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Ordering number : EN6075
Monolithic Linear IC
LA8520M
Audio Signal-Processing IC with I/O Switching
Overview
The LA8520M is an I/O switching audio signal-processing IC for use in facsimile units and telephones. It integrates a crosspoint switch, a BTL power amplifier, an electronic volume control, a microphone amplifier, and other functions on a single chip.
system: seven 4-dB steps, receiver amplifier system: two 3-dB steps) * Low switching noise, low crosstalk characteristics (crosspoint switch)
Package Dimensions
unit: mm 3129-MFP36SD
[LA8520M]
36 19
Applications
Personal facsimile units and telephones
Functions
* * * * Crosspoint switch (equivalent to an 8 x 8 switch) BTL power amplifier Electronic volume control Serial interface
1
15.3 2.25 2.5max 9.2 10.5 0.65 0.25 7.9
Features
* Built-in BTL power amplifier (8 to 32 load): VCC = 5 V, RL = 16 , Pomax = 250 mW * Electronic volume control (BTL power amplifier
18
0.4
0.8
0.85
Specifications
Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max Pd max Topr Tstg Ta 70C (Mounted on a glass-epoxy board: 114.3 x 76.1 x 1.6 mm3) Conditions Ratings 15 600 -20 to +70 -40 to +150 Unit V mW C C
Operating Conditions at Ta = 25C
Parameter Recommended supply voltage Allowable operating supply voltage range Symbol VCC VCCop VCCopbtl Conditions Ratings 5 4.5 to 7.5 4.5 to 9.0 Unit V V V
Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein.
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TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
30499RM (OT) No. 6075-1/17
0.1
SANYO: MFP36SD
LA8520M Electrical Characteristics at Ta = 25C, VCC = 5 V, fin = 1 kHz, RL = 10 k
Parameter Crosspoint switch voltage gain Crosspoint switch maximum input level Crosspoint switch output noise voltage Microphone amplifier/TR amplifier voltage gain Microphone amplifier/TR output distortion Microphone amplifier/TR equivalent input noise voltage Microphone amplifier/TR maximum voltage gain Receiver amplifier/OGM amplifier voltage gain Receiver amplifier/OGM amplifier output distortion Operational amplifier voltage gain Operational amplifier output distortion DR amplifier output level DR amplifier output distortion Handset amplifier output level Handset amplifier output distortion Handset amplifier attenuator level 1 Handset amplifier attenuator level 2 Handset amplifier attenuator level 3 Electronic volume control output level Electronic volume control step size Electronic volume control output noise voltage [BTL Power Amplifier] Voltage gain Total harmonic distortion Maximum BTL output power Ripple rejection ratio Output noise voltage [CPU Interface] Clock frequency Input signal high level Input signal low level [VREF and Current Drain] Internal reference voltage (the pin 10 voltage) Quiescent current 1 Quiescent current 2 Vref Icco1 Icco2 With the BTL power amplifier on and the crosspoint switch off With the BTL power amplifier off and the crosspoint switch off 2.1 -- -- 2.25 21 14.5 2.4 29 21 V mA mA Fck VH VL -- 3 -- -- -- -- 500 -- 1.5 kHz V V Gpwr THDpw Pomax SVRR Nopw Vin = -20 dBV, RL = 16 Vin = -30 dBV, RL = 16 THD = 10 %, RL = 16 Rg = 620 , frin = 100 Hz, Vrin = -20 dBV, RL = 16 Rg = 620 , 20 to 20 kHz, RL = 16 18.2 -- 250 40 -- 19.7 0.7 400 50 20 21.2 1.5 -- -- 60 dB % mW dB Vrms Symbol Gsw Vimax Nosw Gmic THDmc Nimc Gmax Gre THDre Gop THDop Vodr THDdr Vohd THDhd Att1 Att2 Att3 Voevr Wevr Noevr Vin = -33 dBV Vin = -33 dBV Vin = -13 dBV Vin = -13 dBV Vin = -23 dBV, IN(8), OUT(32), sw(10) on Vin = -23 dBV, IN(8), OUT(32), sw(10) on Vin = -16 dBV, IN(9), OUT(34), sw(0B) on Vin = -16 dBV, IN(9), OUT(34), sw(0B) on address (51) address (52) address (53) Vin = -20 dBV, IN(9), OUT(28), sw(2D) on Vin = -20 dBV, IN(9), OUT(28), sw(2D) on 20 to 20 kHz, OUT(28) -2 -- 2.3 3.45 5.4 -22.9 2.9 -- 8 -- -16.1 Vin = -13 dBV THD = 1.5 % 20 to 20 kHz Vin = -53 dBV Vin = -53 dBV Rg = 620 , 20 to 20 kHz 40 18 38 -- Conditions Ratings min -2.5 -13 typ -0.5 -7 15 40 0.6 2.5 -- 20 0.4 10 0.4 -13.6 0.5 +0.5 0.55 3 4.15 6.1 -20.4 3.8 25 max 1.5 -- 60 42 1.5 7.5 -- 22 1.5 12 1.5 -11.1 1.5 +3 1.5 3.7 4.85 6.8 -17.9 4.6 60 Unit dB dBV Vrms dB % Vrms dB dB % dB % dBV % dBV % dB dB dB dBV dB Vrms
No. 6075-2/17
LA8520M
Power supply Units (resistance: , capacitance: F) 8 to 32
Block Diagram and Application
No. 6075-3/17
LA8520M Test Circuit Diagram
Power supply
Units (resistance: , capacitance: F)
Data generator
No. 6075-4/17
LA8520M Serial Data Format
A6 to A0: Setting for the crosspoint switch and control switch address (hexadecimal binary) D: Controls the on/off state of the crosspoint switch and control switch. D = 1: Crosspoint switch on, BTL amplifier on D = 0: Crosspoint switch off, BTL amplifier off (The electronic volume control and attenuator can be set to either 0 or 1.) Address table
Input - Output RE. TR. RF1 RF2 DOOR AUX MIC OGM OP LINE -- 01 02 03 -- 04 05 06 -- HAND 07 -- 08 09 0A 0B -- 0C -- RF1 0D 0E 38 0F 10 11 12 13 -- RF2 14 15 16 39 17 18 19 1A -- DOOR -- 1B 1C 1D -- 1E 1F 20 -- AUX 21 22 23 24 25 26 27 28 -- EVR 29 -- 2A 2B 2C 2D -- 2E 37 OP 2F 30 31 32 33 34 35 36 --
Other addresses Address Mode 00 All crosspoint switches off, default settings for the control switches 3F BTL power amplifier on (The default state is off.) 40 Electronic volume control 0 dB Default setting 41 Electronic volume control -4 dB 42 Electronic volume control -8 dB 43 Electronic volume control -12 dB 44 Electronic volume control -16 dB 45 Electronic volume control -20 dB 46 Electronic volume control -24 dB 47 Electronic volume control -28 dB 50 Handset amplifier attenuator 0 dB Default setting 51 Handset amplifier attenuator -3 dB 52 Handset amplifier attenuator -4 dB 53 Handset amplifier attenuator -6 dB
No. 6075-5/17
LA8520M Serial Data Timing
* fMAX (Maximum clock frequency) * tWL (Low-level clock pulse width) * tWH (High-level clock pulse width) * tCS (Chip enable setup time) * tCH (Chip enable hold time) * tDS (Data setup time) * tDH (Data hold time) * tWC (Chip enable pulse time)
500 kHz At least 1 s At least 1 s At least 1 s At least 1 s At least 1 s At least 1 s At least 1 s
No. 6075-6/17
LA8520M Usage Notes * Microphone and TR amplifiers Since these two amplifiers are designed for high gain (they support gains up to 40 dB), they cannot be used as buffer amplifiers. Use at lower gains may result in loss of phase margin and oscillation. Therefore, the gain must be set to a value of at least 6 dB. * Handset amplifier output (pin 34) A resistor (of at least 150 ) must be inserted in series if this output is connected directly to a dynamic speaker. * BTL power amplifier
Input
The phase compensation capacitor C4 is not required if the high-frequency noise reduction capacitor C1 is not used. Also, the phase compensation capacitors C2, C3, and C4 should be placed as close as possible to the IC pins, with C2 located the closest. * Inter-pin shorting This IC may be damaged or destroyed if power is applied with any pins shorted together. Therefore, when mounting this IC to a printed circuit board always check for pin shorting caused by stray solder or any other foreign material before applying power. * Load shorting This IC may be damaged or destroyed if it is operated for extended periods with the load shorted. Do not allow the load to be shorted. * The slightest fluctuations in operating conditions may cause the ratings to be exceeded if this IC is operated in the vicinity of the maximum ratings. Since this can lead to destruction of the device, applications must be designed with adequate margins with respect to the power-supply voltage and other parameters so that the maximum ratings are never exceeded.
No. 6075-7/17
LA8520M Pin Functions
Pin No. 1 Pin RE-NF Pin voltage (V) 2.25 Notes RE amplifier noise filter Equivalent circuit Unit (resistance: )
2
RE-OUT
2.25
RE amplifier output
14
OGM-OUT
2.25
OGM amplifier output
15
OGM-NF
2.25
OGM amplifier noise filter
16
OP-NF
2.25
Operational amplifier noise filter
17
OP-OUT
2.25
Operational amplifier output
3
TR-OUT
2.25
TR amplifier output
4
TR-NIN
2.25
TR amplifier minus input
5
TR-PIN
2.25
TR amplifier plus input
11
MIC-PIN
2.25
Microphone amplifier plus input
12
MIC-NIN
2.25
Microphone amplifier minus input
13
MIC-OUT
2.25
Microphone amplifier output
6
RF1-IN
2.25
RF1 input
7
RF2-IN
2.25
RF2 input
9
AUX-IN
2.25
Auxiliary input
8
DR-IN
2.25
Door phone input
Continued on next page.
No. 6075-8/17
LA8520M
Continued from preceding page.
Pin No. Pin Pin voltage (V) Notes Equivalent circuit Unit (resistance: )
10
VREF
2.25
Internal circuit reference voltage (about 2.25 V) * Circuits other than the BTL amplifier operate using this potential as a reference.
19
CE
VCC
Chip enable input
20
DI
VCC
Data input
21
CL
VCC
Clock input
24
P-OUT1
0.44 VCC
BTL power amplifier output 1
To 27 pin 26 P-IN 0.44 VCC BTL power amplifier minus input
23
P-OUT2
0.44 VCC
BTL power amplifier output 2
To 24 pin 27 P-VREF 0.44 VCC BTL power amplifier reference voltage
Continued on next page.
No. 6075-9/17
LA8520M
Continued from preceding page.
Pin No. Pin Pin voltage (V) Notes Equivalent circuit Unit (resistance: )
28
VR-OUT
2.25
Electronic volume control output
29
AUX-OUT
2.25
Auxiliary output
30
DR-OUT
2.25
Door phone output
31
RF2-OUT
2.25
RF2 output
32
RF1-OUT
2.25
RF1 output
35
LN-OUT
2.25
Line output
33
HD-NF
2.25
Handset amplifier noise filter
34
HD-OUT
2.25
Handset amplifier output
18
GND
--
Ground
22
P-VCC
5 V applied
Power amplifier power supply
25
P-GND
--
Power amplifier ground
36
VCC
5 V applied
Power supply
No. 6075-10/17
BTL Amplifier Output Distortion Thermal Characteristics Crosspoint Switch Input Dynamic Range Thermal Characteristics
VCC = 5 V Resistance: 16
Output total harmonic distortion (%)
Total harmonic distortion (%) Input level (dBV) Total harmonic distortion (%) Input level (dBV)
Output power (mW)
LA8520M
Handset Amplifier Output Distortion Thermal Characteristics
Electronic Volume Control Output Distortion Thermal Characteristics
Total harmonic distortion (%)
No. 6075-11/17
Input level (dBV)
Quiescent Current Thermal Characteristics
Electronic Volume Control Step Width Thermal Characteristics
Step width (dB)
Quiescent current (mA) Temperature (C)
Temperature (C)
LA8520M
BTL Amplifier Output Distortion Characteristics
ATT Attenuation Thermal Characteristics
Attenuation (dB)
Total harmonic distortion (%)
No. 6075-12/17
Output power (mW)
Temperature (C)
Door Phone Amplifier Output Distortion Characteristics BTL Amplifier Output Distortion Characteristics
Total harmonic distortion (%)
Total harmonic distortion (%) Output level (dBV) Output power (mW) Total harmonic distortion (%) Output level (V rms) Output level (V rms)
LA8520M
RE Amplifier Output Distortion Characteristics
Handset Amplifier Output Distortion Characteristics
Total harmonic distortion (%)
No. 6075-13/17
Microphone and TR Amplifiers Output Distortion Characteristics Operational Amplifier Output Distortion Characteristics
Total harmonic distortion (%) Total harmonic distortion (%) Output level (V rms)
Output level (V rms)
LA8520M
Crosspoint Switch Input Dynamic Range Characteristics
OGM Amplifier Output Distortion Characteristics
Total harmonic distortion (%)
Output total harmonic distortion (%)
No. 6075-14/17
Input level (dBV)
Output level (V rms)
Input Crosstalk Characteristics Electronic Volume Control Step Width VCC Dependence
Step width (dB)
Crosstalk level (dBV) Supply voltage (V) Attenuation (dB) Supply voltage (V)
Input level (dBV)
LA8520M
Crosstalk VCC Dependence
Attenuator Attenuation VCC Dependence
Crosstalk level (dBV)
No. 6075-15/17
Supply voltage (V)
BTL Amplifier Output Noise VCC Dependence BTL Amplifier Ripple Rejection Ratio VCC Dependence
Ripple rejection ratio (dB)
Output noise (dBV) Supply voltage (V)
Supply voltage (V)
LA8520M
Quiescent Current VCC Dependence
Output Noise VCC Dependence
Output noise (dBV)
Quiescent current (mA)
No. 6075-16/17
Supply voltage (V)
Supply voltage (V)
LA8520M
Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO products (including technical data, services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO product that you intend to use. 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 March, 1999. Specifications and information herein are subject to change without notice. PS No. 6075-17/17

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