MAX7418 查看數據表（PDF） - Maxim Integrated
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MAX7418 Datasheet PDF : 14 Pages
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5th-Order, Lowpass,
Switched-Capacitor Filters
ABSOLUTE MAXIMUM RATINGS
VDD to GND ..............................................................-0.3V to +6V
IN, OUT, COM, OS, CLK, SHDN ................-0.3V to (VDD + 0.3V)
OUT Short-Circuit Duration.......................................................1s
Continuous Power Dissipation (TA = +70°C)
8-Pin µMAX (derate 4.1mW/°C above +70°C) .............330mW
Operating Temperature Ranges
MAX74 _ _C_A ...................................................0°C to +70°C
MAX74 _ _E_A ................................................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS—MAX7418–MAX7421
(VDD = +5V, filter output measured at OUT, 10kΩ || 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
Clock-to-Corner Ratio
Clock-to-Corner Tempco
fc
VIN = 4Vp-p (Note 1)
fCLK / fC
0.001 to 30
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)
MAX7418/MAX7421
MAX7419/MAX7420
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 = 4Vp-p,
measurement
bandwidth = 80kHz
MAX7418
MAX7419
MAX7420
MAX7421
-76
-78
dB
-67
-78
Offset Voltage Gain
COM Voltage Range
AOS
VCOM
OS to OUT
Input, COM externally driven
Output, COM unconnected
1
V/V
2.0
2.5 3.0
V
2.3
2.5 2.7
Input Voltage Range at OS
Input Resistance at COM
Clock Feedthrough
VOS
RCOM
Input, OS externally driven
VCOM ±0.1
100
140
5
V
kΩ
mVp-p
Resistive Output Load Drive
RL
10
1
kΩ
Maximum Capacitive Output
Load Drive
CL
50
500
pF
Input Leakage Current at COM
Input Leakage Current at OS
CLOCK
SHDN = GND, VCOM = 0 to VDD
VOS = 0 to VDD
±0.1 ±10
µA
±0.1 ±10
µA
Internal Oscillator Frequency
fOSC
COSC = 1000pF
(Note 3)
MAX7418/MAX7421
68
87
106
kHz
MAX7419/MAX7420
86
110
135
Clock Output Current
(Internal Oscillator Mode)
ICLK VCLK = 0 or 5V
MAX7418/MAX7421
MAX7419/MAX7420
±40 ±60
µA
±50 ±75
Clock Input High
VIH
Clock Input Low
VIL
4.5
V
0.5
V
2 _______________________________________________________________________________________
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