MAX7490EEE(2000) Просмотр технического описания (PDF) - Maxim Integrated
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MAX7490EEE Datasheet PDF : 18 Pages
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Dual Universal Switched-Capacitor Filters
Typical Operating Characteristics (continued)
(VDD = +5V for MAX7490, VDD = +3V for MAX7491, fCLK = 625kHz, SHDN = EXTCLK = VDD, COM = VDD/2, Mode 1, R3 = R1 = 50kΩ,
R2 = 10kΩ, Q = 5, TA = +25°C, unless otherwise noted.)
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
0
fCLK/fO DEVIATION vs. Q
VDD = 5V
VDD = 3V
20
40
60
80 100
Q
fCLK/fO DEVIATION vs. TEMPERATURE
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-40 -15
10
35
60
85
TEMPERATURE (°C)
1
0
-1
-2
-3
-4
-5
-6
100
Q DEVIATION vs. fCLK
VDD = 5V
VDD = 3V
1000
fCLK (kHz)
10,000
Q DEVIATION vs. TEMPERATURE
2.0
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
-40 -15
10
35
60
85
TEMPERATURE (°C)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
4.0
3.9
3.8
3.7
fCLK = 3MHz
3.6
3.5
fCLK = 625kHz
3.4
3.3
3.2
fCLK = 2kHz
3.1
3.0
3.0 3.5 4.0 4.5 5.0 5.5
VDD (V)
500
450
400
350
300
250
200
150
100
50
0
0
NOISE vs. Q
20
40
60
80 100
Q
SUPPLY CURRENT vs. SUPPLY VOLTAGE
3.41
3.40
3.39
+85°C
3.38
3.37
+25°C
3.36
3.35
-40°C
3.34
3.33
3.32
3.0 3.5 4.0 4.5 5.0 5.5
VDD (V)
SUPPLY CURRENT vs. TEMPERATURE
3.7
3.6
3.5
VDD = 3V
3.4
3.3
VDD = 5V
3.2
3.1
3.0
-40 -15
10
35
60
85
TEMPERATURE (°C)
MAX7491
THD + NOISE vs. FREQUENCY
-20
A = MODE 1
-30 B = MODE 3
-40
-50
-60
-70
B
A
-80
-90
-100
-110
-120
1k
10k
INPUT FREQUENCY (Hz)
6 _______________________________________________________________________________________
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