MAX7409 查看數據表（PDF） - Maxim Integrated
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MAX7409 Datasheet PDF : 12 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...................................................1sec
Continuous Power Dissipation (TA = +70°C)
8-Pin DIP (derate 9.09mW/°C above +70°C) ...............727mW
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
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+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—MAX7409/MAX7410
(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 = 100kHz, 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
fc
(Note 1)
0.001 to 15
kHz
Clock-to-Corner Ratio
fCLK / fc
100:1
Clock-to-Corner Tempco
10
ppm/°C
Output Voltage Range
Output Offset Voltage
VOFFSET VIN = VCOM = VDD / 2
0.25
VDD - 0.25
V
±4
±25
mV
DC Insertion Gain with
Output Offset Removed
VCOM = VDD / 2 (Note 2)
-0.2
0
0.2
dB
Total Harmonic Distortion
plus Noise
THD+N
fIN = 200Hz, VIN = 4Vp-p,
MAX7409
measurement bandwidth = 22kHz MAX7410
-85
-78
dB
Offset Voltage Gain
COM Voltage Range
Input Voltage Range at OS
Input Resistance at COM
Clock Feedthrough
Resistive Output Load Drive
AOS
VCOM
VOS
RCOM
OS to OUT
Input, COM externally driven
Output, COM unconnected
Input, OS externally driven
RL
1
2.0
2.5
3.0
2.3
2.5
2.7
VCOM ±0.1
110
180
5
10
1
V/V
V
V
kΩ
mVp-p
kΩ
Maximum Capacitive Output
Load Drive
CL
50
500
pF
Input Leakage Current at COM
Input Leakage Current at OS
CLOCK
Internal Oscillator Frequency
SHDN = GND, VCOM = 0 to VDD
VOS = 0 to VDD
fOSC COSC = 1000pF (Note 3)
±0.1 ±10
µA
±0.1 ±10
µA
21
30
38
kHz
Clock Output Current
(Internal Oscillator Mode)
ICLK VCLK = 0 or 5V
±13.5 ±20
µA
Clock Input High
VIH
Clock Input Low
VIL
4.5
V
0.5
V
2 _______________________________________________________________________________________
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