MAX7490 Maxim, MAX7490 Datasheet - Page 6

• Manufacturer Part Number: MAX7490
• Description: Dual Universal Switched-Capacitor Filters
• Manufacturer: Maxim

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