The LM4673 is a single supply, high efficiency, 2.65W, mono, Class D audio amplifier. A low noise, filterless PWM architecture eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design.
The LM4673 is designed to meet the demands of mobile phones and other portable communication devices. Operating on a single 5V supply, it is capable of driving a 4Ω speaker load at a continuous average output of 2.1W with less than 1% THD+N. Its flexible power supply requirements allow operation from 2.4V to 5.5V.
The LM4673 has high efficiency with speaker loads compared to a typical Class AB amplifier. With a 3.6V supply driving an 8Ω speaker, the IC's efficiency for a 100mW power level is 80%, reaching 88% at 400mW output power.
The LM4673 features a low-power consumption shutdown mode. Shutdown may be enabled by driving the Shutdown pin to a logic low (GND).
The gain of the LM4673 is externally configurable which allows independent gain control from multiple sources by summing the signals. Output short circuit and thermal overload protection prevent the device from damage during fault conditions.
All trademarks are the property of their respective owners.
| Audio input type | Analog Input |
| Architecture | Class-D |
| Speaker channels (max) | Mono |
| Rating | Catalog |
| Power stage supply (max) (V) | 5.5 |
| Power stage supply (min) (V) | 2.4 |
| Load (min) (Ω) | 4 |
| Output power (W) | 2.65 |
| SNR (dB) | 97 |
| THD + N at 1 kHz (%) | 0.03 |
| Iq (typ) (mA) | 2.6 |
| Control interface | Hardware |
| Closed/open loop | Closed |
| Analog supply (min) (V) | 2.4 |
| Analog supply voltage (max) (V) | 5.5 |
| PSRR (dB) | 78 |
| Operating temperature range (°C) | -40 to 85 |
| DSBGA (YFQ) | 9 | 1.96000000000000028000000000000001 mm² 1.4000000000000001 x 1.4000000000000001 |
| WSON (NGQ) | 8 | 9 mm² 3 x 3 |
关注公众号，优惠活动早知道！
Copyright ©2023 wlxmall.com万联芯城版权所有 | 电信与信息服务业务经营许可证100798号 | 粤ICP备14012234号 | 投诉建议
客服电话：4000-306-326 文明办网文明上网举报电话：010-82615762 违法不良信息举报中心
| * 我的问题/建议： | |
| * 联系电话： | |
| 上传图片（选填）： |
请您提交2M以内的jpg,gif,png格式文件 |
| 投诉订单号（选填）： | |
购物车中还没有商品，赶紧选购吧！
正在供货
加入购物车
