Datasheet > LTC1064_09

LTC1064_09

更新时间： 2022-12-28 23:35:34

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
20页	262K
描述
Low Noise, Fast, Quad Universal Filter Building Block

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LTC1064_09 数据手册

LTC1064

ODES OF OPERATIO

Mode 3

SECONDARY MODES

Mode 1b

Mode3isthesecondoftheprimarymodes. InMode3, the

ratio of the external clock frequency to the center fre-

quencyofeach2ndordersectioncanbeadjustedabove or

below 50:1 or 100:1. Side D of the LTC1064 can only be

connected in Mode 3. Figure 6 illustrates Mode 3, the

classical state variable configuration, providing highpass,

bandpass and lowpass 2nd order filter functions. Mode 3

is slower than Mode 1. Mode 3 can be used to make high

order all-pole bandpass, lowpass, highpass and notch

filters.

Mode1bisderivedfromMode1.InMode1b,Figure7,two

additional resistors R5 and R6 are added to alternate the

amount of voltage fed back from the lowpass output into

the input of the SA (or SB or SC) switched-capacitor

summer. This allows the filter’s clock-to-center frequency

ratio to be adjusted beyond 50:1 or 100:1. Mode 1b

maintains the speed advantages of Mode 1.

When the internal clock-to-center frequency ratio is set at

50:1, the design equations for Q and bandpass gain are

different from the 100:1 case. This was done to provide

speed without penalizing the noise performance.

–

∫

1064 F07

1/4 LTC1064

AGND

R5 + R6

CLK

; f = f Q =

;

√

100(50) R5 + R6

–

R5 + R6

–

CLK

(f→ 0) = H

f→ = –

; H

= –

;

ON1

OBP

ON2

OLP

(

)

∫

1064 F06

1/4 LTC1064

= –

; R5⏐⏐R6 ≤ 5k

1064 F07 Eq

AGND

Figure 7. Mode 1b: 2nd Order Filter Providing Notch,

Bandpass and Lowpass

R3 R2

CLK

MODE 3 (100:1):

MODE 3 (50:1):

; Q =

; H

= –

;

OHP

√

R2 R4

100

= –

; H

= –

OBP

OLP

Mode 2

1.005

√

CLK

; Q =

;

Mode 2 is a combination of Mode 1 and Mode 3, as shown

in Figure 8. With Mode 2, the clock-to-center frequency

ratio f_CLK/f_Ois always less than 50:1 or 100:1. The

advantage of Mode 2 is that it provides less sensitivity to

resistor tolerances than does Mode 3. As in Mode 1,

Mode 2 has a notch output which depends on the clock

frequency and the notch frequency is therefore less than

the center frequency f_O.

√

–

R3 16R4

= –

; H

= –

; H

= –

OHP

OBP

OLP

1 –

16R4

NOTE: THE 50:1 EQUATIONS FOR MODE 3 ARE DIFFERENT FROM THE EQUATIONS

FOR MODE 3 OPERATIONS OF THE LTC1059, LTC1060 AND LTC1061. START WITH

f , CALCULATE R2/R4, SET R4; FROM THE Q VALUE, CALCULATE R3:

R3 =

; THEN CALCULATE R1 TO SET

R2 THE DESIRED GAIN.

1.005

1064 F06 Eq

√

16R4

When the internal clock-to-center frequency ratio is set at

50:1, the design equations for Q and bandpass gain are

different from the 100:1 case.

Figure 6. Mode 3: 2nd Order Filter Providing Highpass,

Bandpass and Lowpass

1064fb

1...6 7 8910 11 12...20

中文翻译

下载PDF

与LTC1064_09相关器件

型号	品牌	描述	获取价格	数据表
LTC1064-1	Linear	Low Noise,8th Order Clock Sweepable Elliptic Lowpass Filter	获取价格
LTC1064-1	ADI	低噪声、8 阶、时钟可扫频椭圆低通滤波器	获取价格
LTC1064-1_09	Linear	Low Noise, 8th Order, Clock Sweepable Elliptic Lowpass Filter	获取价格
LTC1064-1ACN	Linear	Low Noise, 8th Order, Clock Sweepable Elliptic Lowpass Filter	获取价格
LTC1064-1ACN#PBF	Linear	LTC1064-1 - Low Noise, 8th Order, Clock Sweepable Elliptic Lowpass Filter; Package: PDIP;	获取价格
LTC1064-1C	Linear	Low Noise,8th Order Clock Sweepable Elliptic Lowpass Filter	获取价格

与LTC1064_09相关文章

深入解析CS8416引脚说明、参数、技术特点
2024-06-03

1
TPA3116D2功放芯片参数详解、引脚说明
2024-06-03

5
移位寄存器74HC165引脚说明、驱动程序示例解读
2024-06-03

5
深入解析AD9833：DDS频率合成器的卓越性能与广泛应用
2024-06-03

2

产品中心

服务支持

精选活动

关于我们

帮助中心

LTC1064_09

LTC1064_09 数据手册

与LTC1064_09相关器件

与LTC1064_09相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LTC1064_09

LTC1064_09 数据手册

与LTC1064_09相关器件

与LTC1064_09相关文章

您还可以找

您在本页遇到什么问题？