Ordering number : ENN*6270 CMOS IC LC75341, 75341M Single-Chip Volume and Tone Control System Preliminary Overview Package Dimensions The LC75341 and LC75341M 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. unit: mm 3067-DIP24S [LC75341] 24 13 0.25 1 12 0.81 1.78 0.48 3.25 3.9max 3.3 21.2 0.51min • 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. 7.62 6.4 Functions 0.95 SANYO: DIP24S unit: mm 3112-MFP24S Features [LC75341M] 12 12.6 0.15 0.625 1 1.8max 5.4 6.35 7.6 13 24 0.1 1.5 • 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. 0.35 1.0 0.8 SANYO: MFP24S • 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. 6270-1/20 LC75341, 75341M Specifications Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V Parameter Symbol Pin VDD max VDD Maximum input voltage VIN max CE, DI, CL, L1 to L4, R1 to R4, LIN, RIN Allowable power dissipation Pdmax Maximum supply voltage Conditions Ta ≤ 75°C Ta ≤ 75°C with a PCB* Ratings Unit 11 V VSS – 0.3 to VDD + 0.3 V LC75341 450 LC75341M 450 mW Operating temperature Topr –30 to +75 °C Storage temperature Tstg –40 to +125 °C 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 Symbol Pin Conditions Ratings min typ Unit max Supply voltage VDD VDD 5.0 10 V High-level input voltage VIH CL, DI, CE 2.7 10 V 7.5 ≤ VDD ≤ 10.0 VSS 1.0 5.0 ≤ VDD < 7.5 VSS 0.8 VSS VDD Low-level input voltage VIL CL, DI, CE Input voltage amplitude VIN CE, DI, CL, L1 to L4, R1 to R4, LIN, RIN tøW Input pulse width V Vp-p CL 1 µs Setup time tsetup CL, DI, CE 1 µs Hold time thold CL, DI, CE 1 Operating frequency fopg CL µs 500 kHz Electrical Characteristics at Ta = 25°C, VDD = 9 V, VSS = 0 V Input Block Parameter Maximum input gain Symbol Pin Conditions Ratings min typ Unit max Gin max +30 dB Step resolution Gstep +2 dB Input resistance Rin 50 kΩ Clipping level Vcl LSEL0, RSEL0 Output load resistance Rl LSEL0, RSEL0 L1, L2, L3, L4 R1, R2, R3, R4 THD = 1.0%, f = 1 kHz 2.90 Vrms 10 kΩ Volume Control Block Parameter Input resistance Symbol Rin Pin Conditions Ratings min typ LIN, RIN Unit max 50 kΩ Bass Band Equalizer Control Block Parameter Control range Symbol Pin Geq Step resolution Estep Internal feedback resistance Rfeed Conditions max.boost Ratings min typ Unit max +18 +20 +22 dB 1 2 3 dB 66.6 kΩ Treble Band Equalizer Control Block Parameter Control range Symbol Geq Step resolution Estep Internal feedback resistance Rfeed Pin Conditions max.boost/cut Ratings min typ Unit max ±8 ±10 ±12 dB 1 2 3 dB 51.7 kΩ No. 6270-2/20 LC75341, 75341M Overall Characteristics Parameter Total harmonic distortion Symbol THD Conditions Ratings min typ VIN = 1 Vrms, f = 1 kHz, all flat overall max 0.01 % CT VIN = 1 Vrms, f = 1 kHz, Rg = 1 kΩ, all flat overall Output noise voltage VN All flat overall, 80 kHz, L.P.F 9.3 Maximum attenuation Vomin All flat overall, f = 1 kHz –90 dB 37 mA Crosstalk Current drain IDD VDD – VSS = +10 V High-level input current IIH CL, DI, CE: VIN = 10 V Low-level input current IIL CL, DI, CE: VIN = 0 V 80 Unit dB µV 10 –10 µA µA Pin Assignment LC75341, 75341M (Top view) No. 6270-3/20 Control circuit Logic circuit Control circuit CCB interface Microcontroller LC75341, 75341M Equivalent Circuit No. 6270-4/20 LC75341, 75341M Control System Timing and Data Format Applications control the LC75341 and LC75341M 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 LC75341 and LC75341M 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 B1 B2 B3 A0 A1 A2 A3 0 1 0 0 0 0 0 1 (82HEX) • Control code allocation Input switching control (L1, L2, L3, L4, R1, R2, R3, R4) D0 D1 D2 D3 0 0 0 0 L1 (R1) ON Operation 1 0 0 0 L2 (R2) ON 0 1 0 0 L3 (R3) ON 1 1 0 0 L4 (R4) ON 0 0 1 0 All switches off 1 0 1 0 All switches off 0 1 1 0 All switches off 1 1 1 0 All switches off No. 6270-5/20 LC75341, 75341M Input Gain Control D4 D5 D6 D7 0 0 0 0 Operation 0 dB 1 0 0 0 +2 dB 0 1 0 0 +4 dB 1 1 0 0 +6 dB 0 0 1 0 +8 dB 1 0 1 0 +10 dB 0 1 1 0 +12 dB 1 1 1 0 +14 dB 0 0 0 1 +16 dB 1 0 0 1 +18 dB 0 1 0 1 +20 dB 1 1 0 1 +22 dB 0 0 1 1 +24 dB 1 0 1 1 +26 dB 0 1 1 1 +28 dB 1 1 1 1 +30 dB No. 6270-6/20 LC75341, 75341M Volume Control D8 D9 D10 D11 D12 D13 D14 D15 0 0 0 0 0 0 0 0 Operation 0 dB 1 0 0 0 0 0 0 0 –1 dB 0 1 0 0 0 0 0 0 –2 dB 1 1 0 0 0 0 0 0 –3 dB 0 0 1 0 0 0 0 0 –4 dB 1 0 1 0 0 0 0 0 –5 dB 0 1 1 0 0 0 0 0 –6 dB 1 1 1 0 0 0 0 0 –7 dB 0 0 0 1 0 0 0 0 –8 dB 1 0 0 1 0 0 0 0 –9 dB 0 1 0 1 0 0 0 0 –10 dB 1 1 0 1 0 0 0 0 –11 dB 0 0 1 1 0 0 0 0 –12 dB 1 0 1 1 0 0 0 0 –13 dB 0 1 1 1 0 0 0 0 –14 dB 1 1 1 1 0 0 0 0 –15 dB 0 0 0 0 1 0 0 0 –16 dB 1 0 0 0 1 0 0 0 –17 dB 0 1 0 0 1 0 0 0 –18 dB 1 1 0 0 1 0 0 0 –19 dB 0 0 1 0 1 0 0 0 –20 dB 1 0 1 0 1 0 0 0 –21 dB 0 1 1 0 1 0 0 0 –22 dB 1 1 1 0 1 0 0 0 –23 dB 0 0 0 1 1 0 0 0 –24 dB 1 0 0 1 1 0 0 0 –25 dB 0 1 0 1 1 0 0 0 –26 dB 1 1 0 1 1 0 0 0 –27 dB 0 0 1 1 1 0 0 0 –28 dB 1 0 1 1 1 0 0 0 –29 dB 0 1 1 1 1 0 0 0 –30 dB 1 1 1 1 1 0 0 0 –31 dB 0 0 0 0 0 1 0 0 –32 dB 1 0 0 0 0 1 0 0 –33 dB 0 1 0 0 0 1 0 0 –34 dB 1 1 0 0 0 1 0 0 –35 dB 0 0 1 0 0 1 0 0 –36 dB 1 0 1 0 0 1 0 0 –37 dB 0 1 1 0 0 1 0 0 –38 dB 1 1 1 0 0 1 0 0 –39 dB 0 0 0 1 0 1 0 0 –40 dB 1 0 0 1 0 1 0 0 –41 dB 0 1 0 1 0 1 0 0 –42 dB 1 1 0 1 0 1 0 0 –43 dB 0 0 1 1 0 1 0 0 –44 dB 1 0 1 1 0 1 0 0 –45 dB 0 1 1 1 0 1 0 0 –46 dB 1 1 1 1 0 1 0 0 –47 dB 0 0 0 0 1 1 0 0 –48 dB 1 0 0 0 1 1 0 0 –49 dB 0 1 0 0 1 1 0 0 –50 dB No. 6270-7/20 LC75341, 75341M Volume Control Treble Control D8 D9 D10 D11 D12 D13 D14 D15 Operation 1 1 0 0 1 1 0 0 –51 dB 0 0 1 0 1 1 0 0 –52 dB 1 0 1 0 1 1 0 0 –53 dB 0 1 1 0 1 1 0 0 –54 dB 1 1 1 0 1 1 0 0 –55 dB 0 0 0 1 1 1 0 0 –56 dB 1 0 0 1 1 1 0 0 –57 dB 0 1 0 1 1 1 0 0 –58 dB 1 1 0 1 1 1 0 0 –59 dB 0 0 1 1 1 1 0 0 –60 dB 1 0 1 1 1 1 0 0 –61 dB 0 1 1 1 1 1 0 0 –62 dB 1 1 1 1 1 1 0 0 –63 dB 0 0 0 0 0 0 1 0 –64 dB 1 0 0 0 0 0 1 0 –65 dB 0 1 0 0 0 0 1 0 –66 dB 1 1 0 0 0 0 1 0 –67 dB 0 0 1 0 0 0 1 0 –68 dB 1 0 1 0 0 0 1 0 –69 dB 0 1 1 0 0 0 1 0 –70 dB 1 1 1 0 0 0 1 0 –71 dB 0 0 0 1 0 0 1 0 –72 dB 1 0 0 1 0 0 1 0 –73 dB 0 1 0 1 0 0 1 0 –74 dB 1 1 0 1 0 0 1 0 –75 dB 0 0 1 1 0 0 1 0 –76 dB 1 0 1 1 0 0 1 0 –77 dB 0 1 1 1 0 0 1 0 –78 dB 1 1 1 1 0 0 1 0 –79 dB 0 0 0 0 1 0 1 0 –∞ dB D16 D17 D18 D19 Operation 1 0 1 0 +10 dB 0 0 1 0 +8 dB 1 1 0 0 +6 dB 0 1 0 0 +4 dB 1 0 0 0 +2 dB 0 0 0 0 0 dB 1 0 0 1 –2 dB 0 1 0 1 –4 dB 1 1 0 1 –6 dB 0 0 1 1 –8 dB 1 0 1 1 –10 dB No. 6270-8/20 LC75341, 75341M Bass Control Channel Selection Test Mode D20 D21 D22 D23 D24 D25 Operation 0 1 0 1 0 0 +20 dB 1 0 0 1 0 0 +18 dB 0 0 0 1 0 0 +16 dB 1 1 1 0 0 0 +14 dB 0 1 1 0 0 0 +12 dB 1 0 1 0 0 0 +10 dB 0 0 1 0 0 0 +8 dB 1 1 0 0 0 0 +6 dB 0 1 0 0 0 0 +4 dB 1 0 1 0 0 0 +2 dB 0 0 0 0 0 0 0 dB D26 D27 0 0 1 0 0 1 LCH 1 1 Left and right together D28 D29 D30 D31 0 0 0 0 Operation RCH Operation These bits are used for IC testing and must all be set to 0 during normal operation. No. 6270-9/20 LC75341, 75341M Pin Functions Pin No. Pin 12 L1 11 L2 10 L3 9 L4 13 R1 14 R2 15 R3 16 R4 8 LSEL0 17 RSEL0 5 LBASS 20 RBASS 4 LOUT 21 ROUT 6 LTRE 19 RTRE 7 LIN 18 RIN Description Notes • Input signal connections • Input selector outputs • Connections for the resistors and capacitors that form the bass band filters. • These pins are used both as the connections for the resistors and capacitors that form the bass band filters and as the outputs from the bass/treble circuits. • Connections for the capacitors that form the treble band filters. • Volume control and equalizer input • Connection to the 0.5 × VDD voltage generator circuit used as the analog signal ground. 22 Vref Applications must connect a capacitor of about 10 µF between this pin and VSS to exclude power supply ripple. Continued on next page. No. 6270-10/20 LC75341, 75341M Continued from preceding page. Pin No. Pin 3 VSS Description • Ground 23 VDD • Power supply Notes • Chip enable 2 CE 1 DI 24 CL 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. • Serial data and clock inputs used for IC control. Internal Equivalent Circuits • Selector block equivalent circuit The right channel is identical. Unit (resistance: kΩ) No. 6270-11/21 LC75341, 75341M • 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. 6270-12/20 LC75341, 75341M • Volume block internal equivalent circuit To treble block The right channel is identical. Unit (resistance: Ω) No. 6270-13/20 LC75341, 75341M Test Circuits • Total harmonic distortion LC75341 LC75341M Microcontroller The right channel is identical. Distortion analyzer Units (resistance: Ω, capacitnace: F) No. 6270-14/20 LC75341, 75341M • Output noise voltage LC75341 LC75341M Microcontroller The right channel is identical. Units (resistance: Ω, capacitnace: F) Noise meter No. 6270-15/20 LC75341, 75341M • Crosstalk LC75341 LC75341M Microcontroller Volt meter Units (resistance: Ω, capacitnace: F) No. 6270-16/20 LC75341, 75341M 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 • Treble band circuit The treble band circuit provides shelving characteristics. This section presents the equivalent circuit in boost mode and the formulas used to calculate the external component values. No. 6270-17/20 LC75341, 75341M • Sample calculation Specifications - Set frequency: f = 26,000 Hz Gain at maximum boost: G+10dB = 10 dB Let R1 = 16.240 kΩ, R2 = 35.461 KΩ, Substitute the above constants into the following formulas. ( R2 G = 20 × LOG10 1 + ——————— 2 R1 + (1 / ωC)2 ) 1 C = ——————————— R2 2πf ————— – R12 10G/20 –1 ( ) 1 = —————————————— ≠ 2700 (pF) 35461 2π26000 ———— 2 – 162402 3.16 – 1 ( ) Usage Notes • When power is first applied, the states of the internal analog switches will be undefined. Applications must provide external muting until the control data has been transferred and the switches set to appropriate states. • Applications should transfer both the left and right channel initial settings data before releasing the muting function when initializing this IC after first applying power. • Applications should cover the CL, DI, and CE pin lines with the ground pattern, or should use shielded cables for these lines to prevent the high-frequency digital signals transmitted over these lines from entering analog signal system. • When the oscillation occurs, connect a resistor of at least 200 Ω to LOUT and ROUT pins. No. 6270-18/20 LC75341, 75341M Bass Control Frequency Characteristics Volume Control Step Characteristics 5 0 VDD = 9 V VSS = 0 V VIN = –20 dBV With external capacitor and resistor values of 0.1 µF and 3.7 kΩ, respectively -10 Volume attenuation — dB -0 -20 -5 Gain, G — dBV -30 -40 -50 -60 VDD = 9 V VSS = 0 V VIN = 0 dBV f = 1 KHz All tone control settings flat -70 -80 -90 -100 - -10 -15 -20 -25 -30 ∞ -80 -70 -60 -50 -40 -30 -20 -10 10 0 100 1 VDD = 9 V VSS = 0 V VIN = 0 dBV 100 kHz low-pass weighting All tone control settings flat Total harmonic distortion, THD — % 0 -5 Gain, G — dBV -10 -15 -20 -25 -35 VDD = 9 V VSS = 0 V VIN = –20 dBV With an external capacitor value of 2700 pF -10 10 100 1000 10000 0.1 With the volume control at the –10 dB position 0.01 With the volume control at the 0 dB position 0.001 10 100000 Frequency, f — Hz 100 1000 10000 100000 Frequency, f — Hz THD - Frequency Characteristics (2) THD - Supply Voltage Characteristics (1) 1 1 VDD = 9 V VSS = 0 V VIN = 0 dBV 100 kHz low-pass weighting All tone control settings flat VSS = 0 V VIN = 0 dBV f = 1 KHz 100 kHz low-pass weighting All tone control settings flat Total harmonic distortion, THD — % Total harmonic distortion, THD — % 10000 THD - Frequency Characteristics (1) Treble Control Frequency Characteristics -30 1000 Frequency, f -—Hz Step — dB 0.1 With the volume control at the –10 dB position 0.01 With the volume control at the 0 dB position 0.1 With the volume control at the 0 dB position 0.01 With the volume control at the –10 dB position 0.001 0.001 10 100 1000 10000 4 100000 5 6 7 8 9 10 11 Supply voltage, VDD — V Frequency, f — Hz THD - Supply Voltage Characteristics (2) THD - Input Level Characteristics (1) VSS = 0 V VIN = –10 dBV f = 1 KHz 100 kHz low-pass weighting All tone control settings flat Total harmonic distortion, THD — % Total harmonic distortion, THD — % 1 0.1 With the volume control at the –10 dB position 0.01 With the volume control at the 0 dB position 5 6 7 8 9 Supply voltage, VDD — V 10 1 VDD = 9 V VSS = 0 V 100 kHz low-pass weighting All tone control settings flat 0.1 f = 20 KHz 0.01 0.001 -20 0.001 4 10 f = 1 KHz -15 -10 -5 0 5 10 11 Input level, VIN — dBV No. 6270-19/20 LC75341, 75341M THD - Input Level Characteristics (1) 10 Total harmonic distortion, THD — % 1 0.1 f = 20 KHz f = 1 KHz 0.01 0.001 -20 -15 -10 -5 0 Input level, VIN — dBV 5 10 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 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 December, 1999. Specifications and information herein are subject to change without notice. PS No. 6270-20/20