Datasheet

MAX7418–MAX7425
5th-Order, Lowpass,
Switched-Capacitor Filters
_______________________________________________________________________________________ 7
____________________________Typical Operating Characteristics (continued)
(V
DD
= +5V for MAX7418–MAX7421, V
DD
= +3V for MAX7422–MAX7425; f
CLK
= 2.2MHz; SHDN = V
DD
; V
COM
= V
OS
= V
DD
/ 2;
T
A
= +25°C; unless otherwise noted.)
-250
-200
-100
-150
-50
0
084 1216202428
MAX7419/MAX7423
PHASE RESPONSE (BESSEL)
MAX7418 toc10
INPUT FREQUENCY (kHz)
PHASE SHIFT (DEGREES)
-350
-250
-300
-150
-200
-50
-100
0
08124 16202428
MAX7420/MAX7424
PHASE RESPONSE (BUTTERWORTH)
MAX7418 toc11
INPUT FREQUENCY (kHz)
PHASE SHIFT (DEGREES)
-450
-350
-400
-200
-250
-300
-50
-100
-150
0
08124 16202428
MAX7424/MAX7425
PHASE RESPONSE (ELLIPTIC, R = 1.25)
MAX7418 toc12
INPUT FREQUENCY (kHz)
PHASE SHIFT (DEGREES)
-90
-70
-80
-40
-50
-60
-10
-20
-30
0
021 345
MAX7418
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
(ELLIPTIC, R = 1.6)
MAX7418 toc13
AMPLITUDE (Vp-p)
THD + N (dB)
SEE TABLE A
D
E
-90
-70
-80
-40
-50
-60
-10
-20
-30
0
021 345
MAX7421
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
(ELLIPTIC, R = 1.25)
MAX7418 toc16
AMPLITUDE (Vp-p)
THD + N (dB)
SEE TABLE A
D
E
-90
-70
-80
-40
-50
-60
-10
-20
-30
0
021 345
MAX7419
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
(BESSEL)
MAX7418 toc14
AMPLITUDE (Vp-p)
THD + N (dB)
SEE TABLE A
D
E
-90
-70
-80
-40
-50
-60
-10
-20
-30
0
021 345
MAX7420
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
(BUTTERWORTH)
MAX7418 toc15
AMPLITUDE (Vp-p)
THD + N (dB)
SEE TABLE A
D
E
-90
-70
-80
-40
-50
-60
-10
-20
-30
0
01.00.5 1.5 2.0 2.5 3.0
MAX7422
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
(ELLIPTIC, R = 1.6)
MAX7418 toc17
AMPLITUDE (Vp-p)
THD + N (dB)
B
A
C
SEE TABLE A
-90
-70
-80
-40
-50
-60
-10
-20
-30
0
01.00.5 1.5 2.0 2.5 3.0
MAX7423
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
(BESSEL)
MAX7418 toc18
AMPLITUDE (Vp-p)
THD + N (dB)
A
C
B
SEE TABLE A