LC75341 Sanyo Semiconductor Corporation, LC75341 Datasheet
LC75341
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LC75341 Summary of contents
Page 1
... Ordering number : ENN*6270 Preliminary Overview The LC75341 and LC75341M are electronic volume and tone control systems that provide volume, balance band equalizer, and input switching functions that can be controlled from serially transferred data. Functions • Volume –79 dB (in 1-dB steps) and – , for a total of 81 settings ...
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... Volume Control Block Parameter Input resistance Bass Band Equalizer Control Block Parameter Control range Step resolution Internal feedback resistance Treble Band Equalizer Control Block Parameter Control range Step resolution Internal feedback resistance LC75341, 75341M = Symbol Pin Conditions V max CE, DI, CL L4, V max ...
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... High-level input current I CL, DI, CE Low-level input current I CL, DI, CE Pin Assignment LC75341, 75341M Conditions = 1 Vrms kHz, all flat overall Vrms kHz all flat overall IN – + LC75341, 75341M Ratings Unit min typ max 0. 9.3 µV – µA –10 µA (Top view) No. 6270-3/20 ...
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... Equivalent Circuit LC75341, 75341M No. 6270-4/20 ...
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... 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 ...
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... Input Gain Control LC75341, 75341M D6 D7 Operation + + + + + + + + + + +30 dB No. 6270-6/20 ...
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... Volume Control LC75341, 75341M D10 D11 D12 D13 D14 D15 Operation – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – ...
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... Volume Control Treble Control D16 D17 LC75341, 75341M D10 D11 D12 D13 D14 D18 D19 Operation – – – – –10 dB D15 Operation 0 – – – – – – – – – – – – – – – – – – ...
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... Bass Control D20 D21 Channel Selection D26 D27 Test Mode D28 D29 0 0 These bits are used for IC testing and must all be set to 0 during normal operation. LC75341, 75341M D22 D23 D24 D25 Operation + + + + + + Operation RCH LCH Left and right together ...
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... Volume control and equalizer input 18 RIN • Connection to the 0.5 analog signal ground. 22 Vref Applications must connect a capacitor of about 10 µF between this pin and V to exclude power supply ripple. SS LC75341, 75341M Description V voltage generator circuit used as the DD Notes Continued on next page. No. 6270-10/20 ...
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... 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 LC75341, 75341M Description Notes No. 6270-11/21 ...
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... Unit (resistance 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. LC75341, 75341M The right channel is identical. Unit (resistance No. 6270-12/20 ...
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... Volume block internal equivalent circuit LC75341, 75341M To treble block The right channel is identical. Unit (resistance: ) No. 6270-13/20 ...
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... Test Circuits • Total harmonic distortion LC75341, 75341M Distortion analyzer Units (resistance: , capacitnace: F) Microcontroller The right channel is identical. No. 6270-14/20 ...
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... Output noise voltage LC75341, 75341M Units (resistance: , capacitnace: F) Noise meter Microcontroller The right channel is identical. No. 6270-15/20 ...
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... Crosstalk Volt meter LC75341, 75341M Units (resistance: , capacitnace: F) Microcontroller No. 6270-16/20 ...
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... 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. LC75341, 75341M ) 66000 3 0.1 µF No. 6270-17/20 ...
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... 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 LC75341, 75341M ) 2 ...
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... KHz 100 kHz low-pass weighting All tone control settings flat 0.1 With the volume control at the –10 dB position 0.01 With the volume control at the 0 dB position 0.001 Supply voltage, V — LC75341, 75341M Bass Control Frequency Characteristics -10 - -20 -25 -30 - THD - Frequency Characteristics (1) 1 ...
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... 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. LC75341, 75341M KHz KHz ...