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| Other Analog Circuits In Brief . . . Other analog circuits are provided for special applications with both bipolar and CMOS technologies. These circuits range from the industry standard analog timing circuits and multipliers to specialized CMOS smoke detectors. These products provide key functions in a wide range of applications, including data transmission, commercial smoke detectors, and various industrial controls. Timing Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Singles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Duals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Multipliers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Linear Four-Quadrant Multipliers . . . . . . . . . . . . . . Smoke Detectors (CMOS) . . . . . . . . . . . . . . . . . . . . . . Package Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4.10-2 4.10-2 4.10-2 4.10-2 4.10-2 4.10-3 4.10-4 Motorola Master Selection Guide 4.10-1 Analog and Interface Integrated Circuits Timing Circuits These highly stable timers are capable of producing accurate time delays or oscillation. In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor. For a stable operation as an oscillator, the free-running frequency and the duty cycle are both accurately controlled with two external resistors and one capacitor. The output structure can source or sink up to 200 mA or drive TTL circuits. Timing intervals from microseconds through hours can be obtained. Additional terminals are provided for triggering or resetting if desired. Multipliers Linear Four-Quadrant Multipliers Multipliers are designed for use where the output voltage is a linear product of two input voltages. Typical applications include: multiply, divide, square, root-mean-square, phase detector, frequency doubler, balanced modulator/demodulator, electronic gain control. Multiplier Transfer Characteristics 10 8.0 6.0 V O , OUTPUT VOLTAGE (V) 4.0 2.0 0 -2.0 -4.0 -6.0 -8.0 -10 -10 -8.0 -6.0 -4.0 -2.0 0 2.0 4.0 VX, INPUT VOLTAGE (V) 6.0 8.0 10 X Y k= 1 10 + KXY Singles MC1455P1, D TA = 0 to +70C, Case 626, 751 MC1455BP1, D TA = - 40 to +85C, Case 626, 751 VCC 8 6 5.0 k Threshold Control 5 Voltage 5.0 k 2 Trigger 5.0 k 1 Gnd 4 Reset Comp B Comp A R Flip Flop Q Inhibit/ S Reset 3 Output 7 Discharge MC1494P TA = 0 to +70C, Case 648 This device has all the necessary internal regulation and references. The single-ended output is referenced to ground. MC1495D, P TA = 0 to +70C, Case 751A, 646 Maximum versatility is assured by allowing the user to select the level shift method. Duals MC3456P TA = 0 to +70C, Case 646 NE556N, D TA = 0 to +70C, Case 646, 751A MC1495BP TA = -40 to +125C, Case 646 Linearity and offset are actually tested over temperature. This is an improved specification over previous versions. Analog and Interface Integrated Circuits 4.10-2 Motorola Master Selection Guide Smoke Detectors (CMOS) These smoke detector ICs require a minimum number of external components. When smoke is sensed, or a low battery voltage is detected, an alarm is sounded via an external piezoelectric transducer. All devices are designed to comply with UL specifications. Table 1. Smoke Detectors (CMOS) Recommended R dd Power Source Battery Line Battery Line Battery Line Battery Line Ionization-Type Smoke Detector Ionization-Type Smoke Detector with Interconnect (1) Low-supply detector. F i Function Ionization-Type Smoke Detector S k Dt t Ionization-Type Smoke Detector with Interconnect Photoelectric-Type Smoke Detector S k Dt t with Interconnect Unique Ui Feature High Input Impedance FET C Comparator t Low Battery Detector Piezoelectric Pi l i Horn Driver Complies with UL217 and UL268 Device Di Number MC14467-1 Suffix/ S ffi / Package P1/646 P/648 - - MC14578 MC14468 - Photo Amplifier (1) Photo Amplifier, T l Pattern Temporal P tt High Input Impedance FET Comparator, Temporal Pattern MC14470 MC145010 MC145011 MC145012 P/648, DW/751G P/646, DW/751G P/648 (1) MC145013 MC145017 MC145018 Battery Battery Motorola Master Selection Guide 4.10-3 Analog and Interface Integrated Circuits Other Analog Circuits Package Overview CASE 626 P1 SUFFIX CASE 646 N, P, P1 SUFFIX CASE 648 P SUFFIX CASE 751 D SUFFIX CASE 751A D SUFFIX CASE 751G DW SUFFIX Analog and Interface Integrated Circuits 4.10-4 Motorola Master Selection Guide |
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