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參數資料
| 型號： | TS4657IQT |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 2 CHANNEL, AUDIO AMPLIFIER, QCC20 |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, QFN-20 |
| 文件頁數： | 13/26頁 |
| 文件大小： | 1412K |
| 代理商： | TS4657IQT |
Application information
TS4657
20/26
Figure 50. Audio interface formats managed by the TS4657
4.2
Power-management unit
The TS4657 utilizes a power-management unit to supply its internal structures.
A self-generated negative supply enables the drivers to be powered from positive and
negative supplies, therefore increasing the amplitude of the output signal. This internal
negative supply switches at a higher frequency than traditional architectures, derived from
the master clock MCLK. This structure uses an original design that enables one to suppress
the flying or floating capacitors. Therefore, only four small ceramic X5R 10V 1-F
decoupling capacitors are necessary for VCCA/VCCD and VREGA/VREGD.
Furthermore, the self-generated negative supply allows the amplifier outputs to be centered
around zero, thus the bulky output coupling capacitors can be removed.
LRCLK
SDAT
BCLK
LEFT
RIGHT
0
1
15
14
MSB
LSB
16
1
14
MSB
LSB
16-bit word right data
015
16-bit Right justified data format: pin FORMAT1 = VIL, FORMAT2 = VIL
LRCLK
SDAT
BCLK
LEFT
RIGHT
0
1
n-1
n-2
MSB
LSB
n-bit word left data
1
n-2
MSB
LSB
n-bit word right data
0n-1
Up to 24-bit left-justified data format: pin FORMAT1 = VIL, FORMAT2 = VIH
-bit word left data
LRCLK
SDAT
BCLK
LEFT
RIGHT
0
1
n-1
n-2
MSB
LSB
32-bit word left data
1
n-2
MSB
LSB
32-bit word right data
0
n-1
Up to 24-bit IS data format: pin FORMAT1 = VIH, FORMAT2 = VIH
LRCLK
SDAT
BCLK
LEFT
RIGHT
0
1
n-1
n-2
MSB
LSB
n-bit word left data
1
n-2
MSB
LSB
n-bit word right data
0n-1
24-bit right-justified data format: pin FORMAT1 = VIH, FORMAT2 = VIL
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相關代理商/技術參數 |
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