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| SEMICONDUCTOR TECHNICAL DATA PROGRAMMABLE PRECISION REFERENCES The KIA431S/AS/BS integrated circuits are three-terminal programmable shunt regulator diodes. These monolithic IC voltage reference operate as a low temperature coefficient zener which is programmable from Vref to 20 volts with two external resistors. These devices exhibit a wide operating current range of 1.0 to 100mA with a typical dynamic impedance of 0.22 . The characteristics of these references make them excellent replacements for zener diodes in many applications such as digital voltmeters, power supplies, and op amp circuitry. The 2.5 volt reference makes it convenient to obtain a stable reference from 5.0 volt logic supplies, and since the KIA431S/AS/BS operates as a shunt regulator, it can be used as either a positive or negative voltage reference. KIA431S/AS/BS BIPOLAR LINEAR INTEGRATED CIRCUIT www..com E K B DIM A B G 2 3 C D E F G H I J K L I H J A F D MILLIMETERS _ 2.9 + 0.2 1.6+0.2/-0.1 _ 0.70 + 0.05 _ 0.4 + 0.1 2.8+0.2/-0.3 _ 1.9 + 0.2 0.95 _ 0.16 + 0.05 0.00-0.10 0.25+0.25/-0.15 0.60 0.55 G 1 C L J 1. CATHODE 2. REFERENCE 3.ANODE FEATURES Programmable Output Voltage to 20 Volts. ITEM KIA431S KIA431AS * KIA431BS Note) * : Under development Low Dynamic Output Impedance : 0.22 (Typ.). Sink Current Capability of 1.0 to 100mA. Equivalent Full-Range Temperature Coefficient of 50ppm/ Temperature Compensated for Operation Over Full Rated Operating Temperature Range. Low Output Noise Voltage. (Typ.). Vref Tolerance (%) 2.2 1.0 0.5 TSM Marking Type No. KIA431S KIA431AS KIA431BS Marking 3A 3B 3C 2005. 10. 26 Revision No : 1 1/5 KIA431S/AS/BS www..com MAXIMUM RATINGS (Ta=25 ) SYMBOL VKA IK Iref Tj Topr Tstg RATING 20 -100 150 -0.05 10 150 -40 85 -65 150 900 mW UNIT V mA mA CHARACTERISTIC Cathode To Anode Voltage Cathode Current Range, Continuous Reference Input Current Range, Continuous Operating Junction Temperature Operating Temperature Storage Temperature Total Power Dissipation (Note) 0.8m) PD Note) Package mounted on a ceramic board. (600m2 BLOCK DIAGRAM Reference (R) 2.5Vref + - Cathode (K) Reference (R) Anode(A) Cathode (K) Anode(A) ELECTRICAL CHARACTERISTICS (Ta=25 ) CHARACTERISTICS KIA431S Reference Input Voltage Reference Input Voltage Deviation Over Temperature Range Ratio of Change in Reference Input Voltage to Change in Cathode to Anode Voltage Ta=25 Ta=Topr KIA431AS KIA431BS Vref Figure 1 (Note 1) VKA=Vref , IK=10mA VKA= Vref/ VKA Figure 2 IK=10mA 10V VKA= 20V Reference Input Current Reference Input Current Deviation Over Temperature Range Minimum Cathode Current For Regulation Off-State Cathode Current Dynamic Impedance Iref Figure 2 10V Vref Vref Figure 1 VKA=Vref , IK=10mA SYMBOL TEST CIRCUIT TEST CONDITION MIN. 2.440 2.470 2.4825 IK=10mA, R1=10k , R2= IK=10mA, R1=10k , R2= VKA=Vref VKA=20V, Vref=0V VKA=Vref, IK=1.0 100mA, f 1.0kHz TYP. 2.495 2.495 2.495 7.0 -1.4 -1.0 1.8 0.8 0.5 2.6 0.22 MAX. 2.550 2.520 2.5075 30 -2.7 mV/V -2.0 4.0 6.5 2.5 1.0 1000 A UNIT V V V mV Iref Imin Ioff Zka Figure 2 Figure 1 Figure 3 Figure 1 (Note 2) A mA nA 2005. 10. 26 Revision No : 1 2/5 KIA431S/AS/BS www..com FIGURE 1-TEST CIRCUIT FOR V KA = V ref Input IK V KA FIGURE 3-TEST CIRCUIT FOR I off Input I off VKA Vref FIGURE 2-TEST CIRCUIT FOR V KA > V ref Input IK R1 I ref R1 V KA = Vref ( 1+ ) + I ref x R1 R2 VKA Example : Vref = 8.0mV and slope is positive, Vref at 25 =2.495V, Vref = 0.008 70 106 Ta=70 = 45.8 ppm/ (2.495) Note 2: The dynamic impedance Zka is defined as: |Zka| = VKA Ik R2 V ref When the device is programmed with two external Note 1: The deviation parameter Vref is defined as the differences between the maximum and minimum values obtained over the full operating ambient temperature range that applies. |Zka'| = |Zka| (1+ R1 R2 ) resistors, R1 and R2, (refer to Figure 2) the total dynamic impedance of the circuit is defined as: V ref Max. Vref = V ref (Max.) - V ref (Min.) Ta = T 2 - T 1 Vref Min. T1 T2 AMBIENT TEMPERATURE The average temperature coefficient of the Reference input voltage, Vref , is defined as: ( )= Vref Vref at 25 Ta Vref 106 ) 106 Vref ( ppm = Ta(Vref at 25 ) Vref can be positive or negative depending on whether Vref Min. or Vref Max. occurs at the lower ambient temperature. 2005. 10. 26 Revision No : 1 3/5 KIA431S/AS/BS www..com I K - V KA 150 CATHODE CURRENT I K (mA) 100 50 0 -50 -100 -2.0 -1.0 0 1.0 2.0 3.0 CATHODE CURRENT I K (A) VKA =V ref Ta=25 C I K - VKA 800 600 400 200 0 -200 -1.0 V KA =V ref Ta=25 C 0 1.0 2.0 3.0 CATHODE VOLTAGE V KA (V) CATHODE VOLTAGE V KA (V) V ref - V KA 0 CHANGE IN REFERENCE INPUT VOLTAGE Vref (mV) IK =10mA Ta=25 C Zka 100 DYNAMIC IMPEDANCE Zka () I K=1.0mA~100mA Ta=25 C -f -8.0 10 -16 1.0 -24 -32 0 5 10 15 20 CATHODE VOLTAGE V KA (V) 0.1 1.0k 10k 100k 1.0M 10M FREQUENCY f (Hz) G VO - f 60 OPEN LOOP VOLTAGE GAIN G VO (dB) 50 40 30 20 10 0 -10 1.0k 10k 100k 1.0M 10M 0 4.0 I K=10mA Ta=25 C PULSE RESPONSE 3.0 VOLTAGE SWING (V) 2.0 1.0 0 5.0 0 INPUT OUTPUT Ta=25 C 8.0 12 16 20 FREQUENCY f (Hz) TIME t (s) 2005. 10. 26 Revision No : 1 4/5 KIA431S/AS/BS www..com ALLOWABLE POWER DISSIPATION P D (mW) P D - Ta 1.0 0.8 0.6 0.4 0.2 0 0 20 40 60 80 100 120 140 160 THERMAL RESISTANCE J-C 139 J-A 357 C/W AMBIENT TEMPERATURE Ta ( C) 2005. 10. 26 Revision No : 1 5/5 |
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