Datasheet > MAX261

MAX261

更新时间： 2023-12-20 18:45:44

品牌	Logo	应用领域
亚德诺 - ADI		开关通用开关微处理器
页数	文件大小	规格书
26页	943K
描述
可由微处理器编程的通用开关电容滤波器

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数据手册

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MAX261 数据手册

Microprocessor Programmable

Universal Active Filters

100

110

120

130

140

150

160

170

180

190

200

210

220

230

240

250

260

270

280

290

300

310

AB$ = "FILTER A" : GOSUB 150 : REM GET DATA FOR SECTION A

ADD = 0 : GOSUB 220 : REM WRITE DATA TO THE PRINTER PORT

AB$ = "FILTER B" : GOSUB 150 : REM GET DATA FOR B

ADD = 32 : GOSUB 220 : REM WRITE DATA TO PRINTER PORT

GOTO 100

PRINT "MODE (1 to 4, see Table 5) "; AB$; : INPUT M

IF M<1 OR M>4 THEN GOTO 150

PRINT "CLOCK RATIO (0 to 63, N of Table 2) "; AB$; : INPUT F

IF F<0 OR F>63 THEN GOTO 170

PRINT "Q (0 to 127, N of Table 3) "; AB$; : INPUT Q

IF Q<0 OR Q>127 THEN GOTO 190 ELSE : PRINT

RETURN

LPRINT CHR$(ADD+M-1); : ADD = ADD+4

FOR I = 1 TO 3

X = (ADD + (F - 4*INT(F/4))) : LPRINT CHR$(X);

F=INT(F/4) : ADD = ADD + 4

NEXT I

FOR I = 1 TO 4

X=(ADD + (Q - 4*INT(Q/4))) : LPRINT CHR$(X);

Q=I(Q/4) :: ADD = ADD + 4

NEXT I

RETURN

16(15)

20(19)

15(14)

MAX260

MAX261*

MAX262*

DB-25 MALE PLUG

(BACK VIEW)

(20)14

CLK

OUT

GND

18(17)

17(16)

CLK IN

0.1µF

TTL

(SEE FIGURE 4)

+5V

-5V

*PIN NUMBERS IN ( ) ARE FOR MAX261/MAX262

Figure 2. Basic Program and Hardware Connections to Parallel Printer Port for “Quick Look” Using a PC

quency response and calculates tꢂe pole/Hero (f ) and

Step 1—Filter Design

Start witꢂ tꢂe program “PZ” to determine wꢂat type of

filter is neededꢀ Tꢂis ꢂelps determine tꢂe type

(Butterwortꢂ, Cꢂebysꢂev, etcꢀ) and tꢂe number of poles

for tꢂe optimum cꢂoiceꢀ Tꢂe program also plots tꢂe fre-

Q values for eacꢂ second-order sectionꢀ Eacꢂ

MAX260/MAX261/MAX262 contains two second-order

sections, and devices can be cascaded for ꢂigꢂer

order filtersꢀ

_______________________________________________________________________________________

1...5 6 789 10 11...26

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