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參數(shù)資料
| 型號： | TPA0172PWP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO24 |
| 封裝： | GREEN, PLASTIC, HTSSOP-24 |
| 文件頁數(shù)： | 21/36頁 |
| 文件大小： | 885K |
| 代理商： | TPA0172PWP |
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TPA0172
2W STEREO AUDIO POWER AMPLIFIER
WITH I2C BUS
SLOS327C AUGUST 2000 REVISED MAY 2001
28
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
slave address
The slave address for the TPA0172 consists of 7 bits of address information along with 1 bit, the LSB, reserved
for read/write information. There are eight possible addresses (including the read/write bit) for this device that
can be selected with the external A1 and A0 address pins. The most significant 5 bits of the address are fixed.
Table 7 lists the possible addresses for the TPA0172.
Table 7. Valid Slave Addresses
FIXED ADDRESS
SELECTABLE WITH
ADDRESS PINS
READ/WRITE
BIT
BIT 7 (MSB)
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
(A1)
BIT 1
(A0)
BIT 0
(R/W)
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
gain register operation
The gain of the TPA0172 ranges from 20 dB to 60 dB in 64 1.25-dB steps. At power-up, both the right and left
channels are set at 60 dB. The truth table shown in Table 8 gives examples of valid values that may be read
from or written to the four gain setting registers. Note that the amplifier is muted if either bit 7 or bit 6 is set.
Furthermore, to avoid any unwanted clicks or pops, the gain settings should not be changed until the amplifier
has completed the power-up sequence, which can be determined by monitoring bit 7 of the mask register. When
the bit goes to 0, the power-up sequence is complete.
Table 8. Gain Settings Truth Table
GAIN (dB)
BIT 7
(MSB)
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
(LSB)
20
0
18.75
0
1
17.5
0
1
0
16.25
0
1
…
57.5
0
1
0
1
58.75
0
1
0
60
0
1
85 (mute)
1
X
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TPA0172PWPG4 | 功能描述:音頻放大器 Stereo Class-AB RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA0172PWPR | 功能描述:音頻放大器 Stereo Class-AB RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA0172PWPRG4 | 功能描述:音頻放大器 Stereo Class-AB RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA02 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Power Operational Amplifier |
| TPA0202 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2-W STEREO AUDIO POWER AMPLIFIER |
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