MC1403BN

MC1403 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 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. http://www.hgsemi.com.cn 1 ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 6 of this data sheet. 2018 AUG MC1403 + 5.0 V 1 MC1403 2 2.5
V 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 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 Symbol Min Typ Max Unit Vout 2.475 2.5 2.525 V
VO/
T − 10 40 ppm/°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) mV *Guaranteed but not tested. http://www.hgsemi.com.cn 2 2018 AUG MC1403 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 1.73
k 2.37 k 1.483 k 1.0 k 5.61 k This device contains 15 active transistors. Figure 2. MC1403, B Schematic http://www.hgsemi.com.cn 3 2018 AUG ∆Vout , CHANGE IN OUTPUT VOLTAGE (mV) MC1403 ∆ 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) 1.20 ∆ Vout , CHANGE IN Vout (mV) I1, QUIESCENT CURRENT (mA) 1.25 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) ∆ Vout , CHANGE IN Vout (mV) 4.0 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://www.hgsemi.com.cn 4 2018 AUG MC1403 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 0.1
F +5.0 V 3 0.1
F 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 10 11 12 13 14 15 16 1 2 Q Q 51 k MC14013B 4 +5.0 V 8 Minus Sign f g e d c b a 200  MPS−A12 Plus Sign 110  Common Anode LED Display 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 50 F −5.0 V 0.1 F MPS−A12 (4) +5.0 V −5.0 V Figure 8. 3−1/2−Digit Voltmeter http://www.hgsemi.com.cn 5 2018 AUG MC1403 Important statement: Huaguan Semiconductor Co,Ltd. reserves the right to change the products and services provided without notice. Customers should obtain the latest relevant information before ordering, and verify the timeliness and accuracy of this information. Customers are responsible for complying with safety standards and taking safety measures when using our products for system design and machine manufacturing to avoid potential risks that may result in personal injury or property damage. Our products are not licensed for applications in life support, military, aerospace, etc., so we do not bear the consequences of the application of these products in these fields. Our documentation is only permitted to be copied without any tampering with the content, so we do not accept any responsibility or liability for the altered documents. http://www.hgsemi.com.cn 6 2018 AUG