SSM2319: Filterless, High Efficiency, Mono 3 W Class-D Audio Amplifier |
The SSM2319 is a fully integrated, high efficiency Class-D 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 5.5 V supply. It is capable of delivering 3 W of continuous output power with <1% THD + N driving a 3 Ω load from a 5.0 V supply.
The SSM2319 ...More
The SSM2319 is a fully integrated, high efficiency Class-D 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 5.5 V supply. It is capable of delivering 3 W of continuous output power with <1% THD + N driving a 3 Ω load from a 5.0 V supply.
The SSM2319 features a high efficiency, low noise modulation scheme that does not require any external LC output filters. The modulation continues to provide high efficiency even at low output power. It operates with 90% efficiency at 1.4 W into 8 Ω or 85% efficiency at 3 W into 3 Ω from a 5.0 V supply and has an SNR of 98 dB. Spread-spectrum pulse density modulation is used to provide lower EMI-radiated emissions compared with other Class-D architectures.
SYNC can be activated in the event that end users are concerned about clock intermodulation (beating effect) of several amplifiers in close proximity.
The SSM2319 has a micropower shutdown mode with a typical shutdown current of 20 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, reducing audible noise on activation and deactivation.
The default gain of the SSM2319 is 12 dB, but users can reduce the gain by using a pair of external resistors (see the Gain section).
The SSM2319 is specified over the industrial temperature range of −40°C to +85°C. It has built-in thermal shutdown and output short-circuit protection. It is available in a 9-ball, 1.5 mm × 1.5 mm wafer level chip scale package (WLCSP).
Applications
| Part# | Output Power (W) | Efficiency (%) | Dynamic Range (dB) | SNR (dB) | THD+N (dB) | Pos Supply | Supply Current | Price* (1000-4999) |
|---|---|---|---|---|---|---|---|---|
| AD1990 | 5 | 84 | 102 | 102 | -90 | +8V to +12V | 30mA | - |
| ADAU1513 | 23 | 90 | 96 | 96 | - | +9V to +18V | 40mA | $2.15 |
| ADAU1590 | 15.5 | 90 | 101 | 101 | - | +9V to +15V | 65mA | $2.24 |
| ADAU1592 | 18 | 87 | 101 | 101 | -85 | +9V to +18V | 44mA | $2.37 |
| SSM2301 | 1.4 | 85 | - | 98 | - | +2.5V to +5V | 4.2mA | $0.45 |
| SSM2302 | 2 | 85 | - | 98 | -67 | +2.5V to +5V | - | $0.92 |
| SSM2304 | 2 | 85 | - | 102 | -67 | +2.5V to +5V | 7mA | $0.81 |
| SSM2305 | 2.8 | 89 | - | 98 | +-94 | +2.5V to +5.5V | 3.3mA | $0.60 |
| SSM2306 | 2 | 87 | - | 96 | - | +2.5V to +5V | 6.5mA | $0.99 |
| SSM2311 | 3 | 85 | - | 98 | -67 | +2.5V to +5.5V | 4.2mA | $0.73 |
| SSM2315 | 3 | 93 | - | 103 | - | +2.5V to +5.5V | 3.3mA | $0.82 |
| SSM2317 | 3 | 93 | - | 93 | - | +2.5V to +5.5V | 4.07mA | $0.91 |
| SSM2319 | 3 | 90 | - | 98 | - | +2.5V to +5.5V | 3.7mA | $0.90 |
| SSM2335 | 3 | 93 | - | 96 | - | +2.5V to +5.5V | 3.63mA | $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.
*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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