ML7005 datasheet(11/26 Pages) ETC2

11 / 26 page

FEDL7005-01

ML7005

11/25

AC Characteristics 5 DTMF Receiver

(VDD=+2.7 to +5.5 V, Ta=-30 to +85°C)

Parameter

Symbol

Condition

Min.

Typ.

Max.

Unit

VDETDT1

2.7V

 VDD  5.5V

-42

—

-10

DTMF Detect

Amplitude

VDETDT2

4.5V

 VDD  5.5V

-42

—

DTMF Non-detect

Amplitude ル

VREJFX

Per Frequency at DTRIO

—

-60

dBm

Detect Frequency

fDETDT

-1.8

—

+1.8

+3.8

—

Non-detect

Frequency

fREJDT

To Nominal Frequency

—

-3.8

Level Twist

VTWIST

VHigh Group - VLow Group

-6.0

—

+6.0

Noise to Signal

Ratio

VNIS

N/S(N：0.3 to 3.4kHz)

—

-12

—

Dial Tone Rejection

Ratio

VREJDT

360 to 440Hz

—

tCYCDT0

DTTIM="1"

—

Signal Repetition

Time

tCYCDT1

DTTIM="0"

—

tDETDT0

DTTIM="1"

—

Time to Detect

tDETDT1

Detect

DTTIM="0"

—

tREJDT0

DTTIM="1"

—

Time to Reject

tREJDT1

Non-detect

DTTIM="0"

—

tPOSDT0

DTTIM="1"

—

Interdigit Pause

Time

tPOSDT1

DTTIM="0"

—

tBRKDT10

DTTIM="1"

—

0.4

tBRKDT11

SPB="1"

(Before output)

DTTIM="0"

—

0.4

tBRKDT20

DTTIM="1"

—

Acceptable Drop

Out Time

tBRKDT21

SPB="0"

(During output)

DTTIM="0"

—

tDELDT0

DTTIM="1"

Detect Delay Time

tDELDT1

DTTIM="0"

tHOLDT0

DTTIM="1"

Detect Hold Time

tHOLDT1

DTTIM="0"

SPB Delay Time

tSP

DTTIM="1", "0"

0.2

0.6

1.0

*1 See the figure 3 for timing.

The input level includes the entire range indicated in VDETDT1 and VDETDT2.

The input frequency includes the entire range indicated in fDETDT.

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