8th-Order, Lowpass, Elliptic,

Switched-Capacitor Filters

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3

ELECTRICAL CHARACTERISTICS—MAX7400/MAX7403 (continued)

(VDD = +5V, 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.)

ELECTRICAL CHARACTERISTICS—MAX7404/MAX7407

(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.)

SHUTDOWN

POWER REQUIREMENTS

SHDN Input Leakage Current

±0.1

±10

µA

V SHDN = 0 to VDD

SHDN Input High

VSDL

0.5

V

VSDH

VDD - 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

VDD

4.5

5.5

V

Supply Current

IDD

2

3.5

mA

CONDITIONS

Measured at DC

SHDN = GND, CLK driven from 0 to VDD

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

VOFFSET

±5

±25

mV

Output Voltage Range

0.25

VDD - 0.25

V

Clock-to-Corner Tempco

10

ppm/°C

THD+N

-77

dB

MAX7407

MAX7404

-79

OS Voltage Gain to OUT

AOS

1

V/V

Input Voltage Range at OS

VOS

VCOM ±0.1

V

Corner Frequency

fC

0.001 to 10

kHz

Clock-to-Corner Ratio

fCLK/fC

100:1

VDD / 2

VDD / 2

VDD / 2

- 0.1

+ 0.1

V

COM Voltage Range

VCOM

Input Resistance at COM

RCOM

75

125

k

Ω

Clock Feedthrough

10

mVp-p

Resistive Output Load Drive

RL

10

1

k

Ω

Maximum Capacitive Load

at OUT

CL

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

VCOM = VDD / 2 (Note 2)

VIN = VCOM = VDD / 2

fIN = 200Hz, VIN = 2.5Vp-p,

measurement bandwidth = 22kHz

SHDN = GND, VCOM = 0 to VDD

(Note 1)

VOS = 0 to (VDD - 1V) (Note 3)

SHDN Input Low

V