EM78815
8-Bit Microcontroller
FSK AC Characteristic (Vdd = 3V, Ta = +25°C)
Characteristic
Min.
Typ.
Max.
Unit
FSK Sensitivity
Low Level Sensitivity Tip & Ring @SNR 20dB
High Level Sensitivity Tip & Ring @SNR 20dB
Signal Reject
-40
−
-48
0
dBm
dBm
dBm
−
−
−
-51
−
FSK Twist
Positive Twist (High Level)
Positive Twist (Low Level)
Negative Twist (High Level)
Negative Twist (Low Level)
+10
+10
-6
dB
dB
dB
dB
−
−
−
−
−
−
−
−
-6
CW AC Characteristic (Vdd=3V,Ta=+25°C)
Characteristic
Min.
Typ.
Max.
Unit
CW Sensitivity
Sensitivity @SNR 20dB
USA & Europe Mode
-38
dBm
−
−
Low Tone Frequency 2130Hz
High Tone Frequency 2750Hz
Chinese Call Waiting Mode
Low Tone Frequency 2130Hz
High Tone Frequency 2750Hz
Chinese SMS Mode
±1.2
±1.2
%
%
−
−
−
−
±2.0
±2.0
%
%
−
−
−
−
Low Tone Frequency 2130Hz
High Tone Frequency 2750Hz
CW Twist
±5.5
±5.5
%
%
−
−
−
−
Twist
±7
dB
−
−
DTMF (DTMF Receiver) AC Characteristic (Vdd = 3V, Ta = +25°C)
Characteristic
Min.
Typ.
Max.
Unit
DTMF Receiver
Low Level Signal Sensitivity
High Level Signal Sensitivity
Low Tone Frequency
-36
0
dBm
dBm
%
−
−
−
−
−
−
−
−
±2
±2
High Tone Frequency
%
DTMF Receiver Noise Endurance
Signal-to-noise Ratio
15
dB
−
−
68 •
Product Specification (V2.4) 02.17.2006
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
