MT88E43B
Data Sheet
AC Electrical Characteristics† - Dual Tone Alert Signal Detection
Characteristic
Sym.
Min.
Typ.‡
Max.
Unit
Notes*
6
7
8
Reject signal level per tone
-
-
-46
dBV
dBm
dB3
See Note 3
-43.78
Positive and negative twist
accept
7
-
-
-
Signal to Noise Ratio
SNRTONE
20
-
dB
1,2
1. dBV = decibels above or below a reference voltage of 1Vrms. Signal level is per tone.
2. dBm = decibels above or below a reference power of 1mW into 600 ohms, 0 dBm = 0.7746Vrms. Signal level is per tone.
3. Twist = 20 log (fH amplitude / fL amplitude).
*Notes:
1. Both tones have the same amplitude.
2. Band limited random noise 300-3400Hz. Measurement valid only when tone is present.
3. With gain setting as shown in Figure 10. Production tested at 3V ±10%, 5V ±10%.
=AC Electrical Characteristics are over recommended operating conditions, unless otherwise stated.
‡Typical figures are at 25oC and are for design aid only: not guaranteed and not subject to production testing
AC Electrical Characteristics - Timing Parameter Measurement Voltage Levels
Characteristics
Sym
Level
Units
Notes
1
2
3
CMOS Threshold Voltage
VCT
VHM
VLM
0.5*VDD
0.7*VDD
0.3*VDD
V
V
V
Rise/Fall Threshold Voltage High
Rise/Fall Threshold Voltage Low
18
Zarlink Semiconductor Inc.
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