CXAR4178改善低频响应无需输出电容器进行直流闭锁高PSRR提高对噪声和RF整流的抗扰度以3.6V的电压将25mW的功率驱动到16W的负载中立体声固定增益单电源无盖耳机驱动程序

CXAR4178是一款立体声、固定增益、单电源、无盖耳机驱动程序，可在WLCSP-16软件包中使用。CXAR4178是接地参考输出，无需输出电容器进行直流闭锁。消除输出电容器的优点是节省成本，消除元件高度，提高低频响应。内部可选择的增益（0dB或6dB）可以最小化外部元件数量并节省PCB空间。高PSRR提高了对噪声和RF整流的抗扰度。CXAR4178能够以3.6V的电压将25mW的功率驱动到16W的负载中，并提供热保护
·工作电压：2.4V~5.5V
·供电电流-VDD=3.6V时，I DD=2.1mA
·低关断电流
-VDD=3.6V时，I DD=0.7毫安
·接地参考输出
-无需输出电容器（用于直流闭锁）
-节省PCB空间
-降低BOM成本
-改善低频响应
·输出功率25mW/Ch在VDD=3.6V时转换为16W，THD+N=0.04%20mW/Ch在VDD=3.6V时转换为32W，THD+N=0.02%
·217Hz时高PSRR:90dB·快速启动时间：4ms
·集成De-pop电路
·热保护

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 CXAR4178 is a stereo, fixed gain, single supply, and cap-free headphone driver, which is available in a WLCSP- 16 packages. The CXAR4178 is ground-reference output, and no need the output capacitors for DC blocking. The advantages of eliminating the output capacitor are saving the cost, eliminating component height, and improving the low frequency response. The internal selectable gain (0dB or 6dB) can minimize the external component counts and save the PCB space. High PSRR provides increased immunity to noise and RF rectification. The CXAR4178 is capable of driving 25mW at 3.6V into 16W load and provides thermal protection

   产品特点 返回TOP

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· Operating Voltage: 2.4V~5.5V 

· Supply Current - I DD =2.1mA at VDD =3.6V 

· Low Shutdown Current 

- I DD =0.7mA at VDD =3.6V 

· Ground Reference Output 

- No Output Capacitor Required (for DC Blocking) 

- Save the PCB Space 

- Reduce the BOM Costs 

- Improve the Low Frequency Response 

· Output Power 25mW/Ch into 16W at VDD =3.6V,THD+N=0.04% 20mW/Ch into 32W at VDD =3.6V,THD+N=0.02% 

· High PSRR: 90dB at 217Hz · Fast Start-Up Time: 4ms 

· Integrate the De-pop Circuitry 

· Thermal Protection 

· Surface-Mount Packaging WLCSP1.6x1.6-16

   应用范围 返回TOP

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· Handests 

· PDAs 

· Portable Multimedia Devices 

· Notebooks

   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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Audio Products > Headphone Amplifier
Part_No	Package	VDD  Voltage  (V)		IDD, Supply Current (mA)	TSTART-UP(uS)	Output  Power  RL=32W (mW)	Output  Power RL=2.5KW (mW)	Total Harmonic Distortion Plus Noise (%)	Power Supply Rejection Ratio (dB)	Output Noise (uV)	Signal to Noise Ratio (dB)	Output Offset Voltage (mV)
		min	max
CXAR4173	TSSOP14/SOP14	3	3.6	10	500	20	2.1	0.001	80	8	108	5
CXAR4174	TSSOP14/SOP14	2.3	5.5	10	500	40	2.1	0.001	80	8	108	5
CXAR4175	TQFN4x4-20A/ TSSOP16/SOP14	2.3	4.5	5	500	NA	2.1	0.002	90	10	105	8
CXAR4176	TQFN4x4-20B/TSSOP-16	2.3	4.5	5	16000	NA	2.1	0.003	80	15	102	8
CXAR4177	TQFN4x4-20B/TSSOP-16/TQFN3x3-16	1.8	5.5	2	120	150	NA	0.03	82	15	95	5
CXAR4177A	TSSOP-16
CXAR4178	WLCSP-16	2.4	5.5	2.5	4000	22	NA	0.02	90	7	95	0.5
CXAR4179	WLCSP2x2-16	1.8	4.5	5	120	145	NA	0.02	75	15	100	5
CXAR4180	WLCSP1.6x1.6-12/TDFN3x3-12	2.3	5.5	1	4000	60	NA	0.03	80	27	95	8
CXAR4181	WLCSP1.6x 1.6-12	2.3	5.5	1	4000	60	NA	0.03	80	27	95	8
CXAR4182	MSOP-10P	2.3	5.5	10	500	60	2.1	0.001	80	8	108	5