General Description
●The MAX038 is a high-frequency, precision function generator producing accurate, high-frequency triangle, sawtooth, sine, square, and pulse waveforms with a minimum of external components. The output frequency can be controlled over a frequency range of 0.1Hz to 20MHz by an internal 2.5V bandgap voltage reference and an external resistor and capacitor. The duty cycle can be varied over a wide range by applying a ±2.3V control signal, facilitating pulse-width modulation and the generation of sawtooth waveforms. Frequency modulation and frequency sweeping are achieved in the same way. The duty cycle and frequency controls are independent.
●Features
●♦ 0.1Hz to 20MHz Operating Frequency Range
●♦ Triangle, Sawtooth, Sine, Square, and Pulse Waveforms
●♦ Independent Frequency and Duty-Cycle Adjustments
●♦ 350 to 1 Frequency Sweep Range
●♦ 15% to 85% Variable Duty Cycle
●♦ Low-Impedance Output Buffer: 0.1Ω
●♦ Low-Distortion Sine Wave: 0.75%
●♦ Low 200ppm/°C Temperature Drift
●Applications
● Precision Function Generators
● Voltage-Controlled Oscillators
● Frequency Modulators
● Pulse-Width Modulators
● Phase-Locked Loops
● Frequency Synthesizer
● FSK Generator—Sine and Square Waves
