参数资料
型号: SI3050-E1-FT
厂商: Silicon Laboratories Inc
文件页数: 7/128页
文件大小: 0K
描述: IC VOICE DAA SYSTEM SIDE 20TSSOP
标准包装: 74
系列: *
Si3050 + Si3011/18/19
104
Rev. 1.5
Table 27. Si3011/18/19 Pin Descriptions
QFN
Pin #
SOIC/
TSSOP
Pin #
Pin Name
Description
1NC
No connect.
19
1
QE
Transistor Emitter.
Connects to the emitter of Q3.
20
2
DCT
DC Termination.
Provides dc termination to the telephone network.
23
RX
Receive Input.
Serves as the receive side input from the telephone network.
34
IB
Internal Bias.
Provides a bias voltage to the device.
45
C1B
Isolation Capacitor 1B.
Connects to one side of isolation capacitor C1. Used to communicate with the
system-side device.
56
C2B
Isolation Capacitor 2B.
Connects to one side of isolation capacitor C2. Used to communicate with the
system-side device.
6
7
VREG
Voltage Regulator.
Connects to an external capacitor to provide bypassing for an internal power sup-
ply.
78
RNG1
Ring 1.
Connects through a resistor to the TIP lead of the telephone line. Provides the ring
and caller ID signals to the DAA.
8IGND
Isolated Ground.
Connects to ground on the line-side interface.
99
RNG2
Ring 2.
Connects through a resistor to the RING lead of the telephone line. Provides the
ring and caller ID signals to the DAA.
10
VREG2
Voltage Regulator 2.
Connects to an external capacitor to provide bypassing for an internal power sup-
ply.
11
NC
No connect.
12
11
SC
SC Connection.
Enables external transistor network. Should be tied through a 0
resistor to I
GND.
13
12
QE2
Transistor Emitter 2.
Connects to the emitter of Q4.
14
13
QB
Transistor Base.
Connects to the base of transistor Q4.
15
14
DCT3
DC Termination 3.
Provides dc termination to the telephone network.
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