lt1568 Linear Technology Corporation, lt1568 Datasheet - Page 9

• Manufacturer Part Number: lt1568
• Description: Very Low Noise, High Frequency Active Rc, Filter Building Block
• Manufacturer: Linear Technology Corporation

PI FU CTIO S
BLOCK DIAGRA A D TEST CIRCUIT
DIFFERENTIAL
U
OUTPUTS
A-SIDE
INA
+
–
Dual Supply Power and Ground Connections
U
ANALOG
GROUND
PLANE
OUTA
OUTA
0.1 F
V
V
1.27k
1.27k
–
–
R11
SINGLE POINT
SYSTEM GROUND
0.1 F
R21
0.1 F
C
BP1
1.27k
R31
V
+
U
OUTA
OUTA
GNDA
INVA
1
2
3
4
5
6
7
8
SA
NC
V
V
+
–
V
INVA
SA
OUTA
OUTA
GNDA
NC
V
+
–
W U
1
2
3
4
5
6
7
8
LT1568
GNDB
OUTB
OUTB
INVB
DIGITAL GROUND PLANE
SB
EN
V
V
+
–
16
15
14
13
12
11
10
9
(IF ANY)
C2A
C1A
0.1 F
A1A
1568 PF01
– 1
V
+
–
+
V
V
+
–
5k
5k
–
+
Single Supply Power and Ground Connections
A1B
– 1
0.1 F
ANALOG
GROUND
PLANE
SINGLE POINT
SYSTEM GROUND
C1B
1
2
3
4
5
6
7
8
C2B
V
INVA
SA
OUTA
OUTA
GNDA
NC
V
+
–
LT1568
16
15
14
13
12
11
10
9
SB
V
INVB
OUTB
OUTB
GNDB
EN
V
GNDB
OUTB
OUTB
+
INVB
–
DIGITAL GROUND PLANE
SB
EN
V
V
+
–
1.27k
R32
16
15
14
13
12
11
10
1568BD
9
TYPICAL CAPACITOR VALUES:
C1 = 105.7pF 0.75%
C2 = 141.3pF 0.75%
(IF ANY)
1.27k
R22
1.27k
R12
OUTB
OUTB
LT1568
0.1 F
1568 PF02
+
–
INB
B-SIDE
DIFFERENTIAL
OUTPUTS
V
+
9
1568f