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LTC1564 PDF预览

LTC1564

更新时间： 2024-01-28 15:40:23
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
12页 229K
描述
10kHz to 150kHz Digitally Controlled Antialiasing Filter and 4-Bit P.G.A

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LTC1564 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：SSOP,
针数：16Reach Compliance Code：compliant
风险等级：5.53有源滤波器类型：CONTINUOUS TIME FILTER
中心频率或截止频率最大范围：150 kHz中心频率或截止频率最小范围：
JESD-30 代码：R-PDSO-G16JESD-609代码：e3
长度：6.2 mm湿度敏感等级：1
负电源电压最大值（Vsup）：-5.25 V负电源电压最小值（Vsup）：-1.35 V
标称负供电电压 (Vsup)：-2.375 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：SSOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, SHRINK PITCH峰值回流温度（摄氏度）：260
极和零点：8 AND 0认证状态：Not Qualified
响应：LOWPASS座面最大高度：2 mm
最大供电电压 (Vsup)：5.25 V最小供电电压 (Vsup)：1.35 V
标称供电电压 (Vsup)：2.375 V表面贴装：YES
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：0.65 mm
端子位置：DUAL处于峰值回流温度下的最长时间：30
传递特性：PIN PROGRAMMABLE宽度：5.3 mm

LTC1564 数据手册

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LTC1564  
10kHz to 150kHz  
Digitally Controlled  
Antialiasing Filter and 4-Bit P.G.A  
U
FEATURES  
DESCRIPTIO  
■
4-Bit Digitally Controlled 8th-Order Lowpass Filter  
The LTC®1564 is a new type of continuous time filter for  
antialiasing,reconstructionandotherband-limitingappli-  
cations.Nootheranalogcomponentsorfilterexpertiseare  
needed to use it. There is one analog input pin and one  
analog output pin. The cutoff frequency (fC) and gain are  
programmablewhiletheshapeofthelowpassresponseis  
fixed.AlatchingdigitalinterfacestoresfC andgainsettings  
oritcanbebypassedforcontroldirectlyfromthepins.The  
LTC1564 operates from 2.7V to 10V total (single or split  
supplies) and comes in a 16-pin surface mount SSOP.  
– fCUTOFF Adjustable from 10kHz to 150kHz in 10kHz  
Steps  
– 100dB Attenuation at 2.5 × fCUTOFF  
■
4-Bit Digitally Controlled Programmable Gain  
Amplifier  
– G = 1 to 16 in 1V/V Steps  
■
Miniature 16-Pin SSOP Package  
■
No External Components  
■
122dB Total System Dynamic Range  
■
Rail-to-Rail Input and Output Range  
The LTC1564 is a rail-to-rail high resolution 8th-order  
lowpass filter with two stopband notches, giving approxi-  
mately100dBattenuationat2.5timesthepassbandcutoff  
frequency fC (a de-facto standard for DSP front ends).  
Signals with low or variable levels can be normalized with  
the built-in variable gain that reduces input-referred noise  
with increasing gain for a typical dynamic range (maxi-  
mumsignalleveltominimumnoise)of122dB(20equiva-  
lent bits) with 20kHz fC and 118dB at 100kHz fC on a ±5V  
supply.  
■
2.7V to 10V Operation  
Low Noise Mute Mode  
■
■
Low Power Shutdown Mode  
U
APPLICATIO S  
■
Antialias or Reconstruction Filtering  
■
DSP Systems  
■
Communications Systems  
Scientific Instruments  
■
■
High Resolutions (16 Bits to 20 Bits)  
Other frequency-response shapes can be provided upon  
request. Please contact LTC Marketing.  
■
Processing Signals Buried in Noise  
■
Audio Signal Processing  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
■
Programmable Data Rates  
■
Automatic Gain Control (AGC)  
■
Single Part Replacing Multiple Filters  
U
TYPICAL APPLICATIO  
LTC1564 Programmable Range  
Low Noise Programmable Filter with Variable Gain  
30  
20  
10  
0
+
V
f = 150kHz  
C
GAIN = 16V/V  
0.1µF  
ANALOG  
–10  
–20  
–30  
–40  
–50  
–60  
–70  
–80  
–90  
–100  
–110  
–120  
IN  
GAIN CODE  
16 15 14 13 12 11 10  
+
9
+
–
V
AND V SUPPLIES CAN BE FROM  
IN AGND  
V
RST G3 G2 G1 G0  
1.35V TO 5.25V EACH  
TIE F AND G PINS TO V OR V TO  
SET FREQUENCY AND GAIN  
DYNAMIC RANGE 118dB TO 122dB  
AT ±5V DEPENDING ON FREQUENCY CODE  
+
–
LTC1564  
f
= 10kHz  
C
CS/  
GAIN = 1V/V  
–
OUT  
1
V
V
EN HOLD F3 F2 F1 F0  
2
3
4
5
6
7
8
0.1µF  
FREQUENCY CODE  
ANALOG  
OUT  
5
10  
100  
500  
FREQUENCY (kHz)  
1564 TA01  
–
1564 TA02  
1
1234567...12

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