Maker : YAMAHA CORPORATION
Part No. : YAC526

  Datasheet PDF : YAC526.pdf
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Product Information

YAC526 EVR3 Electric Variable Resistance 3 ■Outline YAC526 (EVR3) is a 2ch high grade digital volume LSI for high-end audio systems. Owing to its built-in high-quality sound operational amplifier, output with wide dynamic range and low distortion factor can be www.DataSheet4U.comobtained. YAC526 is able to control each channel through a serial data interface in 255 steps at 0.5dB per step, and daisy chain connection can constitute a multichannel system. Owing to its zero-cross detection function, the device is able to suppress audible noise that may occur at a quick volume change. ■Features Built-in 2channel high sound quality operational amplifier. Wide volume range. 31.5dB〜 95.0dB, MUTE (0.5dB/step, 255 steps) Maximum input signal amplitude 4.2Vrms (±6V power supply) Low distortion (THD) 0.0002％ typ. (Input=1Vrms@1kHz, Gain=0dB Low residual noise 1.2μVrms typ. (Gain=MUTE, IHF-A) Power supply voltage ±4.75V〜±6.6V Silicon gate CMOS process. 24-pin plastic SSOP. The plating of pins is lead-free.(YAC526-EZ) YAC526 CATALOG CATALOG No.:LSI-4AC526A2 2003.10 YAC526 ■Terminal configration ZCEN1 ZCEN2 CSN SDATAI DGND REF DVSS SCLK SDATAO TE1 TE2 TE3 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 IN1 REF1A REF1B OUT1 AVDD AVSS AVSS AVDD OUT2 REF2B REF2A IN2 www.DataSheet4U.com 24 pin SSOP Top View ■Terminal function No. Name 1 ZCEN1 I/O Function I Zero-cross control input 1. Select one from four types of zero-cross modes including non-zerocross mode. When changing zero-cross modes during operation, set the system so that it changes at 1 second or more after the rise of CSN signal. 2 ZCEN2 I Zero-cross control input 2. Select one from four types of zero-cross modes including non-zerocross mode. When changing zero-cross modes during operation, set the system so that it changes at 1 second or more after the rise of CSN signal. 3 CSN I Chip select input 4 SDATAI I Serial data input 5 DGND − Digital ground 6 REF O Reference voltage output for digital For attaining stabilization, connect this terminal to DVSS terminal through a capacitance of 10µF or higher (CREF). And please do not use this terminal output for the drive purpose of an external circuit. 7 DVSS − Minus power supply for digital (-6.0V Typ.) 8 SCLK I Serial clock input 9 SDATAO OD Serial data output Serial data are outputted from this terminal when CSN pin is "L" level. This terminal becomes high-impedance state when CSN pin is "H". Since it is an open drain output pin, pull it up through a resistor to the power supply voltage (to be AVDD or less) of a device to be connected. Do not allow output current of 1.5mA or over. 10 TE1 I Test terminal (Pull-down) Non connection or connect to DGND terminal. 11 TE2 I Test terminal (Pull-down) Non connection or connect to DGND terminal. 12 TE3 I Test terminal (Pull-down) Non connection or connect to DGND terminal. 13 IN2 AI ch2 analog input The output impedance of input signal source is used less than 10kΩ. When avoid the use of this terminal, connect to ground. 14 REF2A AI ch2 analog reference voltage input A Connect to ground directly. 15 REF2B AI ch2 analog reference voltage input B Connect to ground directly. 16 OUT2 AO ch2 analog output 17 AVDD − Plus power supply for analog (+6.0V Typ.) 18 AVSS − Minus power supply for analog (-6.0V Typ.) 19 AVSS − Minus power supply for analog (-6.0V Typ.) 20 AVDD − Plus power supply for analog (+6.0V Typ.) 21 OUT1 AO ch1 analog output 22 REF1B AI ch1 analog reference voltage input B Connect to ground directly. 23 REF1A AI ch1 analog reference voltage input A Connect to ground directly. 24 IN1 AI ch1 analog input The output impedance of input signal source is used less than 10kΩ. When avoid the use of this terminal, connect to ground. Note A: analog terminal, OD: Open drain output terminal, "L" level means VIL, "H" level means VIH. 2 YAC526 ■Block diagram IN1 Vol B: 10kΩ 0〜-95dB 0〜+31.5dB OPAmp 100Ω OUT1 REF1B REF1A Vol A: 15kΩ ...

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