參數(shù)資料
型號: HCD404669
廠商: Hitachi,Ltd.
英文描述: Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit(帶雙音多頻電路的低電壓微計算機)
中文描述: 低電壓如同在微機芯片的DTMF產(chǎn)生電路(帶雙音多頻電路的低電壓微計算機)
文件頁數(shù): 132/142頁
文件大?。?/td> 894K
代理商: HCD404669
HD404669 Series
132
DTMF Characteristics (HD404668, HD4046612, HD404669, HD40A4668, HD40A46612,
HD40A4669: V
= 1.8 to 5.5 V, GND = 0 V, T
a
= –20
°
C to +75
°
C; HCD404669: V
= 1.8 to 5.5 V,
GND = 0 V, T
a
= +75
°
C; HD407A4669: V
CC
= 2.2 to 5.5 V, GND = 0 V, T
a
= –20
°
C to +75
°
C, unless
otherwise specified)
Item
Symbol
Pin
Min
Typ
Max
Unit
Test Condition
Notes
Tone output
voltage (1)
V
OR
TONER
500
660
mV
r ms
VT
ref
– GND = 2.0 V,
R
L
= 100 k
,
V
CC
= 2.2 to 5.0V
1
Tone output
voltage (2)
V
OC
TONEC
520
690
mV
r ms
VT
ref
– GND = 2.0 V,
R
L
= 100 k
,
V
CC
= 2.2 to 5.0V
1
Tone output
distortion
%DIS
3
7
%
Short circuit
between TONER
and TONEC,
R
L
= 100 k
2
Tone output
ratio
dB
CR
2.5
dB
Short circuit
between TONER
and TONEC,
R
L
= 100 k
2
Notes: These characteristics are guaranteed with an operating frequency, f
OSC
, of 400 kHz, 800 kHz, 2 MHz,
3.58 MHz, 4 MHz, 7.16 MHz, or 8 MHz.
1. See figure 89.
2. See figure 90.
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