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M
8th-Order, Lowpass, Elliptic ,
S witc hed-Capac itor Filters
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
V
DD
to GND
MAX7400/MAX7403 ..............................................-0.3V to +6V
MAX7404/MAX7407 ..............................................-0.3V to +4V
IN, OUT, COM, OS, CLK ............................-0.3V to (V
DD
+ 0.3V)
SHDN
........................................................................-0.3V to +6V
OUT Short-Circuit Duration...................................................1sec
ELECTRICAL CHARACTERISTICS—MAX7400/MAX7403
(V
DD
= +5V, filter output measured at OUT, 10k
||50pF load to GND at OUT,
SHDN
= V
DD
, OS = COM, 0.1μF from COM to GND,
f
CLK
= 100kHz, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at +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.
Continuous Power Dissipation (T
A
= +70°C)
SO (derate 5.88mW/°C above +70°C)..........................471mW
DIP (derate 9.1mW/°C above +70°C)...........................727mW
Operating Temperature Ranges
MAX740_C_A .....................................................0°C to +70°C
MAX740_E_A ..................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
V
OS
= 0 to (V
DD
- 1V) (Note 3)
(Note 1)
SHDN
= GND, V
COM
= 0 to V
DD
V
IN
= V
COM
= V
DD
/ 2
Output, COM internally biased
V
COM
= V
DD
/ 2 (Note 2)
Input, COM externally driven
CONDITIONS
μA
±0.1
±10
Input Leakage Current at OS
CLOCK
μA
±0.1
±10
Input Leakage Current at COM
pF
50
500
C
L
Maximum Capacitive Load
at OUT
k
10
1
R
L
Resistive Output Load Drive
mVp-p
10
Clock Feedthrough
k
75
125
R
COM
Input Resistance at COM
V
DD
/ 2
- 0.2
V
DD
/ 2
V
DD
/ 2
+ 0.2
V
COM
COM Voltage Range
V
V
DD
/ 2
- 0.5
V
DD
/ 2
V
DD
/ 2
+ 0.5
100:1
10
f
CLK
/f
C
Clock-to-Corner Ratio
Clock-to-Corner Tempco
Output Voltage Range
Output Offset Voltage
kHz
0.001 to 10
f
C
Corner Frequency
V
V
COM
±0.1
V
OS
Input Voltage Range at OS
-82
-80
1
ppm/°C
V
mV
0.25
V
DD
- 0.25
±25
±5
V
OFFSET
dB
-0.1
0.15
0.3
DC Insertion Gain with
Output Offset Removed
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
C
OSC
= 1000pF (Note 4)
V
CLK
= 0 or 5V
kHz
μA
V
V
29
38
±15
48
±30
f
OSC
I
CLK
V
IH
V
IL
Internal Oscillator Frequency
Clock Input Current
Clock Input High
Clock Input Low
V
DD
- 0.5
0.5
f
IN
= 200Hz, V
IN
= 4Vp-p,
measurement bandwidth = 22kHz
dB
THD+N
Total Harmonic Distortion
plus Noise
MAX7400
MAX7403
V/V
A
OS
OS Voltage Gain to OUT
FILTER CHARACTERISTICS
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