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| 型號： | SSM2306-MINI-EVALZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL FOR SSM2306-MINI |
| 設計資源： | Analog Audio Input, Class-D Output with ADAU1701, SSM2306, and ADP3336 (CN0162) |
| 標準包裝： | 1 |
| 放大器類型： | D 類 |
| 輸出類型： | 2 通道（立體聲） |
| 在某負載時最大輸出功率 x 通道數(shù)量： | 2.4W x 2 @ 4 歐姆 |
| 電源電壓： | 2.5 V ~ 5 V |
| 工作溫度： | -40°C ~ 85°C |
| 板類型： | 完全填充 |
| 已用 IC / 零件： | SSM2306 |
| 已供物品： | 板 |
| 相關(guān)產(chǎn)品： | SSM2306CPZ-REEL7DKR-ND - IC AMP AUDIO 2.4W STER D 16LFCSP SSM2306CPZ-REEL7CT-ND - IC AMP AUDIO 2.4W STER D 16LFCSP SSM2306CPZ-REEL7TR-ND - IC AMP AUDIO 2.4W STER D 16LFCSP SSM2306CPZ-REEL-ND - IC AMP AUDIO 2.4W STER D 16LFCSP SSM2306CPZ-R2TR-ND - IC AMP AUDIO 2.4W STER D 16LFCSP |
2 W, Filterless, Class-D
Stereo Audio Amplifier
SSM2306
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
Fax: 781.461.3113
2007 Analog Devices, Inc. All rights reserved.
FEATURES
Filterless Class-D amplifier with built-in output stage
2 W into 4 Ω and 1.4 W into 8 Ω at 5.0 V supply
Ultralow idle current with load resistance
>87% efficiency at 5.0 V, 1.4 W into 8 Ω speaker
Better than 96 dB SNR (signal-to-noise ratio)
Available in 16-lead, 3 mm × 3 mm LFCSP
Single-supply operation from 2.5 V to 5.0 V
20 nA ultralow shutdown current
Short-circuit and thermal protection
Pop-and-click suppression
Built-in resistors reduce board component count
Default fixed 18 dB gain and user-adjustable
APPLICATIONS
Mobile phones
MP3 players
Portable gaming
Portable electronics
Educational toys
Notebook computers
GENERAL DESCRIPTION
The SSM2306 is a fully integrated, high efficiency, Class-D stereo
audio amplifier designed to maximize performance for portable
applications. The application circuit requires minimum external
components and operates from a single 2.5 V to 5.0 V supply. It
is capable of delivering 2 W of continuous output power with less
than 10% THD + N driving a 4 Ω load from a 5.0 V supply.
The SSM2306 features ultralow idle current, high efficiency, and
a low noise modulation scheme. It operates with >87% 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 96 dB. PDM modulation offers lower
EMI radiated emissions compared to other Class-D architectures.
The SSM2306 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 architecture of the device allows it to achieve a very low level
of pop and click to minimize voltage glitches at the output
during turn-on and turn-off, thereby reducing audible noise on
activation and deactivation. The fully differential input of the
SSM2306 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 SSM2306 also has excellent rejection of power supply noise,
including noise caused by GSM transmission bursts and RF
rectification.
The SSM2306 has a preset gain of 18 dB that can be reduced by
using external resistors.
The SSM2306 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).
FUNCTIONAL BLOCK DIAGRAM
FET
DRIVER
MODULATOR
0.1F
VDD
INTERNAL
OSCILLATOR
OUTR+
OUTR–
OUTL+
OUTL–
BIAS
FET
DRIVER
MODULATOR
INR+
VBATT
2.5V TO 5.0V
INR–
SHUTDOWN
INL+
INL–
GND
10F
22nF1
1 INPUT CAPS ARE OPTIONAL IF INPUT DC COMMON-MODE
VOLTAGE IS APPROXIMATELY VDD/2.
22nF1
344k
GAIN = 344k/(43k + REXT)
43k
REXT
344k
22nF1
SD
LEFT IN+
LEFT IN–
RIGHT IN–
RIGHT IN+
SSM2306
0
65
42
-00
1
Figure 1.
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| SSM2306N | 制造商:SSC 制造商全稱:Silicon Standard Corp. 功能描述:N-CHANNEL ENHANCEMENT-MODE POWER MOSFET |
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