YDA142 Datasheet, PDF (7/18 Pages) YAMAHA CORPORATION – D- 3D DIGITAL INPUT STEREO 9.5W DIGITAL AUDIO POWER AMPLIFIER

YDA142
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●Gain setting function
The output gain for a digital amplifier and LINEOUTL(R) can be set by GAIN[2:0] terminal and GAINA terminal.
Set the GAIN[2:0] as follows in accordance with a gain to use.
With GAIN[2:0]= “L, L, L” the output gain of a digital amplifier and LINEOUTL(R) can be set by a GAINA terminal
voltage. Set the GAINA terminal voltage as follows in accordance with a gain to use.
When the GAINA terminal is not used, it is fixed to GND.
GAIN[2:0] terminal gain setting
GAIN2 GAIN1 GAIN0
L
L
L
L
L
H
L
H
L
L
H
H
H
L
L
H
L
H
H
H
L
H
H
H
Digital Amplifier
Gain
GAINA terminal
priority
2dB
8dB
14dB
20dB
23dB
26dB
29dB
LINEOUTL(R)
Output Gain
GAINA terminal
priority
-15dB
-9dB
-3dB
3dB
6dB
9dB
12dB
GAINA terminal Gain setting
GAINA terminal voltage range Digital Amplifier
LINEOUTL(R)
(Voltage ratio to REFA voltage)
Gain
Output Gain
65.6% to 100.0%
32dB
15dB
64.0% to 67.2%
29dB
12dB
62.4% to 65.6%
26dB
9dB
60.8% to 64.0%
23dB
6dB
59.2% to 62.4%
20dB
3dB
57.6% to 60.8%
18dB
1dB
56.0% to 59.2%
16dB
-1dB
54.4% to 57.6%
14dB
-3dB
52.8% to 56.0%
12dB
-5dB
51.2% to 54.4%
10dB
-7dB
49.6% to 52.8%
8dB
-9dB
48.0% to 51.2%
6dB
-11dB
46.4% to 49.6%
4dB
-13dB
44.8% to 48.0%
2dB
-15dB
43.2% to 46.4%
0dB
-17dB
41.6% to 44.8%
-2dB
-19dB
40.0% to 43.2%
-4dB
-21dB
38.4% to 41.6%
-6dB
-23dB
36.8% to 40.0%
-8dB
-25dB
35.2% to 38.4%
-10dB
-27dB
33.6% to 36.8%
-12dB
-29dB
32.0% to 35.2%
-14dB
-31dB
30.4% to 33.6%
-16dB
-33dB
28.8% to 32.0%
-18dB
-35dB
27.2% to 30.4%
-20dB
-37dB
25.6% to 28.8%
-23dB
-40dB
24.0% to 27.2%
-26dB
-43dB
22.4% to 25.6%
-29dB
-46dB
20.8% to 24.0%
-32dB
-49dB
19.2% to 22.4%
-36dB
-53dB
17.6% to 20.8%
-40dB
-57dB
0%
to 19.2%
Mute
Mute
A full scale of DAC is 1Vrms(2.8Vpp). This is assumed to be 0dB and the gain is set.
For instance, when the gain of a digital amplifier is set to 14dB, and a full-scale signal of DAC is input, the digital amplifier
output becomes 5Vrms(14Vpp).
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