MAX7421CUA+ Maxim Integrated Products, MAX7421CUA+ Datasheet - Page 5

• Manufacturer Part Number: MAX7421CUA+
• Description: IC FILTER LOWPASS 5TH 8UMAX
• Manufacturer: Maxim Integrated Products

Specifications of MAX7421CUA+

• Filter Type: Elliptic, Lowpass Switched Capacitor
• Frequency - Cutoff Or Center: 45kHz
• Number Of Filters: 1
• Max-order: 5th
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• For Use With: MAXFILTERBRD+ - BOARD EVAL MAX7408/7415/418-7425
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FILTER CHARACTERISTICS
(V
OUT, SHDN = V
Note 1: The maximum f
Note 2: DC insertion gain is defined as ΔV
Note 3: MAX7418/MAX7421/MAX7422/MAX7425: f
Note 4: PSRR is the change in output voltage from a V
ELLIPTIC, R = 1.2—MAX7421/MAX7425
BESSEL FILTERS—MAX7419/MAX7423
BESSEL FILTERS—MAX7419/MAX7423
BESSEL FILTERS—MAX7409/MAX7413
BUTTERWORTH FILTERS—MAX7420/MAX7424
Insertion Gain with DC Gain
Error Removed (Note 4)
Insertion Gain Relative to
DC Gain
Insertion Gain Relative to
DC Gain
Insertion Gain Relative to
DC Gain
DD
= +5V for MAX7418-MAX7420, V
sinusoidal input at 0.2f
MAX7419/MAX7420/MAX7423/MAX7424: f
PARAMETER
DD
, f
CLK
_______________________________________________________________________________________
C
= 2.2MHz, T
is defined as the clock frequency f
C
. Maximum f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
A
DD
= f
= 4f
= 4f
= 7f
= f
= 3f
= T
= 0.38f
= 0.68f
= 0.87f
= 0.97f
= f
= 1.25f
= 1.43f
= 3.25f
= 0.5f
= 7f
= 0.5f
= 7f
= 0.5f
= 5f
= +3V for MAX7422-MAX7425 filter output measured at OUT, 10kΩ
C
C
C
MIN
C
C
C
C
OUT
C
C
C
C
C
C
C
C
C
C
C
C
C
C
to T
increases as V
/ ΔV
MAX
IN
OSC
OSC
.
, unless otherwise noted.)
DD
(kHz) ≅ 87x10
(kHz) ≅ 110x10
CONDITIONS
of 4.5V and a V
Switched-Capacitor Filters
CLK
IN
signal amplitude decreases.
= 100 x f
3
3
/ C
/ C
DD
C
OSC
at which the peak S / (THD+N) drops to 68dB with a
OSC
of 5.5V.
5th-Order, Lowpass,
(pF).
(pF).
MIN
-0.4
-0.4
-0.4
-0.4
-0.7
-3.6
-1.0
-3.6
-0.3
-3.6
-1
-37.2
-37.2
-0.74
-41.0
-0.74
-41.0
-47.5
TYP
-0.2
-0.2
-0.2
-0.2
-0.2
-3.0
-3.0
-3.0
-36
-67
-67
-70
0
||
50pF load to GND at
MAX
-2.4
-2.4
-2.4
-33
-35
-35
-35
-60
-35
-60
-43
-65
0.4
0.4
0.4
0.4
0.2
UNITS
dB
dB
dB
dB
5