MAX7426/MAX7427
5th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
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5th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
ELECTRICAL CHARACTERISTICS—MAX7426 (continued)
(V
DD
= +5V, filter output measured at OUT, 10kΩ
|| 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 T
A
= +25°C.)
ELECTRICAL CHARACTERISTICS—MAX7427
(V
DD
= +3V, filter output measured at OUT pin, 10kΩ || 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 T
A
= +25°C.)
CONDITIONS
MIN TYP MAXSYMBOLPARAMETER
Measured at DC
SHDN = GND
Operating mode, no load
0.5V
SDL
SHDN Input Low
4.5V
SDH
SHDN Input High
70PSRRPower-Supply Rejection Ratio
0.2 1I
SHDN
Shutdown Current
0.8 1.0Supply Current I
DD
4.5 5.5V
DD
Supply Voltage
V
V
dB
µA
mA
V
UNITS
SHDN Input Leakage Current
V
SHDN
= 0 to V
DD
±0.2 ±10 µA
V
OS
Input Voltage Range at OS
90 130R
COM
Input Resistance at COM kΩ
(Note 1)
T
A
= +25°C
Measured with respect to COM
OS to OUT
f
IN
= 200Hz, V
IN
= 2.5Vp-p,
measurement bandwidth = 22kHz
V
IN
= V
COM
= V
DD
/ 2
V
COM
= V
DD
/ 2 (Note 2)
CONDITIONS
50 500C
L
10 1R
L
Resistance Output Load Drive
3Clock Feedthrough
±0.1
V
DD
- 0.1
V
DD
V
DD
+ 0.1
2 2 2
V
COM
COM Voltage Range
100:1f
CLK
/
f
C
Clock-to-Corner Ratio
0.001 to 12f
C
Corner-Frequency Range
+1A
OS
Offset Voltage Gain
-79THD+N
Total Harmonic Distortion plus
Noise
10Clock-to-Corner Tempco
0.25 V
DD
- 0.25Output Voltage Range
±4 ±25V
OFFSET
Output Offset Voltage
0 0.2 0.4
DC Insertion Gain with Output
Offset Removed
MIN TYP MAXSYMBOLPARAMETER
pF
kΩ
mVp-p
V
V
V/V
dB
dB
mV
V
ppm/°C
kHz
UNITS
Maximum Capacitive Load
at OUT
Input Leakage Current at COM
SHDN = GND, V
COM
= 0 to V
DD
±0.2 ±10 µA
Input Leakage Current at OS V
OS
= 0 to V
DD
±0.2 ±10 µA
POWER REQUIREMENTS
SHUTDOWN
FILTER CHARACTERISTICS
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