SSM2301RMZ-REEL

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.

SSM2301RMZ-REEL 应用

Mobile phones
MP3 players
Portable gaming
Portable electronics
Educational toys

SSM2301RMZ-REEL 特点

Filterless Class-D amplifier with Σ-Δ modulation
No sync necessary when using multiple Class-D amplifiers from Analog
Devices, Inc.
1.4 W into 8 Ω at 5.0 V supply with less than 1% THD + N
85% efficiency at 5.0 V, 1.4 W into 8 Ω speaker
Greater 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 8-lead, 3 mm × 3 mm LFCSP and MSOP packages
Pop-and-click suppression
Built-in resistors reduce board component count
Fixed and user-adjustable gain configurations

SSM2301RMZ-REEL 功能框图

其他图表

SSM2301RMZ-REEL 技术指标

Output Power (W)

18W

Supply Current

44mA

SSM2301 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
SSM2301-EVALZ	量产	评估板		工业
SSM2301-MINI-EVALZ	量产	评估板		工业
SSM2301CPZ-REEL	量产	8 ld LFCSP (3x3mm)	8	工业
SSM2301CPZ-REEL7	量产	8 ld LFCSP (3x3mm)	8	工业
SSM2301RMZ-REEL	量产		8	工业
SSM2301RMZ-REEL7	量产		8	工业