Instruction Manual

MAX7426/MAX7427
5th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
_______________________________________________________________________________________ 5
-70
-60
-40
-50
-10
0
-20
-30
10
012345
FREQUENCY RESPONSE
MAX7426/27-02
INPUT FREQUENCY (kHz)
GAIN (dB)
f
C
= 1kHz
r = 1.25
Typical Operating Characteristics
(V
DD
= +5V for MAX7426, V
DD
= +3V for MAX7427, f
CLK
= 100kHz, SHDN = V
DD
, V
COM
= V
OS
= V
DD
/ 2, T
A
= +25°C, unless other-
wise noted.)
-1.0
-0.6
-0.8
0
0.2
-0.2
-0.4
0.4
0 0.2 0.4 0.6 0.8 1.0
PASSBAND FREQUENCY RESPONSE
MAX7426/27-04
INPUT FREQUENCY (kHz)
GAIN (dB)
f
C
= 1kHz
r = 1.25
-400
-350
-250
-300
-200
-150
-100
-50
0
0 0.2 0.4 0.6 0.8 1.0 1.2
PHASE RESPONSE
MAX7426/27-06
INPUT FREQUENCY (kHz)
PHASE SHIFT (DEGREES)
f
C
= 1kHz
r = 1.25
0.70
0.74
0.72
0.78
0.76
0.80
0.82
2.5 3.5 4.03.0 4.5 5.0 5.5
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX7426/27-07
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
0.68
0.72
0.70
0.76
0.74
0.80
0.78
0.82
0.86
0.84
0.88
-60 -20 0-40 20 40 60 80 100
SUPPLY CURRENT vs. TEMPERATURE
MAX7426/27-08
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
V
DD
= +5V
V
DD
= +3V