MT8885 Mitel Networks Corporation, MT8885 Datasheet - Page 16

• Manufacturer Part Number: MT8885
• Description: Integrated DTMFTransceiver with Power Down & Adaptive Micro Interface
• Manufacturer: Mitel Networks Corporation

MT8885
† Characteristics are over recommended operating conditions unless otherwise stated
‡ Typical figures are at 25°C, V
† Characteristics are over recommended operating conditions unless otherwise stated
‡ Typical figures are at 25°C, V
† 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.
4-66
AC Electrical Characteristics
AC Electrical Characteristics
values are user selectable as per Figures 5, 6 and 7.
AC Electrical Characteristics
10
11
12
13
14
15
16
17
18
19
1
2
3
4
1
2
3
4
1
2
3
4
5
6
7
8
9
Accept Bandwidth
Lower freq. (REJECT)
Upper freq. (REJECT)
Call progress tone detect level (total
power)
Minimum tone accept duration
Maximum tone reject duration
Minimum interdigit pause duration
Maximum tone drop-out duration
O
N
E
N
O
N
E
O
U
X
A
T
T
T
T
L
I
Tone present detect time
Tone absent detect time
Delay St to b3
Delay St to RX
Tone burst duration
Tone pause duration
Tone burst duration (extended)
Tone pause duration (extended)
High group output level
Low group output level
Pre-emphasis
Output distortion (Single Tone)
Frequency deviation
Output load resistance
Crystal/clock frequency
Clock input rise and fall time
Clock input duty cycle
Capacitive load (OSC2)
Characteristics
Characteristics
Characteristics
DD
DD
0
-RX
=5V, and for design aid only: not guaranteed and not subject to production testing
=5V, and for design aid only: not guaranteed and not subject to production testing
3
†
†
† - Voltages are with respect to ground (V
- Call Progress -
- DTMF Reception -
V
V
t
DC
t
t
Sym
t
THD
PStRX
dBP
PStb3
t
BSTE
CLRF
C
R
t
HOUT
t
t
t
LOUT
BST
PSE
f
DP
DA
f
PS
D
C
LO
LT
CL
Sym
Sym
t
t
f
t
f
REC
REC
t
f
HR
OD
LR
ID
A
3.5759 3.5795 3.5831
Min
100
100
-6.1
-8.1
0.5
50
50
10
40
3
0
Voltages are with respect to ground (V
Min
310
Min
-30
Typical DTMF tone accept and reject requirements. Actual
Typ
±0.7
-35
13
50
11
4
8
2
Typ
Typ
290
540
40
20
40
20
‡
SS
‡
‡
), unless otherwise stated.
Max
±1.5
104
104
-2.1
-4.1
110
8.5
14
52
52
50
60
30
Max
Max
500
3
Units
dBm
dBm
MHz
Units
Units
Advance Information
dBm
ms
ms
ms
ms
ms
ms
k
dB
dB
pF
µs
µs
ns
%
%
Hz
Hz
Hz
ms
ms
ms
ms
SS
Note 11
Note 11
See Figure 7
See Figure 7
DTMF mode
DTMF mode
Call Progress mode
Call Progress mode
R
R
R
Ext. clock
Ext. clock
R
25 kHz Bandwidth
f
C
), unless otherwise stated.
@ -25 dBm,
Note 9
@ -25 dBm
@ -25 dBm
L
L
L
L
=3.579545 MHz
=10k
=10k
=10k
=10k
Conditions
Conditions
Conditions