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MAX7426 Datasheet(数据表) 4 Page - Maxim Integrated Products

部件型号  MAX7426
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

MAX7426 Datasheet(HTML) 4 Page - Maxim Integrated Products

  MAX7426 数据表 HTML 1Page - Maxim Integrated Products MAX7426 数据表 HTML 2Page - Maxim Integrated Products MAX7426 数据表 HTML 3Page - Maxim Integrated Products MAX7426 数据表 HTML 4Page - Maxim Integrated Products MAX7426 数据表 HTML 5Page - Maxim Integrated Products MAX7426 数据表 HTML 6Page - Maxim Integrated Products MAX7426 数据表 HTML 7Page - Maxim Integrated Products MAX7426 数据表 HTML 8Page - Maxim Integrated Products MAX7426 数据表 HTML 9Page - Maxim Integrated Products Next Button
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5th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
4
_______________________________________________________________________________________
COSC = 1000pF (Note 3)
CONDITIONS
13.5
17.5
21.5
fOSC
Internal Oscillator Frequency
MIN
TYP
MAX
SYMBOL
PARAMETER
Measured at DC
SHDN = GND
Operating mode, no load
VCLK = 0 or 3V
0.5
VSDL
SHDN Input Low
2.5
VSDH
SHDN Input High
70
PSRR
Power-Supply Rejection Ratio
0.2
1
ISHDN
Shutdown Current
0.75
1.0
2.7
3.6
VDD
Supply Voltage
0.5
VIL
Clock Input Low
2.5
VIH
Clock Input High
±7.5
±12.5
ICLK
Clock Output Current
(internal oscillator mode)
V
V
dB
µA
V
V
V
µA
kHz
UNITS
SHDN Input Leakage Current
V SHDN = 0 to VDD
±0.2
±10
µA
ELECTRICAL CHARACTERISTICS—MAX7427 (continued)
(VDD = +3V, filter output measured at OUT pin, 10k
|| 50pF load to GND at OUT, SHDN = VDD, OS = COM, 0.1µF from COM to
GND, fCLK = 100kHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
ELLIPTIC FILTER CHARACTERISTICS (r = 1.25)
(VDD = +5V for MAX7426, VDD = +3V for MAX7427, filter output measured at OUT, 10k
|| 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 sinu-
soidal input at 0.2fC.
Note 2: DC insertion gain is defined as
∆VOUT / ∆VIN.
Note 3: fOSC (kHz)
≈ 17.5 103 / 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
mA
IDD
Supply Current
CLOCK
POWER REQUIREMENTS
SHUTDOWN




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