LTC1563-3IGN

更新时间： 2024-02-26 05:46:52

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
12页	149K
描述
Active RC, 4th Order Lowpass Filter Family

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技术参数
数据手册

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LTC1563-3IGN 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
零件包装代码：	SSOP	包装说明：	SSOP, SSOP16,.25
针数：	16	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.29	有源滤波器类型：	CONTINUOUS TIME FILTER
中心频率或截止频率最大范围：	256 kHz	中心频率或截止频率最小范围：	0.256 kHz
JESD-30 代码：	R-PDSO-G16	JESD-609代码：	e3
长度：	4.9 mm	湿度敏感等级：	1
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
阶次：	4TH	封装主体材料：	PLASTIC/EPOXY
封装代码：	SSOP	封装等效代码：	SSOP16,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：	250	极和零点：	4 AND 0
电源：	+-5/2.7/11 V	认证状态：	Not Qualified
响应：	LOWPASS	座面最大高度：	1.75 mm
子类别：	Active Filters	最大供电电流 (Isup)：	23 mA
最大供电电压 (Vsup)：	11 V	最小供电电压 (Vsup)：	2.7 V
标称供电电压 (Vsup)：	4.75 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：	0.635 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：	BESSEL
宽度：	3.899 mm	Base Number Matches：	1

LTC1563-3IGN 数据手册

LTC1563-2/ LTC1563-3

PIN FUNCTIONS

LP (Pin 1): Low Power. The LTC1563-X has two operating

modes. Most applications use the part’s High Speed

operating mode. Some lower frequency, lower gain appli-

cations can take advantage of the Low Power mode. When

placedintheLowPowermode,thesupplycurrentis nearly

an order of magnitude lower than the High Speed mode.

Refer to the Applications Information section for more

information on the Low Power mode.

designed to drive a nominal net load of 5kΩ and 20pF.

Refer to the Applications Information section for more

details on output loading effects.

AGND (Pin 7): Analog Ground. The AGND pin is the

midpointofaninternalresistivevoltagedividerdeveloping

a potential halfway between the V⁺and V^–pins. The

equivalentseries resistanceis nominally10kΩ.This serves

as an internal ground reference. Filter performance will

reflect the quality of the analog signal ground. An analog

ground plane surrounding the package is recommended.

The analog ground plane should be connected to any

digital ground at a single point. Figures 1 and 2 show the

proper connections for dual and single supply operation.

V^–, V⁺(Pins 8, 16): The V^–and V⁺pins should be

bypassed with 0.1µF capacitors to an adequate analog

ground or ground plane. These capacitors should be

connected as closely as possible to the supply pins. Low

noise linear supplies are recommended. Switching sup-

plies are not recommended as they will decrease the

filter’s dynamic range. Refer to Figures 1 and 2 for the

proper connections for dual and single supply operation.

The LTC1563-X is in the High Speed mode when the

LPinputis atalogichighleveloris open-circuited. Asmall

pull-up current source at the LP input defaults the

LTC1563-X to the High Speed mode if the pin is left open.

The part is in the Low Power mode when the pin is pulled

to a logic low level or connected to V^–.

SA, SB (Pins 2, 11): Summing Pins. These pins are a

summing point for signals fed forward and backward.

Capacitance on the SA or SB pin will cause excess peaking

of the frequency response near the cutoff frequency. The

three external resistors for each section should be located

as close as possible to the summing pin to minimize this

effect. Refer to the Applications Information section for

more details.

EN (Pin 9): ENABLE. When the EN input goes high or is

open-circuited, the LTC1563-X enters a shutdown state

andonlyjunctionleakagecurrents flow.TheAGNDpin,the

LPA output and the LPB output assume high impedance

states. If an input signal is applied to a complete filter

circuit while the LTC1563-X is in shutdown, some signal

will normally flow to the output through passive compo-

nents around the inactive part.

NC (Pins 3, 5, 10, 12, 14): These pins are not connected

internally. For best performance, they should be con-

nected to ground.

INVA, INVB (Pins 4, 13): Inverting Input. Each of the INV

pins is an inverting input of an op amp. Note that the INV

pins are high impedance, sensitive nodes of the filter and

very susceptible to coupling of unintended signals.

Capacitance on the INV nodes will also affect the fre-

quency response of the filter sections. For these reasons,

printed circuit connections to the INV pins must be kept as

short as possible.

A small internal pull-up current source at the EN input

defaults the LTC1563 to the shutdown state if the EN pin

is leftfloating. Therefore, theusermustconnecttheENpin

to V^–(or a logic low) to enable the part for normal

operation.

LPA, LPB (Pins 6, 15): Lowpass Output. These pins are

the rail-to-rail outputs of an op amp. Each output is

1 2 3 456 7 8...12

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型号	品牌	描述	获取价格	数据表
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