Typical operating characteristics (continued) – Rainbow Electronics MAX7425 User Manual
Page 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.
MAX7418–MAX7425
5th-Order, Lowpass,
Switched-Capacitor Filters
_______________________________________________________________________________________
7
-90
-70
-80
-40
-50
-60
-10
-20
-30
0
0
2
1
3
4
5
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
0
2
1
3
4
5
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
0
2
1
3
4
5
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
0
2
1
3
4
5
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
0
1.0
0.5
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
0
1.0
0.5
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
-90
-70
-80
-40
-50
-60
-30
-20
-10
0
0
0.5
1.0
1.5
2.0
2.5
3.0
MAX7424
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
(BUTTERWORTH)
MAX7418 toc19
AMPLITUDE (Vp-p)
THD + N (dB)
B
A
C
SEE TABLE A
-90
-70
-80
-40
-50
-60
-30
-20
-10
0
0
0.5
1.0
1.5
2.0
2.5
3.0
MAX7425
THD + NOISE vs. INPUT SIGNAL AMPLITUDE
(ELLIPTIC, r = 1.25)
MAX7418 toc20
AMPLITUDE (Vp-p)
THD + N (dB)
B
A
C
SEE TABLE A
0
2000
1000
4000
3000
6000
5000
7000
INTERNAL OSCILLATOR FREQUENCY
vs. SMALL CAPACITANCE (pF)
MAX7418 toc21
CAPACITANCE ( pF)
OSCILLATOR FREQUENCY (kHz)
1
10
100
1000
10000
ELLIPTIC
BESSEL/BUTTERWORTH