SC91650A データシートの表示（PDF） - Silan Microelectronics

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SC91650A

13 MEMORY TONE / PULSE DIALER WITH REDIAL SAVE HANDFREE & HOLD FUNCTION

Silan Microelectronics 

Silan

Semiconductors

SC91650/1/2 A/B

Note: 1. Dist. (dB)=20log{[V12+V22+V32+…Vn2)1/2]/[(VL2+VH2)1/2]}

a. V1…Vn are extraneous frequencies (ie, inter modulation and harmonic), components in the 500Hz

to 3400Hz band.

b. VL,VH are the individual frequency components of DTMF signal.

c. Whether keyboard is pushed refer to the TONE mode time diagram.

2. Sink current Isink=I/(1-Duty Cycle), I is the net DC current measured from ampere meter.

3. R*, C* mean other column and row.

TIMING DIAGRAMS

HKS

KEY IN

XMUTE

**PO

TONE

OSCO

3

2

3

tDB

tTD

tITP

tITP

tITP

Normal dialing

Tone Mode Timming Diagram

......High impedance

HKS

KEY IN

PMUTE

XMUTE

**PO

TONE

OSCO

3

2

3

tDB

tPDP

tB

tM

tTD

tIDP

tIDP

tIDP

Normal dialing

......High impedance

Pusle Mode Timming Diagram

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.0

2001.01.15

17

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