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| 型號： | SSM2304Z-EVAL |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 1/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | EVAL BOARD FOR SSM2304Z |
| 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： | SSM2304 |
| 已供物品： | 板 |
| 相關產品： | SSM2304CPZ-REEL-ND - IC AMP AUDIO 2.4W STER D 16LFCSP SSM2304CPZ-REEL7DKR-ND - IC AMP AUDIO 2.4W STER D 16LFCSP SSM2304CPZ-REEL7CT-ND - IC AMP AUDIO 2.4W STER D 16LFCSP SSM2304CPZ-REEL7TR-ND - IC AMP AUDIO 2.4W STER D 16LFCSP |
| 其它名稱： | Q3279966 |
2 W Filterless Class-D
Stereo Audio Amplifier
SSM2304
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
2006 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 with <10% THD
85% efficiency at 5.0 V, 1.4 W into 8 Ω speaker
Better than 98 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
Notebooks and PCs
Mobile phones
MP3 players
Portable gaming
Portable electronics
Educational toys
GENERAL DESCRIPTION
The SSM2304 is a fully integrated, high efficiency, Class-D stereo
audio amplifier. It is designed to maximize performance for
portable applications. The application circuit requires a mini-
mum of 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 SSM2304 features a high efficiency, low noise modulation
scheme. It 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 better
than 98 dB. PDM modulation is used to provide lower EMI-
radiated emissions compared with other Class-D architectures.
The SSM2304 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. 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 SSM2304 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 SSM2304 also has excellent rejection of power supply noise,
including noise caused by GSM transmission bursts and RF
rectification.
The SSM2304 has a preset gain of 18 dB, which can be reduced
by using external resistors.
The SSM2304 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
300k
GAIN = 300k/(47k + Rext)
47k
Rext
300k
22nF1
SD
LEFT IN+
LEFT IN–
RIGHT IN–
RIGHT IN+
SSM2304
06
16
2-
0
01
Figure 1.
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相關代理商/技術參數 |
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| SSM2305 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Filterless High Efficiency Mono 2.8 W Class-D Audio Amplifier |
| SSM2305AGN | 制造商:SSC 制造商全稱:Silicon Standard Corp. 功能描述:P-channel Enhancement-mode Power MOSFET |
| SSM2305CPZ-R2 | 功能描述:IC AMP AUDIO 2.8W MONO D 8LFCSP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:DirectDrive® 類型:D 類 輸出類型:1-通道（單聲道），帶立體聲耳機 在某負載時最大輸出功率 x 通道數量:930mW x 1 @ 8 歐姆; 40mW x 2 @ 16 歐姆 電源電壓:2.7 V ~ 5.5 V 特點:消除爆音，差分輸入，I²C，靜音，關閉，音量控制 安裝類型:表面貼裝 供應商設備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) 其它名稱:MAX97000EWA+T-ND |
| SSM2305CPZ-REEL | 功能描述:IC AMP AUDIO 2.8W MONO D 8LFCSP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:- 標準包裝:2,000 系列:- 類型:AB 類 輸出類型:2 通道（立體聲） 在某負載時最大輸出功率 x 通道數量:- 電源電壓:4 V ~ 18 V 特點:- 安裝類型:通孔 供應商設備封裝:8-DIP 封裝/外殼:8-DIP（0.300"，7.62mm） 包裝:管件 |
| SSM2305CPZ-REEL7 | 功能描述:IC AMP AUDIO 2.8W MONO D 8LFCSP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:DirectDrive® 類型:D 類 輸出類型:1-通道（單聲道），帶立體聲耳機 在某負載時最大輸出功率 x 通道數量:930mW x 1 @ 8 歐姆; 40mW x 2 @ 16 歐姆 電源電壓:2.7 V ~ 5.5 V 特點:消除爆音，差分輸入，I²C，靜音，關閉，音量控制 安裝類型:表面貼裝 供應商設備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) 其它名稱:MAX97000EWA+T-ND |
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