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参数资料
| 型号： | MAX038CWP+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 16/17页 |
| 文件大小： | 0K |
| 描述： | IC GEN WAVEFORM HI-FREQ 20-SOIC |
| 标准包装： | 36 |
| 频率： | 0.1Hz ~ 20MHz |
| 电源电压： | 4.75 V ~ 5.25 V |
| 电流 - 电源： | 45mA |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 20-SOIC（0.295"，7.50mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 20-SOIC W |
| 安装类型： | 表面贴装 |
Detailed Description
The MAX038 is a high-frequency function generator
that produces low-distortion sine, triangle, sawtooth, or
square (pulse) waveforms at frequencies from less than
1Hz to 20MHz or more, using a minimum of external
components. Frequency and duty cycle can be inde-
pendently controlled by programming the current, volt-
age, or resistance. The desired output waveform is
selected under logic control by setting the appropriate
code at the A0 and A1 inputs. A SYNC output and
phase detector are included to simplify designs requir-
ing tracking to an external signal source.
The MAX038 operates with ±5V ±5% power supplies.
The basic oscillator is a relaxation type that operates by
alternately charging and discharging a capacitor, CF,
with constant currents, simultaneously producing a tri-
angle wave and a square wave (Figure 1). The charg-
ing and discharging currents are controlled by the cur-
rent flowing into IIN, and are modulated by the voltages
applied to FADJ and DADJ. The current into IIN can be
varied from 2A to 750A, producing more than two
decades of frequency for any value of CF. Applying
±2.4V to FADJ changes the nominal frequency (with
VFADJ = 0V) by ±70%; this procedure can be used for
fine control.
Duty cycle (the percentage of time that the output wave-
form is positive) can be controlled from 10% to 90% by
applying ±2.3V to DADJ. This voltage changes the CF
charging and discharging current ratio while maintain-
ing nearly constant frequency.
High-Frequency Waveform Generator
MAX038
OSCILLATOR
CURRENT
GENERATOR
2.5V
VOLTAGE
REFERENCE
OSC B
OSC A
TRIANGLE
SINE
SHAPER
COMPARATOR
PHASE
DETECTOR
MUX
COSC
GND
5
6
CF
8
7
10
FADJ
DADJ
IIN
REF
1
17
20
2, 9, 11, 18
V+
V-
GND
RF
RD
RIN
+5V
-5V
-250
μA
SINE
TRIANGLE
SQUARE
A0
A1
OUT
SYNC
PDO
PDI
19
14
12
13
RL
CL
3
4
DGND
DV+
15
16
+5V
*
= SIGNAL DIRECTION, NOT POLARITY
= BYPASS CAPACITORS ARE 1
μF CERAMIC OR 1μF ELECTROLYTIC IN PARALLEL WITH 1nF CERAMIC.
*
Figure 1. Block Diagram and Basic Operating Circuit
MAX038
8
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX038CWP+ | 功能描述:时钟发生器及支持产品 RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| MAX038CWP+T | 功能描述:时钟发生器及支持产品 RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| MAX038CWP-T | 功能描述:时钟发生器及支持产品 RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| MAX038EPP | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:High-Frequency Waveform Generator |
| MAX038EVKIT | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Evaluation Kit for the MAX038 |
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