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參數(shù)資料
| 型號： | SA58635UK |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 2 x 25 mW class-G stereo headphone driver with I2C-bus volume control |
| 中文描述： | AUDIO AMPLIFIER, PBGA16 |
| 封裝： | 1.70 X 1.70 MM, 0.56 MM HEIGHT, WLCSP-16 |
| 文件頁數(shù)： | 14/30頁 |
| 文件大?。?/td> | 277K |
| 代理商： | SA58635UK |
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SA58635_1
NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 01 — 26 March 2010
21 of 30
NXP Semiconductors
SA58635
2
× 25 mW class-G stereo headphone driver
13. Application information
13.1 Power supply decoupling considerations
The SA58635 is a stereo class-G headphone driver amplifier that requires proper power
supply decoupling to ensure the rated performance for THD+N and power efficiency. To
decouple high frequency transients, power supply spikes and digital noise on the power
bus line, a low Equivalent Series Resistance (ESR) capacitor, of typically 1
μF is placed
as close as possible to the AVDD terminals of the device. It is important to place the
decoupling capacitor at the power pins of the device because any resistance or
inductance in the PCB trace between the device and the capacitor can cause a loss in
efficiency. 10
μF or greater capacitors are usually not required due to high PSRR of the
SA58635.
13.2 Input capacitor selection
The SA58635 does not require input coupling capacitors when used with a differential
audio source that is biased from
1.3 V to +1.3 V. In other words, the input signal must be
biased within the common-mode input voltage range. If high-pass filtering is required or if
it is driven using a single-ended source, input coupling capacitors are required.
The 3 dB cut-off frequency is created by the input coupling capacitors and the input
resistance of the SA58635. Ci is the value of the input coupling capacitors. The input
resistance (Ri) of the SA58635 is a function of amplifier gain; it will vary from
approximately 11.06 k
Ω (minimum) to 28.47 kΩ (maximum) (see Table 14).
Fig 25. Typical application
002aae120
INLP
INLN
CPP
CPN
SDA
SCL
AGND
SA58635
AVDD
SW
HPVDD
HPVSS
INRP
INRN
3.3
μH
10
μF
2.3 V to 5.5 V
AUDIO
SOURCE
1
μF
1
μF
1
μF
1
μF
2.2
μF
2.2
μF
I2C-bus
to headphone jack
OUTL
OUTR
SGND
shield
ESD
ASIP
A1
A2
B2
C2
C1
IP5311CX5/LF
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SA58637BS | 2 x 2.2 W BTL audio amplifier |
| SA58670ABS | 2.1 W-channel stereo class-D audio amplifier |
| SA58670BS | 2.1 W-channel stereo class-D audio amplifier |
| SA58672TK | 3.0 W mono class-D audio amplifier |
| SA58672UK | 3.0 W mono class-D audio amplifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA58635UK,027 | 功能描述:音頻放大器 2x25mW cls-G stereo headphone driver 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| SA58637 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2 X 2.2 W BTL audio amplifier |
| SA58637BS | 制造商:NXP Semiconductors 功能描述:AMP AUDIO 2.2W STER D 20HVQFN 制造商:NXP Semiconductors 功能描述:AMP, AUDIO, 2.2W, STER, D, 20HVQFN |
| SA58637BS,118 | 功能描述:音頻放大器 DUAL 2.2W/CH. BTL 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| SA58637BS118 | 制造商:NXP Semiconductors 功能描述:IC AUDIO AMP AB 2.2W SON-20 |
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