ltc1565-31is8-trpbf Linear Technology Corporation, ltc1565-31is8-trpbf Datasheet - Page 4

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

PIN
LTC1565-31
TYPICAL PERFOR A CE CHARACTERISTICS
+IN, –IN (Pins 1, 2): Input Pins. Signals can be applied to
either or both input pins. The typical DC gain from differ-
ential inputs (Pin 1 to Pin 2) to the differential outputs (Pin
8 to Pin 7) is 1.0V/V. The input range is described in the
Applications Information section.
GND (Pin 3): Ground. The ground pin is the reference
voltage for the filter and is internally biased to one-half the
total power supply voltage of the filter, maximizing the
dynamic range of the filter. For single supply operation,
the ground pin should be bypassed with a quality 0.1 F
4
–0.1
–0.2
–0.3
–0.4
–0.5
110
100
0.5
0.4
0.3
0.2
0.1
90
80
70
60
50
U
0
10
25k
Passband Gain vs Frequency
Over Temperature
Common Mode Rejection Ratio
V
V
T
3
V
A
IN
S
FUNCTIONS
S
= 5V
= 25 C
= 5V
= 1V
U
P-P
10
85 C
4
FREQUENCY (Hz)
FREQUENCY (Hz)
100k
10
5
25 C
U
–40 C
10
W
6
1565 G03
1565 G06
U
400k
10
7
–40
–50
–60
–70
–80
–90
80
70
60
50
40
30
10
1.5
Stopband Gain vs Frequency
Power Supply Rejection Ratio
V
V
T
3
IN
S
A
= 25 C
= 5V
= 200mV
1.8
V
10
S
V
4
= 5V
S
P-P
FREQUENCY (MHz)
= 5V
FREQUENCY (Hz)
2.1
10
ceramic capacitor to Pin 4. For dual supply operation,
connect Pin 3 to a high quality DC ground. A ground plane
should be used. A poor ground will increase noise and
distortion.
The impedance seen at Pin 3 is 2.5k in normal mode. In
shutdown, the pin is internally biased to the same levels
as normal mode. The impedance in shutdown mode is
typically 500k
temperature.
5
2.4
10
6
2.7
1565 G07
1565 G04
10
3.0
7
but varies with supply voltage and
–40
–50
–60
–70
–80
–90
26
23
25
24
–50
1.5
Supply Current vs Temperature
Stopband Gain vs Frequency
Over Temperature
V
85 C
S
–30
= 5V
–40 C
1.8
25 C
–10
TEMPERATURE ( C)
FREQUENCY (MHz)
2.1
10
V
V
S
S
= 5V
30
= 5V
2.4
50
2.7
70
1565 G08
1565 G04
3.0
90