ML7020 데이터 시트보기 (PDF) - Oki Electric Industry

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ML7020

1200 bps MODEM for Remote Control Systems

Oki Electric Industry 

1Semiconductor

FEDL7020-02

ML7020

R1

Terminal→

TIO

C1 R2

Input amplifier 1

TI–

TI+

SGO

Line 1→

LI1O

R3

C2 R4 Input amplifier 2

LI1–

Line 2→

LI2O

R5

C3 R6 Input amplifier 3

LI2–

Example: The cutoff

frequency is fc = 10 kHz,

when R1 = R2 = 30 kΩ

(gain = 1), and C1 is 500 pF

VREF

Example: The cutoff

frequency is fc = 10 kHz,

when R3 = R4 = 30 kΩ

(gain = 1), and C2 is 500 pF

Example: The cutoff

frequency is fc = 10 kHz,

when R5 = R6 = 30 kΩ

(gain = 1), and C3 is 500 pF

Figure 1 Input amplifier 1 to 3 interface

Output amplifier 2

600 Ω

LO–

(–10.0 dBm)

0.022 µF

600 Ω: 600 Ω

–10.0 dBm

(–10.0 dBm)

LO+

Output amplifier 3

(When the transformer loss is 0 dB)

Figure 2 Output amplifier 2, 3 interface example

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