8th-Order, Lowpass, Elliptic,

Switched-Capacitor Filters

4

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ELECTRICAL CHARACTERISTICS—MAX7404/MAX7407 (continued)

(VDD = +3V, filter output measured at OUT, 10kΩ || 50pF load to GND at OUT, SHDN = VDD, OS = COM, 0.1µF from COM to GND,

fCLK = 100kHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)

ELLIPTIC (r = 1.5) FILTER CHARACTERISTICS—MAX7400/MAX7404

(VDD = +5V for MAX7400, VDD = +3V for MAX7404; filter output measured at OUT; 10kΩ || 50pF load to GND at OUT; SHDN = VDD;

VCOM = VOS = VDD / 2; fCLK = 100kHz; TA = TMIN to TMAX; unless otherwise noted. Typical values are at TA = +25°C.)

VCLK = 0 or 3V

COSC = 1000pF (Note 4)

V

CONDITIONS

VDD - 0.5

VIH

µA

±15

±30

ICLK

Clock Input Current

kHz

26

34

43

fOSC

Internal Oscillator Frequency

0.5

VIL

Clock Input High

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

SHDN = GND, CLK driven from 0 to VDD

Operating mode, no load, IN = OS = COM

Measured at DC

µA

0.2

1

I SHDN

mA

2

3.5

IDD

Supply Current

V

2.7

3.6

VDD

Supply Voltage

60

PSRR

Shutdown Current

Power-Supply Rejection Ratio

dB

VDD - 0.5

VSDH

SHDN Input High

V

V SHDN = 0 to VDD

±0.1

±10

SHDN Input Leakage Current

µA

VSDL

0.5

Clock Input Low

SHDN Input Low

V

V

CLOCK

POWER REQUIREMENTS

SHUTDOWN

dB

CONDITIONS

UNITS

MIN

TYP

MAX

PARAMETER

fIN = 0.371fC

-0.20

-0.10

0.20

fIN = 0.737fC

fIN = 0.587fC

-0.20

-0.08

0.20

-0.20

0.02

0.20

fIN = 0.940fC

fIN = 0.868fC

-0.20

-0.03

0.20

fIN = 1.000fC

fIN = 0.988fC

-0.20

0.02

0.25

-0.20

0.09

0.25

-0.20

0.06

0.20

fIN = 1.601fC

fIN = 1.500fC

-84

-78

fIN = 4.020fC

fIN = 2.020fC

-85

-78

Insertion Gain Relative to DC Gain

(Note 5)

-83

-78

-82

-75