MAX7412EUA View Datasheet(PDF) - Maxim Integrated

Part Name

Description

MFG CO.

MAX7412EUA

5th-Order, Lowpass, Elliptic, Switched-Capacitor Filters

Maxim Integrated 

5th-Order, Lowpass, Elliptic,

Switched-Capacitor Filters

ELLIPTIC FILTER (r = 1.25) CHARACTERISTICS—MAX7411/MAX7415

(VDD = +5V for MAX7411, VDD = +3V for MAX7415; 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 3)

PARAMETER

Insertion Gain

with DC Gain Error Removed

(Note 4)

fIN = 0.38fC

fIN = 0.68fC

fIN = 0.87fC

fIN = 0.97fC

fIN = fC

fIN = 1.25fC

fIN = 1.43fC

fIN = 3.25fC

CONDITIONS

MIN

TYP MAX UNITS

-0.4

-0.2

0.4

-0.4

0.2

0.4

-0.4

-0.2

0.4

-0.4

0.2

0.4

dB

-0.7

-0.2

0.2

-38.5

-34

-37.2

-35

-37.2

-35

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: fOSC (kHz) ≈ 27 · 103 / COSC (COSC in pF).

Note 4: The input frequencies, fIN, are selected at the peaks and troughs of the ideal elliptic frequency responses.

Typical Operating Characteristics

(VDD = +5V for MAX7408/MAX7411, VDD = +3V for MAX7412/MAX7415; fCLK = 100kHz; SHDN = VDD; VCOM = VOS = VDD / 2;

TA = +25°C; unless otherwise noted.)

MAX7408/MAX7412

FREQUENCY RESPONSE

20

fC = 1kHz

0

r = 1.6

MAX7411/MAX7415

FREQUENCY RESPONSE

20

fC = 1kHz

0

r = 1.25

MAX7408/MAX7412

PASSBAND FREQUENCY RESPONSE

0.2

0

-20

-20

-0.2

-40

-40

-0.4

-60

-60

-0.6

-80

-100

-120

0

1

2

3

4

5

INPUT FREQUENCY (kHz)

-80

-100

-120

0

1

2

3

4

5

INPUT FREQUENCY (kHz)

-0.8

-1.0 fC = 1kHz

r = 1.6

-1.2

0

204 408 612 816 1.02k

INPUT FREQUENCY (Hz)

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