Advanced Monolithic Systems AMS3100A-2.5 MICROPOWER VOLTAGE REFERENCE FEATURES APPLICATIONS • ±12 mV (±0.5%) max. initial tolerance (A grade) • Operating Current 20µ µ A to 20mA • Low Voltage Reference 2.50V • Max. 0.5Ω Ω Dynamic Impedance (A grade) • Low Temperature Coefficient • SOT-23 Package Available • ±5% Output Voltage Precission Trimming • Low cost • Battery Powered Systems • Instrumentation • A/D, D/A Converters • Temperature measurement • Current sources • Notebook/Personal Computer • Monitors/ VCR/ TV • Pagers GENERAL DESCRIPTION The AMS3100A-2.5 are two-terminal micropower band-gap voltage reference that feature a very low dynamic impedance and good temperature coefficient, operating over a 20µA to 20mA current range. AMS3100A-2.5 is trimmed at wafer test level to optimize the temperature coefficient and tight output voltage tolerance. The advanced process technology used, makes the AMS3100A-2.5 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, makes these reference diodes useful for micropower circuitry. These voltage references 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. A third terminal allows the reference voltage to be adjusted to ±5% to calibrate out system errors. The AMS3100A-2.5 is operating over a -40°C to 85°C temperature range and is available in the space saving SOT-23 package. ORDERING INFORMATION: TOL. PACKAGE TYPE SOT-23 ±12mV AMS3100A-2.5AM ±25mV AMS3100A-2.5BM ±25mV AMS3100A-2.5CM OPERATING TEMPERATURE RANGE -40°C to 85°C -40°C to 85°C -40°C to 85°C PIN CONNECTIONS 3L SOT-23 (M) 3 1 A - 2 + A = Adjust pin. Top View Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS3100-2.5 ABSOLUTE MAXIMUM RATINGS Reverse Current Forward Current Operating Temperature Range Storage temperature 30mA 10mA -40°C to 85°C -55°C to +150°C Lead Temperature Vapor phase (60 sec) Infrared (15 sec.) Thermal Resistance (θJA) 215°C 220°C 410°C/W ELECTRICAL CHARACTERISTICS Electrical Characteristics at IR = 100 µA, and TA = +25°C unless otherwise specified. Parameter Reverse Breakdown Voltage (Note 3) Reverse Dynamic Impedance (Note 3) Reverse Breakdown Voltage Change with current (Note 3) Conditions Min 2.488 2.500 2.512 IR - 100 µA, f =20Hz 0.2 0.60 10µA ≤IR ≤1mA 1mA ≤IR ≤20mA 1.0 10 12 IR - 100 µA, 10Hz ≤ f ≤ 10kHz Temperature Coeff. (Note 5) Long Term Stability (Note 4) Min AMS3100B-2.5 Typ Max 2.475 2.500 2.525 AMS3100C-2.5 Min Typ Max 2.450 2.500 2.550 Units V IR - 100 µA Min. Operating Current (Note 3) Wide Band Noise (Note 4) AMS3100A-2.5 Typ Max TA=25°C±.1°C T = 1000 Hr 1 1.0 10 20 25 Ω 1 13 20 30 13 120 120 120 25 50 100 20 20 20 2.0 20 mV 20 30 µA µA µV 150 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: Parameters identified with boldface type apply at temperature extremes. All other numbers apply at TA = TJ = 25°C. Note 3: Guaranteed and 100% production tested Note 4:. Guaranteed but not 100% production tested. These limits are not used to calculate average outgoing quality levels. Note 5: 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 -40°C, 25°C and 85°C. TYPICAL APPLICATIONS 2.5V Reference Wide Supply Range, Adjustable Reference +3.6V TO +40V VIN= 5V TO 35V V+ LM334 3.6k V- R 62Ω OUTPUT AMS1009 OUTPUT 10k* TRIM AMS1009 10k *Does not affect Temperature Coefficient Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 ppm/°C ppm AMS3100-2.5 TYPICAL PERFORMANCE CHARACTERISTICS Reverse Characteristics 8 TA =25° C 4 TA =-40° C 0 10 TA =85° C TA =-40° C 1 TA =25° C 0.1 1 10 REVERSE CURRENT (mA) Reverse Dynamic Impedance 0.5 1.0 1.5 2.0 2.5 REVERSE VOLTAGE (V) 0.01 TA =-40° C 1 TA =25° C 0.1 100 Reverse Dynamic Impedance 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) 10 1 10 100 10k 100k 1k FREQUENCY (Hz) IR= 100µA AMS3100A-2.5 40 SHARP CUTOFF FILTER OUTPUT VOLTAGE SWING (V) OUTPUT NOISE (nV/√Hz) 100µA 1000 800 600 400 200 0 1k 10k 100k CUTOFF FREQUENCY (Hz) Advanced Monolithic Systems, Inc. 1M Response Time 1200 60 0 100 100 3.0 SINGLE POLE LOW PASS 100 20 1k 0.1 1400 IR= 100µA TA =25° C IR= 100µA Noise Voltage Filtered Output Noise 80 IR= 100µA 2.520 120 0.1 1 10 100 FORWARD CURRENT (mA) 10k DYNAMIC IMPEDANCE ( Ω) REFERENCE VOLTAGE (V) TA =85° C 0.1 1 10 REVERSE CURRENT (mA) TA =25° C 0.4 Temperature Drift 100 0.01 0.8 3.0 2.530 10 TA =-40° C 0 0 100 1.2 TA =85° C 0.1 -4 1000 DYNAMIC IMPEDANCE ( Ω) 1.6 FORWARD VOLTAGE (V) TA =85° C 12 0.01 INTEGRATED NOISE (µV) Forward Characteristics 100 REVERSE CURRENT ( µA) OUTPUT VOLTAGE CHANGE (mV) Reverse Characteristics 16 2.0 INPUT 100k OUTPUT 1.0 0 ~ ~ ~ ~ 10 INPUT 0 10 100 1k 10k FREQUENCY (Hz) www.advanced-monolithic.com 100k 0 Phone (925) 443-0722 200 400 TIME (µs) 600 Fax (925) 443-0723 AMS3100-2.5 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted. 3 LEAD SOT-23 PLASTIC PACKAGE (M) 0.110-0.120 (2.794-3.048) 0.015-0.017 (0.381-0.432) 0.083-0.098 (2.108-2.489) 0.047-0.055 (1.194-1.397) 0.035-0.040 (0.889-1.016) 0.018-0.024 (0.457-0.610) 10° NOM 0.035-0.041 (0.089-1.041) 0.0034-0.0050 (0.086-0.127) 0.0005-0.0040 (0.013-0.102) 0.070-0.080 (1.778-2.032) 10° NOM 0.018-0.024 (0.457-0.610) (SOT-23 ) AMS DRW# 051991 Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723