simple yet versatile - yamaha...
TRANSCRIPT
*1: less than 8V supply available only for 8Ω or larger load
1μF1μF220μF
5V to 18V*1
PVDDPL PVSSL PVDDML
1μF1μF
OCPOTP
UVLODCDETCKDET
Rch.
Lch
Rch
Class-D
DC CutFilter
fs32kHz
44.1kHz48kHz
DynamicElementMatching
X4 FSOver Sampling
10Hz
MuteControl
Quick Mute
DigitalControl
DigitalAudio I/F
Protection
Regulator REFA
REFA
REFA
OUTPL
OUTML
PROTN
OUTPR
OUTMR
1μF
BTL
4Ω~
Lch.
BTL
4Ω~
47kΩ
3.3V
3.4V
ControlI/F
DEM DAC
YDA176(D-507DL)
OutputSCLK
LRCLK
MCK
MUTEN
SLEEPN
CKMOD
MONO
SDATA
TEST
PLIMIT2
PLIMIT1
GAIN
SoC
Output MuteControl
Shut-downControl
Stereo/MonoSelect
Carrier FrequencyControl
Gain SettingPower Limit
Setting
PowerLimiter
Multi steps
VolumeSelector
Multi steps
Class-D
PVDDPRAVSSDVSS PVSSR PVDDMR
APPLICATION DIAGRAMAPPLICATION DIAGRAM
DIGITAL INPUT STEREO 15W DIGITAL AUDIO POWER AMPLIFIERDIGITAL INPUT STEREO 15W DIGITAL AUDIO POWER AMPLIFIER
Simple, yet VersatileSimple, yet Versatile
Applications
PACKAGEPACKAGE
BOTTOM VIEW5.00mm
0.50mm
5.00
mm
We did everything to reduce the part count. Just hook up the loudspeakers, and you get a high-fidelity, high-power amplifier. This small-package device has a variety of functions such as an output power limiter that is configurable with 63 levels, gain adjustments that can be specified as a distortion level for a given power limiter level, and monaural mode that allows channel selection. Best fitted for any application with most added values.
We did everything to reduce the part count. Just hook up the loudspeakers, and you get a high-fidelity, high-power amplifier. This small-package device has a variety of functions such as an output power limiter that is configurable with 63 levels, gain adjustments that can be specified as a distortion level for a given power limiter level, and monaural mode that allows channel selection. Best fitted for any application with most added values.
LCD flat TVs
PC monitors
Stereo components
Home theatre systems
Desktop PCs
Key Specifications and FeaturesMonaural source can be selected fromthe channels on digital audio data.Protection circuitry for any-pin shortsUnrivaled audio performance in its class・THD+N=0.05% , Noise Level=50μVrms
Comprehensive protection circuitryOvercurrent protect, overtemperature protect,undervoltage lockout, DC-output protect,stopped-clock protect
Instantaneous Maximum Output Power・15Wx2-ch (15V supply, 8Ω, THD+N=10%)・25Wx1-ch (15V supply, 4Ω, THD+N=10%, Mono)
Digital audio interfaceI2S:24bit, fs=32kHz,44.1kHz,48kHzThree levels of fixed gain or five levels adjustedfor the power-limit-level and distortion-level63 power limit levels(TBD) configurablewith pin strapping
PBDA176A-001-01-e
15V 8Ω15W
MAX
18V5V to
VDD
OTP OCPUVLO DCDET CKDET
PROTECTION
0.05%
THD+ NSNR INPUT
2CH2CHl2S
OUTPUT
105dB
Power Limit
63steps
3.50mm
3.50
mm
QFN32 (YDA176-QZ)
Semiconductor Div. 203 Matsunoki-jima, Iwata, Shizuoka 438-0192 Japan
Customer ServiceHead Quarter TEL:0539-62-4918 FAX:0539-62-5054Tokyo Office TEL:03-5488-5431 FAX:03-5488-5088Osaka Office TEL:06-6465-0325 FAX:06-6465-0391
The content is subject to change without notice.Unauthorized use of this document is prohibited.These introductory informations cannot be used for designs.Check with us for technical ones.Brand and product names used are trademarks of their respective holders.
•••
•http://www.yamaha.co.jp/product/lsi/
Created in May 2012 Document Code:PBDA176A-001-01-e
Supply Voltage 5V to 18V(less than 8V supply available only for 8Ω or larger load)
15Wx2-ch (VDDP =15V, RL =8Ω,THD+N=10%)
25Wx1-ch (VDDP =15V, RL =4Ω,THD+N=10%, Mono)
10Wx2-ch (VDDP =12V, RL =8Ω,THD+N=10%)
With Power Limit
Output beyond speaker's rated power Sets a limit on peak-to-peak voltage
No Power Limit
YDA181-TZYDA181-TZYDA181-TZYDA181-TZYDA181-TZYDA181-TZHotHot CoolCool
InstantaneousMaximum
Power
90dB (VDDP =12V, RL =8Ω,1kHz)CS
105dB (VDDP =12V, RL =8Ω)SNR
DIGITAL INPUT STEREO 15WDIGITAL AUDIO POWER AMPLIFIER
Substantially Reduced System FootprintYDA176 integrates functions previously performed by system components as circuitry, saving the PCB real estate.
Top-Notch Power Efficiency Power Limiter Maintains Sound QualityLimiting output peak-to-peak voltage protects connected speakers and prevents overheating of the device. Aliasing and other digital artifacts are reduced with digital processing. Pin strapping selects one of 63 power limit levels.
※The count is for the simplest configuration, and maybe different for particular applications.
Over 90% power efficiency achieved with the use of low-on-resistance power MOSFETs. So cool to run that continuous 15W output is possible without requiring a heat sink.※VDDP = 15 V, RL = 8Ω, Ta = 70°C, four-layer PCB
Thorough Protection Against Short CircuitsShort-circuiting of any two pins causes no fire or smoke.
Fail-safeOperation
Low HeatGeneration
Typical PCB layout
Typical PCB layout
Competitor’s component count: 47 YDA176 component count: 9
Amplifier
Capacitor
LC Filter BypassCapacitor
Resistor1608 size1005 size
Beads(2 in 1)
YDA1765mm
5mm
Beads(2 in 1)
・Supply noise coupling minimized with feedback design : Just two capacitors, 10 μF and 1μF, achieve minimal decoupling.・Better slew-rate control : Eliminates the need for LC output filters; just needs ferrite beads for typical applications.・Complementary MOSFET output stage : No need for bootstrap capacitors as in NMOS-only stages.・All these functions in one small package : Just 5mm x 5mm.
220μF
220μF