Rainbow-electronics MAX7480 Manual de usuario Pagina 4

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MAX7480
8th-Order, Lowpass, Butterworth,
Switched-Capacitor Filter
4 _______________________________________________________________________________________
-120
-80
-100
-40
-60
0
-20
20
0 2.01.0 3.0 4.00.5 2.51.5 3.5 4.5 5.0
FREQUENCY RESPONSE
MAX7480 toc01
INPUT FREQUENCY (kHz)
GAIN (dB)
f
C
= 1kHz
-3.5
-2.5
-3.0
-2.0
-0.5
0
-1.0
-1.5
0.5
0 202 404 606 808 1010
PASSBAND FREQUENCY RESPONSE
MAX7480 toc02
INPUT FREQUENCY (Hz)
GAIN (dB)
f
C
= 1kHz
2.70
2.85
2.80
2.75
2.90
2.95
3.00
-40 200-20 40 60 80 100
SUPPLY CURRENT vs. TEMPERATURE
MAX7480 toc05
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
NO LOAD
-2.0
-1.5
-1.0
-0.5
0
0.5
1.0
1.5
2.0
4.5 4.84.6 4.7 5.04.9 5.25.1 5.45.3 5.5
DC OFFSET VOLTAGE
vs. SUPPLY VOLTAGE
MAX7480-06
SUPPLY VOLTAGE (V)
DC OFFSET VOLTAGE (mV)
V
IN
= V
COM
0.95
0.96
0.97
0.98
0.99
1.01
1.00
1.02
1.03
1.04
1.05
4.5 4.6 4.8 4.94.7 5.0 5.1 5.2 5.3 5.4 5.5
NORMALIZED INTERNAL OSCILLATOR
FREQUENCY vs. SUPPLY VOLTAGE
MAX7480-09
SUPPLY VOLTAGE (V)
NORMALIZED OSCILLATOR FREQUENCY
C
OSC
= 530pF
640
480
560
400
160
80
240
320
0
0 400 800 1200 1600 2000
PHASE RESPONSE
MAX7480 toc03
INPUT FREQUENCY (Hz)
PHASE SHIFT (DEGREES)
f
C
= 1kHz
2.70
2.85
2.80
2.75
2.90
2.95
3.00
4.5 4.94.84.6 4.7 5.0 5.1 5.2 5.3 5.4 5.5
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX7480 toc04
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
NO LOAD
-1.5
-1.0
0
-0.5
0.5
1.0
-40 0-20 20 40 60 80 100
OFFSET VOLTAGE vs. TEMPERATURE
MAX7401 toc07
TEMPERATURE (°C)
OFFSET VOLTAGE (mV)
V
IN
= V
COM
= V
DD
/ 2
Typical Operating Characteristics
(V
DD
= +5V, f
CLK
= 100kHz, SHDN = V
DD
, V
COM
= V
OS
= V
DD
/ 2, T
A
= +25°C, unless otherwise noted.)
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