Advanced Monolithic Systems AMS4040 MICROPOWER SHUNT VOLTAGE REFERENCE FEATURES APPLICATIONS • Tight Output Voltage Tolerance • Low Output Noise • Operating Current 250µ µ A to 100mA • Low Dynamic Impedance • Low Temperature Coefficient • Available in the sub-miniature SOT-23 Package • 1.2V Device ( AMS4041) also available • Battery Powered Systems • Instrumentation • Energy Management • Automotive • Precision Audio Components • Product Testing • Data Acquisition Systems GENERAL DESCRIPTION The AMS4040 is a two-terminal micropower band-gap voltage reference diode featuring a very low dynamic impedance and good temperature coefficient, operating over a 250µA to 100mA current range. On-chip trimming is used to provide tight voltage tolerance. Since the AMS4040 band-gap reference uses only transistors and resistors, low noise and good long term stability result. The wide dynamic operating range allows its use with widely varying supplies with excellent regulation. The extremely low power drain of the AMS4040 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. The AMS4040 is operational in the full industrial temperature range of -40°C to +85°and is available in small space saving TO-92, SO-8, SOT-89 and SOT-23 packages. ORDERING INFORMATION: TOL. ±0.25% ±0.5% ±1.0% PACKAGE TYPE TO-92 AMS4040AN AMS4040BN AMS4040CN 8 LEAD SOIC AMS4040AS AMS4040BS AMS4040CS OPERATING SOT-89 AMS4040AL AMS4040BL AMS4040CL 3 LEAD SOT-23 AMS4040AM AMS4040BM AMS4040CM TEMP. RANGE -40 to +85° C -40 to +85° C -40 to +85° C PIN CONNECTIONS TO-92 Plastic Package (N) N/C 3 + 2 1 8L SOIC SO Package (S) SOT-89 (L) 3L SOT-23 (M) 3 * N/C 1 8 + N/C 2 7 N/C N/C 3 6 N/C - 4 5 N/C 1 2 3 1 + 2 - *This pin must be left floating or connected to pin 2 Bottom View Advanced Monolithic Systems, Inc. Top View Top View Top View 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS4040 ABSOLUTE MAXIMUM RATINGS (Note 1) Reverse Current Forward Current Storage temperature Lead Temperature TO-92 package (Soldering 10 sec.) SO-8 and SOT-23 packages: Vapor phase (60 sec) Infrared (15 sec.) SOT-89 package (Soldering 10 sec.) 100mA 10mA -65°C to +150°C Internal Power Dissipation (PD) TO-92 Package SO-8 Package SOT-89 Package SOT-23 Package Thermal Resistance (θJA) TO-92 Package SO-8 Package SOT-89 Package SOT-23 Package 265°C 215°C 220°C 265°C 0.78W 0.71W 0.91W 0.28W 160°C/W 175°C/W 110°C/W 410°C/W Note1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. ELECTRICAL CHARACTERISTICS Electrical Characteristics at IR =100 µA and TA = +25°C unless otherwise specified. Parameter Conditions Reverse Breakdown Voltage Deviation of Reverse Breakdown Voltage over Temperature Reverse Breakdown Voltage Change with Operating Current Change Min AMS4040A Typ Max 2.494 2.500 2.506 TA = Full Range 8.0 IRMIN ≤ IR ≤ 1mA 0.3 Min 2.488 AMS4040B Typ Max 2.500 2.512 17 8.0 0.8 0.3 1.0 1mA ≤ IR ≤ 15mA 2.5 6.0 Min 2.475 AMS4040C Typ Max 2.500 2.525 V 17 8.0 25 mV 0.8 0.3 0.8 mV 1.0 2.5 8.0 Units 6.0 1.0 2.5 8.0 6.0 mV 8.0 Reverse Breakdown Voltage Long Term Stability TA=25°C±.1°C T = 1000 Hr 120 120 120 ppm Wide Band Noise 10HZ ≤ f ≤ 10kHz 35 35 35 µVrms Reverse Dynamic Impedance IR = 1mA, f = 120Hz, IAC = 0.1IR Minimum Operating Current 0.25 0.5 0.25 0.5 0.25 0.5 Ω 80 2500 80 250 80 250 µA Parameters identified with boldface type apply at temperature extremes. All other numbers apply at TA = TJ = 25°C. TYPICAL APPLICATIONS Shunt Regulator VS RS IQ + IL IL VR AMS4040-2.5 Advanced Monolithic Systems, Inc. IQ 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS4040 TYPICAL APPLICATIONS Precision 1µ µ A to 1mA Current Sources AMS4040-2.5 12V AMS4040-2.5 R1 20k 2 - R1 20k 8 1/2 LMC6062 3 4 + IOUT* 2 - 8 1/2 LMC6062 3 4 + 1 R2 IOUT* -1.0V TO -12V 1 R2 1.0V TO 12V -15V IOUT=2.5V/R2 Precision ± 2.500V Reference +5V ±5% 904Ω, 1% +2.500V AMS4040-2.5 47kΩ, 0.1% 47kΩ, 0.1% +5V 0.1µF 1/2 LMC6062 -2.500V + 0.1µF -5V START-UP CHARACTERISTICS AMS4040-2.5 RS = 30 k VIN 1Hz rate VR AMS4040-2.5 VIN (V) RS 5 0 TJ = 25°C Test Circuit VR (V) 3 2 1 0 0 20 40 60 80 RESPONSE TIME (µs) Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS4040 TYPICAL PERFORMANCE CHARACTERISTICS Temperature Drift for Different Average Temperature Coefficient VR CHANGE (%) +0.2 +0.1 +12ppm/° C 0 -0.1 -0.2 -22ppm/° C -0.3 -51ppm/° C REVERSE CURRENT (µA) IR = 150 µ A +0.4 +0.3 Noise Voltage vs Frequency 10 120 -0.4 -0.5 -40 -20 0 20 40 60 80 100 TEMPERATURE ( ° C) T J =25° C 80 60 40 20 C L= 1 µF TANTALUM 1 IMPEDANCE (Ω) IMPEDANCE (Ω) C L= 0 10 1k 10k 100 FREQUENCY (Hz) 100k IR= I RMIN+100 µA T J =25° C, ∆IR= 0.1I R C L= 0 100 10 C L= 1 µF TANTALUM 1 XC L Advanced Monolithic Systems, Inc. 0.5 Ouput Impedance vs Frequency 1k 1k 10k 100k FREQUENCY (Hz) 1.0 1 0.5 1.0 1.5 2.0 2.5 REVERSE VOLTAGE (V) 0 100 0.1 100 2.0 0.1 0 IR= 100 mA T J =25° C, ∆IR= 0.1I R 10 T J =25° C 0.2 Ouput Impedance vs Frequency 1k I R = 200 µ A 5.0 100 NOISE (mV/√Hz) +0.5 Reverse Characteristics and Minimum Operating Current XC L 1M 0.1 100 1k 10k 100k FREQUENCY (Hz) 1M 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS4040 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted. 3 LEAD TO-92 PLASTIC PACKAGE (N) 0.180±0.005 (4.572±0.127) 0.060±0.005 (1.524±0.127) DIA 0.060±0.010 (1.524±0.254) 0.90 (2.286) NOM 0.180±0.005 (4.572±0.127) 0.140±0.010 (3.556±0.127) 5° NOM 0.500 (12.70) MIN 0.050 (1.270) MAX UNCONTROLLED LEAD DIMENSIONS 0.015±0.002 (0.381±0.051) 0.016±0.003 (0.406±0.076) 0.050±0.005 (1.270±0.127) 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 AMS4040 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 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. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140