Datasheet > LTC1064-4_09

LTC1064-4_09

更新时间： 2022-12-28 23:35:34

品牌	Logo	应用领域
凌特 - Linear		时钟
页数	文件大小	规格书
12页	136K
描述
Low Noise, 8th Order, Clock Sweepable Cauer Lowpass Filter

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LTC1064-4_09 数据手册

LTC1064-4

Low Noise, 8th Order, Clock

Sweepable Cauer Lowpass Filter

FEATURES

DESCRIPTIO

The LTC^®1064-4 is an 8th order, clock sweepable Cauer

■

8th Order Filter in a 14-Pin Package

■

80dB or More Stopband Attenuation at 2 × f_CUTOFF

50:1, f_CLKto f_CUTOFFRatio (Cauer)

100:1, f_CLKto f_–3dBRatio (Transitional)

135µV_RMSTotal Wideband Noise

0.03% THD or Better

lowpass switched capacitor filter. An external TTL or

CMOS clock programs the value of the filter’s cutoff

frequency. With Pin 10 at V⁺, the f_CLKto f_CUTOFFratio is

50:1; the filter has a Cauer response and with compensa-

tion the passband ripple is ±0.1dB. The stopband attenu-

ation is 80dB at 2 × f_CUTOFF. Cutoff frequencies up to

100kHz can be achieved. With Pin 10 at V^–, the f_CLKto

f_–3dBratiois100:1,thefilterhasatransitionalButterworth-

Cauer response with lower noise and lower delay

nonlinearity than the Cauer response. The stopband

attenuation at 2.5×f _–3dBis 92dB. Cutoff frequencies up to

50kHz can be achieved.

■

100kHz Maximum f_CUTOFFFrequency

Operates up to ±8V Power Supplies

Input Frequency Range up to 50 Times the Filter

Cutoff Frequency

APPLICATIO S

■

Antialiasing Filters

The LTC1064-4 features low noise and low harmonic

distortion even when input voltages up to 3V_RMSare

applied. The LTC1064-4 overall performance competes

with equivalent multiple op amp active realizations. The

LTC1064-4 is pin compatible with the LTC1064-1,

LTC1064-2 and LTC1064-3.

■

Telecom Filters

■

Sinewave Generators

, LTC and LT are registered trademarks of Linear Technology Corporation.

LTCMOS is a trademark of Linear Technology Corporation.

TheLTC1064-4ismanufacturedusingLinearTechnology’s

enhanced LTCMOS^TMsilicon gate process.

TYPICAL APPLICATIO

8th Order Clock Sweepable Lowpass Elliptic Filter

Frequency Response

= 25°C

= 5MHz, 50:1

CLK

= 30pF, C

R(h, I)

INV C

= 18pF

COMP1

COMP2

–20

COMP2*

–

–8V

AGND

LTC1064-4

0.1µF

CLOCK

CLK

–40

(TTL, ≤5MHz)

0.1µF

–

50/100

AGND

V /V

–60

–80

= 2MHz, 50:1

CLK

COMP1*

INV A

OUT

= 1MHz, 100:1

10k

CLK

–100

1064 TA01

100k

FREQUENCY (Hz)

*FOR FREQUENCIES ABOVE 20kHz AND MINIMUM PASSBAND RIPPLE REFER

TO THE PIN DESCRIPTION SECTION FOR COMPENSATION GUIDELINES.

NOTE:THE POWER SUPPLIES SHOULD BE BYPASSED BY A 0.1µF CAPACITOR

CLOSE TO THE PACKAGE. BYPASSING PIN 10 WITH 0.1µF CAPACITOR

REDUCES CLOCK FEEDTHROUGH. THE CONNECTION BETWEEN PINS 7

AND 14 SHOULD BE PHYSICALLY DONE UNDER THE PACKAGE.

1064-4 TA01b

10644fb

12 3 4 5 6 7...12

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型号	品牌	描述	获取价格	数据表
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LTC1064-4CN	Linear	Low Noise,8th Order, Clock Sweepable Cauer Lowpass Filter	获取价格
LTC1064-4CN#PBF	Linear	LTC1064-4 - Low Noise, 8th Order, Clock Sweepable Cauer Lowpass Filter; Package: PDIP; Pin	获取价格
LTC1064-4CS	Linear	Low Noise,8th Order, Clock Sweepable Cauer Lowpass Filter	获取价格
LTC1064-4CSW	Linear	Low Noise, 8th Order, Clock Sweepable Cauer Lowpass Filter	获取价格

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