AMS1009 FEATURES APPLICATIONS • ±5 mV (±0.2%) Max. Initial Tolerance (A grade) • Wide Operating Current Range • Low Voltage Reference 2.5V • Max. 0.6Ω Dynamic Impedance (A grade) • Low Temperature Coefficient • Power Supplies • Instrumentation • 8 Bit A/D, D/A Reference • Current Loop Measurement and Control Systems • Reference for 5V Systems GENERAL DESCRIPTION The AMS1009 is a precision band-gap voltage reference diode. This voltage reference features a very low dynamic impedance and good temperature coefficient, operating over a wide current range of 400µA to 10mA. On-chip trimming is used to provide tight tolerance and minimize temperature drift. A third terminal allows the reference voltage to be adjusted to ±5% to calibrate out system errors. The AMS1009 is used as a precision 2.5V low voltage reference for digital voltmeters, power supplies or op amp circuitry, and the 2.5V make it easy to obtain a stable reference from 5V logic supplies. The AMS1009 is available in TO-92 and SO-8 packages operating over a 0°C to 70°C temperature range. ORDERING INFORMATION: TOL. PACKAGE TYPE TO-92 ±5mV AMS1009AN ±10mV AMS1009BN OPERATING 8 LEAD SOIC AMS1009AS AMS1009BS TEMPERATURE RANGE 0 to 70° C 0 to 70° C PIN CONNECTIONS TO-92 Plastic Package (N) 3 2 1 8L SOIC SO Package (S) N/C N/C ADJ 7 6 5 + 8 1 2 3 N/C N/C N/C Bottom View 4 - Top View 1 Advanced Monolithic Systems http://www.ams-semitech.com AMS1009 ABSOLUTE MAXIMUM RATINGS (Note 1) Reverse Current 20mA Forward Current 10mA Operating Temperature Range 0°C to 70°C Storage temperature -55°C to +150°C Soldering information (25 sec.) 265°C ELECTRICAL CHARACTERISTICS Electrical Characteristics at IR = 1 mA, and TA = +25°C unless otherwise specified. Parameter Conditions AMS1009A Typ Max Min Reverse Breakdown Voltage 2.495 Reverse Dynamic Impedance Min 2.500 2.505 0.2 AMS1009B Typ Max 2.490 Units 2.500 2.510 V 0.6 0.2 1.0 Ω 0.4 1.4 0.4 1.4 2.6 10 2.6 10 3 12 3 12 Reverse Breakdown Voltage Change with current 400µA ≤IR ≤10mA Temperature Stability TMIN ≤ TA ≤ TMAX 1.8 4 1.8 4 mV Average Temperature Coeff. 0°C ≤ TA ≤ 70°C 15 25 15 25 ppm/°C Long Term Stability (Note 4) TA=25°C±.1°C T = 1000 Hr 20 mV 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 +125°C Thermal Resistance ϕ JA (junction to ambient) TO-92 SO-8 170°C/W (0.125” leads) 165°C/W Note 3: Parameters identified with boldface type apply at temperature extremes. All other numbers apply at TA = TJ = 25°C. Note 4: 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 and 70°C. TYPICAL PERFORMANCE CHARACTERISTICS Reverse Characteristics Reverse Voltage Change TJ =25° C 10 -4 10 -5 0.5 TJ =70° C TJ = 0° C 1.8 2.2 1.0 1.4 REVERSE VOLTAGE (V) 2.6 3 2 1 0 ~ ~ ~ ~ OUTPUT 2.0 5k 1.0 INPUT OUTPUT 0 ~ ~ 10 ~ ~ ~ ~ 10 -3 2.5 4 INPUT 4 0 0 4 12 16 8 REVERSE CURRENT (mA) 20 2 Advanced Monolithic Systems http://www.ams-semitech.com ~ ~ 10 -2 Response Time 5 VOLTAGE SWING (V) REVERSE VOLTAGE CHANGE (mV) REVERSE CURRENT (µA) 10 -1 0 1 TIME (µs) 20 AMS1009 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 OUTPUT 10k* TRIM AMS1009 10k AMS1009 *Does not affect Temperature Coefficient Low Temperature Coefficient Power Regulator AMS1085 VIN IN OUT ADJ VOUT 1.2k 375 AMS1009 2k 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) 0.180±0.005 (4.572±0.127) 0.060±0.010 (1.524±0.254) 0.90 (2.286) NOM 0.140±0.010 (3.556±0.127) 5° NOM 0.500 (12.70) MIN 0.050±0.005 (1.270±0.127) 0.050 (1.270) MAX 10° NOM UNCONTROLLED LEAD DIMENSIONS 0.015±0.002 (0.381±0.051) 0.016±0.003 (0.406±0.076) 3 Advanced Monolithic Systems http://www.ams-semitech.com N (TO-92 ) AMS DRW# 042391 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted (Continued). AMS1009 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) *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 4 Advanced Monolithic Systems http://www.ams-semitech.com S (SO-8 ) AMS DRW# 042293