MAX7480ESA datasheet(3/8 Pages) MAXIM

3 / 8 page

8th-Order, Lowpass, Butterworth,

Switched-Capacitor Filter

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ELECTRICAL CHARACTERISTICS (continued)

(VDD = +5V, filter output measured at OUT, 10kΩ || 50pF load to GND at OUT, OS = COM, 0.1µF from COM to GND, SHDN =

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

CONDITIONS

MIN

TYP

MAX

SYMBOL

PARAMETER

Measured at DC

SHDN = GND, CLK driven from 0 to VDD

Operating mode, no load, IN = OS = COM

0.5

VSDL

SHDN Input Low

VDD - 0.5

VSDH

SHDN Input High

PSRR

Power-Supply Rejection Ratio

0.2

I SHDN

Shutdown Current

2.9

3.5

Supply Current

IDD

4.5

5.5

VDD

Supply Voltage

µA

UNITS

SHDN Input Leakage Current

V SHDN = 0 to VDD

±0.1

±10

µA

POWER REQUIREMENTS

SHUTDOWN

FILTER CHARACTERISTICS

(VDD = +5V, 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.)

Note 1: The maximum fC is defined as the clock frequency fCLK = 100 · fC at which the peak SINAD drops to 68dB with a sinusoidal

input at 0.2fC.

Note 2: DC insertion gain is defined as

∆VOUT / ∆VIN.

Note 3: OS voltages above VDD - 1V saturate the input and result in a 75µA typical input leakage current.

Note 4: fOSC (kHz) ≅ 53 · 103 / COSC (pF).

fIN = 0.5fC

-0.1

0.0

fIN = 2fC

fIN = fC

-3.5

-3.0

-2.5

Insertion Gain Relative to

DC Gain

-48

-43

fIN = 3fC

-76

-70

CONDITIONS

UNITS

MIN

TYP

MAX

PARAMETER

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