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參數(shù)資料
| 型號： | MAX038 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | High-Frequency Waveform Generator |
| 中文描述： | 高頻波形發(fā)生器 |
| 文件頁數(shù)： | 8/16頁 |
| 文件大?。?/td> | 203K |
| 代理商： | MAX038 |
M
_______________Detailed Desc ription
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, C
F
,
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 2μA to 750μA, producing more than two
decades of frequency for any value of C
F
. Applying
±2.4V to FADJ changes the nominal frequency (with
V
FADJ
= 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 C
F
charging and discharging current ratio while maintaining
nearly constant frequency.
High-Frequenc y Waveform Generator
8
_______________________________________________________________________________________
MAX038
OSCILLATOR
OSCILLATOR
CURRENT
GENERATOR
2.5V
VOLTAGE
REFERENCE
OSC B
OSC A
TRIANGLE
SINE
SHAPER
COMPARATOR
COMPARATOR
PHASE
DETECTOR
MUX
COSC
GND
5
6
C
F
8
7
10
FADJ
DADJ
IIN
REF
1
17
20
2, 9, 11, 18
V+
V-
GND
R
F
R
D
R
IN
+5V
-5V
-250
μ
A
SINE
TRIANGLE
SQUARE
A0
A1
OUT
SYNC
PDO
PDI
19
14
12
13
R
L
C
L
3
4
DGND
DV+
16
15
+5V
*
=
SIGNAL DIRECTION, NOT POLARITY
= BYPASS CAPACITORS ARE 1
μ
F CERAMIC OR 1
μ
F ELECTROLYTIC IN PARALLEL WITH 1nF CERAMIC.
*
*
Figure 1. Block Diagram and Basic Operating Circuit
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| MAX038CPP | High-Frequency Waveform Generator |
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| MAX038EPP | ER 7C 5#16 2#12 PIN PLUG |
| MAX038EWP | Circular Connector; Series:; Body Material:Aluminum Alloy; Connecting Termination:Solder; Connector Shell Size:18; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:18-18; MIL SPEC:MIL-C-5015 RoHS Compliant: No |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX038C/D | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:High-Frequency Waveform Generator |
| MAX038CCP | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Evaluation Kit |
| MAX038CPP | 功能描述:IC GEN WAVEFORM HI-FREQ 20-DIP RoHS:否 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 可編程計(jì)時(shí)器和振蕩器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:45 系列:- 類型:溫度 - 補(bǔ)償晶體振蕩器（TCXO） 計(jì)數(shù):- 頻率:25MHz 電源電壓:3.135 V ~ 3.465 V 電流 - 電源:1.5mA 工作溫度:-40°C ~ 85°C 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 包裝:管件 供應(yīng)商設(shè)備封裝:16-SOIC W 安裝類型:表面貼裝 |
| MAX038CPP+ | 功能描述:IC GEN WAVEFORM HI-FREQ 20-DIP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 可編程計(jì)時(shí)器和振蕩器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:45 系列:- 類型:溫度 - 補(bǔ)償晶體振蕩器（TCXO） 計(jì)數(shù):- 頻率:25MHz 電源電壓:3.135 V ~ 3.465 V 電流 - 電源:1.5mA 工作溫度:-40°C ~ 85°C 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 包裝:管件 供應(yīng)商設(shè)備封裝:16-SOIC W 安裝類型:表面貼裝 |
| MAX038CWP | 功能描述:IC GEN WAVEFORM HI-FREQ 20-SOIC RoHS:否 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 可編程計(jì)時(shí)器和振蕩器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:45 系列:- 類型:溫度 - 補(bǔ)償晶體振蕩器（TCXO） 計(jì)數(shù):- 頻率:25MHz 電源電壓:3.135 V ~ 3.465 V 電流 - 電源:1.5mA 工作溫度:-40°C ~ 85°C 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 包裝:管件 供應(yīng)商設(shè)備封裝:16-SOIC W 安裝類型:表面貼裝 |
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