MAX7480
8th-Order, Lowpass, Butterworth,
Switched-Capacitor Filter
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DD
= +5V, filter output measured at OUT, 10kΩ || 50pF load to GND at OUT, OS = COM, 0.1µF from COM to GND, SHDN =
V
DD
, f
CLK
= 100kHz, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +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.
V
DD
to GND..............................................................-0.3V to +6V
IN, OUT, COM, OS, CLK............................-0.3V to (V
DD
+ 0.3V)
SHDN........................................................................-0.3V to +6V
OUT Short-Circuit Duration...................................................1sec
Continuous Power Dissipation (T
A
= +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
C
OSC
= 1000pF (Note 4)
V
OS
= 0 to (V
DD
- 1V) (Note 3)
SHDN = GND, V
COM
= 0 to V
DD
(Note 1)
Input, COM externally driven
f
IN
= 200Hz, V
IN
= 4Vp-p,
measurement bandwidth = 22kHz
V
IN
= V
COM
= V
DD
/ 2
V
COM
= V
DD
/ 2 (Note 2)
CONDITIONS
40 53 67f
OSC
Internal Oscillator Frequency
±0.1 ±10Input Leakage Current at OS
±0.1 ±10Input Leakage Current at COM
50 500C
L
10 1R
L
Resistive Output Load Drive
10Clock Feedthrough
75 125R
COM
Input Resistance at COM
100:1f
CLK
/f
C
Clock-to-Corner Ratio
0.001 to 2f
C
Corner Frequency
V
COM
1A
OS
OS Voltage Gain to OUT
-73THD+N
Total Harmonic Distortion
plus Noise
10Clock-to-Corner Tempco
0.25 V
DD
-
0.25Output Voltage Range
±5 ±25V
OFFSET
Output Offset Voltage
-0.1 0.15 0.3
DC Insertion Gain with
Output Offset Removed
MIN TYP MAX
SYMBOLPARAMETER
V
CLK
= 0 or 5V
0.5V
IL
Clock Input Low
V
DD
- 0.5V
IH
Clock Input High
±24 ±40I
CLK
Clock Input Current
V
V
µA
kHz
µA
µA
pF
kΩ
mVp-p
kΩ
V
V/V
dB
dB
mV
V
ppm/°C
kHz
UNITS
Maximum Capacitive Load at
OUT
COM Voltage Range
V
DD
/ 2 V
DD
/ 2 V
DD
/ 2
- 0.5 + 0.5
V
COM
±0.1V
OS
Input Voltage Range at OS V
V
DD
/ 2 V
DD
/ 2 V
DD
/ 2
- 0.2 + 0.2
FILTER CHARACTERISTICS
CLOCK
Output, COM internally biased
