LTC1067-50IS#TRPBF Linear Technology, LTC1067-50IS#TRPBF Datasheet - Page 7

• Manufacturer Part Number: LTC1067-50IS#TRPBF
• Description: IC FILTR BLDNGBLK R-R DUAL16SOIC
• Manufacturer: Linear Technology

Specifications of LTC1067-50IS#TRPBF

• Filter Type: Universal Switched Capacitor
• Frequency - Cutoff Or Center: 40kHz
• Number Of Filters: 2
• Max-order: 4th
• Voltage - Supply: 2.7 V ~ 11 V, ±2.7 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIN
V
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
+
, V
U
0.1 F
–
V
FUNCTIONS
Figure 1. Dual Supply Ground Plane Connections
(Pins 1, 3,14): The V
+
STAR
SYSTEM
GROUND
U
1
2
3
4
5
6
7
8
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
V
NC
V
SA
LPA
BPA
HPA/NA
INV A
LTC1067/LTC1067-50 Mode 1B
Noise Increase vs R5/R6 Ratio
0
+
+
U
0.5
LTC1067-50
LTC1067
1.0
W
GROUND
DIGITAL
+
HPB/NB
PLANE
R5/R6 RATIO
AGND
INV B
(Pins 1, 3) and the V
1.5
BPB
CLK
LPB
SB
V
–
U
2.0
16
15
14
13
12
11
10
9
SOURCE
CLOCK
2.5
200
3.0
0.1 F
1067 G25
V
–
3.5
1067 F01
–
(Pin
noise ratio of the filter. The supply’s power-up slew rate
should be less than 1V/ s. When V
V
to prevent latch-up. Figures 1 and 2 show typical connec-
tions for dual and single supply operation.
–
is allowed to go above ground, a diode should clamp V
Figure 2. Single Supply Ground Plane Connections
0.1 F
FOR MODE 3, THE SA AND SB SUMMING NODE PINS
ARE TIED TO THE AGND PIN
V
+
STAR
SYSTEM
GROUND
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.2
LTC1067/LTC1067-50 Mode 3
Noise Increase vs R2/R4 Ratio
0.3
1
2
3
4
5
6
7
8
LTC1067/LTC1067-50
V
NC
V
SA
LPA
BPA
HPA/NA
INV A
0.4
+
+
LTC1067-50
0.5
R2/R4 RATIO
LTC1067
0.6
HPB/NB
0.7
AGND
GROUND
INV B
DIGITAL
PLANE
BPB
CLK
LPB
+
V
SB
is applied before V
–
0.8
16
15
14
13
12
11
10
9
0.9
SOURCE
1067 G26
CLOCK
1.0
200
1 F
106 7 F02
–
, and
7
–