LTC1565-31
TYPICAL PERFOR A CE CHARACTERISTICS
Passband Gain vs Frequency
Over Temperature
0.5
0.4
0.3
0.2
–40°C
V
S
= 5V
GAIN (dB)
GAIN (dB)
GAIN (dB)
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
25k
100k
FREQUENCY (Hz)
400k
1565 G03
85°C
25°C
Common Mode Rejection Ratio
110
V
IN
= 1V
P-P
V
S
= 5V
100 T
A
= 25°C
90
80
SUPPLY CURRENT (mA)
CMRR (dB)
80
70
60
50
10
3
PSRR (dB)
10
4
10
5
10
6
FREQUENCY (Hz)
PIN FUNCTIONS
+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 0.1µF
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 2.5kΩ in normal mode. In
shutdown, the pin is internally biased to the same levels
as normal mode. The impedance in shutdown mode is
typically 500kΩ but varies with supply voltage and
temperature.
4
U W
1565 G06
Stopband Gain vs Frequency
–40
Stopband Gain vs Frequency
Over Temperature
–40
V
S
= 5V
–50
–50
–40°C
25°C
85°C
–60
V
S
= 5V
–60
–70
–70
–80
V
S
=
±5V
–80
–90
1.5
1.8
2.4
2.1
FREQUENCY (MHz)
2.7
3.0
1565 G04
–90
1.5
1.8
2.4
2.1
FREQUENCY (MHz)
2.7
3.0
1565 G04
Power Supply Rejection Ratio
V
IN
= 200mV
P-P
V
S
= 5V
T
A
= 25°C
Supply Current vs Temperature
26
70
25
V
S
=
±5V
60
50
V
S
= 5V
24
40
10
7
30
10
3
10
4
10
5
10
6
FREQUENCY (Hz)
10
7
1565 G07
23
–50 –30
30
50
–10 10
TEMPERATURE (°C)
70
90
1565 G08
U
U
U
LINER [ LINEAR TECHNOLOGY ]
