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LTC1069-1IS8#TR PDF预览

LTC1069-1IS8#TR

更新时间： 2024-02-23 11:48:08
品牌 Logo 应用领域
凌特 - Linear 有源滤波器过滤器光电二极管LTE
页数 文件大小 规格书
8页 242K
描述
LTC1069-1 - Low Power, 8th Order Progressive Elliptic, Lowpass Filter; Package: SO; Pins: 8; Temperature Range: -40°C to 85°C

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LTC1069-1IS8#TR 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：SOP,
针数：8Reach Compliance Code：compliant
风险等级：5.24有源滤波器类型：SWITCHED CAPACITOR FILTER
中心频率或截止频率最大范围：8 kHz中心频率或截止频率最小范围：
JESD-30 代码：R-PDSO-G8JESD-609代码：e3
长度：4.9 mm湿度敏感等级：1
负电源电压最大值（Vsup）：-5.5 V负电源电压最小值（Vsup）：-1.57 V
标称负供电电压 (Vsup)：-5 V功能数量：1
端子数量：8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）：260
极和零点：8 AND 0认证状态：Not Qualified
响应：LOWPASS座面最大高度：1.75 mm
最大供电电压 (Vsup)：5.5 V最小供电电压 (Vsup)：1.57 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：30传递特性：ELLIPTIC
宽度：3.9 mm

LTC1069-1IS8#TR 数据手册

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LTC1069-1  
U
U
U
PIN FUNCTIONS  
NC (Pins 3, 6): No Connection. Pins 3 and 6 are not  
connected to any internal circuity; they should be prefer-  
ably tied to ground.  
fall is 1µs. The clocksignal should be routed from the right  
side of the IC package to avoid coupling into any input or  
output analog signal path. A 1k resistor between the clock  
source and the clock input pin (5) will slow down the rise  
and fall times of the clock to further reduce charge cou-  
pling, Figure 1.  
VIN (Pin 4): Filter Input Pin. The filter input pin is internally  
connected to the inverting input of an op amp through a  
43k resistor.  
Table 1. Clock Source High and Low Thresholds  
CLK (Pin 5): Clock Input Pin. Any TTL or CMOS clock  
source with a square wave output and 50% duty cycle  
(±10%) is an adequate clock source for the device. The  
power supply for the clock source should not necessarily  
be the filter’s power supply. The analog ground of the filter  
should be connected to clock’s ground at a single point  
only. Table 1 shows the clock’s low and high level thresh-  
old value for a dual or a single supply operation. A pulse  
generator can be used as a clock source provided the high  
level ON time is greater than 0.42µs (VS = ±5V). Sine  
waves less than 100kHz are not recommended for clock  
signal because excessive slow clock rise or fall times  
generate internal clock jitter. The maximum clock rise or  
POWER SUPPLY  
HIGH LEVEL  
1.5V  
LOW LEVEL  
0.5V  
Dual Supply = ±5V  
Single Supply = 10V  
Single Supply = 5V  
Single Supply = 3.3V  
6.5V  
1.5V  
1.2V  
5.5V  
0.5V  
0.5V  
VOUT (Pin 8): Filter Output Pin. Pin 8 is the output of the  
filter and it can source or sink 1mA. Driving coaxial cables  
or resistive loads less than 20k will degrade the total  
harmonic distortion of the filter. When evaluating the  
device’s dynamic range, a buffer is required to isolate the  
filter’s output from coax cables and instruments.  
U
W U U  
APPLICATIONS INFORMATION  
Temperature Behavior  
especially at ±5V supply, has a passband behavior which  
is nearly temperature independent.  
The power supply current of the LTC1069-1 has a positive  
temperature coefficient. The GBW product of its internal  
op amps is nearly constant and the speed of the device  
doesnotdegradeathightemperatures. Figures3a, 3band  
3c show the behavior of the maximum passband of the  
device for various supplies and temperatures. The filter,  
Clock Feedthrough  
The clock feedthrough is defined as the RMS value of the  
clock frequency and its harmonics that are present at the  
filter’s output pin (8). The clock feedthrough is tested with  
2.0  
2.0  
1.5  
2.0  
1.5  
V
CLK  
V
= ±5V  
S
V
f
IN  
= 3.3V  
V
f
= 5V  
S
S
1.5  
1.0  
f
= 1.5MHz  
= 750kHz  
= 1MHz  
CLK  
= 0.5V  
RMS  
CLK  
= 1.2V  
RMS  
= 2V  
RMS  
IN  
V
V
IN  
T
= 25°C  
A
1.0  
T = 85°C  
A
1.0  
T
= 25°C  
A
T
= 85°C  
0.5  
T
= 85°C  
A
A
0.5  
0.5  
T
= –40°C  
A
0
T
= 25°C  
A
0
0
T
= –40°C  
A
–0.5  
–1.0  
–1.5  
–2.0  
–0.5  
–1.0  
–1.5  
–2.0  
–0.5  
–1.0  
–1.5  
–2.0  
T
= –40°C  
A
3
5
7
9
11  
15  
1
13  
1.5  
2.5 3.5 4.5 5.5  
FREQUENCY (kHz)  
7.5  
0.5  
6.5  
1.5 2.5 3.5 4.5 5.5  
7.5 8.5 9.5 10.5  
6.5  
0.5  
FREQUENCY (kHz)  
FREQUENCY (kHz)  
1069-1 F03c  
1069-1 F03a  
1069-1 F03b  
Figure 3a  
Figure 3b  
Figure 3c  
6
1...345678

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