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YDA176 PDF Datasheet - YAMAHA

Part Number YDA176
Description DIGITAL INPUT STEREO 15W DIGITAL AUDIO POWER AMPLIFIER
Manufacturers YAMAHA 
Logo YAMAHA Logo 
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YDA176 datasheet, circuit
PRELIMINARY
YDA176
Application Manual
D-507DL DIGITAL INPUT STEREO 15W DIGITAL AUDIO POWER AMPLIFIER
YDA176 APPLICATION MANUAL
CATALOG No. LSI-6DA176A10
2012.6

1 page
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YDA176 pdf, schematic
PRELIMINARY
YDA176
6DA176A10
2

2 Page
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YDA176 equivalent
PRELIMINARY
YDA176
9. Package Information.................................................................................................................38
10. Appendix ................................................................................................................................39
10.1. Various Audio Characteristics................................................................................................... 39
10.1.1 Measurement Environment .......................................................................................................... 39
6DA176A10
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YDA176 diode, scr
4 Pin Descriptions
PRELIMINARY
YDA176
4. Pin Descriptions
The table below shows the pin function list.
Table 4-1 Pin Function
No. Name
I/O*1)
Function
1 REFA
AO Internal Regulator Output pin
2 AVSS
GND
Analog GND pin
3 TEST
I This pin must be connected to GND.
4 DVSS
GND
Digital GND pin
5 MCK
I Master Clock Input Pin
6 SDATA
I Audio Data Input Pin
7 SCLK
I Bit Clock Input Pin
8 LRCLK
I Word Clock Input Pin
9 PVDDPR PVDD power Power pin for the digital amplifier output (Rch+)
10 OUTPR
O Digital Amplifier Output pin (Rch+)
11 OUTPR
O Digital Amplifier Output pin (Rch+)
12 PVSSR
GND
GND pin for the digital amplifier output (Rch)
13 PVSSR
GND
GND pin for the digital amplifier output (Rch)
14 OUTMR
O Digital Amplifier Output pin (Rch-)
15 OUTMR
O Digital Amplifier Output pin (Rch-)
16 PVDDMR PVDD power Power pin for the digital amplifier output (Rch-)
17 SLEEPN
I Sleep Reset pin *2)
18 PROTN
O/D Error Flag Output pin
19 PLIMIT1
A Power Limit Setting Pin 1.
20 PLIMIT2
A Power Limit Setting Pin 2.
21 GAIN
A Gain Setting Pin.
22 CKMOD
I Clock Mode setting pin
23 MONO
A Stereo/Mono Setting Pin.
24 MUTEN
I Mute pin
25 PVDDML PVDD power Power pin for the digital amplifier output (Lch-)
26 OUTML
O Digital Amplifier Output pin (Lch-)
27 OUTML
O Digital Amplifier Output pin (Lch-)
28 PVSSL
GND
GND pin for the digital amplifier output (Lch)
29 PVSSL
GND
GND pin for the digital amplifier output (Lch)
30 OUTPL
O Digital Amplifier Output pin (Lch+)
31 OUTPL
O Digital Amplifier Output pin (Lch+)
32 PVDDPL PVDD power Power pin for the digital amplifier output (Lch+)
(Note) *1: I: Input pin, O: Output pin, A: Analog pin, O/D: Open-Drain output pin
PVDD power pins should be connected each other on the board. Likewise, GND pins should be
also connected each other on it.
Each output pin with the same name (OUTPR, OUTMR, OUTPL, and OUTML) should be
connected on the board.
*2: A voltage for supplying SLEEPN pin with “H” level should be applied from an external power
supply. Do not apply from REFA pin output.
6DA176A10
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YDA176 transistor, igbt
6 Operations Description
PRELIMINARY
YDA176
6.8. Quick Mute/Quick Start Function
Quick Mute/Quick Start function allows intermittent sound to be reduced significantly and uncomfortable
feeling to be removed by varying the output envelope at a slow rate at the time of MUTE ON/OFF.
Table 6-6 MUTEN pin setting
MUTEN pin
Mode
L Digital Amplifier Mute State
H Normal Operation State
By setting MUTEN pin to “L”, YDA176 performs Quick Mute operation (Decreasing the volume linearly by
taking 1024×1/fs), (16×96) / (carrier clock frequency)[s] later, it sets the digital amplifier output to WL (Weak
Low: a state grounded through a high-value resistance), resulting in Mute state (Output Disabled).
By setting MUTEN pin to “H”, YDA176 moves from the mute state to normal operation state while turned
down volume. Afterwards, the quick start operation (where the volume is increased linearly over 256×1/fs) is
executed. Mute recovery time from Mute state is tmrcv(typ.).
If the mute state is cancelled during the Quick Mute Sequence, Quick Start Sequence will start after the quick
mute sequence.
When the voltage at PVDD pin becomes lower than PVDD pin Shutdown Threshold Voltage (VHUVLL) in the
mute state, for shutting down the system safely, the amplifier output is set to WL (Weak Low : a state grounded
through a high-value resistance) after outputting a low signal for a given period of time.
OUTPUT
MUTEN pin
High
State of YDA176
Low
Quick Mute (1024×1/fs)
(16×96)/Carrier Clock Frequency[s]
Quick Mute Sequence
Normal Operation State
Mute State
Low High
Quick Start (256×1/fs)
Mute State Normal Operation State
< Figure 6-7 Quick Mute / Quick Start Function >
6DA176A10
21

21 Page





Information Total 30 Pages
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