Datasheet

MAX7408/MAX7411/MAX7412/MAX7415
5th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
4 _______________________________________________________________________________________
C
OSC
= 1000pF (Note 3)
CONDITIONS
19 27 34f
OSC
Internal Oscillator Frequency
MIN TYP MAXSYMBOLPARAMETER
Measured at DC
SHDN = GND
Operating mode, no load
V
CLK
= 0 or 3V
0.5V
SDL
SHDN Input Low
2.5V
SDH
SHDN Input High
70PSRRPower-Supply Rejection Ratio
0.2 1I
SHDN
Shutdown Current
1.13 1.5
2.7 3.6V
DD
Supply Voltage
0.5V
IL
Clock Input Low
2.5V
IH
Clock Input High
±12 ±20I
CLK
Clock Output Current
(Internal Oscillator Mode)
V
V
dB
µA
V
V
V
µA
kHz
UNITS
SHDN Input Leakage Current
V
SHDN
= 0 to V
DD
±0.2 ±10 µA
ELECTRICAL CHARACTERISTICS—MAX7412/MAX7415 (continued)
(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.)
mA
I
DD
Supply Current
ELLIPTIC FILTER (r = 1.6) CHARACTERISTICS—MAX7408/MAX7412
(V
DD
= +5V for MAX7408, V
DD
= +3V for MAX7412; filter output measured at OUT; 10kΩ || 50pF load to GND at OUT; SHDN = V
DD
;
V
COM
= V
OS
=V
DD
/ 2; f
CLK
= 100kHz; T
A
= T
MIN
to T
MAX
; unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 3)
f
IN
= 0.63f
C
f
IN
= 0.34f
C
f
IN
= 4.62f
C
f
IN
= 1.90f
C
f
IN
= 1.60f
C
f
IN
= 0.84f
C
f
IN
= 0.96f
C
f
IN
= f
C
CONDITIONS
-0.4 0.2 0.4
dB
-0.4 -0.2 0.4
Insertion Gain
with DC Gain Error Removed
(Note 4)
-53.4 -50
-53.4 -50
-53.4 -50
-0.4 -0.2 0.4
-0.4 0.2 0.4
-0.7 -0.2 0.2
UNITSMIN TYP MAXPARAMETER
CLOCK
POWER REQUIREMENTS
SHUTDOWN