Advance Information MT88E46
DC Electrical Characteristics† (continued)
‡
Characteristics
Sym
Min
Typ
Max
Units
Test Conditions
DCLK
DATA
DR/DET
CD
Output Low Sink
Current
8
9
I
2
-
-
mA
VOL=0.1*Vdd
OL
IN1+
IN1-
IN2+
IN2-
I
-
-
-
-
1
µA
µA
V =Vdd to Vss
IN1
IN
Input Current
DCLK
CB0
CB1
CB2
I
10
V =Vdd to Vss
IN2
IN
0.5Vdd
-0.1
0.5Vdd
+0.1
10
11
Output Voltage
V
-
-
V
No Load
REF
V
REF
Output Resistance
R
-
2
kΩ
REF
†DC Electrical Characteristics are over recommended operating conditions, unless otherwise stated.
‡Typical figures are at 25˚C and are for design aid only: not guaranteed and not subject to production testing.
†
AC Electrical Characteristics - CAS Detection
‡
Characteristics
Upper Tone Frequency
Sym
Min
Typ
Max
Unit
Notes*
1
2
fH
fL
2736.2
2119.3
2750
2130
2763.8
2140.7
Hz
Hz
1
1
Lower Tone Frequency
-32
-34.22
-14
-16.22
dBm
dBV
3
4
Accept Signal Level (per tone)
-
-
1, 2, 3, 4, 5
‘Off Hook mode’ Reject Signal Level
(per tone)
-45
-47.22
dBm
dBV
-
1, 2, 4, 6
1, 3, 4
5
6
7
8
Twist: 20 log (V2130Hz/V2750Hz
)
-6
75
75
60
-
80
-
+6
85
-
dB
ms
ms
ms
‘Off Hook mode’ Accept CAS Duration
‘On Hook mode’ Accept CAS Duration
CAS Detection Delay from Start of CAS
tDET1
tDET2
tDW
-
-
See Figure 13
See Figure 13
See Figure 13
CAS Detection Delay from End of CAS -
No speech
9
-
-
15
ms
10 CAS Detection Indicator Pulse Width
415
416
417
µs
†AC Electrical Characteristics are over recommended operating conditions, unless otherwise stated.
‡Typical figures are at 25˚C and are for design aid only: not guaranteed and not subject to production testing.
*Notes:
1.OSC1 frequency at 3.579545MHz 0.1%.
2.Tip/Ring or 4-wire side input signal level. Signal level is per tone.
dBm = decibels above or below a reference power of 1mW into 600 ohms. 0dBm = 0.7746Vrms.
dBV = decibels above or below a reference voltage of 1Vrms. 0dBV = 1Vrms.
3.‘On Hook mode’: GS1 op-amp configured to 0dB gain for Vdd=5V 10%, -4dB (preliminary) for Vdd=3V 10%.
4.‘Off Hook mode’: GS2 op-amp configured to 0dB gain for Vdd=5V 10%, -4dB (preliminary) for Vdd=3V 10%.
5.When the signal level difference between the upper and lower tones is within the twist limits.
6.Test condition is both tones have the same amplitude.
15
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