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PDF LA8518NM Data sheet ( Hoja de datos )
| Número de pieza | LA8518NM | |
| Descripción | Signal Processor for Cordless Telephone Base Sets | |
| Fabricantes | Sanyo | |
| Logotipo |  |
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Ordering number: EN5421
Monolithic Linear IC
LA8518NM
Signal Processor for Cordless Telephone Base Sets
Functions
Speech network block
c 2-wire/4-wire conversion
c Line driver
c Transmitting amplifier
c Receiving amplifier (with ATT)
c Power supply switching circuit
c Impedance matching
c DTMF interface
c Key tone interface
c BN circuit network switching circuit
(BN = Balancing Network)
Signal processor block
c Record preamplifier (with ALC)
c Record amplifier
c Power amplifier (VCC = 5 V, RL = 8 Ω, PO = 200 mW)
c Playback equalizer amplifier
c Voice detector (VOX)
c Electronic volume control (4 dB, 7 steps)
Crosspoint switch block
c Crosspoint switches (mixing available)
c CPU interface
Package Dimensions
unit : mm
3159-QFP64E
[LA8515NM]
SANYO : QIP64E
Features
c Because it is possible to switch the Balancing Network
between two systems, one for the near end and one for the
far end, in accordance with the line current, this IC provides
excellent sidetone characteristics over a wide range of line
currents.
c Receiver amplifier supports ceramic receivers and dynamic
receivers.
c Power amplifier on chip
(VCC = 5 V, RL = 8 Ω, PO = 200 mW).
c Crosspoint switches allow full mixing, permitting the
implementation of a variety of functions, such as three- or
four-way calls.
c Digital volume control on chip (power system output).
120 × 120 × 1.5 mm3 glass epoxy board
Independent IC
Ambient temperature, Ta − °C
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
41596HA (II) No.5421-1/31
1 page  
Block Diagram
LA8518NM
No.5421-5/31
5 Page 
Pin Functions
Pin No.
64
1
2
Pin Name
VL
TOI
TOO
LA8518NM
Internal Equivalent Circuit
Pin Function
c Line current input pin, line voltage pin.
c Transmitting output current input pin.
c Transmitting output current output pin.
3 BN1
4 BN2
5 GND (SP)
6 RI IN
7 RI OUT
c BN switch pin 1.
c BN switch pin 2. Connect when there are two
balancing network circuits. Open when not
used.
c Speech network system GND pin.
c Receiving input amplifier – input pin.
c Receiving input amplifier output pin.
8 HAND NF
9 HAND MONI
c Handset amplifier – input pin.
c Handset amplifier output pin.
10 RF1 IN
11 RF2 IN
13 AUX IN
12 DOOR IN
c Compander 1 input pin.
c Compander 2 input pin.
c Unused input pin.
c Amplifier input pin for interphone.
Because there is a feedback resistor
(30 kΩ) on chip, the input is passed
through an external resistor.
Continued on next page.
No.5421-11/31
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LA8518NM.PDF ] | |
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