MSM7590L-01 데이터 시트보기 (PDF) - Oki Electric Industry

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MSM7590L-01

Multi-Function ADPCM CODEC

Oki Electric Industry 

¡ Semiconductor

MSM7590L-01

AC Characteristics (DTMF and Other Tones)

(VDD = 2.7 V to 3.6 V, Ta = –25°C to +70°C)

Parameter

Symbol

Condition

Min. Typ. Max. Unit

Frequency Difference

DFT1 DTMF Tones

DFT2 Other Tones

–7

—

+7

Hz

–7

—

+7

Hz

Original (reference)

Tone Signal Level

*4

VTL Transmit Tones

DTMF (Low)

–18

–16

–14 dBmO

DTMF (High)

VTH

(Gain setting 0 dB)

and Other Tones

–16

–14

–12 dBmO

VRL Receive Tones

DTMF (Low)

–10

–8

–6 dBmO

VRH

(Tone generation DTMF (High)

gain setting –6 dB) and Other Tones

–8

–6

–4 dBmO

Relative Level of

DTMF Tones

RDTMF VTH/VTL, VRH/VRL

1

2

3 dBmO

*4 Does not contain the setting value set for the programmable gain

AC Characteristics (Programmable Gain Stages)

Parameter

Symbol

Condition

(VDD = 2.7 V to 3.6 V, Ta = –25°C to +70°C)

Min. Typ. Max. Unit

Gain Accuracy

DG All gain stages, to programmed value –1

0

+1

dB

AC Characteristics (VOX Function)

Parameter

Symbol

Condition

Transmit VOX Detect Time tVXON OFF Æ ON

VOXO,

(Voice Signal ON/OFF Detect Time) tVXOF ON Æ OFF

See Fig.2

Transmit VOX Detect Level

Accuracy

DVX To the values (CR6-B6, B5)

(Threshold Level)

*5 When single tone is input at 1000 Hz

(VDD = 2.7 V to 3.6 V, Ta = –25°C to +70°C)

Min.

—

Typ. Max. Unit

10 *5 —

ms

150/310 160/320 170/330 ms

–2.5

0

+2.5 dB

15/26

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