YDA147 Datasheet PDF - YAMAHA CORPORATION
| Part Number | YDA147 | |
| Description | STEREO 5W-15W DIGITAL AUDIO POWER AMPLIFIER | |
| Manufacturers | YAMAHA CORPORATION | |
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YDA147
D- 515
STEREO 5W-15W DIGITAL AUDIO POWER AMPLIFIER
Overview
YDA147 (D-515) is a high-efficiency digital audio power amplifier IC with the maximum output of 15W × 2ch.
YDA147 has a “Pure Pulse Direct Speaker Drive Circuit” that directly drives speakers while reducing distortion of
pulse output signal and reducing noise on the signal, which realizes the highest standard low distortion rate
characteristics and low noise characteristics among digital amplifier ICs in the same class.
In addition, supporting filterless design allows circuit design with fewer external parts to be realized depending on use
conditions.
YDA147 features Power Limit Function, Non-clip Function, and DRC (Dynamic Range Control) Function that were
developed by Yamaha original digital amplifier technology.
YDA147 has overcurrent protection function for speaker output terminals, high temperature protection function, and
lowsupply voltage malfunction prevention function.
Features
Operating supply voltage range
PVDD: 8.0V to 16.5V
Maximum momentary output
20 W×2ch (VDDP=14V, RL=4Ω, THD+N=10%)
15 W×2ch (VDDP=12V, RL=4Ω, THD+N=10%)
Maximum continuous output
15 W*1×2ch
10.5W*1×2ch
(VDDP=15V, RL=8Ω, THD+N=10%, Ta=70°C)
(VDDP=15V, RL=4Ω, THD+N=10%, Ta=25°C)
Distortion Rate (THD+N)
0.01 % (VDDP=12V, RL=8Ω, Po=0.1W, 1kHz)
Residual Noise
48µVrms (VDDP=12V, GAIN[1:0]=L,L, NCDRC[1:0]=L,L)
Efficiency
92 % (VDDP=12V, RL=8Ω)
S/N Ratio
105 dB (VDDP=12V, GAIN[1:0]=L,L, NCDRC[1:0]=L,L)
Channel separation
-80 dB (VDDP=12V, GAIN[1:0]=L,L, NCDRC[1:0]=L,L)
PSRR
60dB (VDDP=12V,Vripple=100mV, 1kHz, GAIN[1:0]=L,L, NCDRC[1:0]=L,L)
Non-clip function/DRC function (switchable)
Power limit function
Clock External Synchronization Function
Master/Slave Synchronization Function using clock outputs
Over-current Protection Function, High Temperature Protection Function,
Low Voltage Malfunction Prevention Function, and DC Detection Function
Sleep Function using SLEEPN terminal and Output Mute Function using MUTEN terminal
Stereo/Monaural Switching Function
Spread Clock Function
Pop Noise Reduction Function
Package
Lead-free 48-pin Plastic SQFP (Exposed stage)
Note) *1: A value based on Yamaha's board implementation conditions (See Note *2 of page 25)
YDA147 CATALOG
CATALOG No.:LSI-4DA147A41
2007.9
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YDA147
Functional Description
Digital Amplifier Function
YDA147 has digital amplifiers with analog input, PWM pulse output, the maximum output of 20W × 2ch.
Adopting “Pure Pulse Direct Speaker Drive Circuit” reduces distortion and noise on PWM pulse output signal.
Digital Amplifier Gain
The total gain of the digital amplifier varies depending on operation modes, as shown below.
NCDRC1 NCDRC0
LL
LH
HL
HH
GAIN1
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
GAIN0
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
Total Gain
+22dB
+28dB
+34dB
+16dB
+34dB
+40dB
+46dB
+28dB
+34dB
+40dB
+46dB
+28dB
+34dB
+40dB
+46dB
+28dB
Operation Mode
Normal mode
Non-clip: OFF
DRC: OFF
Non-clip mode
DRC1 mode
DRC2 mode
Audio Signal Input
For a differential input, the signal should be input to INLP and INLM terminals (Lch) and to INRP and INRM terminals
(Rch) through a DC-cut capacitor (CIN).
On the contrary, for a single-ended input, the signal should be input to INLP terminal (Lch) and to INRP terminal (Rch)
through a DC-cut capacitor (CIN). At this time, INLM and INRM terminals should be connected to AVSS through DC-cut
capacitors (CIN) with the same value.
In the differential input mode, use signal sources with the same impedance to reduce pop-noise. Its value should be 10kΩ or
less. Use a DC-cut capacitor (CIN) of 1µF. (The capacitance value should be less than 1.5µF throughout the operating
temperature range.)
(Cautions)
When inputting audio signals in Power-off state ( PVDD < VHUVLL ) or Sleep state, current may flow toward the former
device from YDA147's ground, through each protection circuit of analog pins (INLP, INLM, INRP, and INRM).
For this reason, audio signals should not be input in Power-off state ( PVDD < VHUVLL ) or Sleep state.
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for YDA147 electronic component. |
| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ YDA147.PDF Datasheet ] | |
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