
MAX7480
8th-Order, Lowpass, Butterworth,
Switched-Capacitor Filter
2
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ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VDD = +5V, filter output measured at OUT, 10k || 50pF load to GND at OUT, OS = COM, 0.1F from COM to GND, SHDN =
VDD, fCLK = 100kHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°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.
VDD to GND ..............................................................-0.3V to +6V
IN, OUT, COM, OS, CLK ............................-0.3V to (VDD + 0.3V)
SHDN........................................................................-0.3V to +6V
OUT Short-Circuit Duration...................................................1sec
Continuous Power Dissipation (TA = +70°C)
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
8-Pin DIP (derate 9.09mW/°C above +70°C) ...............727mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
COSC = 1000pF (Note 4)
VOS = 0 to (VDD - 1V) (Note 3)
SHDN = GND, VCOM = 0 to VDD
(Note 1)
Input, COM externally driven
fIN = 200Hz, VIN = 4Vp-p,
measurement bandwidth = 22kHz
VIN = VCOM = VDD / 2
VCOM = VDD / 2 (Note 2)
CONDITIONS
40
53
67
fOSC
Internal Oscillator Frequency
±0.1
±10
Input Leakage Current at OS
±0.1
±10
Input Leakage Current at COM
50
500
CL
10
1
RL
Resistive Output Load Drive
10
Clock Feedthrough
75
125
RCOM
Input Resistance at COM
100:1
fCLK /fC
Clock-to-Corner Ratio
0.001 to 2
fC
Corner Frequency
VCOM
1
AOS
OS Voltage Gain to OUT
-73
THD+N
Total Harmonic Distortion
plus Noise
10
Clock-to-Corner Tempco
0.25
VDD - 0.25
Output Voltage Range
±5
±25
VOFFSET
Output Offset Voltage
-0.1
0.15
0.3
DC Insertion Gain with
Output Offset Removed
MIN
TYP
MAX
SYMBOL
PARAMETER
VCLK = 0 or 5V
0.5
VIL
Clock Input Low
VDD - 0.5
VIH
Clock Input High
±24
±40
ICLK
Clock Input Current
V
A
kHz
A
pF
k
mVp-p
k
V
V/ V
dB
mV
V
ppm/°C
kHz
UNITS
Maximum Capacitive Load at
OUT
COM Voltage Range
VDD / 2
VDD / 2 VDD / 2
- 0.5
+ 0.5
VCOM ±0.1
VOS
Input Voltage Range at OS
V
VDD / 2
VDD / 2 VDD / 2
- 0.2
+ 0.2
FILTER CHARACTERISTICS
CLOCK
Output, COM internally biased