MC1403

 Semiconductor Components Industries, LLC, 2005 March, 2005 − Rev. 4 1 Publication Order Number: MC1403/D 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 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 MAXIMUM RATINGS (TA = 25°C, unless otherwise noted.) Rating Symbol Value Unit Input Voltage VI 40 V Storage Temperature Tstg −65 to 150 °C Junction Temperature TJ +175 °C Operating Ambient Temperature Range MC1403B MC1403 TA −40 to +85 0 to +70 °C °C 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. PRECISION LOW VOLTAGE REFERENCE PDIP−8 P1 SUFFIX CASE 626 SOIC−8 D SUFFIX CASE 751 NC NC NC NC81 3 Vout GND 4 2 NC 7 Vin 6 5 8 1 8 1 PIN CONNECTIONS http://onsemi.com See detailed ordering and shipping information in the package dimensions section on page 6 of this data sheet. ORDERING INFORMATION MC1403, B http://onsemi.com 2 Figure 1. A Reference for Monolithic D/A Converters * 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. MC1403 1.0 k 3 21 + 5.0 V 1.2 k R3 IRef Full Scale Adjust 500 � Monolithic D/A Converter *0.1 �F C1 R2R1 Reference Amplifier Providing the Reference Current for ON Semiconductor Monolithic D/A Converters The MC1403 makes an ideal reference for many mono- lithic 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. 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. 2.5�V ELECTRICAL CHARACTERISTICS (Vin = 15 V, TA = 25°C, unless otherwise noted.) Characteristic Symbol Min Typ Max Unit Output Voltage Vout 2.475 2.5 2.525 V (IO = 0 mA) Temperature Coefficient of Output Voltage* �VO/�T − 10 40 ppm/°C MC1403 Output Voltage Change* �VO mV (Over specified temperature range) MC1403B 0 to +70°C MC1403B −40 to +85°C − − − − 7.0 12.5 Line Regulation (IO = 0 mA) Regline mV (15 V � VI � 40 V) (4.5 V � VI � 15 V) − − 1.2 0.6 4.5 3.0 Load Regulation Regload − − 10 mV (0 mA < IO < 10 mA) Quiescent Current IQ − 1.2 1.5 mA (IO = 0 mA) *Guaranteed but not tested. MC1403, B http://onsemi.com 3 Figure 2. MC1403, B Schematic 1.73�k 1.5 k Vout 32 1.483 k10 k Vin 2.0 k2.0 k 30 pF C1 2.37 k 1.0 k 5.61 k 2.0 k 1.0 k2.0 k This device contains 15 active transistors. MC1403, B http://onsemi.com 4 V , C H A N G E IN V ou t (m V ) ∆ ou t V , C H A N G E IN V ou t (m V ) ∆ ou t -10 -12 TA, TEMPERATURE (°C) 4.0 2.0 0 -2.0 -4.0 -6.0 -8.0 TA, TEMPERATURE (°C) -12 -10 -8.0 -6.0 -4.0 -2.0 0 -14 Figure 3. Typical Change in Vout versus Vin (Normalized to Vin = 15 V @ TC = 25°C) Figure 4. Change in Output Voltage versus Load Current (Normalized to Vout @ Vin = 15 V, Iout = 0 mA) Vin, INPUT VOLTAGE (V) 2.0 1.0 0 -1.0 -2.0 -3.0 -4.0 -5.0 -6.0 0 10 20 30 40 50 V , C H A N G E IN V ou t (m V ) ∆ ou t 25°C 0°C 75°C Iout, OUTPUT CURRENT (mA) ∆ V ou t, C H A N G E IN O U T P U T V O LT A G E ( m V ) 10 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0 0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10 75°C 0°C 25°C Figure 5. Quiescent Current versus Temperature (Vin = 15 V, Iout = 0 mA) I 1 , Q U IE S C E N T C U R R E N T (m A ) TA, TEMPERATURE (°C) 0 1.25 1.20 1.15 1.10 1.05 1.00 0.95 0.90 806040200-40 -20 Figure 6. Change in Vout versus Temperature (Normalized to Vout @ Vin = 15 V) Figure 7. Change in Vout versus Temperature (Normalized to TA = 25°C, Vin = 15 V, Iout = 0 mA) 8570503010-10-30 806040200-40 -20 8570503010-10-30 Vin = 5.0 V Vin = 15 V Iout = 2 mA 806040200-40 -20 8570503010-10-30 IO = 0 mA = 2.0 mA = 5.0 mA = 8.0 mA MC1403, B http://onsemi.com 5 3−1/2−Digit Voltmeter − Common Anode Displays, Flashing Overrange 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 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. Figure 8. 3−1/2−Digit Voltmeter Common Anode LED Display * RI = 470 k� for 2.0 V Range RI = 27 k� for 200 mV Range ** Mylar Capacitor 0.1��F 3 21 +5.0 V 0.1��F RC 300 k VX RI * 20 k -5.0 V 0.1 �F +5.0 V 0.1 �F 0.1 �F Plus Sign 50 �F Minus Sign Segment Resistors 150 � (7) MPS-A12 +5.0 VMC14013B 51 k MC14433 0.1 �F C Q Q R S D 14 DS1 6 7 10 -5.0 V -5.0 V C 8 6 161 19 5.0 V D S R Q Q +5.0 V MPS-A12 (4) 7 MC1403 200 � 110 � 0.1 �F ** DS2 DS3 DS4 1 2 8 13 1211 9 4 3 5 10 1 2 3 4 5 9 5 3 2 4 16 15 14 13 11 12 7 15 14 13 6 11 10 14 16171815 8 7 6 5 4 13 12 9 22 23 21 24 1 12 20 21011 3 b acdegf M C 14 54 3B M C 14 13 +5.0 V +5.0 V -5.0 V -5.0 V -5.0 V -5.0 V -5.0 V MC1403, B http://onsemi.com 6 ORDERING INFORMATION Device Package Operating Temperature Range Shipping† MC1403D SOIC−8 98 Units/Rail MC1403DG SOIC−8 (Pb−Free) 98 Units/Rail MC1403DR2 SOIC−8 2500 Tape/Reel MC1403DR2G SOIC−8 (Pb−Free) TA = 0° to +70°C 2500 Tape/Reel MC1403P1 PDIP−8 1000 Units/Rail MC1403P1G PDIP−8 (Pb−Free) 1000 Units/Tubes MC1403BD SOIC−8 98 Units/Rail MC1403BDG SOIC−8 (Pb−Free) 98 Units/Rail MC1403BDR2 SOIC−8 TA = −40° to +85°C 2500 Tape/Reel MC1403BP1 PDIP−8−8 A 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. MC1403, B http://onsemi.com 7 PACKAGE DIMENSIONS PDIP−8 P1 SUFFIX CASE 626−05 ISSUE L 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. 1 4 58 F NOTE 2 −A− −B− −T− SEATING PLANE H J G D K N C L M MAM0.13 (0.005) B MT DIM MIN MAX MIN MAX INCHESMILLIMETERS A 9.40 10.16 0.370 0.400 B 6.10 6.60 0.240 0.260 C 3.94 4.45 0.155 0.175 D 0.38 0.51 0.015 0.020 F 1.02 1.78 0.040 0.070 G 2.54 BSC 0.100 BSC H 0.76 1.27 0.030 0.050 J 0.20 0.30 0.008 0.012 K 2.92 3.43 0.115 0.135 L 7.62 BSC 0.300 BSC M --- 10 --- 10 N 0.76 1.01 0.030 0.040 � � MC1403, B http://onsemi.com 8 PACKAGE DIMENSIONS SOIC−8 D SUFFIX CASE 751−07 ISSUE AE SEATING PLANE 1 4 58 N J X 45 � K 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. A B S DH C 0.10 (0.004) DIM A MIN MAX MIN MAX INCHES 4.80 5.00 0.189 0.197 MILLIMETERS B 3.80 4.00 0.150 0.157 C 1.35 1.75 0.053 0.069 D 0.33 0.51 0.013 0.020 G 1.27 BSC 0.050 BSC H 0.10 0.25 0.004 0.010 J 0.19 0.25 0.007 0.010 K 0.40 1.27 0.016 0.050 M 0 8 0 8 N 0.25 0.50 0.010 0.020 S 5.80 6.20 0.228 0.244 −X− −Y− G MYM0.25 (0.010) −Z− YM0.25 (0.010) Z S X S M � � � � 1.52 0.060 7.0 0.275 0.6 0.024 1.270 0.050 4.0 0.155 � mm inches �SCALE 6:1 *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. SOLDERING FOOTPRINT* ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). 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