ltc1565-31is8-trpbf Linear Technology Corporation, ltc1565-31is8-trpbf Datasheet - Page 5

• Manufacturer Part Number: ltc1565-31is8-trpbf
• Description: 650khz Continuous Time, Linear Phase Lowpass Filter
• Manufacturer: Linear Technology Corporation

BLOCK DIAGRA
PIN
V
supply (Pin 4 grounded), a quality 0.1 F ceramic bypass
capacitor is required from the positive supply pin (Pin 6)
to the negative supply pin (Pin 4). The bypass should be
as close as possible to the IC. For dual supply applications
(Pin 3 is grounded), bypass Pin 6 to Pin 3 and Pin 4 to Pin
3 with a quality 0.1 F ceramic capacitor.
The maximum voltage difference between the ground pin
(Pin 3) and the positive supply pin (Pin 6) should not
exceed 5.5V.
–
, V
U
+
FUNCTIONS
(Pins 4, 6): Power Supply Pins. For a single 5V
U
GND
+IN
–IN
V
–
U
1
2
3
4
W
V
V
+
–
–
+
+
–
~1M
5k
5k
~1M
TRANSLATION CIRCUIT
SHUTDOWN
SWITCH
SHUTDOWN
SWITCH
WITH COMMON MODE
INPUT BUFFERS
+
–
SHDN (Pin 5): Shutdown. When the Pin 5 voltage is low,
the LTC1565-31 goes into the current saving shutdown
mode. Pin 5 has a 4 A pull-up current. Leaving Pin 5 open
will place the LTC1565-31 in its normal operating mode.
– OUT, + OUT (Pins 7, 8): Output Pins. Pins 7 and 8 are the
filter differential output. Each pin can drive 1k or 300pF
loads. The common mode voltage at the output pins is the
same as the voltage at Pin 3.
R
R
7th ORDER
NETWORK
SHUTDOWN
LINEAR
FILTER
PHASE
OUTPUT
OUTPUT
BUFFER
BUFFER
V
+
4 A
1565-31 BD
8 +OUT
7 –OUT
6
5
V
SHDN
LTC1565-31
+
5