SSM2301: Filterless High Efficiency Mono 1.4 W Class-D Audio Amplifier |
The SSM2301 is a fully integrated, high efficiency, Class-D audio amplifier 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.
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The SSM2301 is a fully integrated, high efficiency, Class-D audio amplifier 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 SSM2301 features a high efficiency, low noise modulation scheme that does not require external LC output filters. The modu-lation provides high efficiency even at low output power. The SSM2301 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 greater than 98 dB. Spread-spectrum modulation is used to provide lower EMI-radiated emissions compared with other Class-D architectures.
The SSM2301 has a micropower shutdown mode with a maximum shutdown current of 30 nA. Shutdown is enabled by applying a logic low to the SD pin.
The device also includes pop-and-click suppression circuitry. 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 SSM2301 provides excellent rejection of common-mode noise on the input. Input coupling capacitors can be omitted if the dc input common-mode voltage is approximately VDD/2.
The SSM2301 also has excellent rejection of power supply noise, including noise caused by GSM transmission bursts and RF rectification. PSRR is typically 63 dB at 217 Hz.
The gain can be set to 6 dB or 12 dB by utilizing the gain control select pin connected respectively to ground or to VDD. Gain can also be adjusted externally by inserting a resistor in series with each input pin.
The SSM2301 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 both an 8-lead, 3 mm × 3 mm lead-frame chip scale package (LFCSP) and an 8-lead MSOP package.
Applications
Data Sheet, Rev. A, 10/07
| Part# | Output Power (W) | Speaker Driver | Headphone Driver | Micophone Driver | Product Description | Price* (1000-4999) |
|---|---|---|---|---|---|---|
| AD8541 | - | - | - | - | Rail-Rail Input/Output, Low Power, Single/Supply, CMOS Amplifier | $0.27 |
| AD8542 | - | - | - | - | Dual, Rail-Rail Input/Output, Low Power, Single/Supply, CMOS Amplifier | $0.38 |
| AD8544 | - | - | - | - | Quad, Rail-Rail Input/Output, Low Power, Single/Supply, CMOS Amplifier | $0.54 |
| ADAU1513 | 23 | - | - | - | - | $2.15 |
| ADAU1590 | 15.5 | - | - | - | - | $2.24 |
| ADAU1592 | 18 | - | - | - | - | $2.37 |
| SSM2167 | - | - | - | Mono | Microphone Driver withe Noise Gate | $1.20 |
| SSM2211 | 1.5 | Mono | - | - | Mono Speaker Driver | $0.45 |
| SSM2250 | 1.5 | Mono | Stereo | - | Mono Speaker and Stereo Headphone Driver | $1.00 |
| SSM2301 | 1.4 | - | - | - | - | $0.45 |
| SSM2302 | 2 | - | - | - | - | $0.92 |
| SSM2304 | 2 | - | - | - | - | $0.81 |
| SSM2305 | 2.8 | - | - | - | - | $0.60 |
| SSM2306 | 2 | - | - | - | - | $0.99 |
| SSM2311 | 3 | - | - | - | - | $0.73 |
| SSM2315 | 3 | Mono | - | - | - | $0.82 |
| SSM2317 | 3 | - | - | - | - | $0.91 |
| SSM2319 | 3 | - | - | - | - | $0.90 |
| SSM2335 | 3 | - | - | - | - | $0.63 |
* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S.
Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 | 报价* (1000 pcs.) |
生产供货情况** | 符合ROHS规定 | 查看PCN | 样片车 | 购物车 |
|---|---|---|---|---|---|---|---|---|---|---|
| SSM2301-EVALZ | 量产 | 评估板 | - | 工业 | $ 50.50 | 11/13/2009 | Y | - | 联络ADI | 添加到购物车 |
| SSM2301-MINI-EVALZ | 量产 | 评估板 | - | 工业 | $ 50.50 | 11/13/2009 | Y | - | 联络ADI | 添加到购物车 |
| SSM2301CPZ-REEL | 量产 | 8 ld LFCSP (3x3mm) | 8 | 工业 | $ | 11/13/2009 | Y 材料声明 | - | 联络ADI | 联络ADI |
| SSM2301CPZ-REEL7 | 量产 | 8 ld LFCSP (3x3mm) | 8 | 工业 | $ | 11/13/2009 | Y 材料声明 | - | 添加到样片车 | 添加到购物车 |
| SSM2301RMZ-REEL | 量产 | 8 | 工业 | $ | 12/25/2009 | Y 材料声明 | - | 联络ADI | 添加到购物车 | |
| SSM2301RMZ-REEL7 | 量产 | 8 | 工业 | $ | 11/13/2009 | Y 材料声明 | - | 添加到样片车 | 添加到购物车 |
*这里所列出的美国报价单仅供预算参考，指美元报价（规定订量的每片美元，美国离岸价），如有修改不再另行通知。由于地区关税、商业税、汇率及手续费原因，国际报价可能不同。对于特殊批量报价，请与您当地的ADI公司办事处或代理商联络。对于评估板和套件的报价是指一个单位价格。
**样片供货情况可能好于生产供货，请将样片放入购物车，以查看样片供货情况。
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