MAX7418 Maxim, MAX7418 Datasheet - Page 7

• Manufacturer Part Number: MAX7418
• Description: 5th-Order / Lowpass / Switched-Capacitor Filters
• Manufacturer: Maxim

(V
T
A
____________________________Typical Operating Characteristics (continued)
DD
-10
-20
-30
-40
-50
-60
-70
-80
-90
-10
-20
-30
-40
-50
-60
-70
-80
-90
= +25°C, unless otherwise noted.
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
0
0
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
= +5V for MAX7418–MAX7421, V
0
0
0
SEE TABLE A
SEE TABLE A
SEE TABLE A
0.5
1
1
E
(ELLIPTIC, r = 1.25)
(ELLIPTIC, r = 1.6)
(BUTTERWORTH)
AMPLITUDE (Vp-p)
AMPLITUDE (Vp-p)
1.0
AMPLITUDE (Vp-p)
D
MAX7418
MAX7421
MAX7424
2
2
C
_______________________________________________________________________________________
A
1.5
3
D
3
E
B
2.0
4
4
2.5
DD
3.0
5
5
= +3V for MAX7422–MAX7425, f
-10
-20
-30
-40
-50
-60
-70
-80
-90
-10
-20
-30
-40
-50
-60
-70
-80
-90
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
0
0
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
0
0
0
SEE TABLE A
SEE TABLE A
SEE TABLE A
0.5
0.5
Switched-Capacitor Filters
1
E
(ELLIPTIC, r = 1.25)
(ELLIPTIC, r = 1.6)
1.0
1.0
AMPLITUDE (Vp-p)
AMPLITUDE (Vp-p)
AMPLITUDE (Vp-p)
C
MAX7425
MAX7422
MAX7419
D
(BESSEL)
2
C
1.5
1.5
A
A
3
2.0
CLK
2.0
B
5th-Order, Lowpass,
B
= 2.2MHz, SHDN = V
4
2.5
2.5
3.0
3.0
5
7000
6000
5000
4000
3000
2000
1000
-10
-20
-30
-40
-50
-60
-70
-80
-90
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
0
0
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
0
0
1
SEE TABLE A
SEE TABLE A
ELLIPTIC
INTERNAL OSCILLATOR FREQUENCY
DD
vs. SMALL CAPACITANCE (pF)
0.5
, V
E
1
C
10
COM
(BUTTERWORTH)
1.0
CAPACITANCE ( pF)
AMPLITUDE (Vp-p)
AMPLITUDE (Vp-p)
D
MAX7423
A
MAX7420
(BESSEL)
= V
2
100
1.5
BESSEL/BUTTERWORTH
OS
3
= V
2.0
B
DD
1000
4
/ 2,
2.5
10000
3.0
5
7