MSM6889 View Datasheet(PDF) - Oki Electric Industry
Part Name
Description
Manufacturer
MSM6889 Datasheet PDF : 21 Pages
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¡ Semiconductor
MSM6889
Analog Interface and Dynamic Characteristics (Continued)
(VD = VA = 5 V ±10%, Ta = –40˚C to +85˚C)
Parameter
Condition
Min.
Typ.
Max.
Unit
Input Impedance
AIN+, 0 to 10 kHz
20
—
—
kW
Modem Receive Signal Level AIN+, FSK Demodulator Signal
—
—
–6
dBm
VR2; Open
Carrier Detect (CD) Signal
OFFÆON —
—
–42
dBm
Answer mode: 1080 Hz
Level
Originate mode: 1750 Hz ONÆOFF –48
—
—
dBm
CD Level Hysteresis
Answer mode: 1080 Hz
Originate mode: 1750 Hz
1
—
—
dB
CD Delay Time
–60 dBm Æ –20 dBm Step
10
—
40
ms
CD Hold Time
–20 dBm Æ –60 dBm Step
0
—
40
ms
Demod. Data Bias Distortion 300 bps, 1/0 Alternative Pattern
—
—
±10
%
NRTS Signal-to-Modem
vNRTS/v Receive Modem Signal
—
—
–2
dB
Receive Signal Ratio
NRTS: 2765 Hz ±30 Hz
CPT Detect Level
400 Hz
–40
—
–6
dBm
CPT Non-detect Level
400 Hz
—
—
–60
dBm
CPT Detect Frequency
R > 20% (square waves output)
(See Fig. 9)
380
—
420
Hz
R > 20% (square waves output)
500
—
—
CPT Non-detect Frequency
Hz
(See Fig. 9)
—
—
300
CPT Detect Delay Time
—
—
20
—
ms
CPT Detect Hold Time
—
—
20
—
ms
PB Tone Detect Amplitude For Each Signal Tone
–46
—
–6
dBm
PB Tone Non-detect Amplitude For Each Signal Tone
—
—
–60
dBm
Detect Frequency
With respect to Nominal Frequency —
—
±1.5
%
Non-detect Frequency
With respect to Nominal Frequency ±3.8
—
—
%
Allowable twist
High-Gr. Tone/Low-Gr. Tone
–6
—
+6
dB
Allowable Noise Level
Noise (0.3 kHz to 3.4 kHz)
Level/Tone Level
—
–12
—
dB
Dial Tone Rejection Ratio 380 Hz to 420 Hz
37
—
—
dB
Signal Repetition Time
TC
Time to Receive
Ts
120
—
49
—
—
ms
—
ms
Invalid Tone Duration
TI
Output Delay Time
TG
Interdigit Pause
TP
Acceptable Drop Out
TB
Fig. 1
—
—
24
ms
24
39
49
ms
30
—
—
ms
—
—
2
ms
SP Delay Time
TSP
Output Trailing edge Delay TD
6
8
10
ms
21
28
35
ms
10/21
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