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STA350BWTR Datasheet(PDF) 9 Page - STMicroelectronics

Part # STA350BWTR
Description  2.1-channel high-efficiency digital audio system Sound TerminalR
PDF  94 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA350BWTR Datasheet(HTML) 9 Page - STMicroelectronics

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 9 / 94 page
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DocID018572 Rev 7
9/94
STA350B, STA350BW
List of figures
94
List of figures
Figure 1.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 2.
Pin connection PowerSSO-36 (top view for STA350BW, bottom view for STA350B) . . . . 14
Figure 3.
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 4.
Power-on sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 5.
Power-off sequence for pop-free turn-off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 6.
Demonstration board, 2.0 channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 7.
Mono parallel BTL schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 8.
THD+N vs. output power (VCC = 25 V, load = 6 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 9.
THD+N vs. output power (VCC = 18 V, load = 8 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 10.
Output power vs. VCC (load = 6 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 11.
Output power vs. VCC (load = 8 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 12.
Efficiency vs. output power (VCC = 25 V, load = 6 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 13.
Efficiency vs. output power (VCC = 25 V, load = 8 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 14.
THD+N vs. output power (VCC = 25 V, load = 3 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 15.
Output power vs. VCC (load = 3 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 16.
Efficiency vs. output power (VCC = 26 V, load = 3 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 17.
Efficiency vs. output power (VCC = 18 V, load = 3 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 18.
Timing diagram for SAI interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 19.
Left and right processing - part 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 20.
Processing - part 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 21.
Write mode sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 22.
Read mode sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 23.
OCFG = 00 (default value) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 24.
OCFG = 01 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 25.
OCFG = 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 26.
OCFG = 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Figure 27.
Output mapping scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Figure 28.
2.0 channels (OCFG = 00) PWM slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Figure 29.
2.1 channels (OCFG = 01) PWM slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Figure 30.
2.1 channels (OCFG = 10) PWM slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Figure 31.
Basic limiter and volume flow diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Figure 32.
B2DRC scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Figure 33.
EQDRC scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Figure 34.
Extra resolution volume scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Figure 35.
Biquad filter structure with quantization error noise-shaping . . . . . . . . . . . . . . . . . . . . . . . 83
Figure 36.
Double-layer PCB with 2 copper ground areas and 24 via holes . . . . . . . . . . . . . . . . . . . 86
Figure 37.
PowerSSO-36 power derating curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Figure 38.
PowerSSO-36 EPD package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Figure 39.
PowerSSO36 (slug-up) package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90



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