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