFORMANCE CHARACTERISTICS Reverse Characteristics 8 TA =25 C 4 TA =-55 C 0 10 TA =125 C TA =-55 C 1 TA =25 C 1.2 TA =-55 C 0.8 T A =25 C 0.4 TA =125 C 0.1 -4 0.1 1 10 REVERSE CURRENT (mA) 0 0 100 Reverse Dynamic Impedance 0.5 1.0 1.5 2.0 2.5 REVERSE VOLTAGE (V) 0.01 3.0 Temperature Drift Reverse Dynamic Impedance TA =125 C TA =-55 C 10 1 TA =25 C 0.1 1 10 REVERSE CURRENT (mA) 2.510 2.500 2.490 2.480 2.470 2.460 2.450 -55 -35 -15 5 25 45 65 85 105 125 TEMPERATURE ( C) 0.1 0.01 100 1 10 100 40 SHARP CUTOFF FILTER OUTPUT VOLTAGE SWING (V) OUTPUT 1000 800 600 400 200 0 1k 10k 100k CUTOFF FREQUENCY (Hz) Advanced Monolithic Systems, Inc. 1M IR= 100 A NOISE (nV/Hz) 100A 10k 100k 1k FREQUENCY (Hz) Response Time 1200 60 0 100 10 3.0 SINGLE POLE LOW PASS 100 20 100 0.1 1400 IR= 100 A T A =25 C I R= 100 A 1k Noise Voltage Filtered Output Noise 120 80 I R= 100 A 2.520 DYNAMIC IMPEDANCE () REFERENCE VOLTAGE (V) 100 0.1 1 10 100 FORWARD CURRENT (mA) 10k 2.530 1000 DYNAMIC IMPEDANCE () 1.6 FORWARD VOLTAGE (V) TA =125 C 12 0.01 INTEGRATED NOISE (V) Forward Characteristics 100 REVERSE CURRENT (A) OUTPUT VOLTAGE CHANGE (mV) Reverse Characteristics 16 2.0 INPUT 100k OUTPUT 1.0 0 ~ ~ ~ ~ 10 INPUT 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 AMS1004-2.5 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 AMS1004-2.5 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