MAX7401 Maxim, MAX7401 Datasheet - Page 6

• Manufacturer Part Number: MAX7401
• Description: 8th-Order / Lowpass / Bessel / Switched-Capacitor Filters
• Manufacturer: Maxim

8th-Order, Lowpass, Bessel,
Switched-Capacitor Filters
(V
noted.)
6
DD
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
_______________________________________________________________________________________
= +5V for MAX7401, V
-40
NORMALIZED OSCILLATOR FREQUENCY
MAX7405
-20
MAX7401
vs. TEMPERATURE
0
TEMPERATURE (°C)
20
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
40
0
DD
C
OSC
60
= +3V for MAX7405; f
0.5
= 390pF
INPUT SIGNAL AMPLITUDE
80
THD PLUS NOISE vs.
1.0
AMPLITUDE (Vp-p)
Table A. THD Plus Noise vs. Input
Signal Amplitude Test Conditions
TRACE
100
MAX7405
A
B
1.5
2.0
Typical Operating Characteristics (continued)
NO LOAD
(SEE TABLE A)
-10
-20
-30
-40
-50
-60
-70
-80
-90
1000
(Hz)
200
0
f
IN
A
CLK
0
2.5
B
= 100kHz; SHDN = V
INPUT SIGNAL AMPLITUDE
(kHz)
3.0
1
f
THD PLUS NOISE vs.
5
1
C
AMPLITUDE (Vp-p)
MAX7401
2
(kHz)
f
500
100
CLK
3
(SEE TABLE A)
NO LOAD
BANDWIDTH (kHz)
DD
B
MEASUREMENT
4
A
; V
COM
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
5
80
22
0
= V
f
f
MEASUREMENT BW = 22kHz
THD PLUS NOISE vs. INPUT SIGNAL
IN
C
AMPLITUDE AND RESISTIVE LOAD
= 1kHz
= 200Hz
OS
0.5
= V
-10
-20
-30
-40
-50
-60
-70
-80
-90
1.0
AMPLITUDE (Vp-p)
DD
0
MAX7405
0
/ 2; T
THD PLUS NOISE vs. INPUT SIGNAL
AMPLITUDE AND RESISTIVE LOAD
1.5
f
f
MEASUREMENT BW = 22kHz
IN
C
= 1kHz
= 200Hz
A
1
2.0
= +25°C; unless otherwise
R
L
AMPLITUDE (Vp-p)
R
= 10k
R
L
MAX7401
L
2
= 1k
2.5
= 500
3.0
3
R
L
R
R
L
= 500
L
= 10k
= 1k
4
5