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. Sine, square, or triangle waveforms can be selected at the output by setting the appropriate code at two TTL-compatible select pins. The output signal for all waveforms is a 2VP-P signal that is symmetrical around ground. The low-impedance output can drive up to ±20mA. The TTL-compatible SYNC output from the internal oscillator maintains a 50% duty cycle—regardless of the duty cycle of the other waveforms—to synchronize other devices in the system. The internal oscillator can be synchronized to an external TTL clock connected to PDI.
The MAX038 is a high-frequency, precision function generator that produces accurate triangle, sawtooth, sine, square, and pulse waveforms with a minimum of external components. The output frequency can be controlled over a range of 0.1Hz to 20MHz using an internal 2.5V bandgap voltage reference and an external resistor and capacitor.
The device features independent frequency and duty-cycle adjustments, allowing for pulse-width modulation and the generation of sawtooth waveforms. Frequency modulation and sweeping are achieved in the same manner as duty cycle adjustment. The output signal is symmetrical around ground with a 2V P-P amplitude, and the low-impedance output can drive up to ±20mA.
| Operating Frequency Range | 0.1Hz to 20MHz |
|---|---|
| Waveforms | Triangle, Sawtooth, Sine, Square, and Pulse |
| Output Amplitude (P-P) | 2V P-P |
| Output Resistance | 0.1 Ω |
| Maximum Operating Frequency | 20.0 MHz |
| Total Harmonic Distortion (Sine) | 0.75% |
| Temperature Drift | 200ppm/°C |
The output frequency can be controlled over a frequency range of 0.1Hz to 20MHz.
It produces accurate triangle, sawtooth, sine, square, and pulse waveforms.
Yes, the duty cycle can be varied over a wide range by applying a ±2.3V control signal.