MT88E43AS Zarlink Semiconductor, Inc., MT88E43AS Datasheet - Page 15

• Manufacturer Part Number: MT88E43AS
• Description: Extended Voltage Calling Number Identification Circuit 2
• Manufacturer: Zarlink Semiconductor, Inc.

Data Sheet
AC Electrical Characteristics
a. dBV = decibels above or below a reference voltage of 1Vrms. Signal level is per tone.
b. dBm = decibels above or below a reference power of 1mW into 600 ohms, 0dBm = 0.7746Vrms. Signal level is per tone.
c. Twist = 20 log (f
*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 25
AC Electrical Characteristics - Timing Parameter Measurement Voltage Levels
1
2
3
4
5
6
7
8
1
2
3
Low tone frequency
High tone frequency
Frequency deviation accept
Frequency deviation reject
Accept signal level per tone
Reject signal level per tone
Positive and negative twist
accept
Signal to Noise Ratio
CMOS Threshold Voltage
Rise/Fall Threshold Voltage High
Rise/Fall Threshold Voltage Low
H
amplitude / f
Characteristic
o
C and are for design aid only: not guaranteed and not subject to production testing
Characteristics
L
amplitude).
†
- Dual Tone Alert Signal Detection
SNR
Sym
f
f
H
L
TONE
-37.78
1.1%
3.5%
Min
-40
Sym
V
20
V
V
7
-
-
-
HM
CT
LM
Typ
2130
2750
-
-
-
-
-
-
‡
0.5*V
0.7*V
0.3*V
Level
-43.78
Max
0.22
-46
-2
-
-
-
-
-
-
DD
DD
DD
dBm
dBV
dBm
Unit
dBV
dB
Hz
Hz
dB
Units
c
a
b
V
V
V
range within which
ranges outside of
which tones are
MT88E43
See Note 3
See Note 3
tones are
accepted
rejected
Notes*
1,2
Notes
5-67