CXAR41191 delivers up to 80mW per channel into a 32Ω load and has low 0.03% THD+N. A -78dB power supply rejection ratio (PSRR) at 217Hz allows this device to operate from noisy digital supplies with

CXAR41191The CXAR41191 stereo headphone amplifier is designed for portable equipment where board space is at a premium. The CXAR41191 uses capless architecture to produce aground-referenced output from a single power supply, eliminating the need for large DC-blocking capacitors for output, saving cost, board space, and component height. Additionally, for CXAR41191B, the gain is set internally (-2V/V), further reducing component count. For CXAR41191A, the gain can be adjusted by external feedback resistors.
The CXAR41191 delivers up to 80mW per channel into a 32Ω load and has low 0.03% THD+N. A -78dB power supply rejection ratio (PSRR) at 217Hz allows this device to operate from noisy digital supplies without an additional linear regulator. Comprehensive click-and-pop circuitry suppresses audible clicks and pops on startup and shutdown.
The CXAR41191 operates from a single 2.7V to 5.1V supply, consumes only 5.8mA supply current, has short-circuit and thermal-overload protections, and is specified over the extended -40℃ to +85℃ temperature range. The CXAR41191 is available in a Green TDFN-3×3-10L package.

目录

1.产品概述       2.产品特点     

3.应用范围       4.技术规格书下载（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

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The CXAR41191 stereo headphone amplifier is designed for portable equipment where board space is at a premium. The CXAR41191 uses capless architecture to produce aground-referenced output from a single power supply, eliminating the need for large DC-blocking capacitors for output, saving cost, board space, and component height. Additionally, for CXAR41191B, the gain is set internally (-2V/V), further reducing component count. For CXAR41191A, the gain can be adjusted by external feedback resistors.

The CXAR41191 delivers up to 80mW per channel into a 32Ω load and has low 0.03% THD+N. A -78dB power supply rejection ratio (PSRR) at 217Hz allows this device to operate from noisy digital supplies without an additional linear regulator. Comprehensive click-and-pop circuitry suppresses audible clicks and pops on startup and shutdown.

The CXAR41191 operates from a single 2.7V to 5.1V supply, consumes only 5.8mA supply current, has short-circuit and thermal-overload protections, and is specified over the extended -40℃ to +85℃ temperature range. The CXAR41191 is available in a Green TDFN-3×3-10L package.

   产品特点 返回TOP

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• CXAR41191A: External Feedback Gain Network
    CXAR41191B: Fixed -2V/V Gain
• No Bulky DC-Blocking Capacitors Required
• Ground-Referenced Outputs Eliminate DC-Bias
    Voltage on Headphone Ground Pin
• No Degradation of Low-Frequency Response Due
    to Output Capacitors
• 80mW into 32Ω Load from 5V Power Supply at
    THD+N = 0.1% (TYP, per Channel)
• Low 0.03% THD+N
• High PSRR (-78dB at 217Hz)
• Integrated Click-and-Pop Suppression
• 2.7V to 5.1V Single Supply Operation
• Low Quiescent Current (5.8mA at V_DD = 5V)
• Shutdown Control
• Short-Circuit and Thermal-Overload Protections
• Undervoltage Lockout Function
• -40℃ to +85℃ Operating Temperature Range
• Available in Green TDFN-3×3-10L Package

   应用范围 返回TOP

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Notebook PCs
Cellular Phones
PDAs
MP3 Players
Smart Phones
Portable Audio Equipment

   技术规格书（产品PDF) 返回TOP 

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产品封装图 返回TOP

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电路原理图 返回TOP

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耳机驱动器
Part Number	CH	SHDN	VCC(Min) (V)	VCC(Max)(V)	Differential Input	Output Power/CH @RL=16Ω(mW)	Output Power/CH @RL=32Ω(mW)	Package
CXAR41184	Stereo	L	2.5	5.5	N	158	87	MSOP-8
CXAR41185	Stereo	H	2.5	5.5	N	158	87	MSOP-8
CXAR41186	Stereo	H	2.7	5.5	Y	132	82	MSOP-10
CXAR41187	Stereo	L	2.7	5.5	N		95	TQFN-4x4-20L
CXAR41188	Stereo	L	2.5	5.5	N	145	85	TDFN-2x2-8L
CXAR41189	Stereo	L	2.7	5.5	N		88	TQFN-3x3-12L
CXAR41190	Stereo	L	2.7	5.5	Y		80	TQFN-3x3-16L
CXAR41191	Stereo	L	2.7	5.1	N		80	TDFN-3x3-10L