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| MAX7418 Datasheet, PDF (3/14 Pages) Maxim Integrated Products – 5th-Order, Lowpass, Switched-Capacitor Filters | |||
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5th-Order, Lowpass,
Switched-Capacitor Filters
ELECTRICAL CHARACTERISTICSâMAX7418âMAX7421 (continued)
(VDD = +5V, filter output measured at OUT, 10k⦠|| 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.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
POWER REQUIREMENTS
Supply Voltage
VDD
4.5
5.5
V
Supply Current
IDD
Operating mode,
no load
MAX7418/MAX7421
MAX7419/MAX7420
2.9
3.6
mA
3.4
4.1
Shutdown Current
I SHDN SHDN = GND
0.2
1
µA
Power-Supply Rejection Ratio
PSRR IN = COM (Note 4)
70
dB
SHUTDOWN
SHDN Input High
SHDN Input Low
SHDN Input Leakage Current
VSDH
VSDL
V SHDN = 0 to VDD
4.5
V
0.5
V
±0.2 ±10
µA
ELECTRICAL CHARACTERISTICSâMAX7422âMAX7425
(VDD = +3V, filter output measured at OUT pin, 10k⦠|| 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.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP MAX UNITS
FILTER CHARACTERISTICS
Corner-Frequency Range
Clock-to-Corner Ratio
Clock-to-Corner Tempco
fC
fCLK/fC
VIN = 2.5Vp-p
(Note 1)
MAX7422/MAX7425
MAX7423/MAX7424
0.001 to 45
0.001 to 45
100:1
10
kHz
ppm/°C
Output Voltage Range
Output Offset Voltage
DC Insertion Gain with Output
Offset Removed
VOFFSET
VIN = VCOM = VDD / 2
VCOM = VDD / 2
(Note 2)
MAX7422/MAX7425
MAX7423/MAX7424
0.25
0
-0.2
VDD - 0.25
V
±4
±25
mV
0.2
0.4
dB
0
+0.2
Total Harmonic Distortion plus
Noise
THD+N
fIN = 2kHz,
VIN = 2.5Vp-p,
measurement
bandwidth = 80kHz
MAX7422
MAX7423
MAX7424
MAX7425
-80
-81
dB
-70
-80
Offset Voltage Gain
COM Voltage Range
AOS
VCOM
OS to OUT
Input, COM externally driven
Output, COM internally driven
1
V/V
1.4
1.5
1.6
V
1.4
1.5
1.6
Input Voltage Range at OS
Input Resistance at COM
Clock Feedthrough
Resistive Output Load Drive
VOS
RCOM
Measured with respect to COM
RL
VCOM ±0.1
100
140
3
10
1
V
kâ¦
mVp-p
kâ¦
Maximum Capacitive Load
at OUT
CL
50
500
pF
Input Leakage Current at COM
Input Leakage Current at OS
SHDN = GND, VCOM = 0 to VDD
VOS = 0 to VDD
±0.1
±10
µA
±0.1
±10
µA
_______________________________________________________________________________________ 3
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