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| 型號(hào)： | RTS8505C |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | The RTS8505C is a caller ID integrated chip with call waiting function. An 8-bit microprocessor (6502) has been built in the chip and it provides a co |
| 中文描述： | 該RTS8505C是一個(gè)集成了來電顯示呼叫等待功能的芯片。一個(gè)8位微處理器（6502）已在芯片的，它提供了一個(gè)合作 |
| 文件頁(yè)數(shù)： | 7/11頁(yè) |
| 文件大?。?/td> | 265K |
| 代理商： | RTS8505C |
(preliminary)
RTS8505C
1.0 6
AC Electrical Characteristics – FSK Demodulation (Temperature=0°
C to 70°
C,
V
DD
=4.5V, GND=0V)
Parameters
Conditions
Min.
Typ.
Max.
Unit
Input sensitivity of Tip and Ring
S/N=25, Baud rate=1200 Bps
Mark=1200Hz, Space=2200Hz
Signal level = 0~-45dBm
Baud rate=1200 Bps
Mark=1200Hz, Space=2200Hz
Signal level = -45dBm, S/N=25
Mark=1200Hz, Space=2200Hz
-
-45
-
dBm
SNR of input signal
-
13
-
dB
Baud Rate
1150
1200
1250
Bps
Positive twist
(twist = mark power-space power)
Negative twist
Bell 202 FSK Mark frequency
Space frequency
AC Electrical Characteristics – CAS Detection (Temperature=0°
Signal level=-45dBm, S/N=25,
Baud rate=1200Bps
-
+10
-6
-
dB
Signal level=-45dBm, S/N=25
Baud rate=1200Bps
1150
2150
1200
2200
1250
2250
Hz
C to 70°
C,
V
DD
=4.5V, GND=0V)
Parameters
Min.
Typ.
Max.
Unit
CAS (CPE Alert Signal) detection sensitivity
-
-40
-
dBm
Low tone frequency
2130-0.5%
2130
2130+0.5%
Hz
High tone frequency
2750-0.5%
2750
2750+0.5%
Hz
Signal reject level
-
-45
-
dBm
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