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PDF LA2806M Data sheet ( Hoja de datos )
| Número de pieza | LA2806M | |
| Descripción | Signal Processor and Power Amplifier IC for Telephone Answering Machines | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number: EN 3852D
Monolithic Linear IC
LA2806M
Signal Processor and Power Amplifier IC for
Telephone Answering Machines
Overview
The LA2806M is a one-chip voice signal processing IC for
single-mechanism answering machines that incorporates the
basic functions required for an answering machine as well as
the microcontroller interface and analog switches that are
needed in order to control those basic functions.
Package Dimensions
unit : mm
3073A-MFP30S
[LA2806M]
Functions
. Recording preamplifier (with ALC : LINE/MIC input)
. Playback equalizer amplifier
. Recording amplifier (DC bias)
. Analog switches
. Voice-operated switch (VOX) with filter
. Power amplifier (PO = 200 mW, RL = 8 Ω, VCC = 5 V)
. Line output buffer
. Microcontroller interface
Features
. One-chip voice signal processing for single-mechanism
. answering machines
Because the LA2806M incorporates all of the basic functions
required for an answering machine and can be controlled by
a microcontroller, this IC makes it possible to design an
original system
. Built-in power amplifier
. Allows conversation recording mode
. Recording bias and amplifier gain control current can be set
. separately using external resistors.
Small package (MFP30S)
SANYO : MFP30S
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC max,
P.VCC max
Pd max
Topr
Tstg
Conditions
Ratings
9
800
–20 to +70
–40 to +150
Unit
V
mW
°C
°C
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
O3097HA (II)/72495HA (ID)/3092HK/D111TS No.3852 - 1/11
1 page  
LA2806M
Mode Selection
Mode
MUTE
ICM REC
2WAY REC
DICT REC
2WAY BEEP
ICM OUT
ICM PLAY
OGM REC
OGM CHANGE
OGM OUT
OGM PLAY
ROOM MONI
ROOM OUT
VOICE SELE
Conversation
recording
REC LINE PWR
ON/ ON/ ON/
OFF OFF OFF
INPUT
D1 D0
MUTE
SW1/
SW11
ICM
REC
SW2
ICM
PLAY
× × × × × HIGH × ×
HIGH LOW HIGH HIGH HIGH LOW 1
0
HIGH LOW LOW HIGH HIGH LOW 1
0
HIGH LOW LOW HIGH LOW LOW 1
0
HIGH HIGH HIGH LOW HIGH LOW 1
0
LOW HIGH HIGH LOW LOW LOW 0
1
LOW LOW HIGH LOW LOW LOW 0
1
LOW LOW LOW HIGH LOW LOW 0
0
LOW LOW HIGH HIGH HIGH LOW 0
0
LOW HIGH HIGH LOW HIGH LOW 0
0
LOW LOW HIGH LOW HIGH LOW 0
0
LOW HIGH LOW HIGH LOW LOW 0
0
LOW LOW HIGH HIGH HIGH LOW 0
0
LOW HIGH HIGH HIGH HIGH LOW 0
0
SW3
LINE
×
1
1
0
1
0
0
0
1
1
1
0
1
1
SW4
MIC
SW5
MUTE
SW6 SW7
PRE/ MONI
OGM /OGM
× 0 ××
0 1 11
0 1 11
1 1 11
0 1 01
0 1 11
0 1 11
1 1 11
0 1 11
0 1 01
0 1 01
1 1 11
0 1 11
0 1 10
SW8
LINE
×
0
0
0
1
1
0
0
0
1
0
1
0
1
SW9
PWR
SW10
PRE/
EQ
××
10
00
00
10
11
11
00
10
10
10
00
10
10
HIGH HIGH HIGH HIGH HIGH LOW 1 0 1 0 1 1 0 1 1 0
Notes
2WAY BEEP : LINE OUT –6 dB
1 = ON and 0 = OFF (SW1 to SW5, SW8, SW9 and SW11)
Pin Functions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Pin name
BIAS/GAIN
ICM
PB NF
GND
LINE
MIC
PRE NF
PRE OUT
ALC. CT
SIG IN
OGM/BEEP
FIL NF
FIL OUT
V. REF
VCC
P.GND
PWR OUT
P.VCC
D.C
PWR IN
PWR MONI
LINE OUT
TH
VOX. C/MUTE
VOX
D0
D1
PWR ON/OFF
LINE ON/OFF
REC ON/OFF
Functions
Bias. Recording amplifier gain and recording bias current controled by external
resistor.
Incoming head input/output
Playback amplifier feedback. Receives negative feedback input from PRE OUT
(pin 8).
Preamplifier ground
Line input
Microphone input
Preamplifier feedback. Receives negative feedback input from PRE OUT (pin 8).
Preamplifier/playback amplifier output
Automatic level control time constant adjust input
Preamplifier/playback amplifier output signal input
Outgoing message/beep input
Filter amplifier negative feedback input
Filter amplifier output
Internal reference voltage output (Approx. 2.2 V)
Preamplifier supply
Power amplifier ground
Power amplifier output
Power amplifier supply
Power amplifier reference voltage output (Approx. 4/9 x P.VCC)
Power amplifier input
Power amplifier monitor output
Line amplifier output
Voice-operated switch (VOX) threshold adjust input. VOX sensitivity can be adjusted
by connecting this signal to the VREF pin (pin 14) via a resistor.
Voice-operated switch (VOX) detection and mute control
Voice-operated switch (VOX) open-collector output
Incoming message, line, microphone and outgoing message/beep analog switch
control inputs.
Power amplifier ON/OFF analog switch control input
Line amplifier ON/OFF analog switch control input
Recording amplifier ON/OFF analog switch control input
No. 3852 - 5/11
5 Page 
LA2806M
SVRR – P.VCC
Power Amplifier
VNO – P.VCC
Power Amplifier
Supply voltage, P.VCC – V
OGM Input/Output Characteristic, Distortion
Supply voltage, P.VCC – V
VOX Sensitivity Characteristic
Pin 11 input level – dBV
VREF – VCC
Frequency, f – Hz
Supply voltage, VCC – V
No products described or contained herein are intended for use in surgical implants, life-support systems,
aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like,
the failure of which may directly or indirectly cause injury, death or property loss.
Anyone purchasing any products described or contained herein for an above-mentioned use shall:
1 Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and
distributors and all their officers and employees, jointly and severally, against any and all claims and litigation
and all damages, cost and expenses associated with such use:
2 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on
SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees
jointly or severally.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for
volume production. 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 October, 1997. Specifications and information herein are subject to change without notice.
No. 3852 - 11/11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet LA2806M.PDF ] | |
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