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Ordering number:ENN3977
Monolithic Linear IC
LA4166M
Recording and Playback System for Microcassette Players
Overview
The LA4166M is a recording and playback system IC that incorporates an on-chip moter control governor, making it ideal for use in microcassette and compact cassette recorders. The LA4166M features single-pin control for selecting recording or playback mode and a recording-mode indicator LED driver. The LA4166M is pin-compatible with the LA4165M. The LA4166M incorporates a preamplifier, an automatic level control (ALC) circuit and a power amplifier. The preamplifier functions as both recording microphone amplifier and playback equalization amplifier. The ALC circuit cuts high-level inputs and boosts low-level inputs during recording. The power amplifier outputs 215mW (typ) into a 4 speaker. The LA4166M operates from a 1.8 to 3.6V supply and is available in 24-pin MFPs.
Package Dimensions
unit:mm 3108-MFP24D
[LA4166M]
24 13
15.3
0.25
0.4
1.27
0.1
2.25
0.67
Features
* On-chip motor control governor. * Single-pin control for selecting recording or playback mode. * Recording-mode indicator LED driver. * Pin-compatible with LA4165M. * Recording and playback preamplifier. * ALC circuit. * Power amplifier. * 215mW (typ) output power into 4 speaker. * 1.8 to 3.6V sypply. * 24-pin MFP.
SANYO : MFP24D
Pin Assignment
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Supply voltage Power dissipation Operating temperature range Storage temperature range Symbol VCC PD Topr Tstg Conditions
Top view
Ratings 4.5 1.1 -10 to +50 -55 to +150 Unit V W
C C
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.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
21500TH (KT)/D161TS No.3977-1/7
0.625
1
12
2.55max
9.2 10.5
7.9
LA4166M
Recommended Operating Conditions at Ta = 25C
Parameter Supply voltage Supply voltage range Power amplifier load resistance Preamplifier load resistance Symbol VCC VCC RL1 RL2 Conditions Ratings 3 1.8 to 3.6 4 (Playback mode) 10 (Recording mode) 10 Unit V V k k
Electrical Characteristics at Ta = 25C, VCC=3V, power amplifier RL=4 (playback mode) or 10k (recording mode), preamplifier RL=10k, f=1kHz, 0dBm=0.775V unless otherwise noted.
Parameter Preamplifier and power amplifier quiescent supply current Preamplifier and power amplifier closed-loop voltage gain Preamplifier closed-loop voltage gain Preamplifier maximum output voltage Preamplifier input noise voltage Preamplifier total harmonic distortion Power amplifier voltage gain Power amplifier output power Power amplifier total hormonic distortion Power amplifier output noise voltage ALC turn-ON input voltage ALC range ALC total harmonic distortion ALC output voltage LED drive current Governor reference voltage Governor quiescent input current Governor current divider ratio Governor residual output voltage Governor reference voltage vs. supply voltage characteristic Governor current divider ratio vs. supply voltage characteristic Governor reference voltage ratio vs. output current characteristic Governor current divider ratio vs. output current characteristic Symbol ICCO VG1 VG2 VO VNI THD1 VG3 PO THD2 VNO VI ALCR THD3 VO ILED
VGVN REG
Conditions Recording mode, VI=0V Playback mode, VI=0V Recording mode, VO=-5dBm Playback mode, VO=-5dBm Recording mode, VO=-10dBm, RNF=100 Playback mode, VO=-10dBm, RNF=100 Playback mode, THD=1% Playback mode, 20Hz to 20kHz output bandpass filter Playback mode, VO=0.4V VO=-5dBm, RL=4 THD=10%, RL=4 PO=30mW, RL=4 RV=0, RL=4, 20Hz to 20kHz output bandpass filter See note 1. VREC IN=-40dBm VREC IN=-40dBm Using a red LED Im=100mA Im=100mA Im=50 to 100mA Im=200mA, VGVN REF=VGVN CONT VCC=1.8 to 4.5V, Im=100mA, See note 2. VCC=2.0 to 4.5V, Im=50 to 100mA, See note 3. Im=50 to 200mA, See note 4. Im=50 to 200mA, See note 5.
Ratings min 12 13 62.0 71.0 32.5 42.5 0.3 0.5 0.01 26.0 180 0.05 5 -66.5 30 0.1 0.35 1.0 1.1 2 45 0.1 0 0 0 -0.05 typ 25 26 64.5 73.5 35.0 45.0 0.6 1.1 0.11 28.5 215 0.5 25 -69.0 38 0.67 0.46 2.5 1.25 3 50 0.3 0.1 0.1 0.007 0.005 max 38 39 67.0 76.0 37.5 47.5 1.0 2.0 1.0 31.0 350 1.5 100 -71.5 45 1.5 0.55 4.5 1.4 6 55 0.5 0.5 0.5 0.03 0.05
Unit mA mA dB dB dB dB V V % dB mW % V dBm dB % V mA V mA V %/V %/V %/mA %/mA
Id K Vsat
Notes 1. Referred to ALC turn-ON voltage, input range for the output level to rise 2.5dB 2. The characteristic is given the equation VGVN REF VGVN REF K K + VCC
3. The characteristic is given by the equation + VCC
4. The characteristic is given by the equation VGVN REF + Im VGVN REF 5. The characteristic is given by the equation K K + Im
No.3977-2/7
LA4166M
Block Diagram
Pin Description
Number 1 2 3 4 5 6, 7 8, 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Name EQ C PRE OUT POWER IN POWER OUT ALC DC GND NC GVN VCC GVN OUT GVN GND VS GVN VREF GVN CONT LED DRIVE POWER GND VCC DC CONT VREF REC IN PRE NF PRE GND Description Playback equalization capacitor connection Preamplifier output Power amplifier input Power amplifier output ALC characteristics control network connection Ground No connection Allowable power dissipation, Pd max - W 1.8 to 3.6V governor supply Governor output Governor ground Motor supply voltage Governor reference voltage output Governor control input LED driver output Power amplifier ground 1.8 to 3.6V supply Ripple-filter capacitor connection Record and playback select input Reference voltage output Recording signal input Preamplifier gain control input Preamplifier ground
Pd max - Ta
Ambient temperature, Ta - C
No.3977-3/7
LA4166M
Schematic Diagram
No.3977-4/7
LA4166M
Measurement Circuit
Functional Description The LA4166M comprises a preamplifier, an ALC, an LED driver, a power amplifier and a governor. The operation of these fuctional blocks in recording and playback modes is shown in table 1. Recording mode is selected when CONT is held at 0V, and playback mode, when CONT is open.
Table 1. Block operation
Mode Recording Playback Preamplifier ON ON ALC ON OFF LED driver ON OFF Power amplifier ON ON Governor ON ON
No.3977-5/7
LA4166M
Typical Application
Figure 1. Application circuit Note the external components are used to determine the LA4166M operating characteristics. For example, C2 determines the playback equalization characteristic, R8 determines the preamplifier gain, C8 and R4 determine the ALC attack and recovery times and C17 determines the power supply ripple rejection. The ripple rejection decreases as the capacitance C17 is decreased. Other components are used to determine the overall circuit characteristics. For example, C1 and R1 determine the recording current and C7 prevents output oscillations. Note also that LA4166M internal components determine other LA4166M characteristics. For example, the 2.2k PRE IN input resistor determines the ALC range, and the 1k and 30k resistors at the power amplifier inverting input determine amplifier gain. In addition, LED DRIVE should be left open when not using the LED indicator function, the double-pole switch that controls LED DRIVE is normally closed, the NC pins should be left open, and the GND pins should be tied to ground
No.3977-6/7
LA4166M
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 expor ted without obtaining the expor t 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 February, 2000. Specifications and information herein are subject to change without notice.
PS No.3977-7/7

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