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YDA138 데이터시트 PDF




YAMAHA CORPORATION에서 제조한 전자 부품 YDA138은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 YDA138 기능
기능 STEREO 10W DIGITAL AUDIO POWER AMPLIFIER
제조업체 YAMAHA CORPORATION
로고 YAMAHA CORPORATION 로고


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YDA138 데이터시트, 핀배열, 회로
YDA138
D- 3
STEREO 10W DIGITAL AUDIO POWER AMPLIFIER
Overview
YDA138 (D-3) is a high efficient digital audio power amplifier IC that operates with a single 12V power supply.
An audio power amplifier with a maximum output of 10W (RL=8Ω)×2ch or 20W (RL=4Ω)×1ch can be configured
with one chip.
YDA138 has a “Pure Pulse Direct Speaker Drive Circuit” which directly drives speakers while reducing distortion of
pulse output signal and reducing noise on the signal, and realizes the highest standard low distortion rate characteristics
and low noise characteristics as 10W-class of output digital amplifier IC.
In addition, circuit design with fewer external parts can be made depend on the condition of use because corresponds to
filter less.
YDA138 has 50mW (RL=32Ω)×2ch Class AB headphone amplifiers.
YDA138 provides Over-current protection function for speaker output terminals, IC thermal protection function, POP
noise reduction function, and AM interference measures function as well as power-down function and output mute
function.
Features
Digital Amplifier
Continuous maximum output
10 W×2ch VDDP=12.0V, RL=8Ω, THD+N=10%
20 W×1ch VDDP=12.0V, RL=4Ω, THD+N=10%
Efficiency
www.DataSheet848U.c%omVDDP=12.0V, RL=8Ω, Po=10W
Distortion Rate (THD+N)
0.02 % VDDP=12.0V, RL=8Ω, Po=1.0W
S/N Ratio
103dB VDDP=12.0V, RL=8Ω, Po=10W, VOL[1:0]=H,H
Channel Separation
-70dB VDDP=12.0V, RL=8Ω, VOL[1:0]=H,H
Class AB Headphone Amplifier
Maximum output
50mW×2ch VDDP=12.0V, RL=32Ω, THD+N=10%
Distortion Rate(THD+N)
0.01 % @VDDP=12.0V, RL=32Ω, Pho=30mW
S/N Ratio
95dB VDDP=12.0V, RL=32Ω, Pho=20mW, VOL[1:0]=H,H
Others
Operating power supply range
9.0V to 13.5V
Multi-channel synchronizing operation by
Master/Slave switching function
Carrier frequency switching function
524kHz/466kHz
Sleep function with SLEEPN terminal
Output muting function with MUTEN terminal
Over-current protection function
Thermal protection function
Clock stop detection function
Pop noise reduction function
AM interference measures function
Analog input/BTL (Bridge-Tied Load) output
42-pin plastic SSOP
Pin lead plating with Pd free (YDA138-EZ)
YDA138 CATALOG
CATALOG No.:LSI-4DA138A20
2005.3




YDA138 pdf, 반도체, 판매, 대치품
Block diagram
YDA138
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YDA138 전자부품, 판매, 대치품
YDA138
Headphone Amplifier Function
YDA138 has class AB single-ended push-pull headphone amplifier. Headphone amplifier mode can be set by setting HP
terminal to H. Audio signal input terminal and voltage reference terminal is common to digital amplifier.
Connect DC-cut capacitor to headphone amplifier output terminal (HPOL and HPOR).
When a headphone amplifier is not used, HP terminal should be "L" and output terminal (HPOL, HPOR) should be "No
Connection".
First stage Amplifier Gain Setting function
Headphone amplifier is composed of the first stage amplifier of which gain setting is possible, and 0dB fixed-gain
amplifier. Gain of the first stage amplifier can be set by VOL[1:0] terminal.
Headphone Amplifier Gain Setting
VOL[1:0]
L,L
Gain
18dB
Input sensitivity
0.14V
Input Impedance
12.1kΩ
L,H
12dB
0.28V
22.0kΩ
H,L
6dB
0.56V
37.1kΩ
H,H
0dB
1.12V
56.5kΩ
Control Function
Sleep Function
When SLEEPN terminal is L, YDA138 enters the Sleep Mode.
In Sleep mode, all the circuit functions including 5V regulator are stopped to minimize the consumption current. At this
time, output stages of digital amplifier and headphone amplifier are disabled and PROTN and CKIO terminal output
becomes “Hi-Z”.
Mute Function
When MUTEN terminal is set to L while HP terminal is L, YDA138 enters the Digital Amplifier Mute mode. In this mode,
output stage of Digital Amplifier is disabled.
When MUTEN terminal is set to L while HP terminal is H, YDA138 enters the Headphone Amplifier Mute Mode. In this
mode, output stage of Headphone Amplifier outputs the reference voltage.
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Headphone Selection Function
When HP terminal is set to H, YDA138 enters the Headphone Amplifier mode. At this time, output stage of Digital
Amplifier is disabled. On the contrary, when HP terminal is set to L, YDA138 enters Digital Amplifier mode. At this time,
output of the Headphone Amplifier output is disabled.
When logic of HP terminal is changed, YDA138 restarts and as the result of it, all the protection states are cleared.
Monaural Selection Function
YDA138 enters the Monaural mode, when connecting VREFR terminal to REFA terminal and then connecting INR
terminal to AVSS terminal.
In Digital Amplifier Monaural ode, maximum continuous output 20W can be obtained by short-circuiting between
OUTPL terminal and OUTPR terminal and between OUTML terminal and OUTMR terminal to drive 4Ω load resistor.
In Headphone Amplifier Monaural Mode, HPOUTL terminal outputs signals and HPOUTR terminal is disabled.
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