參數(shù)資料
型號: MB89898PF
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP100
封裝: PLASTIC, QFP-100
文件頁數(shù): 30/45頁
文件大小: 453K
代理商: MB89898PF
MB89890 Series
36
(8) Electrical Characteristics of DTMF Generator
(AVSS = VSS = 0.0 V, TA = –20
°C to +85°C)
Parameter
Symbol
Condition
Value
Unit
Remarks
Min
Typ
Max
Operating voltage range
2.5
5.0
6.0
V
Output load requirements
RO
VCC = 2.5 V to 6.0 V
20
k
Defined when
the DTMF pin
is connected to
a pull-down re-
sistor.
DTMF output offset voltage
(at signal output)
VMOF
VCC = 5.0 V
0.4
V
When the
DTMF pin is
open.
RO = 200 k
DTMF output amplitude
(ROW single tone)
VMFOR
VCC = 5.0 V
–16.3
–14.0
–12.5
dBm
Difference between
COLUMN and ROW levels
RMF
—1.6
2.0
2.4
dB
Distortion ratio
7
%
VCC
VSS
X0
X1
0.1
F
8 MHz
Lowpass filter
16.0 kHz
Audio analizer
Output level
RO
–48 dB/oct
DTMF
Output Level Measurement Circuit
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