描述 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.
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.

特性 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 200ppm/°C Temperature Drift

應(yīng)用 Application

? 頻率調(diào)制器
? 頻率合成器
? FSK發(fā)生器—正弦波與方波
? 鎖相環(huán)(PLL)
? 精密函數(shù)發(fā)生器
? 脈沖寬度調(diào)制器
? 壓控振蕩器

簡介

MAX038屬于集成電路（IC）的時鐘發(fā)生器PLL頻率合成器。由制造生產(chǎn)的MAX038時鐘發(fā)生器，PLL，頻率合成器時鐘發(fā)生器、PLL 和頻率合成器集成電路 (IC) 可為邏輯器件提供參考信號的穩(wěn)定定時脈沖，這些器件包括計算機(jī)、微控制器、數(shù)據(jù)通信系統(tǒng)和圖形/視頻發(fā)生器。這些集成電路可能包括緩沖器、驅(qū)動器、分頻器、倍頻器、多路復(fù)用器、合成器、扇出分配器和預(yù)分頻器。