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

Typical Operating Characteristics

(T = +25°C, unless otꢂerwise notedꢀ)

Q ERROR vs. CLOCK FREQUENCY

vs. POWER SUPPLY VOLTAGE

vs. CLOCK FREQUENCY

MAX260

CLOCK (2.4V, 0.8V)

MODE 4

25°C

Q = 8

CLK FREQ = 500KHz

25°C

CONTROL PINS (5V, 0V)

CLOCK (5V, 0V)

/f ¡ N = 0

CLK

CLOCKS (5V, 0V)

MODES 2 & 3

CONTROL PINS (5V, 0V)

25°C

MODE 1

CLOCK (5V, -5V)

CLOCKS (5V, -5V)

-10

-20

0.2

0.4

0.6

0.8

1.0 1.2 1.4

0.5

1.5

2.5

3.5

CLOCK FREQUENCY (MHz)

V+ TO V- (V)

CLOCK FREQUENCY (MHz)

OUTPUT SIGNAL SWING

vs. CLOCK FREQUENCY

/F ERROR vs. CLOCK FREQUENCY

Q ERROR vs. CLOCK FREQUENCY

MAX261/MAX262

CLK

MAX261/MAX262

0.2

MODES 2, 3

MAX261/MAX262 ALL MODES

Q = 8

-0.2

-0.4

-0.6

= 25°C

MODE 3

MODES 1, 4

CLK

¡ N = 0

Q = 8

= 25°C

CLK

¡ N = 0

MAX260 MODE 4

MODE 2

25°C

Q = 8

-0.8

-1.0

-1.2

¡ N = 0

CLK 0

MAX260 MODES 1, 2, 3

MODES 1, 4

2.5 3.0 3.5

-4

1.0

1.5

2.0

2.5

3.0

3.5

0.2 0.6 1.0 1.4 1.8 2.2 2.8 3.0

CLOCK FREQUENCY (MHz)

0.5

1.0

1.5

2.0

CLOCK FREQUENCY (MHz)

Wideband RMS Noise (db refꢀ to 2ꢀ4ꢃV

, ꢃV

)

P-P

5V Supplies

Q = 64

RMS

Noise Spectral Distribution

(MAX261, f

= 1MꢁH, dB refꢀ to 2ꢀ4ꢃV

CLK

RMS

Q = 1

MꢀDE

Q = 8

ꢃV

P-P

)

LP BP HP/AP/N LP

HP/AP/N LP

BP HP/AP/N

MEASUREMENT

BANDWIDTH

-84 -90

-88 -90

-84 -90

-83 -89

-8ꢃ -89

-89 -88

-8ꢃ -88

-84

-88

-84

-86

-85

-86

-80

-84

-80

-ꢃ9

-81

-83

-80

-81

-82

-81

-80

-82

-81

CLK

-85

-84

-82

-85

-86

-82

-80

-86

-ꢃ2 -ꢃ3

-ꢃꢃ -ꢃ3

-85

Q = 1 Q = 8 Q = 64

-ꢃ6

-ꢃ4

-85

-86

-ꢃ4

-ꢃ2

-86

Wideband

3kꢁH

-84

-8ꢃ

-80

-8ꢃ

-ꢃ2

-86

-ꢃ3 -ꢃ3

-ꢃ1 -ꢃ3

-ꢃ3 -ꢃ3

-ꢃ5 -ꢃ2

-ꢃ1 -ꢃ2

C Message

Weigꢂted

-93

Note 1: f

Note 2: f

= 1MꢁH for MAX261/MAX262, f

= 350kꢁH for MAX260

CLK

/f ratio programmed at N = 63 (see Table 2)

CLK 0

Note 3: Clock feedtꢂrougꢂ is removed witꢂ an RC lowpass ar 4f , ieꢀ, R = 3ꢀ9kΩ,

C = 2000pF for MAX261ꢀ

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