ML7005 データシートの表示（PDF） - Oki Electric Industry

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ML7005

DTMF Transceiver

Oki Electric Industry 

¡ Semiconductor

ML7005

FX Detector Input Level Adjustment

Adjust the input level according to the method shown in the figure 9.

Determine the value of a usable resistor so that the output level of FXDIO is less than the

maximum detect level described in the AC Characteristics.

FXDIO

RG

C8

RF

IN

FXDIM

–

+

Gain = RG £ 10

RF

Figure 9 FX Input Level Adjustment

Processing the Input Pin when the DTMF Receiver and CPT Detector are not Used

Process the Input pin according to the method shown in the figure 10.

DTRIO

(CPDIO)

DTRIM

(CPDIM) –

+

DTRIP

(CPDIP)

SG

Figure 10 Processing the Unused Input Pin

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