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MAX7421 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX7421
Description  5th-Order, Lowpass, Switched-Capacitor Filters
PDF  14 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX7421 Datasheet(HTML) 4 Page - Maxim Integrated Products

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5th-Order, Lowpass,
Switched-Capacitor Filters
4
_______________________________________________________________________________________
FILTER CHARACTERISTICS
(VDD = +5V for MAX7418–MAX7421, VDD = +3V for MAX7422–MAX7425 filter output measured at OUT, 10k
Ω || 50pF load to GND at
OUT, SHDN = VDD, fCLK = 2.2MHz, TA = TMIN to TMAX, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS—MAX7422–MAX7425 (continued)
(VDD = +3V, filter output measured at OUT pin, 10k
Ω || 50pF load to GND at OUT, OS = COM, 0.1µF capacitor from COM to GND,
SHDN = VDD, fCLK = 2.2MHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
CONDITIONS
MIN
TYP
MAX
SYMBOL
PARAMETER
Measured at DC
SHDN = GND
0.5
VSDL
SHDN Input Low
2.5
VSDH
SHDN Input High
70
PSRR
Power-Supply Rejection Ratio
0.2
1
ISHDN
Shutdown Current
2.6
3.4
2.7
3.6
VDD
Supply Voltage
V
V
dB
µA
V
UNITS
SHDN Input Leakage Current
VSHDN = 0 to VDD
±0.2
±10
µA
COSC = 1000pF
(Note 3)
68
87
106
fOSC
Internal Oscillator Frequency
kHz
0.5
VIL
Clock Input Low
V
2.5
VIH
Clock Input High
V
68
87
106
ICLK
Clock Output Current (Internal
Oscillator Mode)
kHz
MAX7422/MAX7425
MAX7423/MAX7424
86
110
135
MAX7422/MAX7425
MAX7423/MAX7424
86
110
135
Operating mode,
no load
3.0
3.8
Supply Current
IDD
mA
MAX7422/MAX7425
MAX7423/MAX7424
MIN
TYP
MAX
CONDITIONS
PARAMETER
-0.4
±0.2
0.4
fIN = 0.38fC
UNITS
Insertion Gain with DC Gain
Error Removed (Note 4)
dB
fIN = 0.68fC
-0.4
±0.2
0.4
-0.4
±0.2
0.4
fIN = 0.87fC
-36
-33
fIN = 1.25fC
fIN = 0.97fC
-0.4
±0.2
0.4
-0.7
±0.2
0.2
fIN = fC
fIN = 1.43fC
-37.2
-35
-1
-0.74
fIN = 0.5fC
fIN = 3.25fC
-37.2
-35
Insertion Gain Relative to
DC Gain
dB
fIN = fC
-3.6
-3.0
-2.4
fIN = 4fC
-41.0
-35
-67
-60
fIN = 7fC
CLOCK
POWER REQUIREMENTS
ELLIPTIC, r = 1.2—MAX7421/MAX7425
BESSEL FILTERS—MAX7419/MAX7423
SHUTDOWN



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