參數(shù)資料
型號(hào): MT8888C
廠商: Mitel Networks Corporation
英文描述: Integrated DTMF Transceiver with Intel Micro Interface(雙音多頻信號(hào)(DTMF)收發(fā)器(帶Intel微接口))
中文描述: 集成雙音多頻收發(fā)器與英特爾微型接口(雙音多頻信號(hào)(DTMF)的收發(fā)器(帶英特爾微接口))
文件頁(yè)數(shù): 14/21頁(yè)
文件大?。?/td> 171K
代理商: MT8888C
MT8888C
4-102
Characteristics are over recommended operating conditions unless otherwise stated
Typical figures are at 25
°
C, V
DD
=5V, and for design aid only: not guaranteed and not subject to production testing
AC Electrical Characteristics
- DTMF Reception -
Typical DTMF tone accept and reject requirements. Actual
values are user selectable as per Figures 5, 6 and 7.
Characteristics are over recommended operating conditions unless otherwise stated
Typical figures are at 25
°
C, V
DD
=5V, and for design aid only: not guaranteed and not subject to production testing
AC Electrical Characteristics
- Voltages are with respect to ground (V
SS
), unless otherwise stated.
Timing is over recommended temperature & power supply voltages.
Typical figures are at 25
°
C and for design aid only: not guaranteed and not subject to production testing.
AC Electrical Characteristics
- Call Progress -
Voltages are with respect to ground (V
SS
), unless otherwise stated.
Characteristics
Sym
Min
Typ
Max
Units
Conditions
1
Accept Bandwidth
f
A
310
500
Hz
@ -25 dBm,
Note 9
2
Lower freq. (REJECT)
f
LR
f
HR
290
Hz
@ -25 dBm
3
Upper freq. (REJECT)
540
Hz
@ -25 dBm
4
Call progress tone detect level (total
power)
-30
dBm
Characteristics
Sym
Min
Typ
Max
Units
Conditions
1
Minimum tone accept duration
t
REC
t
REC
t
ID
t
OD
40
ms
2
Maximum tone reject duration
20
ms
3
Minimum interdigit pause duration
40
ms
4
Maximum tone drop-out duration
20
ms
Characteristics
Sym
Min
Typ
Max
Units
Conditions
1
T
O
N
E
I
N
Tone present detect time
t
DP
t
DA
t
PStb3
t
PStRX
3
11
14
ms
Note 11
2
Tone absent detect time
0.5
4
8.5
ms
μ
s
μ
s
Note 11
3
Delay St to b3
13
See Figure 7
4
Delay St to RX
0
-RX
3
8
See Figure 7
5
T
O
N
E
O
U
T
Tone burst duration
t
BST
t
PS
t
BSTE
t
PSE
V
HOUT
V
LOUT
dB
P
THD
50
52
ms
DTMF mode
6
Tone pause duration
50
52
ms
DTMF mode
7
Tone burst duration (extended)
100
104
ms
Call Progress mode
8
Tone pause duration (extended)
100
104
ms
Call Progress mode
R
L
=10k
R
L
=10k
R
L
=10k
25 kHz Bandwidth
R
L
=10k
f
C
=3.579545 MHz
9
High group output level
-6.1
-2.1
dBm
10
Low group output level
-8.1
-4.1
dBm
11
Pre-emphasis
0
2
3
dB
12
Output distortion (Single Tone)
-35
dB
13
14
Frequency deviation
f
D
R
LT
f
C
t
CLRF
DC
CL
C
LO
±
0.7
±
1.5
50
%
k
MHz
15
Output load resistance
10
16
X
T
A
L
Crystal/clock frequency
3.5759
3.5795
3.5831
17
Clock input rise and fall time
110
ns
Ext. clock
18
Clock input duty cycle
40
50
60
%
Ext. clock
19
Capacitive load (OSC2)
30
pF
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