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| Datasheet File OCR Text: |
| NTE994M Integrated Circuit Voltage Controlled Oscillator Description: The NTE994M is a general purpose voltage controlled oscillator in an 8-Lead DIP type package which may be used to generate square and triangular waves, the frequency of which is a very linear function of a control voltage. The frequency is also a function of an external resistor and capacitor. The NTE994M is specified for operation over the 0C to +70C temperature range. Features: D Wide Supply Voltage Range: 10 to 24Volts D Very linear modulation characteristics D High temperature stability D Excellent supply voltage rejection D 10 to 1 frequency range with fixed capacitor D Frequency programmable by means of current, voltage, resistor or capacitor Applications: D FM Modulation D Signal Generation D Function generation D Frequency shift keying D Tone generation Absolute Maximum Ratings: Power Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26V Power Dissipation (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300mW Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0C to +70C Lead Temperature Setting (Soldering, 10 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300C Note 1. The maximum junction temperature of the NTE994M is 100C. For operating at elevated junction temperatures, devices must be derated based on a thermal resistance of 100C/W. Electrical Characteristics: (VCC = 12V, TA = +25C unless otherwise specified) Parameter Maximum Operating Frequency Input Voltage Range Pin 5 Average Temperature Coefficient of Operating Frequency Supply Voltage Rejection Input Impedance Pin 5 VCO Sensitivity FM Distortion Maximum Sweep Rate Sweep Range Output Impedance Square Wave Output Level Triangle Wave Output Level Square Wave Duty Cycle Square Wave Rise Time Square Wave Fall Time Triangle Wave Linearity +1V Segment @ 1/2VCC Pin 3 Pin 4 RL1 = 10k RL2 = 10k For Pin 5, from 8V to 10V, fO = 10kHZ 10 Deviation 10V to 20V Conditions RO = 2k, CO = 2.7pf 3/ Min - 4VCC Typ 1 - 200 0.1 1 6.6 0.2 1 10:1 50 50 5.4 2.4 50 20 50 0.5 Max - VCC - 2 - 7.2 1.5 - - - - - - 60 - - 1 Units MHZ - ppm/C %/V M kHZ/V % MHZ - Vp-p Vp-p % ns ns % - - 0.5 6.0 - 500 - - - 5.0 2.0 40 - - - Pin Connection Diagram GND N.C. Square Wave Output Triangle Wave Output 1 2 3 4 8 7 6 5 VCC Timing Capacitor Timing Resistor Modulator Input 8 5 .256 (6.52) Max 1 4 .393 (10.0) Max .300 (7.62) .150 (3.81) .100 (2.54) .070 (1.77) Min .300 (7.62) |
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