® REF02 REF 02 REF 02 +5V Precision VOLTAGE REFERENCE FEATURES DESCRIPTION ● OUTPUT VOLTAGE: +5V ±0.1% max ● EXCELLENT TEMPERATURE STABILITY: 8.5ppm/°C max (–40°C to +85°C) ● LOW NOISE: 10µVp-p max (0.1Hz to 10Hz) ● EXCELLENT LINE REGULATION: 0.008%/V max ● EXCELLENT LOAD REGULATION: 0.005%/mA max ● LOW SUPPLY CURRENT: 1.4mA max ● SHORT-CIRCUIT PROTECTED ● WIDE SUPPLY RANGE: 8V to 40V ● EXTENDED INDUSTRIAL TEMPERATURE RANGE: –40°C to +85°C ● PACKAGE OPTIONS: Plastic DIP, SOIC The REF02 is a precision 5V voltage reference. The drift is laser trimmed to 8.5ppm/°C max over the extended industrial and military temperature range. The REF02 provides a stable 5V output that can be externally adjusted over a ±6% range with minimal effect on temperature stability. REF02 operates from a single supply with an input range of 8V to 40V with a very low current drain of 1mA, and excellent temperature stability due to an improved design. Excellent line and load regulation, low noise, low power, and low cost make the REF02 the best choice whenever a 5V voltage reference is required. All popular package options are available: plastic DIP, and SOIC. The REF02 is an ideal choice for portable instrumentation, temperature transducers, A/D and D/A converters, and digital voltmeter. APPLICATIONS 2 VIN ● PRECISION REGULATORS ● CONSTANT CURRENT SOURCE/SINK ● DIGITAL VOLTMETERS VOUT 6 Output REF02 3 ● V/F CONVERTERS ● A/D AND D/A CONVERTERS ● PRECISION CALIBRATION STANDARD Trim Temp GND 5 RPOT 10kΩ (Optional) 4 ● TEST EQUIPMENT +5V Reference with Trimmed Output International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111 Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 © 1993 Burr-Brown Corporation PDS-1177G Printed in U.S.A. December, 1993 SPECIFICATIONS ELECTRICAL At TA = +25°C and V IN = +15V power supply, unless otherwise noted. REF02A, R PARAMETER CONDITIONS OUTPUT VOLTAGE ILOAD = 0mA Change with Temperature(1, 2) (∆VOT) –40°C to +85°C RPOT = 10kΩ(6) CHANGE IN VO TEMP COEFFICIENT WITH OUTPUT ADJUSTMENT (–55°C to +125°C) RPOT = 10kΩ REF02C MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS 4.985 5.0 5.015 4.990 ✻ 5.010 4.995 ✻ 5.005 V 0.05 0.19 0.05 0.13 0.05 0.11 % 4 15 4 10 4 8.5 ±ppm/°C OUTPUT VOLTAGE DRIFT(3) –40°C to +85°C (TCVO) OUTPUT ADJUSTMENT RANGE REF02B, S ±3 ±6 ✻ ✻ ✻ ✻ 0.7 ✻ % ✻ ppm/% OUTPUT VOLTAGE NOISE 0.1Hz to 4 10 ✻ ✻ ✻ ✻ µVp-p LINE REGULATION(4) –40°C to +85°C VIN = 8V to 33V VIN = 8.5V to 33V 0.006 0.008 0.010 0.012 ✻ ✻ ✻ ✻ 0.004 0.005 0.008 0.010 %/V LOAD REGULATION(4) –40°C to +85°C IL = 0mA to +10mA IL = 0mA to +10mA 0.005 0.007 0.010 0.012 ✻ ✻ 0.008 0.010 0.003 0.004 0.005 0.005 %/mA To ±0.1% of Final Value 5 TURN-ON SETTLING TIME QUIESCENT CURRENT 10Hz(5) No Load LOAD CURRENT (SOURCE) LOAD CURRENT (SINK) 1.0 ✻ 1.4 µs ✻ ✻ ✻ ✻ mA 10 21 ✻ ✻ ✻ ✻ mA –0.3 –0.5 ✻ ✻ ✻ ✻ mA ✻ mA SHORT-CIRCUIT CURRENT VOUT = 0 30 POWER DISSIPATION No Load 15 TEMPERATURE VOLTAGE OUTPUT(7) 630 TEMPERATURE COEFFICIENT of Temperature Pin Voltage –55°C to +125°C 2.1 TEMPERATURE RANGE Specification REF02A, B, C ✻ –40 ✻ ✻ 21 ✻ ✻ ✻ ✻ ✻ mW mV mV/°C +85 ✻ ✻ ✻ ✻ °C NOTES: (1) ∆VOT is defined as the absolute difference between the maximum output and the minimum output voltage over the specified temperature range expressed as a percentage of 5V: ∆V = VMAX – VMIN x 100 (2) ∆VOT specification applies trimmed to +5.000V or untrimmed. (3) TCVO is defined as ∆VOT divided by O 5V the temperature range. (4) Line and load regulation specifications include the effect of self heating. (5) Sample tested. (6) 10kΩ potentiometer connected between VOUT and ground with wiper connected to Trim pin. See Figure on page 1. (7) Pin 3 is insensitive to capacitive loading. The temperature voltage will be modified by 7mV for each µA of loading. The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant any BURR-BROWN product for use in life support devices and/or systems. REF02 2 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATIONS Input Voltage ...................................................................................... +40V Operating Temperature G, P, U ........................................................................... –40°C to +85°C Storage Temperature Range G, P, U ........................................................................... –65°C to +125° M .................................................................................... –65°C to +150° Output Short Circuit Duration (to Ground or VIN) ....................... Indefinite Junction Temperature ....................................................... –65°C to +150° θJA P ......................................................................................... 120°C/W U ........................................................................................... 80°C/W Lead Temperature (soldering, 60s) ............................................... +300°C Top View DIP/SOIC NC 1 8 NC VIN 2 7 NC Temp 3 6 VOUT GND 4 5 Trim ELECTROSTATIC DISCHARGE SENSITIVITY This integrated circuit can be damaged by ESD. Burr-Brown recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. PACKAGE INFORMATION PRODUCT PACKAGE PACKAGE DRAWING NUMBER(1) REF02AU REF02BU REF02AP REF02BP SOIC SOIC Plastic DIP Plastic DIP 182 182 006 006 NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. ORDERING INFORMATION PRODUCT VOUT AT 25°C MAX DRIFT (ppm/°C) TEMPERATURE PACKAGE REF02AU REF02BU REF02AP REF02BP 5V±15mV 5V±10mV 5V±15mV 5V±10mV ±15 ±10 ±15 ±10 –40°C to +85°C –40°C to +85°C –40°C to +85°C –40°C to +85°C SOIC SOIC Plastic DIP Plastic DIP 3 REF02 TYPICAL PERFORMANCE CURVES AT TA = +25°C, unless otherwise noted. OUTPUT WIDEBAND NOISE vs BANDWIDTH (0.1Hz to frequency indicated) LINE REGULATION vs FREQUENCY 96 0.0003 VS = 15V TA = +25°C Line Regulation (dB) Output Noise (µVp-p) 86 100 10 1 0.003 66 0.01 56 0.031 46 0.1 36 0.31 26 1.0 16 3.1 6 10 100 1k 10k 100k 1M 10.0 10 100 Frequency (Hz) 30 Maximum Load Current (mA) 0.03 TA = 25°C VIN = 15V TA = 75°C 0.02 0.015 0.01 Device immersed in 75°C oil bath 0.005 10k 100k 1M MAXIMUM LOAD CURRENT vs INPUT VOLTAGE 35 0 Short Circuit Protection 25 500mW Maximum Dissapation 20 15 10 TA = +25°C 5 0 –10 0 10 20 30 40 50 60 5 10 Time (s) LINE REGULATION vs SUPPLY VOLTAGE 20 25 LINE REGULATION vs SUPPLY VOLTAGE 6 0.03 5 0.025 4 3 125°C 2 85°C 1 15 Input Voltage (V) Line Regulation (%/V) Percent Change in Output Voltage (%) OUTPUT CHANGE DUE TO THERMAL SHOCK 0.025 1k Frequency (Hz) 0.035 Line Regulation (%/V) 0.001 76 TA = 25°C 0.02 0.015 0.01 0.005 25°C –55°C 0 0 6 6.5 7 7.5 8 8.5 9 9.5 10 5 Input Voltage (V) REF02 10 15 20 Input Voltage (V) 4 25 30 Line Regulation (%/V) 1k TYPICAL PERFORMANCE CURVES (CONT) At TA = +25°C, unless otherwise noted. NORMALIZED LOAD REGULATION (∆IL = 10mA) vs TEMPERATURE NORMALIZED LINE REGULATION vs TEMPERATURE 1.4 1.5 VIN = 15V Line Reg (T) / Line Reg (25°C) Load Reg (T) / Load Reg (25°C) 1.6 1.4 1.3 1.2 1.1 1.0 0.9 0.8 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.7 0.4 0.6 –60 –40 –20 0 20 40 60 80 –60 –40 –20 100 120 140 0 Temperature (°C) REF02 VOUT 20 40 60 80 Temperature (°C) 100 120 140 MAXIMUM LOAD CURRENT vs TEMPERATURE 30 5.002 Maximum Load Current (mA) 5.0015 5.001 5 4.9995 4.999 4.9985 20 VIN = 15V 15 10 5 4.998 0 4.9975 –60 –40 –20 0 20 40 60 80 –60 –40 100 120 140 –20 0 20 40 60 80 100 120 140 Temperature Temperature (°C) QUIESCENT CURRENT vs TEMPERATURE TYPICAL TEMPERATURE VOLTAGE OUTPUT vs TEMPERATURE (REF02M) 1.1 Temperature Voltage Output (mV) 830 1.08 Quiescent Current (mA) Volt 5.0005 25 1.06 VIN = 15V 1.04 1.02 1.0 780 730 680 630 VIN = 15V 580 530 480 430 0.98 –60 –40 –20 0 20 40 60 80 –60 –40 100 120 140 –20 0 20 40 60 Temperature (°C) Temperature (°C) 5 REF02 80 100 120 140 TYPICAL APPLICATIONS OUTPUT ADJUSTMENT The REF02 trim terminal can be used to adjust the voltage over a 5V ±150mV range. This feature allows the system designer to trim system errors by setting the reference to a voltage other than 5V, including 5.12V(1) for binary applications (see circuit on page one). 2 VIN Adjustment of the output does not significantly affect the temperature performance of the device. The temperature coefficient change is approximately 0.7ppm/°C for 100mV of output adjustment. 0.1µF VO 6 –5V REF02 10kΩ 3 Temp Trim 5 GND 4 10kΩ NOTE: (1) 20mV LSB for 8-bit applications. +15V +18V 2 5kΩ VIN –15V REF02 FIGURE 2. ±5V Precision Reference. GND 4 –18V FIGURE 1. Burn-In Circuit. REFERENCE STACKING PROVIDES OUTSTANDING LINE REGULATION By stacking two REF01s and one REF02, a systems designer can achieve 5V, 15V and 25V outputs. One very important advantage of this circuit is the near perfect line regulation at 5V and 15V outputs. This circuit can accept a 27V to 55V change to the input with less than the noise voltage as a change to the output voltage. (RB), a load bypass resistor, supplies current (ISY) for the 15V regulator. Any number of REF01s and REF02s can be stacked in this configuration. If ten devices can be stacked in this configuration, for example, ten 5V or five 10V outputs are achieved. The line voltage may range from 100V to 130V. Care should be exercised to insure that the total load currents do not exceed the maximum usable current which is typically 21mA. REF02 OPA177 6 –5V