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MAX7408 Datasheet(数据表) 5 Page - Maxim Integrated Products

部件型号  MAX7408
说明  5th-Order, Lowpass, Elliptic, Switched-Capacitor Filters
下载  12 Pages
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制造商  MAXIM [Maxim Integrated Products]
网页  http://www.maxim-ic.com
标志 MAXIM - Maxim Integrated Products

MAX7408 Datasheet(HTML) 5 Page - Maxim Integrated Products

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5th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
_______________________________________________________________________________________
5
ELLIPTIC FILTER (r = 1.25) CHARACTERISTICS—MAX7411/MAX7415
(VDD = +5V for MAX7411, VDD = +3V for MAX7415; filter output measured at OUT; 10kΩ || 50pF load to GND at OUT; SHDN = VDD,
VCOM = VOS = VDD / 2; fCLK = 100kHz; TA = TMIN to TMAX; unless otherwise noted. Typical values are at TA = +25°C.) (Note 3)
Note 1: The maximum fC is defined as the clock frequency fCLK = 100 · fC at which the peak SINAD drops to 68dB with a sinusoidal
input at 0.2fC.
Note 2: DC insertion gain is defined as
∆VOUT / ∆VIN.
Note 3: fOSC (kHz) ≈ 27 · 103 / COSC (COSC in pF).
Note 4: The input frequencies, fIN, are selected at the peaks and troughs of the ideal elliptic frequency responses.
fIN = 0.68fC
fIN = 0.38fC
fIN = 3.25fC
fIN = 1.43fC
fIN = 1.25fC
fIN = 0.87fC
fIN = 0.97fC
fIN = fC
CONDITIONS
-0.4
0.2
0.4
dB
-0.4
-0.2
0.4
Insertion Gain
with DC Gain Error Removed
(Note 4)
-37.2
-35
-37.2
-35
-38.5
-34
-0.4
-0.2
0.4
-0.4
0.2
0.4
-0.7
-0.2
0.2
UNITS
MIN
TYP
MAX
PARAMETER
-120
-100
-80
-20
0
-40
-60
20
0
1
2
3
4
5
MAX7408/MAX7412
FREQUENCY RESPONSE
INPUT FREQUENCY (kHz)
fC = 1kHz
r = 1.6
-120
-100
-80
-20
0
-40
-60
20
0
1
2
3
4
5
MAX7411/MAX7415
FREQUENCY RESPONSE
INPUT FREQUENCY (kHz)
fC = 1kHz
r = 1.25
-1.2
-1.0
-0.8
-0.2
0
-0.4
-0.6
0.2
0
204
408
612
816
1.02k
MAX7408/MAX7412
PASSBAND FREQUENCY RESPONSE
INPUT FREQUENCY (Hz)
fC = 1kHz
r = 1.6
Typical Operating Characteristics
(VDD = +5V for MAX7408/MAX7411, VDD = +3V for MAX7412/MAX7415; fCLK = 100kHz; SHDN = VDD; VCOM = VOS = VDD / 2;
TA = +25°C; unless otherwise noted.)




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