8th-Order, Lowpass, Elliptic,

Switched-Capacitor Filters

2

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—MAX7400/MAX7403

(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 +25°C.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

VDD to GND

MAX7400/MAX7403 ..............................................-0.3V to +6V

MAX7404/MAX7407 ..............................................-0.3V to +4V

IN, OUT, COM, OS, CLK ............................-0.3V to (VDD + 0.3V)

SHDN........................................................................-0.3V to +6V

OUT Short-Circuit Duration...................................................1sec

Continuous Power Dissipation (TA = +70°C)

SO (derate 5.88mW/°C above +70°C) ..........................471mW

DIP (derate 9.1mW/°C above +70°C) ...........................727mW

Operating Temperature Ranges

MAX740_C_A .....................................................0°C to +70°C

MAX740_E_A ..................................................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10sec) .............................+300°C

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

(Note 1)

SHDN = GND, VCOM = 0 to VDD

VIN = VCOM = VDD / 2

Output, COM internally biased

VCOM = VDD / 2 (Note 2)

Input, COM externally driven

CONDITIONS

µA

±0.1

±10

Input Leakage Current at OS

µA

±0.1

±10

Input Leakage Current at COM

pF

50

500

CL

Maximum Capacitive Load

at OUT

k

Ω

10

1

RL

Resistive Output Load Drive

mVp-p

10

Clock Feedthrough

k

Ω

75

125

RCOM

Input Resistance at COM

VDD / 2

VDD / 2

VDD / 2

- 0.2

+ 0.2

VCOM

COM Voltage Range

V

VDD / 2

VDD / 2

VDD / 2

- 0.5

+ 0.5

100:1

fCLK/fC

Clock-to-Corner Ratio

kHz

0.001 to 10

fC

Corner Frequency

V

VCOM ±0.1

VOS

Input Voltage Range at OS

-82

ppm/°C

10

Clock-to-Corner Tempco

V

0.25

VDD - 0.25

Output Voltage Range

mV

±5

±25

VOFFSET

Output Offset Voltage

dB

-0.1

0.15

0.3

DC Insertion Gain with

Output Offset Removed

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

COSC = 1000pF (Note 4)

kHz

29

38

48

fOSC

Internal Oscillator Frequency

VCLK = 0 or 5V

µA

±15

±30

ICLK

Clock Input Current

VDD - 0.5

VIH

V

0.5

VIL

Clock Input High

fIN = 200Hz, VIN = 4Vp-p,

measurement bandwidth = 22kHz

dB

-80

THD+N

Total Harmonic Distortion

plus Noise

MAX7400

MAX7403

V/V

1

AOS

OS Voltage Gain to OUT

Clock Input Low

V

FILTER CHARACTERISTICS

CLOCK