Datasheet
LTC1565-31
4
156531fa
TYPICAL PERFORMANCE CHARACTERISTICS
Passband Gain vs Frequency
Over Temperature
FREQUENCY (Hz)
25k
–0.5
GAIN (dB)
–0.3
–0.1
0.1
0.3
100k 400k
1565 G03
0.5
–0.4
–0.2
0
0.2
–40°C
0.4
V
S
= 5V
85°C
25°C
FREQUENCY (MHz)
1.5
GAIN (dB)
–60
–50
–40
2.7
1565 G04
–70
–80
–90
1.8
2.1
2.4
3.0
V
S
= ±5V
V
S
= 5V
FREQUENCY (MHz)
1.5
GAIN (dB)
–60
–50
–40
2.7
1565 G05
–70
–80
–90
1.8
2.1
2.4
3.0
–40°C
85°C
25°C
V
S
= 5V
Stopband Gain vs Frequency
Stopband Gain vs Frequency
Over Temperature
Common Mode Rejection Ratio
FREQUENCY (Hz)
70
CMRR (dB)
90
110
60
80
100
10
3
10
4
10
5
10
6
10
7
1565 G06
50
V
IN
= 1V
P-P
V
S
= 5V
T
A
= 25°C
Power Supply Rejection Ratio
FREQUENCY (Hz)
50
PSRR (dB)
70
80
40
60
10
3
10
4
10
5
10
6
10
7
1565 G07
30
V
IN
= 200mV
P-P
V
S
= 5V
T
A
= 25°C
Supply Current vs Temperature
TEMPERATURE (°C)
–50
SUPPLY CURRENT (mA)
25
26
10 50
1565 G08
24
–30 –10
30 70 90
23
V
S
= 5V
V
S
= ±5V
PIN FUNCTIONS
+IN, –IN (Pins 1, 2): Input Pins. Signals can be applied
to either or both input pins. The typical DC gain from dif-
ferential 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 fi lter and is internally biased to one-half
the total power supply voltage of the fi lter, maximizing the
dynamic range of the fi lter. 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.