- 您现在的位置：买卖IC网 > PDF目录2092 > MAX98310EWL+T (Maxim Integrated Products)IC AMP AUD 1.4W CLASS AB 9WLP PDF资料下载
参数资料
| 型号： | MAX98310EWL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/14页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUD 1.4W CLASS AB 9WLP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | AB 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： | 2.7W x 1 @ 4 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-WLP（1.00x1.00） |
| 封装/外壳： | 9-WFBGA，WLBGA |
| 包装： | 带卷 (TR) |
Maxim Integrated Products 10
MAX98309/MAX98310
Mono 1.4W Class AB Audio Amplifiers
Detailed Description
The MAX98309/MAX98310 mono 1.4W Class AB audio
amplifiers offer low quiescent current while maintaining
excellent SNR and low 0.008% THD+N. Both ICs feature
excellent 90dB PSRR and state-of-the-art click-and-pop
suppression.
The ICs are offered with an internally fixed 0dB, 3dB,
6dB, and 9dB gain (MAX98310) or an externally set gain
(MAX98309) through external resistors.
The MAX98309 features a 10ms or 100ms pin-selectable
turn-on time, while the MAX98310 has a preset 5ms turn-
on time.
Bias
The ICs operate from a single 2.5V to 5.5V power supply
and feature an internally generated common-mode bias
voltage of VDD/2 reference to ground. BIAS provides both
click-and-pop suppression and sets the DC bias level
for the audio outputs. Choose the value of the bypass
capacitor as described in the BIAS Capacitor section. Do
not connect external loads to BIAS as this can affect the
overall performance.
Turn-On Time
The MAX98309 external gain amplifier features a select-
able turn-on time for optimized click-and-pop perfor-
mance. Connect TON to GND for a 10ms turn-on time.
Connect TON to VDD for a 100ms turn-on time. The
MAX98310 has a preset 5ms turn-on time.
Shutdown Mode
The ICs feature a 1.8FA low-power shutdown mode
that reduces quiescent current consumption. When the
active-low shutdown mode is entered, the ICs’ internal
bias circuitry is disabled, the amplifier outputs go high
impedance, and BIAS is driven to GND.
Click-and-Pop Suppression
The ICs feature Maxim’s industry-leading click-and-
pop suppression circuitry. During startup, the amplifier
common-mode bias voltage ramps to the DC bias point.
When entering shutdown, the amplifier outputs are high
impedance between both outputs. This scheme mini-
mizes the energy present in the audio band.
Applications Information
BTL Amplifier
The ICs are designed to drive a load differentially, a
configuration referred to as bridge-tied load, or BTL. The
BTL configuration (Figure 1) offers advantages over the
single-ended configuration, where one side of the load
is connected to ground. Driving the load differentially
doubles the output voltage compared to a single-ended
amplifier under similar conditions.
Substituting 2 x VOUT(P-P) for VOUT(P-P) into the following
equations yields four times the output power due to
doubling of the output voltage:
OUT (P P)
RMS
OUT
L
V
2 2
V
2
P
R
=
Because the differential outputs are biased at midsupply,
there is no net DC voltage across the load. This elimi-
nates the need for DC-blocking capacitors required for
single-ended amplifiers. These capacitors can be large,
expensive, consume board space, and degrade low-
frequency performance.
Power Dissipation and Heatsinking
Under normal operating conditions, the ICs dissipate a
significant amount of power. The maximum power dissi-
pation is given in the Absolute Maximum Ratings or can
be calculated by the following equation:
J(MAX)
A
D(MAX)
JA
T
P
=
θ
where TJ(MAX) is +150NC, TA is the ambient temperature,
and BJA is the reciprocal of the derating factor in C/W as
specified in the Absolute Maximum Ratings.
Figure 1. BTL Configuration
+1
VOUT(P-P)
2 x VOUT(P-P)
-1
相关PDF资料 |
PDF描述 |
|---|---|
| MAX98314EWL+T | IC AMP AUDIO 3.2W MONO D 9WLP |
| MAX98400AETX+ | IC AMP AUDIO STEREO D 36TQFN |
| MAX98500EWE+T | IC AMP BOOST CLASS D 2.2W 16WLP |
| MAX98502EWE+T | IC AMP AUD 2.2W BOOST D 16WLP |
| MAX9850ETI+G47 | IC AMP AUDIO HDPHN STER 28WQFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX98311EWL+T | 功能描述:音频放大器 Class AB Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX98314EWL+ | 制造商:Maxim Integrated Products 功能描述:CLASS D AMPLIFIER - Rail/Tube |
| MAX98314EWL+T | 功能描述:音频放大器 Class D Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX9832ETG+ | 制造商:Maxim Integrated Products 功能描述:STEREO AUDIO CODEC - Rail/Tube |
| MAX98355AEWL+ | 功能描述:音频放大器 PCM Input Class D Audio Power Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。