MC1403, B Low Voltage Reference - ON Semiconductor

1 Semiconductor Components Industries, LLC, 2005 March, 2005 Rev. 41 Publication Order Number: mc1403 /DMC1403, BLow Voltage ReferenceA precision band gap Voltage Reference designed for criticalinstrumentation and D/A converter applications. This unit is designedto work with D/A converters, up to 12 bits in accuracy, or as areference for power supply applications. Output Voltage : V 25 mV Input Voltage Range: V to 40 V Quiescent Current: 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 PackageTypical 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 AvailableMAXIMUM RATINGS (TA = 25 C, unless otherwise noted.)

2 RatingSymbolValueUnitInput VoltageVI40 VStorage TemperatureTstg 65 to 150 CJunction TemperatureTJ+175 COperating Ambient Temperature RangeMC1403 BMC1403TA 40 to +850 to + 70 C CMaximum ratings are those values beyond which device damage can ratings applied to the device are individual stress limit values (notnormal operating conditions) and are not valid simultaneously. If these limits areexceeded, device functional operation is not implied, damage may occur andreliability may be LOW VOLTAGEREFERENCEPDIP 8P1 SUFFIXCASE 626 SOIC 8D SUFFIXCASE 751 NCNCNCNC813 VoutGND42NC7 Vin658181 PIN detailed ordering and shipping information in the packagedimensions section on page 6 of this data INFORMATIONMC1403, 1.

3 A Reference for Monolithic D/A Converters* Caution: System stability may be affected if output capacitance*exceeds F. Using higher capacitance values is not *recommended and should be carefully k321+ kR3 IRefFull ScaleAdjust 500 Monolithic D/AConverter* F C1R2R1 ReferenceAmplifierProviding the Reference Currentfor ON Semiconductor Monolithic D/A ConvertersThe mc1403 makes an ideal Reference for many mono-lithic D/A converters, requiring a stable current Reference ofnominally mA. This can be easily obtained from theMC1403 with the addition of a series resistor, R1. A variableresistor, R2, is recommended to provide means for full scale adjust on the D/A resistor R3 improves temperature performance bymatching the impedance on both inputs of the D/A referenceamplifier.

4 The capacitor decouples any noise present on thereference line. It is essential if the D/A converter is locatedany appreciable distance from the single mc1403 Reference can provide the requiredcurrent input for up to five of the monolithic D/A VELECTRICAL CHARACTERISTICS (Vin = 15 V, TA = 25 C, unless otherwise noted.)CharacteristicSymbolMinTypMaxUnit Output (IO = 0 mA)Temperature Coefficient of Output Voltage * VO/ T 1040ppm/ CMC1403 Output Voltage Change* VOmV(Over specified temperature range)MC1403B0 to + 70 CMC1403B 40 to + 85 C Regulation (IO = 0 mA)ReglinemV(15 V VI 40 V)( V VI 15 V) RegulationRegload 10mV(0 mA < IO < 10 mA)Quiescent CurrentIQ (IO = 0 mA)*Guaranteed but not , 2.

5 mc1403 , B k10 k30 kThis device contains 15 active , , CHANGE IN Vout(mV) outV, CHANGE IN Vout(mV) out-10-12TA, TEMPERATURE ( C) , TEMPERATURE ( C) 3. Typical Change in Vout versus Vin(Normalized to Vin = 15 V @ TC = 25 C)Figure 4. Change in Output Voltageversus Load Current(Normalized to Vout @ Vin = 15 V, Iout = 0 mA)Vin, INPUT Voltage (V) , CHANGE IN Vout(mV) out25 C0 C75 CIout, OUTPUT CURRENT (mA) Vout, CHANGE IN OUTPUT Voltage (mV) C0 C25 CFigure 5. Quiescent Current versus Temperature(Vin = 15 V, Iout = 0 mA)I1, QUIESCENT CURRENT (mA)TA, TEMPERATURE ( C) 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)8570503010-10-30806040200-40-20857050 3010-10-30 Vin = VVin = 15 VIout = 2 mA806040200-40-208570503010-10-30IO = 0 mA= mA= mA= mAMC1403, 1/2 Digit Voltmeter Common AnodeDisplays, Flashing OverrangeAn example of a 3 1/2 digit voltmeter using theMC14433 is shown in the circuit diagram of Figure 8.

6 Thereference Voltage for the system uses an mc1403 Vreference IC. The full scale potentiometer can calibrate fora full scale of mV or V. When switching V to 200 mV operation, RI is also changed, as shown onthe using RC equal to 300 k , the clock frequency forthe system is about 66 kHz. The resulting conversion timeis approximately 250 the input is overrange, the display flashes on andoff. The flashing rate is one half the conversion rate. Thisis done by dividing the EOC pulse rate by 2 with 1/2MC14013B flip flop and blanking the display using theblanking input of the display uses an LED display with common anodedigit lines driven with an MC14543B decoder and anMC1413 LED driver.

7 The MC1413 contains 7 Darlingtontransistor drivers and resistors to drive the segments of thedisplay. The digit drive is provided by four MPS A12 Darlington transistors operating in an emitter followerconfiguration. The MC14543B, MC14013B and LEDdisplays are referenced to VEE via Pin 13 of the places the full power supply Voltage across the current for the display may be adjusted by the value ofthe segment resistors shown as 150 in Figure 8. 3 1/2 Digit VoltmeterCommonAnodeLEDD isplay* RI = 470 k for V Range RI = 27 k for 200 mV Range** Mylar F321+ FRC300 kVXRI *20 F+ FPlus Sign50 FMinus SignSegment Resistors150 (7)MPS-A12+ VMC14013B51 VDSRQQ+ VMPS-A12(4)7MC1403200 110 F **DS2DS3DS412813121194351012345953241615 1413111271514136111014161718158765413129 2223212411220210113bacdegfMC14543 BMC1413+ V+ VMC1403, INFORMATIOND evicePackageOperating Temperature RangeShipping mc1403 DSOIC 898 Units/RailMC1403 DGSOIC 8(Pb Free)98 Units/RailMC1403DR2 SOIC 82500 Tape/ReelMC1403DR2 GSOIC 8(Pb Free)TA = 0 to +70 C2500 Tape/ReelMC1403P1 PDIP 81000 Units/RailMC1403P1 GPDIP 8(Pb Free)

8 1000 Units/TubesMC1403 BDSOIC 898 Units/RailMC1403 BDGSOIC 8(Pb Free)98 Units/RailMC1403 BDR2 SOIC 8TA = 40 to +85 C2500 Tape/ReelMC1403BP1 PDIP 8 8A1000 Units/RailMC1403BP1 GPDIP 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 PackagingSpecifications Brochure, BRD8011 , DIMENSIONSPDIP 8P1 SUFFIXCASE 626 05 ISSUE LNOTES:1. DIMENSION L TO CENTER OF LEAD WHENFORMED PACKAGE CONTOUR OPTIONAL (ROUND ORSQUARE CORNERS).3. DIMENSIONING AND TOLERANCING PER , 2 A B T ( )BMTDIMMINMAXMIN BSCM---10 ---10 mc1403 , DIMENSIONSSOIC 8D SUFFIXCASE 751 07 ISSUE AESEATINGPLANE1458 NJX 45 KNOTES:1.

9 DIMENSIONING AND TOLERANCING PERANSI , CONTROLLING DIMENSION: DIMENSION A AND B DO NOT INCLUDEMOLD MAXIMUM MOLD PROTRUSION ( )PER DIMENSION D DOES NOT INCLUDE DAMBARPROTRUSION. ALLOWABLE DAMBARPROTRUSION SHALL BE ( ) TOTALIN EXCESS OF THE D DIMENSION ATMAXIMUM MATERIAL 751 01 THRU 751 06 ARE OBSOLETE. NEWSTANDARD IS 751 ( ) 8 0 8 X Y ( ) Z ( )ZSXSM mminches SCALE 6:1*For additional information on our Pb Free strategy and solderingdetails, please download the ON Semiconductor Soldering andMounting Techniques Reference Manual, FOOTPRINT*ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further noticeto any products herein.

10 SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liabilityarising 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. Alloperating parameters, including Typicals must be validated for each customer application by customer s technical experts. SCILLC does not convey any license under its patent rightsnor the rights of others.