LTC1164-8CN

更新时间： 2024-02-14 10:27:26

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
12页	283K
描述
Ultraselective, Low Power 8th Order Elliptic Bandpass Filter with Adjustable Gain

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技术参数
数据手册

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LTC1164-8CN 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	SOP, SOP16,.4
针数：	16	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.6	Is Samacsys：	N
有源滤波器类型：	SWITCHED CAPACITOR FILTER	中心频率或截止频率最大范围：	5 kHz
JESD-30 代码：	R-PDSO-G16	JESD-609代码：	e0
长度：	10.2995 mm	湿度敏感等级：	1
负电源电压最大值（Vsup）：	-8 V	负电源电压最小值（Vsup）：	-2.375 V
标称负供电电压 (Vsup)：	-5 V	功能数量：	1
端子数量：	16	最高工作温度：	70 °C
最低工作温度：		阶次：	8TH
封装主体材料：	PLASTIC/EPOXY	封装代码：	SOP
封装等效代码：	SOP16,.4	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	峰值回流温度（摄氏度）：	235
极和零点：	8 AND 0	电源：	+-2.375/+-8 V
认证状态：	Not Qualified	响应：	BANDPASS
座面最大高度：	2.642 mm	子类别：	Active Filters
最大供电电流 (Isup)：	12.5 mA	最大供电电压 (Vsup)：	8 V
最小供电电压 (Vsup)：	2.375 V	标称供电电压 (Vsup)：	5 V
表面贴装：	YES	技术：	CMOS
温度等级：	COMMERCIAL	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	20
传递特性：	ELLIPTIC	宽度：	7.5 mm
Base Number Matches：	1

LTC1164-8CN 数据手册

LTC1164-8

W U U

APPLICATIONS INFORMATION

Passband Gain and Dynamic Range

= ±5V

= 340k

R = 61.9k

The filter’s gain at f_CENTERis set with an external op amp

and resistors R_INand R_F(Figure 1). The filter’s center

frequency(f_CENTER)isequaltotheclockfrequencydivided

by 100. The output dynamic range of LTC1164-8 is opti-

mized for minimum noise and maximum voltage swing

when resistor R_Fis 61.9k. The value of resistor R_IN

depends on the filter’s gain and it is calculated by the

equation R_IN= 340k/Gain. Table 2 lists the values of R_IN

and R_Ffor some typical gains. Increasing the filter’s gain

with resistor R_INdoes not increase the noise generated by

the filter. Table 3 shows the noise generated by the filter

with its input grounded.

–3

–6

–9

–12

–15

–18

–0.50

1.00

–1.00

0.50

(±% f

CENTER

PERCENT DEVIATION FROM f

)

CENTER

LTC1164-8 • F03

Figure 3. Typical Passband Variations

Table 2. Passband Gain at Center Frequency, R_INand R_F

the filter, only a small amount of input noise will reach the

filter’s output. If the output noise of the LTC1164-8 is

neglected, the signal-to-noise ratio at the output of the

filter divided by the signal-to-noise ratio at the input of the

filter equals:

GAIN

(±1%) R (±1%) GAIN IN dB

R (±1%) R (±1%)

IN F

340k

61.9k

340k

61.9k

169k

68.1k

34k

107k

60.4k

34k

(S/N)_OUT/(S/N)_IN= 20 • Log √(BW)_IN/(BW)_f

16.9k

6.81k

3.4k

19.1k

10.7k

6.01k

3.4k

where,

100

200

500

1000

(BW)_IN= noise bandwidth at the input of the filter

(BW)_f= 0.01 • f_CENTER= noise equivalent filter bandwidth

1.69k

680Ω

340Ω

1.91k

1.07k

Example: A small 1kHz signal is sent through a cable that

also conducts random noise. The cable bandwidth is

3.4kHz. An LTC1164-8 is used to detect the 1kHz signal.

Thesignal-to-noiseratioattheoutputofthefilteris25.3dB

larger than the signal-to-noise ratio at the input of the filter

(20 • Log√(BW)_IN/(BW)_f= 20 • Log√3.4kHz/ 0.01 • 1kHz

1kHz = 25.3dB).

Table 3. LTC1164-8 Noise with Its Input Grounded

POWER SUPPLY

NOISE (µV

)

RMS

±5V

Single 5V

360 ±10%

270 ±10%

The passband of the LTC1164-8 is from 0.995 • f_CENTERto

1.005 • f_CENTER. At the passband’s end points the typical

filter gain is –3dB ±2dB relative to the gain at f_CENTER

Figure 3 shows typical passband gain variations versus

percent of frequency deviation from f_CENTER. Outside the

filter’s passband, signal attenuation increases to –50dB

for frequencies less than 0.96 • f_CENTERand greater than

The AC output swing with ±5V supplies is ±4V, with a

single 5V supply it is 1V to 4V, when AGND (Pins 3, 5) is

biased at 2.5V. Table 4 lists op amps that are recom-

mended for use with an LTC1164-8. The LTC1164-8 is

designed and specified for a dual ±5V or single 5V supply

operation. The filter’s passband gain linearity is optimum

atsingle5VsupplyandwithPins3, 5(AGND)biasedat2V.

Filter operation at ±7.5V supplies is not tested or speci-

fied. At V_S= 7.5V, the filter will operate with center

frequencies up to 7kHz. Please refer to the Passband

Variations vs Power Supply graph in the Typical Perfor-

mance Characteristics.

1.04 • f_CENTER

In applications where a signal is to be detected in the

presence of wideband noise, the ultraselectivity of the

LTC1164-8 can improve the output signal-to-noise ratio.

Whenwidebandnoise(whitenoise)appearsattheinputto

1...4 5 678 9 10...12

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与LTC1164-8CN相关器件

型号	品牌	描述	获取价格	数据表
LTC1164-8CS	Linear	IC SWITCHED CAPACITOR FILTER, ELLIPTIC, BANDPASS, PDSO14, PLASTIC, SO-14, Active Filter	获取价格
LTC1164-8CSW	Linear	Ultraselective, Low Power 8th Order Elliptic Bandpass Filter with Adjustable Gain	获取价格
LTC1164A	Linear	Low Power, Low Noise, Quad Universal Filter Building Block	获取价格
LTC1164AC	Linear	Low Power, Low Noise, Quad Universal Filter Building Block	获取价格
LTC1164ACJ	Linear	Low Power, Low Noise, Quad Universal Filter Building Block	获取价格
LTC1164ACN	Linear	Low Power, Low Noise, Quad Universal Filter Building Block	获取价格

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