KA331-数据手册

1、KA331V-F ConverterFeatures Guaranteed linearity: 0.01% max. Low power dissipation: 15mW at 5V Wide range of full scale frequency: 1Hz to 100KHz Pulse output compatible with all logic forms Wide dynamic range: 100dB min at 10KHz full scale frequencyDescriptionThis voltage to freq

2、uency converter provides the output pulse train at a frequency precisely proportional to the applied input voltage. The KA331 can operate at power supplies as low as 4.0V and be changed output frequency from 1Hz to 100KHz. It is ideally suited for use in simple low-cost circuit for analog-to digital

3、 conversion, long term integration, linear frequency modulation or demodulation, frequency-to-voltage conversion, and many other functions.8-DIP1Internal Block DiagramRev. 1.0.02001 Fairchild Semiconductor CorporationKA331Absolute Maximum Ratings (TA = 25 C)ParameterSymbolValueUnitSupply VoltageVCC4

4、0VInput VoltageVI-0.2 + VCCVOperating Temperature RangeTOPR0 +70 CPower DissipationPD500mWElectrical CharacteristicsParameterSymbolConditionsMin.Typ.Max.UnitVFC Non-LinearityVFCNL4.5 VCC 20V- 0.003 0.01% Full-ScaleConversion Accuracy Scale FactorACCURVI = -10V, RS = 14K0.901.001.10KHz/VChang Of Gain

5、 With VCCVCC G/VCC4.5V VCC 10V-0.010.1%/V10V VCC 40V-0.0060.06Rated Full - Scale FrequencyfVI = -10V10.0-KHzINPUT COMPARATOROffset VoltageVIO0 C TA +70 C- 3 10mVBias CurrentIBIAS-80-300nAOffset CurrentIIO- 8 100nACommon-Mode RangeVCM0 C TA +70 C-0.2-VCC-2.0VTIMER (PIN 5)Timer Threshold VoltageVTH-0.

6、630.6670.701 VCCInput Bias CurrentIBIASVCC = 15V,- 10 100nA0V V5 9.9VV5 = 10V-2001000nASaturation VoltageVSATI = 5mA-0.220.5VCURRENT SOURCE (PIN 1)Output CurrentIORS = 14K , V1 = 0V116136156 AChange with Voltage IO/ V10V V1 10V-0.21.0 ACurrent Source Off LeakageILKG-0.0210.0nAREFERENCE VOLTAGE (PIN

7、2)Reference VoltageVREF-1.701.892.08VDCStability vs TemperatureSTT- 60-ppm/ CStability vs Time, 1000HoursSTT- 0.1-%LOGIC OUTPUT (Pin 3)Saturation VoltageVSATI = 5mA-0.150.50VI = 3.2mA-0.100.40Off LeakageILKG- 0.051.0 ASUPPLY CURRENTSupply CurrentICCVCC = 5V1.53.06.0mAVCC = 40V2.04.08.02KA331Typical

8、ApplicationsFigure 1. Precision Voltage-to-Frequency Converter, 100KHz Full-ScaleFigure 2. Simple Frequency-to-Voltage Converter, 10KHz Full-ScaleFigure 3. Light Intensity to Frequency Converter3KA331Mechanical DimensionsPackageDimensions in millimeters8-DIP6.40 0.20)0.790.252 0.0080.100040. 0.100.0

9、04(0310.#1#8460.0.0185241.0600.MAX200.0080.9.600.378209.0.362#4#52.540.1005.08MAX3.30 0.300.130 7.620.2000.0120.3003.40 0.200.33MIN0.134 0.0080.0130.25+0.100.050.010015+0.0040.0024KA331Ordering InformationProduct NumberPackageOperating TemperatureKA3318-DIP0 + 70 C5KA331DISCLAIMERFAIRCHILD SEMICONDU

10、CTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PAT

11、ENT RIGHTS, NOR THE RIGHTS OF OTHERS.LIFE SUPPORT POLICYFAIRCHILDS PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein:1. Life support devices or sys

12、tems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user.2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or 5/22/