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| 型号： | SSM2311CBZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO 3.3W MONO D 9WLCSP |
| 产品变化通告： | SSM2311 Discontinuation 22/Feb/2011 |
| 标准包装： | 1 |
| 类型： | D 类 |
| 输出类型： | 1-通道（单声道） |
| 在某负载时最大输出功率 x 通道数量： | 3.3W x 1 @ 3 欧姆 |
| 电源电压： | 2.5 V ~ 5.5 V |
| 特点： | 消除爆音，差分输入，短路和热保护，关闭 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 9-WLCSP（1.52 x 1.69） |
| 封装/外壳： | 9-UFBGA，WLCSP |
| 包装： | 标准包装 |
| 产品目录页面： | 764 (CN2011-ZH PDF) |
| 其它名称： | SSM2311CBZ-REEL7DKR |
Filterless High Efficiency
Mono 3 W Class-D Audio Amplifier
SSM2311
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2008 Analog Devices, Inc. All rights reserved.
FEATURES
Filterless Class-D amplifier with Σ-Δ modulation
No sync necessary when using multiple Analog Devices, Inc.,
Class-D amplifiers
3 W into 3 Ω load and 1.4 W into 8 Ω load at 5.0 V supply with
less than 10% total harmonic distortion (THD)
90% efficiency at 5.0 V, 1.4 W into 8 Ω speaker
Better than 98 dB signal-to-noise ratio (SNR)
Single-supply operation from 2.5 V to 5.5 V
20 nA ultralow shutdown current
Short-circuit and thermal protection
Available in 9-ball, 1.5 mm × 1.5 mm WLCSP
Pop-and-click suppression
Built-in resistors reduce board component count
Default fixed 18 dB or user-adjustable gain setting
APPLICATIONS
Mobile phones
MP3 players
Portable gaming
Portable electronics
Educational toys
GENERAL DESCRIPTION
The SSM2311 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 less than 1% THD + N driving a 3 Ω load from a 5.0 V supply.
The SSM2311 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 that
is better than 98 dB. Spread-spectrum pulse density modulation
is used to provide lower EMI-radiated emissions compared with
other Class-D architectures.
The SSM2311 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, thus reducing audible noise on activation and deactivation.
The fully differential input of the SSM2311 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 default gain of SSM2311 is 18 dB, but users can reduce the gain
by using a pair of external resistors (see the Gain section).
The SSM2311 is specified over the industrial temperature range
(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).
FUNCTIONAL BLOCK DIAGRAM
SHUTDOWN
FET
DRIVER
MODULATOR
0.1F
VDD
GND
OSCILLATOR
POP-AND-CLICK
SUPPRESSION
OUT+
OUT–
BIAS
IN+
VBATT
2.5V TO 5.0V
IN–
10F
22nF1
300k
37.5k
1 INPUT CAPS ARE OPTIONAL IF INPUT DC COMMON-MODE
VOLTAGE IS APPROXIMATELY VDD/2.
22nF1
SD
AUDIO IN–
AUDIO IN+
SSM2311
06
16
1-
0
01
REXT
GAIN =
300k
(37.5k + REXT)
Figure 1.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SSM2311-EVALZ | 制造商:Analog Devices 功能描述:Evaluation Board For SSM2311 Class-D Audio Amplifier 制造商:Analog Devices 功能描述:EVAL BD FOR SSM2311 CLS-D AUD AMP - Bulk 制造商:Analog Devices 功能描述:Class-D Audio Amplifier Eval. Board |
| SSM2311-MINI-EVALZ | 制造商:Analog Devices 功能描述:EVAL BD FOR SSM2311 CLS-D AUD AMP - Bulk |
| SSM2312GN | 制造商:SSC 制造商全称:Silicon Standard Corp. 功能描述:N-channel Enhancement-mode Power MOSFET |
| SSM2313GN | 制造商:SSC 制造商全称:Silicon Standard Corp. 功能描述:P-channel Enhancement-mode Power MOSFET |
| SSM2314GN | 制造商:SSC 制造商全称:Silicon Standard Corp. 功能描述:N-channel Enhancement-mode Power MOSFET |
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