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参数资料
| 型号： | MAX9879ERV+ |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 音频控制 |
| 英文描述： | Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier; Package: UCSP (R);30 pin;6 mm² ; Temperature: -40°C to +85°C |
| 中文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PBGA30 |
| 封装： | 2.50 X 3 MM, 0.50 MM PITCH, ROHS COMPLAINT, UCSP-30 |
| 文件页数： | 1/31页 |
| 文件大小： | 539K |
| 代理商： | MAX9879ERV+ |
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General Description
The MAX9879 combines a high-efficiency stereo Class D
audio power amplifier with a stereo capacitor-less
DirectDrive headphone amplifier. Maxim’s filterless class
D amplifiers with active emissions limiting technology pro-
vide Class AB performance with Class D efficiency.
The Class D power amplifier delivers up to 715mW from
a 3.7V supply into an 8Ω load with 88% efficiency to
extend battery life. The filterless modulation scheme
combined with active emission limiting circuitry and
spread-spectrum modulation greatly reduces EMI while
eliminating the need for output filtering used in tradition-
al Class D devices.
The headphone amplifier delivers up to 58mW from
a 3.7V supply into a 16Ω load. Maxim’s DirectDrive
architecture produces a ground-referenced output from
a single supply, eliminating the need for large DC-
blocking capacitors, saving cost, space and compo-
nent height.
The device utilizes a user-defined input architecture,
three preamplifier gain settings, an input mixer, volume
control, comprehensive click-and-pop suppression, and
I2C control. A bypass mode feature disables the integrat-
ed Class D amplifier and utilizes an internal DPST switch
to allow an external amplifier to drive the speaker that is
connected at the outputs of the MAX9879.
The MAX9879 is available in a thermally efficient,
space-saving 30-bump UCSP package.
Applications
Features
Better than 9dB Margin Under EN 55022 Class B
Limits with No Filter Components
Low RF Susceptibility Design Rejects TDMA
Noise from GSM Radios
Input Mixer with User Defined Input Mode
Stereo 715mW Speaker Output (RL = 8Ω,
VDD = 3.7V)
Stereo 58mW Headphone Output (16Ω,
VDD = 3.7V)
Low 0.04% THD+N at 1kHz (Class D Power
Amplifier)
Low 0.018% THD+N at 1kHz (Headphone
Amplifier)
88% Efficiency (RL = 8Ω, POUT = 750mW)
1.6Ω Analog Switch for Speaker Amplifier Bypass
High Speaker Amplifier PSRR (72dB at 217Hz)
High Headphone Amplifier PSRR (84dB at 217Hz)
I2C Control
Hardware and Software Shutdown Mode
Ultra-Low Click and Pop
Robust Design with Current and Thermal
Protection
Available in Space-Saving Package
5x6 UCSP (2.5mm x 3mm)
MAX9879
Stereo Class D Audio Subsystem
with DirectDrive Headphone Amplifier
________________________________________________________________
Maxim Integrated Products
1
MIXER
PREAMPLIFIER
SINGLE SUPPLY
2.7V TO 5.5V
I2C
INTERFACE
VOLUME
CONTROL
VOLUME
CONTROL
BYPASS
MAX9879
Simplified Block Diagram
OUTL-
PVDDL
OUTL+
C1P
1
A
B
C
D
E
2
3
4
PGNDR
RXIN-
PGNDL
RXIN+
C1N
PGNDR
GND
VSS
GND
BIAS
INB1
INA1
HPL
SCL
56
TOP VIEW
(BUMP SIDE DOWN)
OUTR-
PVDDR
OUTR+
SDA
VDD
INB2
INA2
HPR
SHDN
VCCIO
Pin Configuration
19-4436; Rev 0; 2/09
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
EVALUATION
KIT
AVAILABLE
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX9879ERV+
-40°C to +85°C
30 UCSP (5x6)
+
Denotes a lead(Pb)-free/RoHS-compliant package.
Cell Phones
Portable Multimedia Players
DirectDrive is a registered trademark of Maxim Integrated
Products, Inc.
UCSP is a trademark of Maxim Integrated Products, Inc.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9879ERV+T | 功能描述:音频放大器 Audio Subsystem w/DirectDrive 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 |
| MAX9879EVKIT+ | 功能描述:音频放大器 Stereo Class D Audio Subsystem with DirectDrive Headphone 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 |
| MAX987ESA | 功能描述:校验器 IC Single uPower Comparator RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
| MAX987ESA+ | 功能描述:校验器 IC Single uPower Comparator RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
| MAX987ESA+T | 功能描述:校验器 IC Single uPower Comparator RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
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