LTC1062CSW

更新时间： 2024-01-31 06:33:47

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
16页	191K
描述
5th Order Lowpass Filter

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技术参数
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LTC1062CSW 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
零件包装代码：	SOIC	包装说明：	SOP,
针数：	16	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.33	有源滤波器类型：	SWITCHED CAPACITOR FILTER
JESD-30 代码：	R-PDSO-G16	JESD-609代码：	e3
长度：	10.3 mm	湿度敏感等级：	1
负电源电压最大值（Vsup）：	-9 V	负电源电压最小值（Vsup）：	-2.5 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：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	峰值回流温度（摄氏度）：	250
极和零点：	5 AND 0	认证状态：	Not Qualified
响应：	LOWPASS	座面最大高度：	2.642 mm
最大供电电压 (Vsup)：	9 V	最小供电电压 (Vsup)：	2.5 V
标称供电电压 (Vsup)：	5 V	表面贴装：	YES
技术：	CMOS	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn)	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：	NOT SPECIFIED	传递特性：	BUTTERWORTH
宽度：	7.5 mm	Base Number Matches：	1

LTC1062CSW 数据手册

LTC1062

W U U

APPLICATIO S I FOR ATIO

Filter Input Voltage Range

Typical Performance Characteristics. The decrease of the

maximum attenuation is due to the rolloff at higher

frequencies of the loop gains of the various internal

feedback paths and not to the increase of the noise floor.

For instance, for a 100kHz clock and 1kHz cutoff fre-

quency, the maximum attenuation is about 64dB. A 4kHz,

1V_RMSinput signal will be predictably attenuated by 60dB

at the output. A 6kHz, 1V_RMSinput signal will be attenu-

ated by 64dB and not by 77dB as an ideal 5th order

maximum flat filter would have dictated. The LTC1062

output at 6kHz will be about 630µV_RMS. The measured

RMS noise from DC to 17kHz was 100µV_RMSwhich is

16dB below the filter output.

Every node of the LTC1062 typically swings within 1V of

eithervoltagesupply, positiveornegative. Withtheappro-

priate external (RC) values, the amplitude response of all

the internal or external nodes does not exceed a gain of

0dB with the exception of Pin 1. The amplitude response

of the feedback node (Pin 1) is shown in Figure 2. For an

inputfrequencyaround0.8•f_C,thegainis1.7V/Vand,with

±5V supplies, the peak-to-peak input voltage should not

exceed 4.7V. If the input voltage goes beyond this value,

clipping and distortion of the output waveform occur, but

the filter will not get damaged nor will it oscillate. Also, the

absolute maximum input voltage should not exceed the

power supplies.

C_OSC, Pin 5

The C_OSC, Pin 5, can be used with an external capacitor,

C_OSC, connected from Pin 5 to ground. If C_OSCis polarized

it should be connected from Pin 5 to the negative supply,

Pin 3. C_OSClowers the internal oscillator frequency. If

Pin 5 is floating, an internal 33pF capacitor plus the

external interpin capacitance set the oscillator frequency

around 140kHz with ±5V supply. An external C_OSCwill

bring the oscillator frequency down by the ratio (33pF)/

(33pF + C_OSC). The Typical Performance Characteristics

curves provide the necessary information to get the inter-

nal oscillator frequency for various power supply ranges.

Pin 5 can also be driven with an external CMOS clock to

override the internal oscillator. Although standard 7400

series CMOS gates do not guarantee CMOS levels with the

current source and sink requirements of Pin 5, they will, in

reality, drive the C_OSCpin. CMOS gates conforming to

standard B series output drive have the appropriate volt-

age levels and more than enough output current to

simultaneously drive several LTC1062 C_OSCpins. The

typical trip levels of the internal Schmitt trigger which

input is Pin 5, are given in Table 1.

= ±5V

1.62

2πRC

–2

–4

–6

–8

–10

–12

–14

0.1

1062 F02

Figure 2. Amplitude Response of Pin 1

Internal Buffer

The internal buffer out (Pin 8) and Pin 1 are part of the

signal AC path. Excessive capacitive loading will cause

gain errors in the passband, especially around the cutoff

frequency. The internal buffer gain at DC is typically

0.006dB. The internal buffer output can be used as a filter

output, however, it has a few millivolts of DC offset. The

temperature coefficient of the internal buffer is typically

1µV/°C.

Table 1

–

SUPPLY

±2.5V

±5V

0.9V

1.3V

–1V

–2.1V

–2.5V

–2.9V

Filter Attenuation

±6V

1.7V

The LTC1062 rolloff is typically 30dB/octave. When the

clock and the cutoff frequencies increase, the filter’s

maximum attenuation decreases. This is shown in the

±7V

1.75V

1062fd

1...3 4 567 8 9...16

中文翻译

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与LTC1062CSW相关器件

型号	品牌	获取价格	描述	数据表
LTC1062CSW#PBF	Linear	获取价格	LTC1062 - 5th Order Lowpass Filter; Package: SO; Pins: 16; Temperature Range: 0°C
LTC1062CSW#TR	Linear	获取价格	LTC1062 - 5th Order Lowpass Filter; Package: SO; Pins: 16; Temperature Range: 0°C
LTC1062CSW#TRPBF	Linear	获取价格	LTC1062 - 5th Order Lowpass Filter; Package: SO; Pins: 16; Temperature Range: 0°C
LTC1062M	Linear	获取价格	5th Order Lowpass Filter
LTC1062MJ8	Linear	获取价格	5th Order Lowpass Filter
LTC1062MJ8	MAXIM	获取价格	Switched Capacitor Filter, 1 Func, Butterworth, Lowpass, CMOS, CDIP8, CERDIP-8
LTC1062MJ8/883	Linear	获取价格	IC SWITCHED CAPACITOR FILTER, BUTTERWORTH, LOWPASS, CDIP8, HERMETIC SEALED, CERDIP-8, Acti
LTC1062MS8	Linear	获取价格	IC SWITCHED CAPACITOR FILTER, BUTTERWORTH, LOWPASS, PDSO8, PLASTIC, SO-8, Active Filter
LTC1063	Linear	获取价格	DC Accurate, Clock-Tunable 5th Order Butterworth Lowpass Filter
LTC1063	ADI	获取价格	DC 准确、时钟可调谐的 5 阶 Butterworth 低通滤波器

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