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YAMAHA CORPORATION
YAMAHA CORPORATION

YAC523 Datasheet Preview

YAC523 Datasheet

Electric Variable Resistance 2

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YAC523 pdf
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.
31.5dB95.0dB, MUTE (0.5dB/step, 255 steps)
Maximum input signal amplitude
4.2Vrms (±6V power supply)
Low distortion (THD)
0.0004typ. (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




YAMAHA CORPORATION
YAMAHA CORPORATION

YAC523 Datasheet Preview

YAC523 Datasheet

Electric Variable Resistance 2

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YAC523 pdf
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




YAMAHA CORPORATION
YAMAHA CORPORATION

YAC523 Datasheet Preview

YAC523 Datasheet

Electric Variable Resistance 2

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YAC523 pdf
YAC523
Terminal function
No. Name I/O
Function
1 AVSS Minus power supply for analog (-6.0V Typ.)
2 AVDD Plus power supply for analog (+6.0V Typ.)
3 IN1
4 IN2
5 IN3
6 IN4
AI ch1 analog input
AI ch2 analog input
AI ch3 analog input
AI ch4 analog input
When avoid the use of this terminal, connect to ground.
And please use the output impedance of the source of input
signal less than 2.2kΩ.
7 IN5
AI ch5 analog input
8 IN6
AI ch6 analog input
9 IN7
AI ch7 analog input
10 AVDD Plus power supply for analog (+6.0V Typ.)
11 AVSS Minus power supply for analog (-6.0V Typ.)
12 REF7B AI ch7 analog reference voltage input 7B Connect to ground directly.
13 REF7A AI ch7 analog reference voltage input 7A Connect to ground through 33μF.
14 REF6B AI ch6 analog reference voltage input 6B Connect to ground directly.
15 REF6A AI ch6 analog reference voltage input 6A Connect to ground through 33μF.
www.DataSh1e6et4RUEF.c5oBm AI ch5 analog reference voltage input 5B Connect to ground directly.
17 REF5A AI ch5 analog reference voltage input 5A Connect to ground through 33μF.
18 REF4A AI ch4 analog reference voltage input 4A Connect to ground through 33μF.
19 REF4B AI ch4 analog reference voltage input 4B Connect to ground directly.
20 REF3A AI ch3 analog reference voltage input 3A Connect to ground through 33μF.
21 REF3B AI ch3 analog reference voltage input 3B Connect to ground directly.
22 REF2A AI ch2 analog reference voltage input 2A Connect to ground through 33μF.
23 REF2B AI ch2 analog reference voltage input 2B Connect to ground directly.
24 REF1A AI ch1 analog reference voltage input 1A Connect to ground through 33μF.
25 REF1B AI ch1 analog reference voltage input 1B Connect to ground directly.
26 NC
Non connection or connect to ground.
27 NC
Non connection or connect to ground.
28 OUT7 AO ch7 analog output
29 OUT6 AO ch6 analog output
30 OUT5 AO ch5 analog output
31 OUT4 AO ch4 analog output
32 OUT3 AO ch3 analog output
33 OUT2 AO ch2 analog output
34 OUT1 AO ch1 analog output
35 NC
Non connection or connect to ground.
36 NC
Non connection or connect to ground.
37 AVSS Minus power supply for analog (-6.0V Typ.)
38 ZCEN1 I Zero-cross control input 1. Select one from four types of zero-cross modes including non-zero-
cross 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.
39 ZCEN2 I Zero-cross control input 2. Select one from four types of zero-cross modes including non-zero-
cross 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.
40 CSN
I Chip select input
41 SDATAI I Serial data input
42 SCLK
I Serial clock input
43 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.
44 TE2
I Test terminal Non connection or connect to DGND terminal.
45 TE1
I Test terminal Non connection or connect to DGND terminal.
46 DGND Digital ground
47 REF
O Reference voltage output for digital For attaining stabilization, connect this terminal to
AVSS 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.
48 AVSS Minus power supply for analog (-6.0V Typ.)
Note A: analog terminal, OD: Open drain output terminal, "L" level means VIL, "H" level means VIH.
3




Part Number YAC523
Description Electric Variable Resistance 2
Maker YAMAHA CORPORATION
Total Page 16 Pages
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