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參數(shù)資料
| 型號： | TS2012EIJT |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 2.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA16 |
| 封裝： | 2.10 X 2.10 MM, 0.50 MM PITCH, ROHS COMPLIANT, FLIP CHIP PACKAGE, 16 PIN |
| 文件頁數(shù)： | 14/33頁 |
| 文件大?。?/td> | 656K |
| 代理商： | TS2012EIJT |
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TS2012FC
Application information
21/33
4
Application information
4.1
Differential configuration principle
The TS2012 is a monolithic fully-differential input/output class D power amplifier. The
TS2012 also includes a common-mode feedback loop that controls the output bias value to
average it at VCC/2 for any DC common mode input voltage. This allows the device to
always have a maximum output voltage swing, and by consequence, maximize the output
power. Moreover, as the load is connected differentially compared with a single-ended
topology, the output is four times higher for the same power supply voltage.
The advantages of a full-differential amplifier are:
●
high PSRR (power supply rejection ratio),
●
high common mode noise rejection,
●
virtually zero pop without additional circuitry, giving a faster start-up time compared to
conventional single-ended input amplifiers,
●
easier interfacing with differential output audio DACs,
●
no input coupling capacitors required thanks to the common mode feedback loop.
4.2
Gain settings
In the flat region of the frequency-response curve (no input coupling capacitor or internal
feedback loop + load effect), the differential gain can be set to 6, 12 18, or 24 dB, depending
on the logic level of the G0 and G1 pins, as shown in Table 8.
Note:
Between pins G0, G1 and GND there is an internal 300 k
Ω (+/-20%) resistor. When the pins
are floating, the gain is 6 dB. In full standby (left and right channels OFF), these resistors
are disconnected (HiZ input).
4.3
Common mode feedback loop limitations
As explained previously, the common mode feedback loop allows the output DC bias voltage
to be averaged at VCC/2 for any DC common mode bias input voltage.
common mode feedback loop can fulfil its role only within the defined range.
Table 8.
Gain settings with G0 and G1 pins
G1
G0
Gain (dB)
Gain (V/V)
006
2
01
12
4
10
18
8
1
24
16
相關PDF資料 |
PDF描述 |
|---|---|
| TS2012IQT | 2.8 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC20 |
| TS34119CDC3 | 2 CHANNEL, AUDIO AMPLIFIER, PDIP8 |
| TS34119CSRL | 2 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TS3431BIZ-AP | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.24 V, PBCY3 |
| TS3431IZ | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.24 V, PBCY3 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TS2012FC | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Filter-free flip-chip stereo 2x2.5 W class D audio power amplifer |
| TS2012IQT | 功能描述:音頻放大器 FILTER-FREE STEREO 2X2.8 CLASS D P AMP RoHS:否 制造商:STMicroelectronics 產(chǎn)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 |
| TS2012IQT-CUT TAPE | 制造商:ST 功能描述:TS2012 Series 2.8 W Filter-Free Stereo Class D Audio Power Amplifier - QFN-20 |
| TS2012-W1 | 制造商:Black Box Corporation 功能描述:1 YEAR WARRANTY FOR TS2012 |
| TS2012-W3 | 制造商:Black Box Corporation 功能描述:3 YEAR WARRANTY FOR TS2012 |
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