Datasheet

MAX7400/MAX7403/MAX7404/MAX7407
8th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
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ELECTRICAL CHARACTERISTICS—MAX7400/MAX7403 (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—MAX7404/MAX7407
(V
DD
= +3V, 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.)
SHUTDOWN
POWER REQUIREMENTS
SHDN Input Leakage Current
±0.1 ±10 µAV
SHDN
= 0 to V
DD
SHDN Input High
V
SDL
0.5
VV
SDH
V
DD
- 0.5
PARAMETER SYMBOL MIN TYP MAX UNITS
Power-Supply Rejection Ratio PSRR 60 dB
Shutdown Current I
SHDN
0.2 1 µA
Supply Voltage V
DD
4.5 5.5 V
Supply Current I
DD
2 3.5 mA
CONDITIONS
Measured at DC
SHDN = GND, CLK driven from 0 to V
DD
Operating mode, no load, IN = OS = COM
FILTER CHARACTERISTICS
Total Harmonic Distortion
plus Noise
PARAMETER SYMBOL MIN TYP MAX UNITS
DC Insertion Gain with Output
Offset Removed
-0.1 0.1 0.3 dB
Output Offset Voltage V
OFFSET
±5 ±25 mV
Output Voltage Range 0.25 V
DD
- 0.25 V
Clock-to-Corner Tempco 10 ppm/°C
THD+N
-77
dB
MAX7407
MAX7404 -79
OS Voltage Gain to OUT A
OS
1 V/V
Input Voltage Range at OS V
OS
V
COM
±0.1 V
Corner Frequency f
C
0.001 to 10 kHz
Clock-to-Corner Ratio f
CLK
/f
C
100:1
V
DD
/ 2
V
DD
/ 2
V
DD
/ 2
- 0.1 + 0.1
VCOM Voltage Range V
COM
Input Resistance at COM R
COM
75 125 kΩ
Clock Feedthrough 10 mVp-p
Resistive Output Load Drive R
L
10 1 kΩ
Maximum Capacitive Load
at OUT
C
L
50 500 pF
Input Leakage Current at COM ±0.1 ±10 µA
Input Leakage Current at OS ±0.1 ±10 µA
CONDITIONS
COM internally biased or externally driven
V
COM
= V
DD
/ 2 (Note 2)
V
IN
= V
COM
= V
DD
/ 2
f
IN
= 200Hz, V
IN
= 2.5Vp-p,
measurement bandwidth = 22kHz
SHDN = GND, V
COM
= 0 to V
DD
(Note 1)
V
OS
= 0 to (V
DD
- 1V) (Note 3)
SHDN Input Low
V