function generator

we are using icl8038 to make a cheap function generator.

1. FUNCTION GENERATOR USING ICL8038.

2. INTRODUCTION. The ICL8038 waveform generator is a monolithic integrated circuit capable of producing high accuracy sine, square,triangular , sawtooth and pulse waveforms with a minimum of external components. The frequency (or repetition rate) can be selected externally from 0.001Hz to more than 300kHz using either resistors or capacitors, and frequency modulation and sweeping can be accomplished with an external voltage.

3. FEATURES. Low Frequency Drift with Temperature . Low Distortion High Linearity Wide Frequency Range Simultaneous Sine, Square, and Triangle Wave Outputs

4. PIN DIAGRAM.

5. PIN DESCRIPTION. Pin 1 & Pin 12: Sine wave adjusts Pin 2 Sine Wave Output Pin 3 Triangular Wave output Pin 4 & Pin 5 Duty cycle/Frequency adjust Pin9 : Square Wave Outpututput.
Pin 10 : Timing Capacitors Pin 7 : FM Bias:

6. CIRCUIT DIAGRAM.

7. WORKING. The ICL8038 is a function generator chip that can generate three basic signals such as Sine, Square and triangle waveforms. The IC has also provided room to adjust the important parameters of a waveform such as Frequency and duty cycle.

8. OUTPUT WAVEFORMS.

9. APPLICATIONS. The sine wave output has a relatively high output impedance (1kΩ Typ). Its high frequency stability makes the ICL8038 an ideal building block for a phase locked loop_x0000_ _x0000_

10. ADVANTAGES. Less number of external components. Low cost Easy to bound circuit Generates precise waveform