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YAMAHA CORPORATION
YAMAHA CORPORATION

YAC526 Datasheet Preview

YAC526 Datasheet

Electric Variable Resistance 3

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YAC526 pdf
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
www.DataSfhaecteotr4cUa.ncobme obtained.
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.
31.5dB95.0dB, MUTE (0.5dB/step, 255 steps)
Maximum input signal amplitude
4.2Vrms (±6V power supply)
Low distortion (THD)
0.0002typ. (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



YAMAHA CORPORATION
YAMAHA CORPORATION

YAC526 Datasheet Preview

YAC526 Datasheet

Electric Variable Resistance 3

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YAC526 pdf
Terminal configration
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ZCEN1
ZCEN2
CSN
SDATAI
DGND
REF
DVSS
SCLK
SDATAO
TE1
TE2
TE3
1
2
3
4
5
6
7
8
9
10
11
12
YAC526
24 IN1
23 REF1A
22 REF1B
21 OUT1
20 AVDD
19 AVSS
18 AVSS
17 AVDD
16 OUT2
15 REF2B
14 REF2A
13 IN2
Terminal function
24 pin SSOP Top View
No. Name
1 ZCEN1
I/O Function
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.
2 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.
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


Part Number YAC526
Description Electric Variable Resistance 3
Maker YAMAHA CORPORATION
Total Page 14 Pages
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