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YAMAHA CORPORATION |
YAC523
EVR2
Electric Variable Resistance 2
■Outline
YAC523 (EVR2) is a 7ch 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
www.DataSfhaecteotr4cUa.ncobme obtained.
YAC523 is able to control each channel through a serial data interface in 255 steps at 0.5dB per step, and can
allow configuration of a system with 8 channels or more by using a daisy chain connection.
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 7channel 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)
0.0004% 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.
48-pin plastic LQFP (YAC523-VZ)
YAC523CATALOG
CATALOG No.:LSI-4AC523A2
2003.5
■Terminal configration
YAC523-VZ
YAC523
AVSS
ZCEN1
ZCEN2
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SDATAI
SCLK
SDATAO
TE2
TE1
DGND
REF
AVSS
37
38
39
40
41
42
43
44
45
46
47
48
24 REF1A
23 REF2B
22 REF2A
21 REF3B
20 REF3A
19 REF4B
18 REF4A
17 REF5A
16 REF5B
15 REF6A
14 REF6B
13 REF7A
<48 pin LQFP TopView>
2
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