SSM2302 音频放大器,放大器和比较器,美国模拟器件

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SSM2302 技术资料
品牌/商标：
ADI

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企业名：深圳福田区晶芯博创电子商行

类型：经销商

电话： 0755-82979912

手机：13510826553

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地址：广东深圳深圳市福田区深南中路华强北佳和大厦B座706

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SSM2302 音频放大器,放大器和比较器,美国模拟器件

The SSM2302 is a fully integrated, high efficiency, Cl*-D stereo audio amplifier. It is designed to maximize performance for mobile phone applications. The application circuit requires a minimum of external components and operates from a single 2.5 V to 5.0 V supply. It is capable of delivering 1.4 W of continuous output power with less than 1% THD + N driving an 8 Ω load from a 5.0 V supply.

The SSM2302 features a high efficiency, low noise modulation scheme. It operates with 85% efficiency at 1.4 W into 8 Ω from a 5.0 V supply and has a signal-to-noise ratio (SNR) that is better than 98 dB. PDM modulation is used to provide lower EMI-radiated emissions compared with other Cl*-D architectures.

The SSM2302 has a micropower shutdown mode with a t*ical shutdown current of 20 nA. Shutdown is enabled by applying a logic low to the SD pin.

The architecture of the device allows it to achieve a very low level of pop and click. This minimizes voltage glitches at the output during turn-on and turn-off, thus reducing audible noise on activation and deactivation.

The fully differential input of the SSM2302 provides excellent rejection of common-mode noise on the input. Input coupling capacitors can be omitted if the dc input common-mode voltage is approximay VDD/2.

The SSM2302 also has excellent rejection of power supply noise, including noise caused by GSM tran*ission bursts and RF rectification. PSRR is t*ically 63 dB at 217 Hz.

The gain can be set to 6 dB or 12 dB utilizing the gain control select pin connected respectively to ground or VDD. Gain can also be adjusted externally by using an external resistor.

The SSM2302 is specified over the commercial temperature range (−40°C to +85°C). It has built-in thermal shutdown and output short-circuit protection. It is available in a 16-lead, 3 mm × 3 mm lead-frame chip scale package (LFCSP).

SSM2302 应用

Mobile phones
MP3 players
Portable gaming
Portable electronics
Educational toys

SSM2302 特点

Filterless Cl*-D amplifier with built-in output stage
1.4 W into 8 Ω at 5.0 V supply with less than 1% THD
85% efficiency at 5.0 V, 1.4 W into 8 Ω speaker
Better than 98 dB SNR (signal-to-noise ratio)
Single-supply operation from 2.5 V to 5.0 V
20 nA ultralow shutdown current
Short-circuit and thermal protection
Available in 16-lead, 3 mm × 3 mm LFCSP
Pop-and-click suppression
Built-in resistors reduce board component count
Fixed and user-adjustable gain configurations

SSM2302 功能框图

Functional Block Diagram for SSM2302

SSM2302 技术指标

Output Power (W)

2W

SSM2302 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
SSM2302CPZ-R2	量产	16 ld LFCSP (3x3mm, 1.50mm exposed pad)	16	工业
SSM2302CPZ-REEL	量产	16 ld LFCSP (3x3mm, 1.50mm exposed pad)	16	工业
SSM2302CPZ-REEL7	量产	16 ld LFCSP (3x3mm, 1.50mm exposed pad)	16	工业
SSM2302Z-EVAL	量产	评估板		工业