LTC1565-31IS8 Linear Technology, LTC1565-31IS8 Datasheet - Page 4

• Manufacturer Part Number: LTC1565-31IS8
• Description: IC FILTR 7TH ORDER 650KHZ 8-SOIC
• Manufacturer: Linear Technology

Specifications of LTC1565-31IS8

• Filter Type: Linear Phase, Continuous-Time Lowpass
• Frequency - Cutoff Or Center: 650kHz
• Number Of Filters: 1
• Max-order: 7th
• Voltage - Supply: 4.75 V ~ 11 V, ±4.75 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

LTC1565-31
TYPICAL PERFORMANCE CHARACTERISTICS
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
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
0
25k
10
Passband Gain vs Frequency
Over Temperature
Common Mode Rejection Ratio
V
V
V
T
3
IN
S
A
S
= 25°C
= 5V
= 5V
= 1V
P-P
10
85°C
4
FREQUENCY (Hz)
FREQUENCY (Hz)
100k
10
25°C
5
–40°C
10
6
1565 G03
1565 G06
400k
10
7
–40
–50
–60
–70
–80
–90
80
70
60
50
40
30
10
1.5
Power Supply Rejection Ratio
Stopband Gain vs Frequency
3
V
V
T
A
IN
S
= 5V
= 25°C
= 200mV
1.8
V
10
S
V
= ±5V
S
4
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 2.5kΩ 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.
5
2.4
10
6
2.7
1565 G04
1565 G07
10
3.0
7
–40
–50
–60
–70
–80
–90
26
24
23
25
–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
156531fa
1565 G08
1565 G05
3.0
90