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PDF AG1171 Data sheet ( Hoja de datos )
| Número de pieza | AG1171 | |
| Descripción | Low Power Ringing SLIC | |
| Fabricantes | Siliver | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AG1171 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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Silver
V1.0 Dec 2006
Data Sheet
Ag1171
T E L E C O M +3.3V / +5.0V Low Power Ringing SLIC
Pb 1. Features
¾ A highly featured low power SLIC in a
14 pin SIL format.
¾ Integral high efficiency DC/DC
converter. Single supply voltage:
+3.3V to +5.0V.
¾ Highly integrated with an on-board
ringing generator.
¾ Tip/Ring polarity reversal. On-Hook
Transmission for caller line ID.
¾ Suitable for FCT applications.
¾ Easy to use, with a minimum number
of external components.
¾ Simplified protection in “on-premise”
applications.
¾ Silver Telecom “design-in” assistance
2. Description
The Silver Telecom Ag1171 is a single Subscriber Line Interface Circuit (SLIC) in a 14 pin
single in line (SIL) format. The combination of features and packaging offers extremely efficient
use of board area, saving significant system size and cost, minimising time to market for
Telephony Systems developers.
The Ag1171 has been designed to work with loop lengths of typically 1.0km (470R including
telephone).
The Ag1171 has integral dc/dc converter and ringing generation thus providing all the line
powering requirements from a single supply. The Ag1171 requires a minimum of external
components, making it ideal for low line count, short loop length applications, such as WLL
Terminal (WLL), Fixed Cellular Terminals (FCT), Fixed Wireless Terminals (FWT) and Internet
Telephony (VoIP).
© Silver Telecom 2006
1 page  
V1.0 Dec 2006
Data Sheet
4. Pin Description
Ag1171
+3.3V / +5.0V Low Power Ringing SLIC
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Name
RING (B)
TIP (A)
F/R
RM
SHK
NC
NC
NC
VIN
VOUT
NC
GNDPWR
+VPWR
PD
Description
Ring. Connects to the subscriber line Ring.
Tip. Connects to the subscriber line Tip.
Forward/Reverse. A logic (L) will reverse the Tip and Ring
voltage polarities. F/R is toggled to produce the ringing output.
Ringing Mode. Sets bias conditions during ringing. Must be set
to logic (H) during ringing. Logic (L) for other modes.
Switch Hook. Indicates an off-hook condition when at logic (H).
No Connection. Do not connect to this pin.
No Connection. Do not connect to this pin.
No Connection. Do not connect to this pin.
Audio In. Analog input signal from the Codec (which is output on
Tip and Ring). Connect via a 10nF capacitor
Audio Out. This is the analog output signal (from Tip and Ring)
to the Codec. Connect via a 100nF capacitor.
No Connection. Do not connect to this pin.
DC/DC Ground. Ground input for the DC/DC converter.
DC/DC Supply. +5.0V or +3.3V input for the DC/DC converter.
Power Down DC/DC Converter. A logic (L) on this pin powers
down the Ag1171. DO NOT put logic (H) on this pin.
© Silver Telecom 2006
5
5 Page 
V1.0 Dec 2006
Data Sheet
Ag1171
+3.3V / +5.0V Low Power Ringing SLIC
In some applications, additional EMI suppression may be needed. In this instance
capacitors can be added to filter out the higher frequencies of the DC-DC converter. See
figure 5 for details. Values between 1nF and 10nF are suitable.
TIP
RING
1nF
1nF
TIP
RING
Figure 5: Optional EMI Suppression
9. Layout Considerations
9.1. Power and Ground
Tracks to the +VPWR and GNDPWR should be made as thick as possible. To maximise
the performance of the device, signal tracks should be kept as short as possible. To
reduce DC/DC noise capacitors up to 10nF may be connected to ground at Tip and Ring.
© Silver Telecom 2006
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet AG1171.PDF ] | |
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