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YDA131 Datasheet

  • YDA131

  • D- 1 STEREO 2.5W DIGITAL AUDIO POWER AMPLIFIER

  • 1355.86KB

  • 18頁(yè)

  • YAMAHA

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YDA131
D- 1
STEREO 2.5W DIGITAL AUDIO POWER AMPLIFIER
鈻燨utline
The YDA131 is the high efficient digital audio power amplifier IC that operates on a single 5V power supply.
This IC is capable of providing output power of 2.5W/channel, which is at the highest level as a device on a single 5V
power supply. By adopting Yamaha's proprietary modulation system, the device provides low distortion and high signal
to noise ratio at the highest level among digital amplifiers in the equivalent class.
This IC accepts analog signal, converts it into digital pulse by the digital modulation circuitry and outputs the signal from
the large current capacity buffers. The digital pulse signal that is outputted from the output buffer is converted into audio
signal through an external low pass filter, and sent to the speakers.
This IC has the overcurrent detection function that detects short-circuiting of speaker terminal end and the high
temperature detection function that detects abnormal high temperature.
With the overcurrent detection function, this IC generates a warning signal when the current that flows in the output
buffers of left and right channels exceeds a fixed value. With the high temperature detection function, this IC generates a
warning signal when the junction temperature becomes abnormal.
Furthermore, this IC builds in function that mute an audio output and shut off all functions of the IC. By this function,
power consumption is restrained at the minimum.
鈻燜eatures
銉籋igh
output power
2.5 W @ VDD=5.0V, 4鈩?(THD+N<10%)
銉籋igh
efficiency operation
85 % @ VDD=5.0V, R
L
=8鈩?/div>
75 % @ VDD=5.0V, R
L
=4鈩?/div>
銉籐ow
distortion(THD+N)
0.018 % @ Po=1.0W, 1kHz, R
L
=4鈩?/div>
銉籋igh
signal to noise ratio
103dB @ VDD=5.0V, Input sensitivity =1.0V, R
L
=4鈩?/div>
97dB @ VDD=5.0V, Input sensitivity=150mV, R
L
=4鈩?/div>
銉籐ow
consumption current
14.0 mA @ VDD=5.0V, no signal(no filter)
7.0 mA @ VDD=5.0V, at mute
1 碌A(chǔ)
@ VDD=5.0V, at sleep
銉籆hannel
separation
80dB @ 1kHz
銉籄ny
gain setting by external resistor
銉籄ny
setting of starting time by VREF capacitor
銉籗leep
function by SLEEP terminal
銉籓utput
mute function by MUTE terminal
銉籓ver
current detection function of speaker terminal end (Ground short-circuiting, Load short-circuiting)
銉籋igh
temperature detection function
銉籔op
noise suppression function at turn-on and turn-off
銉籄nalog
input/BTL(Bridge-Tied Load)output
銉?4-pin
plastic SSOP
Pin lead plating with Pd free (YDA13錛?EZ)
YDA131 CATALOG
CATALOG No.:LSI-4DA131A40
2004.12

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