MC1403, B Low Voltage Reference A precision band−gap voltage reference designed for critical instrumentation and D/A converter applications. This unit is designed to work with D/A converters, up to 12 bits in accuracy, or as a reference for power supply applications. • Output Voltage: 2.5 V 25 mV • Input Voltage Range: 4.5 V to 40 V • Quiescent Current: 1.2 mA Typical • Output Current: 10 mA • Temperature Coefficient: 10 ppm/°C Typical • Guaranteed Temperature Drift Specification • Equivalent to AD580 • Standard 8−Pin DIP, and 8−Pin SOIC Package http://onsemi.com PRECISION LOW VOLTAGE REFERENCE PDIP−8 P1 SUFFIX CASE 626 8 1 Typical Applications • • • • • Voltage Reference for 8 to 12 Bit D/A Converters Low TC Zener Replacement High Stability Current Reference Voltmeter System Reference Pb−Free Package is Available SOIC−8 D SUFFIX CASE 751 8 1 PIN CONNECTIONS MAXIMUM RATINGS (TA = 25°C, unless otherwise noted.) Vin 1 8 NC Symbol Value Unit Vout 2 7 NC VI 40 V GND 3 6 NC Tstg −65 to 150 °C NC 4 5 NC Junction Temperature TJ +175 °C Operating Ambient Temperature Range MC1403B MC1403 TA −40 to +85 0 to + 70 °C °C Rating Input Voltage Storage Temperature Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. Semiconductor Components Industries, LLC, 2005 March, 2005 − Rev. 4 1 ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 6 of this data sheet. Publication Order Number: MC1403/D MC1403, B + 5.0 V 1 MC1403 2 2.5V Full Scale Adjust 500 1.0 k R1 3 R2 Reference Amplifier IRef *0.1 F C1 Monolithic D/A Converter 1.2 k R3 * Caution: System stability may be affected if output capacitance * exceeds 1.0 F. Using higher capacitance values is not * recommended and should be carefully considered. Figure 1. A Reference for Monolithic D/A Converters Providing the Reference Current for ON Semiconductor Monolithic D/A Converters The resistor R3 improves temperature performance by matching the impedance on both inputs of the D/A reference amplifier. The capacitor decouples any noise present on the reference line. It is essential if the D/A converter is located any appreciable distance from the reference. A single MC1403 reference can provide the required current input for up to five of the monolithic D/A converters. The MC1403 makes an ideal reference for many monolithic D/A converters, requiring a stable current reference of nominally 2.0 mA. This can be easily obtained from the MC1403 with the addition of a series resistor, R1. A variable resistor, R2, is recommended to provide means for full− scale adjust on the D/A converter. ELECTRICAL CHARACTERISTICS (Vin = 15 V, TA = 25°C, unless otherwise noted.) Characteristic Symbol Min Typ Max Unit Vout 2.475 2.5 2.525 V VO/T − 10 40 ppm/°C Output Voltage (IO = 0 mA) Temperature Coefficient of Output Voltage* MC1403 Output Voltage Change* (Over specified temperature range) MC1403B 0 to + 70°C MC1403B −40 to + 85°C VO mV − − − − 7.0 12.5 − − 1.2 0.6 4.5 3.0 Line Regulation (IO = 0 mA) (15 V VI 40 V) (4.5 V VI 15 V) Regline Load Regulation (0 mA < IO < 10 mA) Regload − − 10 mV IQ − 1.2 1.5 mA Quiescent Current (IO = 0 mA) *Guaranteed but not tested. http://onsemi.com 2 mV MC1403, B Vin 2.0 k 2.0 k 2.0 k 2.0 k 1.0 k 32 Vout 1.5 k C1 30 pF 10 k 1.73k 2.37 k 1.0 k 5.61 k This device contains 15 active transistors. Figure 2. MC1403, B Schematic http://onsemi.com 3 1.483 k ∆Vout , CHANGE IN OUTPUT VOLTAGE (mV) MC1403, B ∆ Vout , CHANGE IN Vout (mV) 2.0 1.0 25°C 0 −1.0 0°C −2.0 75°C −3.0 −4.0 −5.0 −6.0 0 10 20 30 Vin, INPUT VOLTAGE (V) 40 10 9.0 8.0 7.0 6.0 5.0 4.0 75°C 3.0 2.0 0°C 1.0 0 50 25°C 0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 Iout, OUTPUT CURRENT (mA) 8.0 9.0 10 Figure 4. Change in Output Voltage versus Load Current Figure 3. Typical Change in Vout versus Vin (Normalized to Vin = 15 V @ TC = 25°C) (Normalized to Vout @ Vin = 15 V, Iout = 0 mA) ∆ Vout , CHANGE IN Vout (mV) 1.20 1.15 1.10 1.05 1.00 0.95 0.90 Iout = 2 mA Vin = 15 V 0 −2.0 Vin = 5.0 V −4.0 −6.0 −8.0 −10 −12 0 −40 −30 −20 −10 0 10 20 30 40 50 TA, TEMPERATURE (°C) 60 70 −14 −40 −30 −20 −10 80 85 0 10 20 30 40 50 TA, TEMPERATURE (°C) 60 70 80 85 Figure 5. Quiescent Current versus Temperature Figure 6. Change in Vout versus Temperature (Vin = 15 V, Iout = 0 mA) (Normalized to Vout @ Vin = 15 V) 4.0 ∆ Vout , CHANGE IN Vout (mV) I1, QUIESCENT CURRENT (mA) 1.25 2.0 IO = 0 mA = 2.0 mA 0 −2.0 = 8.0 mA −4.0 = 5.0 mA −6.0 −8.0 −10 −12 −40 −30 −20 −10 0 10 20 30 40 50 60 70 80 85 TA, TEMPERATURE (°C) Figure 7. Change in Vout versus Temperature (Normalized to TA = 25°C, Vin = 15 V, Iout = 0 mA) http://onsemi.com 4 MC1403, B 3−1/2−Digit Voltmeter − Common Anode Displays, Flashing Overrange is done by dividing the EOC pulse rate by 2 with 1/2 MC14013B flip−flop and blanking the display using the blanking input of the MC14543B. The display uses an LED display with common anode digit lines driven with an MC14543B decoder and an MC1413 LED driver. The MC1413 contains 7 Darlington transistor drivers and resistors to drive the segments of the display. The digit drive is provided by four MPS−A12 Darlington transistors operating in an emitter−follower configuration. The MC14543B, MC14013B and LED displays are referenced to VEE via Pin 13 of the MC14433. This places the full power supply voltage across the display. The current for the display may be adjusted by the value of the segment resistors shown as 150 in Figure 8. An example of a 3−1/2−digit voltmeter using the MC14433 is shown in the circuit diagram of Figure 8. The reference voltage for the system uses an MC1403 2.5 V reference IC. The full scale potentiometer can calibrate for a full scale of 199.9 mV or 1.999 V. When switching from 2.0 V to 200 mV operation, RI is also changed, as shown on the diagram. When using RC equal to 300 k, the clock frequency for the system is about 66 kHz. The resulting conversion time is approximately 250 ms. When the input is overrange, the display flashes on and off. The flashing rate is one−half the conversion rate. This MC1403 20 k 2 −5.0 V 0.1F +5.0 V 3 0.1F 300 k RC 11 10 VX 2 MC14433 0.1 F ** 13 7 8 0.1 F 4 1 2 3 5 23 22 21 20 4 5 6 +5.0 V 0.1 F 12 24 3 1 RI * +5.0 V 0.1 F −5.0 V 16 9 6 8 7 6 5 4 3 2 1 10 11 12 13 14 15 7 −5.0 V 9 14 Segment Resistors 150 (7) MC1413 1 MC14543B +5.0 V −5.0 V −5.0 V 15 19 18 17 16 5.0 V DS1 DS2 −5.0 V 6 5 DS3 3 DS4 D C S R Q Q 1 2 51 k MC14013B 4 +5.0 V 8 9 D S Q 13 11 C Q 12 R 14 7 10 * RI = 470 k for 2.0 V Range RI = 27 k for 200 mV Range ** Mylar Capacitor 10 11 12 13 14 15 16 50 F −5.0 V +5.0 V −5.0 V Figure 8. 3−1/2−Digit Voltmeter http://onsemi.com 5 Minus Sign f g e d c b a 200 MPS−A12 Plus Sign 110 Common Anode LED Display 0.1 F MPS−A12 (4) MC1403, B ORDERING INFORMATION Device MC1403D Package Operating Temperature Range Shipping† SOIC−8 98 Units/Rail MC1403DG SOIC−8 (Pb−Free) 98 Units/Rail MC1403DR2 SOIC−8 MC1403DR2G MC1403P1 2500 Tape/Reel TA = 0° to +70°C SOIC−8 (Pb−Free) 2500 Tape/Reel PDIP−8 1000 Units/Rail PDIP−8 (Pb−Free) 1000 Units/Tubes SOIC−8 98 Units/Rail MC1403BDG SOIC−8 (Pb−Free) 98 Units/Rail MC1403BDR2 SOIC−8 MC1403P1G MC1403BD TA = − 40° to +85°C 2500 Tape/Reel MC1403BP1 PDIP−8−8 1000 Units/Rail MC1403BP1G PDIP−8−8 (Pb−Free) 1000 Units/Rail †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. http://onsemi.com 6 MC1403, B PACKAGE DIMENSIONS PDIP−8 P1 SUFFIX CASE 626−05 ISSUE L 8 NOTES: 1. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. 2. PACKAGE CONTOUR OPTIONAL (ROUND OR SQUARE CORNERS). 3. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 5 −B− 1 4 F −A− NOTE 2 L C J −T− N SEATING PLANE D H M K G 0.13 (0.005) M T A M B M http://onsemi.com 7 DIM A B C D F G H J K L M N MILLIMETERS MIN MAX 9.40 10.16 6.10 6.60 3.94 4.45 0.38 0.51 1.02 1.78 2.54 BSC 0.76 1.27 0.20 0.30 2.92 3.43 7.62 BSC −−− 10 0.76 1.01 INCHES MIN MAX 0.370 0.400 0.240 0.260 0.155 0.175 0.015 0.020 0.040 0.070 0.100 BSC 0.030 0.050 0.008 0.012 0.115 0.135 0.300 BSC −−− 10 0.030 0.040 MC1403, B PACKAGE DIMENSIONS SOIC−8 D SUFFIX CASE 751−07 ISSUE AE NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. 6. 751−01 THRU 751−06 ARE OBSOLETE. NEW STANDARD IS 751−07. −X− A 8 5 S B 1 0.25 (0.010) M Y M 4 K −Y− G C N DIM A B C D G H J K M N S X 45 SEATING PLANE −Z− 0.10 (0.004) H D 0.25 (0.010) M Z Y S X M J S MILLIMETERS MIN MAX 4.80 5.00 3.80 4.00 1.35 1.75 0.33 0.51 1.27 BSC 0.10 0.25 0.19 0.25 0.40 1.27 0 8 0.25 0.50 5.80 6.20 INCHES MIN MAX 0.189 0.197 0.150 0.157 0.053 0.069 0.013 0.020 0.050 BSC 0.004 0.010 0.007 0.010 0.016 0.050 0 8 0.010 0.020 0.228 0.244 SOLDERING FOOTPRINT* 1.52 0.060 7.0 0.275 4.0 0.155 0.6 0.024 1.270 0.050 SCALE 6:1 mm inches *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. 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