参数资料
型号: LTC1067-50IS#PBF
厂商: Linear Technology
文件页数: 18/20页
文件大小: 0K
描述: IC FILTR BLDNGBLK R-R DUAL16SOIC
标准包装: 50
滤波器类型: 通用开关电容器
频率 - 截止或中心: 40kHz
滤波器数: 2
滤波器阶数: 4th
电源电压: 2.7 V ~ 11 V,±2.7 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
供应商设备封装: 16-SOIC
包装: 管件
7
LTC1067/LTC1067-50
PIN FUNCTIONS
UU
U
V+, V (Pins 1, 3,14): The V + (Pins 1, 3) and the V (Pin
14) should each be bypassed with a 0.1
F capacitor to an
adequate analog ground. The filter’s power supplies should
be isolated from other digital or high voltage analog
supplies. A low noise linear supply is recommended.
Using a switching power supply will lower the signal-to-
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
LTC1067/LTC1067-50 Mode 1B
Noise Increase vs R5/R6 Ratio
LTC1067/LTC1067-50 Mode 3
Noise Increase vs R2/R4 Ratio
R2/R4 RATIO
0.2
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.5
0.7
1067 G26
0.3
0.4
0.6
0.8
0.9
1.0
RELATIVE
NOISE
INCREASE
(REFERENCE
NOISE
WHEN
R2/R4
=
1)
noise ratio of the filter. The supply’s power-up slew rate
should be less than 1V/
s.WhenV+isappliedbeforeV, and
V is allowed to go above ground, a diode should clamp V
to prevent latch-up. Figures 1 and 2 show typical connec-
tions for dual and single supply operation.
0.1
F
1067 F01
200
LTC1067
LTC1067-50
CLOCK
SOURCE
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
STAR
SYSTEM
GROUND
DIGITAL
GROUND
PLANE
V+
NC
V+
SA
LPA
BPA
HPA/NA
INV A
CLK
AGND
V
SB
LPB
BPB
HPB/NB
INV B
V+
V
0.1
F
Figure 1. Dual Supply Ground Plane Connections
Figure 2. Single Supply Ground Plane Connections
0.1
F
106 7 F02
200
LTC1067
LTC1067-50
CLOCK
SOURCE
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
STAR
SYSTEM
GROUND
DIGITAL
GROUND
PLANE
V+
NC
V+
SA
LPA
BPA
HPA/NA
INV A
CLK
AGND
V
SB
LPB
BPB
HPB/NB
INV B
V+
1
F
FOR MODE 3, THE SA AND SB SUMMING NODE PINS
ARE TIED TO THE AGND PIN
R5/R6 RATIO
0
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
1.5
2.5
1067 G25
0.5
1.0
2.0
3.0
3.5
RELATIVE
NOISE
INCREASE
(REFERENCE
NOISE
WHEN
R5/R6
=
0.02)
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