LC75342

Ordering number : ENN*6271 CMOS IC LC75342, 75342M Single-Chip Volume and Tone Control System Preliminary Overview The LC75342 and LC75342M are electronic volume and tone control systems that provide volume, balance, a 2band equalizer, and input switching functions that can be controlled from serially transferred data. Package Dimensions unit: mm 3196-DIP30SD [LC75342] 30 16 Functions • Volume: 0 dB to –79 dB (in 1-dB steps) and –∞, for a total of 81 settings. The volume can be controlled independently in the left and right channels to implement a balance function. • Bass boost: Up to +20 dB in 2-dB steps. Peaking characteristics. • Treble: ±10 dB in 2-dB steps. Shelving characteristics. • Selector: One of four sets of left/right inputs can be selected. • Input gain: The input signal can be boosted by from 0 dB to +30 dB in 2-dB steps. 10.16 8.6 0.25 1 27.2 3.95max 3.0 1.14 1.78 0.48 0.95 3.25 15 SANYO: DIP30SD unit: mm 3216-MFP30S [LC75342M] 30 16 Features • On-chip buffer amplifiers minimize the number of external components. • Fabricated in a silicon gate CMOS process to minimize switching noise from internal switches. • Built-in analog ground reference voltage generation circuit. • All controls can be set from serially transferred data. Supports the CCB standard. 2.5max 1 15.3 15 2.15 0.15 0.35 1.0 0.65 0.1 SANYO: MFP30S • CCB is a trademark of SANYO ELECTRIC CO., LTD. • CCB is a SANYO’s original bus format and all the bus addresses are controlled by SANYO. 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 D2499RM (OT) No. 6271-1/20 0.65 10.5 7.9 9.2 LC75342, 75342M Specifications Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V Parameter Maximum supply voltage Maximum input voltage Symbol VDD max VIN max VDD CE, DI, CL, L1 to L4, R1 to R4, LIN, RIN Ta ≤ 75°C Allowable power dissipation Operating temperature Storage temperature Pdmax Topr Tstg Ta ≤ 75°C with a PCB* LC75342 LC75342M Pin Conditions Ratings 11 VSS – 0.3 to VDD + 0.3 450 450 –30 to +75 –40 to +125 mW °C °C Unit V V Note: * Printed circuit board size: 76.1 × 114.3 × 1.6 mm, printed circuit board material: glass/epoxy resin Allowable Operating Ranges at Ta = –30 to +75°C, VSS = 0 V Parameter Supply voltage High-level input voltage Low-level input voltage Input voltage amplitude Input pulse width Setup time Hold time Operating frequency Symbol VDD VIH VIL VIN tøW tsetup thold fopg VDD CL, DI, CE CL, DI, CE CE, DI, CL, L1 to L4, R1 to R4, LIN, RIN CL CL, DI, CE CL, DI, CE CL 7.5 ≤ VDD ≤ 10.0 4.5 ≤ VDD < 7.5 Pin Conditions Ratings min 4.5 2.7 VSS VSS VSS 1 1 1 500 typ max 10 10 1.0 0.8 VDD Unit V V V Vp-p µs µs µs kHz Electrical Characteristics at Ta = 25°C, VDD = 9 V, VSS = 0 V Input Block Parameter Maximum input gain Step resolution Input resistance Clipping level Output load resistance Symbol Gin max Gstep Rin Vcl Rl L1, L2, L3, L4 R1, R2, R3, R4 LSEL0, RSEL0 LSEL0, RSEL0 THD = 1.0%, f = 1 kHz 10 Pin Conditions Ratings min typ +30 +2 50 2.90 max Unit dB dB kΩ Vrms kΩ Volume Control Block Parameter Input resistance Symbol Rin LIN, RIN Pin Conditions Ratings min typ 50 max Unit kΩ Bass Band Equalizer Control Block Parameter Control range Step resolution Internal feedback resistance Symbol Geq Estep Rfeed Pin Conditions max.boost Ratings min ±18 1 typ ±20 2 66.6 max ±22 3 Unit dB dB kΩ Treble Band Equalizer Control Block Parameter Control range Step resolution Internal feedback resistance Symbol Geq Estep Rfeed Pin Conditions max.boost/cut Ratings min ±8 1 typ ±10 2 51.7 max ±12 3 Unit dB dB kΩ No. 6271-2/20 LC75342, 75342M Overall Characteristics Parameter Total harmonic distortion Crosstalk Output noise voltage Maximum attenuation Current drain High-level input current Low-level input current Symbol THD CT VN Vomin IDD IIH IIL Conditions VIN = 1 Vrms, f = 1 kHz, all flat overall VIN = 1 Vrms, f = 1 kHz, Rg = 1 kΩ, all flat overall All flat overall, 80 kHz, L.P.F All flat overall, f = 1 kHz VDD – VSS = +10 V CL, DI, CE: VIN = 10 V CL, DI, CE: VIN = 0 V –10 80 9.3 –90 37 10 Ratings min typ max 0.01 Unit % dB µV dB mA µA µA Pin Assignment LC75342, 75342M (Top view) No. 6271-3/20 Equivalent Circuit Control circuit Logic circuit CCB interface Microcontroller LC75342, 75342M Control circuit No. 6271-4/20 LC75342, 75342M Control System Timing and Data Format Applications control the LC75342 and LC75342M by applying the stipulated serial data to the CL, DI, and CE pins. This data consists of a total of 40 bits, of which 8 bits are the address and 32 bits are the data itself. • Address code (B0 to A3) The LC75342 and LC75342M have an 8-bit address code, and can be used together with other ICs that support the Sanyo CCB serial bus format. Address code (LSB) B0 0 B1 1 B2 0 B3 0 A0 0 A1 0 A2 0 A3 1 (82HEX) • Control code allocation Input switching control (L1, L2, L3, L4, R1, R2, R3, R4) D0 0 1 0 1 0 1 0 1 D1 0 0 1 1 0 0 1 1 D2 0 0 0 0 1 1 1 1 D3 0 0 0 0 0 0 0 0 Operation L1 (R1) ON L2 (R2) ON L3 (R3) ON L4 (R4) ON All switches off All switches off All switches off All switches off No. 6271-5/20 LC75342, 75342M Input Gain Control D4 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 D5 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 D6 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 D7 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 Operation 0 dB +2 dB +4 dB +6 dB +8 dB +10 dB +12 dB +14 dB +16 dB +18 dB +20 dB +22 dB +24 dB +26 dB +28 dB +30 dB No. 6271-6/20 LC75342, 75342M Volume Control D8 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 D9 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 D10 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 D11 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 D12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 D13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 D14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 D15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Operation 0 dB –1 dB –2 dB –3 dB –4 dB –5 dB –6 dB –7 dB –8 dB –9 dB –10 dB –11 dB –12 dB –13 dB –14 dB –15 dB –16 dB –17 dB –18 dB –19 dB –20 dB –21 dB –22 dB –23 dB –24 dB –25 dB –26 dB –27 dB –28 dB –29 dB –30 dB –31 dB –32 dB –33 dB –34 dB –35 dB –36 dB –37 dB –38 dB –39 dB –40 dB –41 dB –42 dB –43 dB –44 dB –45 dB –46 dB –47 dB –48 dB –49 dB –50 dB No. 6271-7/20 LC75342, 75342M Volume Control D8 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 D9 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 D10 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 D11 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 D12 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 D13 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 D14 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 D15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Operation –51 dB –52 dB –53 dB –54 dB –55 dB –56 dB –57 dB –58 dB –59 dB –60 dB –61 dB –62 dB –63 dB –64 dB –65 dB –66 dB –67 dB –68 dB –69 dB –70 dB –71 dB –72 dB –73 dB –74 dB –75 dB –76 dB –77 dB –78 dB –79 dB –∞ dB Treble Control D16 1 0 1 0 1 0 1 0 1 0 1 D17 0 0 1 1 0 0 0 1 1 0 0 D18 1 1 0 0 0 0 0 0 0 1 1 D19 0 0 0 0 0 0 1 1 1 1 1 Operation +10 dB +8 dB +6 dB +4 dB +2 dB 0 dB –2 dB –4 dB –6 dB –8 dB –10 dB No. 6271-8/20 LC75342, 75342M Bass Control D20 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 D21 1 0 0 1 1 0 0 1 1 0 0 0 1 1 0 0 1 1 0 0 1 D22 0 0 0 1 1 1 1 0 0 1 0 0 0 0 1 1 1 1 0 0 0 D23 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 D24 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 D25 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Operation +20 dB +18 dB +16 dB +14 dB +12 dB +10 dB +8 dB +6 dB +4 dB +2 dB 0 dB –2 dB –4 dB –6 dB –8 dB –10 dB –12 dB –14 dB –16 dB –18 dB –20 dB Channel Selection D26 0 1 0 1 D27 0 0 1 1 Operation RCH LCH Left and right together Test Mode D28 0 D29 0 D30 0 D31 0 Operation These bits are used for IC testing and must all be set to 0 during normal operation. No. 6271-9/20 LC75342, 75342M Pin Functions Pin No. 14 13 12 11 17 18 19 20 Pin L1 L2 L3 L4 R1 R2 R3 R4 • Input signal connections Description Notes 10 21 LSEL0 RSEL0 • Input selector outputs 7 6 24 25 LBASS1 LBASS2 RBASS1 RBASS2 • Connections for the resistors and capacitors that form the bass band filters. 9 22 LIN RIN • Volume control and equalizer input 5 26 LOUT ROUT • Volume and equalizer outputs 8 23 LTRE RTRE • Connections for the capacitors that form the treble band filters. Continued on next page. No. 6271-10/20 LC75342, 75342M Continued from preceding page. Pin No. Pin Description Notes • Connection to the 0.5 × VDD voltage generator circuit used as the analog signal ground. 28 Vref Applications must connect a capacitor of about 10 µF between this pin and VSS to exclude power supply ripple. 3 29 VSS VDD • Ground • Power supply • Chip enable 2 CE Data is written to the internal latch when this pin goes from high to low. The internal analog switches operate at this point. Data transfer is enabled when this pin is high. 1 30 DI CL • Serial data and clock inputs used for IC control. 4 VSS • Electronic volume and tone control testing This pin must be tied to VSS during normal operation. 15 16 27 NC • Unused. These pins must be left open or connected to V SS during normal operation. No. 6271-11/20 LC75342, 75342M Internal Equivalent Circuits • Selector block equivalent circuit The right channel is identical. Unit (resistance: kΩ) No. 6271-12/20 LC75342, 75342M • Treble and bass band block internal equivalent circuit From volume block The right channel is identical. Unit (resistance: kΩ) The right channel is identical. Unit (resistance: kΩ) Set switches SW1 and SW3 to the on position for boost, and set switches SW2 and SW4 to the on position for cut. For a flat (0 dB) response, set the 0dBSW, SW2, and SW3 switches on. No. 6271-13/20 LC75342, 75342M • Volume block internal equivalent circuit To treble block The right channel is identical. Unit (resistance: Ω) No. 6271-14/20 LC75342, 75342M Test Circuits • Total harmonic distortion Microcontroller LC75342 LC75342M The right channel is identical. Distortion analyzer Units (resistance: Ω, capacitnace: F) No. 6271-15/20 LC75342, 75342M • Output noise voltage Microcontroller LC75342 LC75342M The right channel is identical. Noise meter Units (resistance: Ω, capacitnace: F) No. 6271-16/20 LC75342, 75342M • Crosstalk Microcontroller LC75342 LC75342M The right channel is identical. Volt meter Units (resistance: Ω, capacitnace: F) No. 6271-17/20 LC75342, 75342M Bass Band Circuit This section presents the equivalent circuit and the calculations for the external capacitors and resistors used to achieve a center frequency of 100 Hz. • Bass band equivalent circuit • Sample calculation Specifications Center frequency: f0 = 100 Hz Gain at maximum boost: G = 20 dB Let R1 = 0, R2 = 66.6 KΩ, and C1 = C2 = C. (1) Determine R2 from the fact that G = 20 dB. R2 G+20dB = 20 × LOG10 1 + —— 2R3 R2 66000 R3 = ———————— = ————— ≠ 3.7 kΩ G+20dB/20 2 (10 – 1) 2 × (10 – 1) ( ) (2) Determine C from the fact that the center frequency f0 = 100 Hz. 1 f 0 = ———————— 2π R3R2C1C2 1 1 C = —————— = ——————————— ≠ 0.1 µF 2πf 0 R3R2 2π × 100 66000 × 3700 (3) Determine Q. R3R2 1 Q = ——— • ——— ≠ 2.1 2R3 R3R2 No. 6271-18/20 LC75342, 75342M Volume Control Step Characteristics 0 -10 Bass Control Frequency Characteristics 5 -0 -5 Volume attenuation — dB -20 -30 -40 -50 -60 -70 -80 -90 VDD = 9 V VSS = 0 V VIN = 0 dBV f = 1 KHz All tone control settings flat -∞ -80 -70 -60 -50 -40 -30 -20 -10 0 Gain, G — dBV -10 -15 -20 -25 -30 -35 -40 -45 10 100 1000 10000 -100 VDD = 9 V, VSS = 0 V VIN = –20 dBV With external capacitor and resistor values of 0.1 µF and 3.7 kΩ, respectively Frequency, f -—Hz Step — dB Treble Control Frequency Characteristics 0 THD - Frequency Characteristics (1) 1 -5 -10 Total harmonic distortion, THD — % Gain, G — dBV 0.1 -15 VDD = 9 V VSS = 0 V VIN = 0 dBV 100 kHz low-pass weighting All tone control settings flat -20 With the volume control at the –10 dB position -25 -30 -35 VDD = 9 V VSS = 0 V VIN = –20 dBV With an external capacitor value of 2700 pF 10 100 1000 10000 100000 0.01 -10 0.001 10 With the volume control at the 0 dB position 100 1000 10000 100000 Frequency, f — Hz THD - Frequency Characteristics (2) 1 Frequency, f — Hz THD - Supply Voltage Characteristics (1) 1 Total harmonic distortion, THD — % 0.1 Total harmonic distortion, THD — % VDD = 9 V VSS = 0 V VIN = 0 dBV 100 kHz low-pass weighting All tone control settings flat 0.1 With the volume control at the –10 dB position VSS = 0 V VIN = 0 dBV f = 1 KHz 100 kHz low-pass weighting All tone control settings flat With the volume control at the 0 dB position 0.01 0.01 With the volume control at the 0 dB position 0.001 10 100 1000 10000 100000 With the volume control at the –10 dB position 4 5 6 7 8 9 10 11 0.001 Frequency, f — Hz THD - Supply Voltage Characteristics (2) 1 Supply voltage, VDD — V THD - Input Level Characteristics (1) 10 Total harmonic distortion, THD — % Total harmonic distortion, THD — % 0.1 VSS = 0 V VIN = –10 dBV f = 1 KHz 100 kHz low-pass weighting All tone control settings flat With the volume control at the –10 dB position 1 VDD = 9 V VSS = 0 V 100 kHz low-pass weighting All tone control settings flat 0.1 f = 20 KHz 0.01 0.01 With the volume control at the 0 dB position 4 5 6 7 8 9 10 11 f = 1 KHz -15 -10 -5 0 5 10 0.001 0.001 -20 Supply voltage, VDD — V Input level, VIN — dBV No. 6271-19/20 LC75342, 75342M THD - Input Level Characteristics (2) 10 Total harmonic distortion, THD — % 1 VDD = 9 V VSS = 0 V 100 kHz low-pass weighting All tone control settings flat With the volume control at the –10 dB position 0.1 f = 20 KHz 0.01 f = 1 KHz 0.001 -20 -15 -10 -5 0 5 10 Input level, VIN — dBV 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. T his catalog provides information as of December, 1999. Specifications and information herein are subject to change without notice. PS No. 6271-20/20