Rainbow-electronics MAX7491 Bedienungsanleitung PDF herunterladen (Seite 3)

MAX7490/MAX7491

Dual Universal Switched-Capacitor Filters

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PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Clock Input Low 0.5 V

Clock Duty Cycle 50 ± 5%

SHDN AND EXTCLK

Input High V

- 0.5 V

Input Low V

0.5 V

Input Leakage Current V

INPUT

= 0 to V

±0.4 ±10 µA

POWER REQUIREMENTS

Supply Voltage V

4.5 5.5 V

Power-Supply Current I

No external load, mode 1, R1 = R3 = 50kΩ,

R2 = 10kΩ, Q = 5

3.5 4.0 mA

Shutdown Current I

SHDN

SHDN = GND 1 µA

INTERNAL OP AMPS CHARACTERISTICS

Output Short-Circuit Current ±18 mA

DC Open-Loop Gain R

≥ 10kΩ, C

≤ 50pF 130 dB

Gain Bandwidth Product GBW R

≥ 10kΩ, C

≤ 50pF 7 MHz

Slew Rate SR R

≥ 10kΩ, C

≤ 50pF 6.4 V/µs

ELECTRICAL CHARACTERISTICS—MAX7490 (continued)

= EXTCLK = +5V, f

CLK

= 625kHz, T

= T

MIN

to T

MAX

, 10kΩ || 50pF load to V

/2 at LP_, BP_, and N_/HP_, SHDN = V

, 0.1µF

from COM to GND, 50% duty-cycle clock input, COM = V

/2. Typical values are at T

= +25°C, unless otherwise noted.) (Note 1)

1 2 3 4 5 6 7 8 ... 17 18

MAX7490/MAX7491 1

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