SC9302H 데이터 시트보기 (PDF) - Silan Microelectronics
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SC9302H Datasheet PDF : 39 Pages
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Silan
Semiconductors
SC9302 Series
TONE MODE ELECTRICAL CHARACTERISTICS
(Tamb=25°C, fosc=3.5795MHz,unless otherwise specified)
Parameter
DTMF Output DC Level
DTMF Sink Current
DTMF Output AC Level
DTMF Output Load
Column Pre-emphasis
Tone Signal Distortion
Minimum Tone Duration
Minimum Inter-tone Pause
Symbol
VTDC
ITOL
VTAC
RL
ACR
THD
TTMIN
TITPM
Test Conditions
VDD
Condition
--
--
2.5V VDTMF =0.5V
-- Row group, RL =5kΩ
2.5V THD ≤ -23dB
2.5V Row group = 0dB
2.5V RL =5kΩ
Others
-- Auto-redial
9302G
Others
-- Auto-redial
9302G
Min Typ
0.45VDD --
0.1
--
0.12 0.155
5
--
1
2
--
-30
--
82.5
--
100
--
85.5
--
106
Max Unit
0.7VDD V
-- mA
0.18 Vrms
--
kΩ
3
dB
-23 dB
--
ms
--
--
ms
--
THD (Distortion)(dB)=20log ( V12 + V22 + ...+ Vn2 / Vi2 + Vh2 )
Vi, Vh: Row group and column group signals
V1,V2, …Vn: Harmonic signals (BW=300Hz~3500Hz)
APPROXIMATE INTERNAL CONNECTION CIRCUITS
CMOS IN/OUT
VDD
NMOS OUT
CMOS IN
CMOS OUT
VDD
CMOS IN
Pull-High
VDD
CMOS IN
Pull-Low
X1
20pF
OSCILLATOR
10MΩ
X2
10pF
EN
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0 2001-11-01
8
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