la8518nm Sanyo Semiconductor Corporation, la8518nm Datasheet

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la8518nm

Manufacturer Part Number
la8518nm
Description
Signal Processor For Cordless Telephone Base Sets
Manufacturer
Sanyo Semiconductor Corporation
Datasheet
Ordering number: EN5421
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
Signal processor block
c Record preamplifier (with ALC)
c Record amplifier
c Power amplifier (V
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
Features
c Because it is possible to switch the Balancing Network
c Receiver amplifier supports ceramic receivers and dynamic
c Power amplifier on chip
c Crosspoint switches allow full mixing, permitting the
c Digital volume control on chip (power system output).
(BN = 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.
receivers.
(V
implementation of a variety of functions, such as three- or
four-way calls.
CC
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
= 5 V, R
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
L
= 8 , P
CC
= 5 V, R
O
= 200 mW).
L
= 8 , P
Signal Processor for Cordless Telephone Base Sets
O
= 200 mW)
Package Dimensions
unit : mm
3159-QFP64E
120
Ambient temperature, Ta − °C
120
Independent IC
1.5 mm
[LA8515NM]
3
glass epoxy board
Monolithic Linear IC
41596HA (II) No.5421-1/31
LA8518NM
SANYO : QIP64E

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la8518nm Summary of contents

Page 1

... TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN Signal Processor for Cordless Telephone Base Sets Package Dimensions unit : mm 3159-QFP64E = 200 mW Monolithic Linear IC LA8518NM [LA8515NM] SANYO : QIP64E 3 120 120 1.5 mm glass epoxy board Independent IC Ambient temperature, Ta − °C 41596HA (II) No.5421-1/31 ...

Page 2

... T Receiving PADC attenuation G R Internal reference voltage V REF [Speech Network Block (Operating characteristics when power is off)] Line voltage V L Internal supply voltage V SP LA8518NM Symbol Conditions V max Speech network block L V max Other than speech network block CC I max L Pd max ...

Page 3

... POWER AMP Voltage gain VG P Output voltage P O Total harmonic distortion THD Input resistance R IN Ripple rejection ratio SVRR Output noise voltage V NO LA8518NM Conditions mA –55 dBV 120 mA –55 dBV mA –20 dBV 120 mA – ...

Page 4

... Power supply switch Pin 31 voltage 1 V CH1 Pin 31 voltage 2 V CH2 Quiescent current I CCO LA8518NM Conditions –24 dBV input –27 dBV input The voltage applied to pin 31 is effective The voltage supplied from pin 64 is effective Power amplifier on min typ max Unit ...

Page 5

... Block Diagram LA8518NM No.5421-5/31 ...

Page 6

... Test Circuit Diagram LA8518NM No.5421-6/31 ...

Page 7

... Sample Application Circuit LA8518NM No.5421-7/31 ...

Page 8

... CC Note 2: SW2 and SW3 in the block diagram are controlled by the MUTE pin (pin 51); the signals that are enabled are shown below. MUTE pin SW2 Transmitting (Pin 58) H TAIN (Pin 59) L DTMF (Pin 60) LA8518NM SW3 Receiving (Pin 7) KT (Pin 55) No.5421-8/31 ...

Page 9

... Note 2: The line amplifier ATT is set when power is first applied, when a reset is performed, and when all of the switches are off. Note 3: The electronic volume control is set when power is first applied, when a reset is performed, and when all of the switches are off. Note 4: The addresses are given in hexadecimal notation. LA8518NM Input RF1 RF2 DOOR ...

Page 10

... (Chip enable pulse width (Reset pulse width) WR Note: The control data must input 400 ms or longer after the supply voltage is applied to V LA8518NM 500 kHz 1µs or longer 1µs or longer 1µs or longer 1µs or longer 1µs or longer 1µs or longer 1µs or longer 1µ ...

Page 11

... RF1 IN 11 RF2 IN 13 AUX IN 12 DOOR IN LA8518NM Internal Equivalent Circuit c Line current input pin, line voltage pin. c Transmitting output current input pin. c Transmitting output current output pin switch pin switch pin 2. Connect when there are two balancing network circuits. Open when not used ...

Page 12

... PRE OUT 25 PRE OUT 35 MIC OUT 26 ALC IN LA8518NM Internal Equivalent Circuit c Line output pin. c Compander 1 input pin. c Compander 2 input pin. c Interphone output pin. c Auxiliary output pin. c Signal processing system GND. c Bias pin. The REC amplifier gain and the REC bias gain can be controlled by an external resistor ...

Page 13

... VOX IN 33 MIC IN 34 MIC NF 37 VOX.C LA8518NM Internal Equivalent Circuit c ALC time constant adjustment pin. Adjusts the ALC attack time and recovery time. c OGM amplifier − input pin. c OGM amplifier output pin. c Internal reference voltage output pin (approx. 2.3 V). c External power supply input pin. Supplies ...

Page 14

... DATA 48 CLOCK 49 RESET to 50 PADC LA8518NM Internal Equivalent Circuit c Power system GND pin. c Power system power supply pin. c Power amplifier output pin. Goes to high impedance when MUTE is on. c Power amplifier − input pin. c Power amplifier + input pin. c Power amplifier reference voltage pin (approximately 4/9 c Output pin for power amplifier ...

Page 15

... TI OUT DTMF IN LA8518NM Internal Equivalent Circuit c Mute pin. Switches the transmitting signal and the DTMF signal in the transmitting system, and the receiving signal and the KT signal in the receiving system (SW2 and SW3 in the block diagram). When low, the DTMF and KT signals are valid. c Receiver amplifier − ...

Page 16

... Continued from preceding page. Pin No. Pin Name 61 REF LA8518NM Internal Equivalent Circuit c Speech network system internal reference voltage output. When the V voltage is 3 more, V output. When the V (Pin 30) less, voltage of approximately (2/5) output. Power supply ON c Speech network system internal power supply ...

Page 17

... The AC impedance is basically determined by R3 (620 ) and C2 (220 µF) in Fig. 1. Because AC loads other than the speech network will be placed on the line, adjust the AC impedance in conjunction with the speech network impedance. * Note that varying R3 changes the DC resistance. DC characteristics (Power on) Line current, I − LA8518NM LA8518NM Fig. 1 -GND, insert C1 (about 0.1µF characteristics (Power off) Line current, I − ...

Page 18

... By connecting a load to V (pin 62 possible to change the DC characteristics without changing the DC characteristics only SP when the power is off. (Refer to the diagram below.) DC characteristics (Power on) Line current, I − LA8518NM LA8518NM Fig. 2 LA8518NM DC characteristics (Power off) No load Line current, I Load No change − No.5421-18/31 ...

Page 19

... Receiver Amplifier Application Circuit 1 When using the dynamic receiver 2 When using the ceramic receiver c The Receiver Amplifier Attenuator Normally, the attenuator is set to −6 dB set when serial data 3A is on. LA8518NM No.5421-19/31 ...

Page 20

... Note 1) Terminal of line 600 Receiving Balancing Receiving input Network amp * 120 When serial data 3A is turned on. Note 2) The gain values are approximate values. Note 3) The values shown in parentheses can be varied externally. LA8518NM Transmitting amp Receiving output amp Attenuation No.5421-20/31 ...

Page 21

... Power off 2 SW2, SW3 operation Pin 51 (MUTE) SW2 High 1 Low 2 LA8518NM * When the power is off, SW1 and SW2 are fixed at ‘‘2’’ and SW4 cannot be switched SW2 and SW3 operate as shown in the table at left, SW3 regardless of whether the power off. ...

Page 22

... VOX output (pin 45) goes low. The output level is adjusted by inserting a resistor between VOX TH (pin 32) and V (pin 30). REF 2 Because the circuit can be used as a waveform shaper by connecting VOX C (pin 37 400 Hz beep tone can be detected. LA8518NM Crosspoint switch V IN PRE Amp output level Internal reference voltage 2.3 V ...

Page 23

... Power amplifier application * The phase compensation capacitor C2 should be located near the IC. * When muting (address 3F ‘‘off’’), the impedance of the power amplifier output (pin 39) is high. LA8518NM C1 : 0.1 µ 0.1 µ 220 µ 220 µ 100 to 470 µ Voltage gain ...

Page 24

... Serial control mode example Below are the basic modes. Mode ICM REC 2 WAY REC (Base set) (Handset) DECT REC 2 WAY BEEP (Base set) (Handset) ICM OUT LA8518NM Serial Data Address ...

Page 25

... OGM CHANGE OGM OUT OGM PLAY (Base set) (Handset) ROOM MONI ROOM OUT VOICE SELE Interactive REC Extension call Three-way call ‘‘1’’= HIGH ‘‘0’’= LOW LA8518NM Serial Data Address ...

Page 26

... ROOM OUT c Outputting messages, etc., over the speaker by remote control from an outside telephone. 13) VOICE SELE c Outputting the other party’s voice over the speaker when transmitting the response message. 14) Interactive recording c Recording an incoming message while transmitting the answering message. LA8518NM No.5421-26/31 ...

Page 27

... A phase compensation capacitor must be connected between pin 39 (PWR OUT) and pin 38 (P. GND) and positioned near the IC. DC characteristics (power on) Pin 64 Line current, I − Transmitting characteristics (power on) Pin 56 input Open Line current, I − LA8518NM DC characteristics (power off) Pin 62 Pin 61 Transmitting characteristics (power off) Pin 56 input Line current, I Pin 64 Pin 62 Pin 61 Line current, I − Open − ...

Page 28

... Line current, I − Receiving dynamic range (power on) Pin 64 input Receiving D range Line current, I − LA8518NM Transmitting dynamic range (power off) Transmitting D range Line current, I DTMF characteristics (power off) Pin 60 input Line current, I Receiving characteristics (power off) Line current, I Receiving dynamic range (power off) ...

Page 29

... Equivalent input noise Each input shorting Supply voltage, V − Amplifier input/output characteristics Pin 21 input Address 3D on Output level Input level − dBV LA8518NM KT characteristics (power off) Pin 55 input Line current (Pin 30) REF Supply voltage, V PRE Amp ALC characteristics Pin 13 input Address 34 Input level − ...

Page 30

... Input level − dBV PWR Amp P − THD characteristics O Output power, P − LA8518NM MIC Amp input/output characteristics Pin 33 input Output level Input level − dBV Crosspoint switch input characteristics Pin 13 input, Pin 18 output Output level Input level − dBV ...

Page 31

... SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of April, 1996. Specifications and information herein are subject to change without notice. LA8518NM VOX sensitivity Supply voltage, V ...

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