ML7005MB Ver la hoja de datos (PDF) - Oki Electric Industry

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ML7005MB

DTMF Transceiver

Oki Electric Industry 

¡ Semiconductor

ML7005

AC Characteristics 4 FAX Signal (FX) Detector

Parameter

Symbol

Condition

(VDD = 2.7 to 5.5 V, Ta = –30 to +85°C)

Min. Typ. Max. Unit

FX Detect Amplitude

FX Non-detect Amplitude

Time to Detect

Time to Reject

FX Detect Delay Time

FX Detect Hold Time

FX Detect Frequency

FX Non-detect Frequency

VDETFX

2.7 V £ VDD £ 5.5 V

4.5 V £ VDD £ 5.5 V

–40 —

–40 —

–6

0

dBm

VREJFX fin = 1280 to 1320 Hz at FXDIO —

— –60

tDETFX

Detect

65

—

—

tREJFX

tDELFX

tHOLFX

Non-detect

See Figure 2.

—

—

30

ms

35

50

65

35

50

65

fDETFX

—

1280 — 1320 Hz

fREJFX

1380 —

—

—

Hz

—

— 1200

FXDI

FXDO

(FXDR)

tREJFX

tDETFX

tDELFX

Figure 2 FX Detect Timing

tHOLFX

10/24

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