CXAS4231D是一个2x2交叉点开关，用于交换耳机接口上的接地和麦克风连接。接地开关具有0.1Ω（典型）的超低Ron，以将其上的电压降降至最低，防止耳机接地参考电压意外增加。开关状态通过SEL输入控制。当SEL=High时，GND连接到COM2，MIC连接到COM1；当SEL=Low时，GND连接到COM1，MIC连接到COM2。SEL输入上的一个内部下拉2MΩ电阻器设置开关的默认状态。
CXAS4231D在DFN2x2-6L包中提供。标准产品无铅无卤。
电源电压：2.3~5.0V
用于接地开关的超低Ron:100mΩ
l麦克风开关的低罗恩：4.5欧
合闸前断开
扩展控制输入范围内的低静态电流
ESD额定值（HBM JEDEC:JESD22-A114）
输入输出对地：±8KV
地面电源：±5KV
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[ CXAS4231D ]"
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）
一.产品概述
The CXAS4231D is a 2x2 cross-point switch that is used to interchange the Ground and MIC connections on a headphone connector. The Ground switch has an ultra-low Ron of 0.1 Ω (typical) to minimize voltage drop across it, preventing undesired increase in headphone ground reference voltage. the switch state is controlled via the SEL input. When SEL=High, GND is connected to COM2 and MIC is connected to COM1; When SEL=Low, GND is connected to COM1 and MIC is connected to COM2. An internal pull-down 2MΩ resistor on SEL input sets the default state of the switch.
The CXAS4231D is available in DFN2x2-6L package. Standard product is Pb-Free and halogen-Free.
二.产品特点
Supply voltage : 2.3 ~ 5.0V
ultra-low Ron for GND Switch : 100mΩ
low Ron for MIC Switch : 4.5 Ω
Break-Before-Make Switching
Low quiescent current over an Expanded Control Input Range
ESD Rating (HBM JEDEC: JESD22-A114)
IO to GND : ± 8KV
Power to GND : ± 5KV
三.应用范围
Cell phone
Tablet
Others Music Players
四.技术规格书（产品PDF)
需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！
五.产品封装图
六.电路原理图
七.相关芯片选择指南 更多同类产品......
| 音频开关 | ||||||||||
| Product | Configuration | VIN | IQ | BW@-3dB | THD+N | Crosstalk | OFF | Size | Package | |
| (Min.) | (Max.) | (Max.) | (Typ.) | (Typ.) | (Typ.) | (Typ.) | (L×W) | |||
| (V) | (uA) | (Ω) | (dB) | (dB) | (dB) | (mm) | ||||
| CXAS4228Q | Dual SPDT | 2.3 | 5.5 | 1 | 0.5 | -73 | -83 | -81 | 1.4 x 1.8 | QFN1418-10L |
| CXAS4229Q | Dual SPDT | 2.3 | 5.5 | 1 | 0.5 | -73 | -83 | -81 | 1.4 x 1.8 | QFN1418-10L |
| CXAS4230Q | Dual SPDT | 2.3 | 5.5 | 1 | 0.75 | -66 | -81 | -80 | 1.4 x 1.8 | QFN1418-10L |
| CXAS4231D | MIC/GND | 2.3 | 5 | 1 | 0.08 | -80 | -50 | -50 | 2.0 x 2.0 | DFN2020-6L |
| CXAS4232B | MIC/GND | 2.3 | 5.5 | 0.6 | 0.5 | - | - | - | 2.1 x 2.3 | SOT-353 |
| CXAS4233Q | Dual SPST | 3.3 | 4.5 | 12 | 50 | -105 | -130 | -130 | 1.4 x 1.8 | QFN1418-10L |
| CXAS4234Q | Quad SPDT | 2.3 | 4.5 | 1 | 0.5 | -73 | -50 | -50 | 1.8 x 2.6 | QFN1826-16L |
| CXAS4235Q | Quad SPDT | 2.3 | 4.5 | 1 | 0.5 | -73 | -50 | -50 | 3.0 x 3.0 | QFN3030-16L |
| CXAS4236Q | Dual SPDT HIFI | 3.3 | 4.5 | 55 | 0.2 | -118 | 145 | 145 | 1.8 x 2.6 | QFN1826-16L |
| CXAS4237C | Dual SPDT HIFI | 3.3 | 4.5 | 55 | 0.2 | -118 | 145 | 145 | 1.2 x 1.63 | WLCSP-12 |
