MAX7401 데이터 시트보기 (PDF) - Maxim Integrated
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MAX7401 Datasheet PDF : 12 Pages
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8th-Order, Lowpass, Bessel,
Switched-Capacitor Filters
Typical Operating Characteristics (continued)
(VDD = +5V for MAX7401, VDD = +3V for MAX7405; fCLK = 100kHz; SHDN = VDD; VCOM = VOS = VDD / 2; TA = +25°C; unless otherwise
noted.)
NORMALIZED OSCILLATOR FREQUENCY
vs. TEMPERATURE
1.04
1.03
COSC = 390pF
1.02
MAX7401
1.01
1.00 MAX7405
0.99
0.98
0.97
0.96
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
MAX7401
THD PLUS NOISE vs.
INPUT SIGNAL AMPLITUDE
NO LOAD
(SEE TABLE A)
A
B
1
2
3
4
5
AMPLITUDE (Vp-p)
MAX7401
THD PLUS NOISE vs. INPUT SIGNAL
AMPLITUDE AND RESISTIVE LOAD
0
fIN = 200Hz
-10
fC = 1kHz
MEASUREMENT BW = 22kHz
-20
-30
-40
RL = 500Ω
-50
-60
RL = 1kΩ
-70
RL = 10kΩ
-80
-90
0
1
2
3
4
5
AMPLITUDE (Vp-p)
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
MAX7405
THD PLUS NOISE vs.
INPUT SIGNAL AMPLITUDE
NO LOAD
(SEE TABLE A)
AB
0.5 1.0 1.5 2.0 2.5 3.0
AMPLITUDE (Vp-p)
MAX7405
THD PLUS NOISE vs. INPUT SIGNAL
AMPLITUDE AND RESISTIVE LOAD
0
-10
fIN = 200Hz
fC = 1kHz
-20 MEASUREMENT BW = 22kHz
-30
-40
-50
-60
RL = 500Ω
-70
RL = 1kΩ
RL = 10kΩ
-80
-90
0
0.5 1.0 1.5 2.0 2.5 3.0
AMPLITUDE (Vp-p)
Table A. THD Plus Noise vs. Input
Signal Amplitude Test Conditions
TRACE
A
B
fIN
(Hz)
1000
200
fC
(kHz)
5
1
fCLK
(kHz)
500
100
MEASUREMENT
BANDWIDTH (kHz)
80
22
6 _______________________________________________________________________________________
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