原标题：圣邦新推三款低失真度高品质音频POP音解决方案

　　圣邦微电子(SGMICRO)推出一系列低失真度高品质音频POP音解决方案，SGM4806、SGM4807和SGM4808。SGM4806和SGM4808属于串联POP音解决方案，工作电压范围2.7V~12V，无需隔直电容和偏置电压。SGM4807属于并联POP音解决方案，工作电压范围1.7V~5V。

　　开关机POP音、播放暂停和歌曲切换产生的POP音一直影响着音频产品的用户体验。常用的分立器件电路复杂、调试困难，体积较大。圣邦微电子(SGMICRO)针对这些业界存在多年的问题研发出抑制POP音的时序控制产品SGM4807和POP音抑制开关SGM4806、SGM4808。该系列产品具有体积小、失真度低，能较好地解决手机和其他音响产品的POP音问题。

　　圣邦微电子(SGMICRO)推出的POP音抑制系列产品SGM4806/7/8，属于无公害无铅环保产品，温度范围达到-40℃到+85℃扩展的工业标准。采用绿色CSP，QFN及SOIC封装，适用于自动化SMT生产及手工实验室验证。

【SGM4806】

SGM4806 Wide Power Supply Range, 2:1 MUX Input Audio Click-Pop Noise Eliminator

GENERAL DESCRIPTION

The SGM4806 is an audio click-pop eliminator that is designed to operate from a single2.7V to 12V power supply. Targeted applications include HiFi level audiosub-system in battery powered equipment or professional audio system. The SGM4806 has 2:1 Mux function and it supports dual channels HiFi stereo audio input.

The SGM4806 can pass -VCC to +VCC wide range positive and negative audio signals with very low distortion to support HiFi audio signals. The SGM4806 can eliminate the click-pop noise under the control of external processor.

The SGM4806 is available in Green WLCSP-1.27×2.13-15B, SOIC-16 and TQFN-4×4-16L packages. It operates over an ambient temperature range of -40℃ to +85℃.

PIN CONFIGURATIONS

FEATURES

• Wide Voltage Operation: 2.7V to 12V

• Low On-Resistance from Audio Signals Input to

Output: 0.8Ω (TYP)

• -VCC to +VCC Rail-to-Rail Low Distortion

Audio Signals Passing

• Fast Switching Times

• 2:1 MUX Input

• High Off-Isolation

• Very Low Crosstalk

• Very Low THD+N

• 1.8V Logic Compatible Control Pin

• 600kΩ Pull Low Resistors for all I/O Control Pin

• -40℃ to +85℃ Operating Temperature Range

• Available in Green WLCSP-1.27×2.13-15B,

SOIC-16 and TQFN-4×4-16L Packages

APPLICATIONS

Portable Devices

HiFi Audio System

ORDERING INFORMATION

SGM4806YG/TR

SGM4806YS16G/TR

SGM4806YTQE16G/TR

【SGM4807】

SGM4807 Shunt Mode Audio Click-Pop Eliminator

GENERAL DESCRIPTION

The SGM4807 is an audio Click-Pop eliminator for portable multimedia devices. Operating from a 1.7V to 5V power supply, the SGM4807 connects to the output of the existing system amplifier and provides a low-impedance path to ground during startup and shutdown. The inputs INL and INR accept voltage swings from +VCC to -VCC. The power-up and power-down transients are shunted to ground to prevent Clicks-Pops from becoming audible.

The SGM4807 features two low-impedance analog switches controlled by mute events that open and close the switches. The mute events include under-voltage of VCC and external power supply, power-up, power-down and high to low logical level change of nMUTE pin. The switches are open during normal operation and have no impact on the output signal. During startup and shutdown of the amplifier, the SGM4807 can be activated to short the outputs to ground and prevent Clicks-Pops from pulling current through the line-outs.

The SGM4807 is available in Green TDFN-2×2-8L, MSOP-8 and WLCSP-1.57×0.80-8B packages. It operates over an ambient temperature range of -40℃ to +85℃.

PIN CONFIGURATIONS

FEATURES

• Distortion-Free, Click-Pop Elimination

• 1.5μA (TYP) Supply Current

• 1.7V to 5V Single Supply Operation

• 600kΩ Pull-Low Resistor at nMUTE Pin

• Available in Green TDFN-2×2-8L, MSOP-8 and

WLCSP-1.57×0.80-8B Packages

• -40℃ to +85℃ Operating Temperature Range

APPLICATIONS

MobilePhones

Smart Phones

MobileInternet Devices

PortableGaming Consoles

PortableMedia Players

NotebookComputers

ORDERING INFORMATION

SGM4807YTDE8G/TR

SGM4807YMS8G/TR

SGM4807YG/TR

【SGM4808】

SGM4808 Wide Power Supply Range Audio Click-Pop Noise Eliminator

GENERAL DESCRIPTION

The SGM4808 is an audio click-pop eliminator that is designed to operate from a single 2.7V to 12V power supply. Targeted applications include HiFi level audio sub-system in battery powered equipment or professional audio system.

The SGM4808 can pass -VCC to +VCC wide range positive and negative audio signals with very low distortion. The SGM4808 can eliminate the click-pop noise under the control of external processor.

The SGM4808 is available in Green TQFN-2.6×1.8-16L and SOIC-16 packages. It operates over an ambient temperature range of -40℃ to +85℃.

PIN CONFIGURATIONS

FEATURES

• Wide Voltage Operation: 2.7V to 12V

• Low On-Resistance from Audio Signals Input to

Output: 1Ω (TYP)

• -VCC to +VCC Rail-to-Rail Low Distortion

Audio Signals Passing

• Fast Switching Times

• High Off-Isolation

• Very Low Crosstalk

• 1.8V Logic Compatible Control Pin

• -40℃ to +85℃ Operating Temperature Range

• Available in Green TQFN-2.6×1.8-16L and SOIC-16

Packages

APPLICATIONS

Portable Devices

HiFi Audio System

ORDERING INFORMATION

SGM4808YTQA16G/TR

SGM4808YS16G/TR