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Details, datasheet, quote on part number:YDA131
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Datasheet text preview:
YDA131
D-1
STEREO 2.5W DIGITAL AUDIO POWER AMPLIFIER
Outline
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.
Features
High output power 2.5 W VDD=5.0V, 4 (THD+N<10%) High efficiency operation 85 % VDD=5.0V, RL=8 75 % VDD=5.0V, RL=4 Low distortion(THD+N) 0.018 % Po=1.0W, 1kHz, RL=4 High signal to noise ratio 103dB VDD=5.0V, Input sensitivity =1.0V, RL=4 97dB VDD=5.0V, Input sensitivity=150mV, RL=4 Low consumption current 14.0 mA VDD=5.0V, no signal(no filter) 7.0 mA VDD=5.0V, at mute 1 µA VDD=5.0V, at sleep Channel separation 80dB 1kHz Any gain setting by external resistor Any setting of starting time by VREF capacitor Sleep function by SLEEP terminal Output mute function by MUTE terminal Over current detection function of speaker terminal end (Ground short-circuiting, Load short-circuiting) High temperature detection function Pop noise suppression function at turn-on and turn-off Analog input/BTL(Bridge-Tied Load)output 24-pin plastic SSOP (YDA131-E)
YDA131CATALOG CATALOG No.:LSI-4DA131A3 2003.1
YDA131
Terminal configuration
YDA131-E VPL INL VREFL VSSL VDDL VSS PROT VDDR VSSR VREFR INR VPR 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 SLEEP VSSPL VDDPL OUTML VSSPL OUTPL OUTPR VSSPR OUTMR VDDPR VSSPR MUTE
24 pin SSOP Top View » Terminal functions
No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Name VPL INL VREFL VSSL VDDL VSS PROT VDDR VSSR VREFR INR VPR MUTE VSSPR VDDPR OUTMR VSSPR OUTPR OUTPL VSSPL OUTML VDDPL VSSPL I/O AO AI AO Lch gain control Lch audio input Lch voltage reference VSS for analog circuit of Lch VDD for analog circuit of Lch VSS for control circuit and protection circuit Warning output for protection function VDD for analog circuit of Rch VSS for analog circuit of Rch Rch voltage reference Rch audio input Rch gain control Output shut off control VSS for output buffer of Rch VDD for output buffer of Rch Negative output of Rch VSS for output buffer of Rch Positive output of Rch Positive output of Lch VSS for output buffer of Lch Negative output of Lch VDD for output buffer of Lch VSS for output buffer of Lch Operation shut off control Function
¼
- - -
O
- -
AO AI AO I
- -
O
-
O O
-
O
- -
I
24 SLEEP Note. A: Analog terminal 2
YDA131
Internal block diagram
VDDPL
VPL INL
1 2
19
OUTPL
Balanced Digital Modulation Unit (L channel)
VSSPL VDDPL
VREFL
3
21
OUTML
VSSPL
SLEEP
24
6
Pop Noise Rejection
MUTE PROT
13 7
Over Temperature Detection
Over Current Detection
6
SRFF
VDDPR
VPR INR
12 11
18
OUTPR
Balanced Digital Modulation Unit (R channel)
VSSPR VDDPR
VREFR
10
16
OUTMR
VSSPR
3
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