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參數資料
| 型號： | MAX9877AERP+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 1/31頁 |
| 文件大小： | 0K |
| 描述： | IC SUBSYSTEM MONO AUD 20MAXFILM |
| 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： | 825mW x 1 @ 4 歐姆; 53mW x 2 @ 16 歐姆 |
| 電源電壓： | 2.7 V ~ 5.25 V |
| 特點： | 消除爆音，I²C，輸入多路復用器，短路和熱保護，關機，音量控制 |
| 安裝類型： | 表面貼裝 |
| 供應商設備封裝： | 20-UCSP |
| 封裝/外殼： | 20-WFBGA，CSPBGA |
| 包裝： | 帶卷 (TR) |
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General Description
The MAX9877A combines a high-efficiency Class D
audio power amplifier with a stereo Class AB capacitor-
less DirectDrive headphone amplifier. Maxim’s 3rd
generation, filterless Class D amplifier with active emis-
sions limiting technology provides Class AB perfor-
mance with Class D efficiency.
The MAX9877A delivers up to 725mW from a 3.7V supply
into an 8Ω load with 87% efficiency to extend battery life.
The filterless modulation scheme combined with active
emissions limiting circuitry and spread-spectrum modula-
tion greatly reduces EMI while eliminating the need for
output filtering used in traditional Class D devices.
The stereo Class AB headphone amplifier in the
MAX9877A uses Maxim’s DirectDrive architecture, that
produces a ground-referenced output from a single
supply, eliminating the need for large DC-blocking
capacitors, saving cost, space, and component 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 MAX9877A.
The MAX9877A is available in a thermally efficient,
space-saving 20-bump MaxFilm package.
Applications
Cell Phones
Portable Multimedia Players
Features
Low Emissions, Filterless Class D Amplifier
Achieves Better than 10dB Margin Under EN55022
Class B Limits
Low RF Susceptibility Design Rejects TDMA
Noise from GSM Radios
Input Mixer with User-Defined Input Mode
725mW Speaker Output (RSPK = 8Ω, PVDD = 3.7V)
53mW Headphone Output (RHP = 16Ω, VDD = 3.7V)
Low 0.05% THD+N at 1kHz (Class D Power
Amplifier)
Low 0.016% THD+N at 1kHz (Headphone
Amplifier)
87% Efficiency (RSPK = 8Ω, POUT = 750mW)
1.6Ω
Ω 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
Click-and-Pop Suppression
Current-Limit and Thermal Protection
Available in a Space-Saving, 2.5mm x 2.0mm
MaxFilm Package
MAX9877AERP
Low RF Susceptibility, Mono Audio
Subsystem with DirectDrive Headphone Amplifier
________________________________________________________________
Maxim Integrated Products
1
MIXER/MUX
PREAMPLIFIER
SINGLE SUPPLY
2.7V TO 5.25V
I2C
INTERFACE
VOLUME
CONTROL
VOLUME
CONTROL
BYPASS
MAX9877A
Simplified Block Diagram
MaxFilm
HPL
VSS
C1N
HPR
1
A
B
C
D
2
3
4
C1P
BIAS
SDA
RXIN+
VDD
OUT+
INB1
SCL
PGND
INB2
PVDD
INA1
GND
RXIN-
INA2
OUT-
5
TOP VIEW
(BUMP SIDE DOWN)
Pin Configuration
19-4651; Rev 0; 5/09
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
MAX9877AERP+T
-40°C to +85°C
20 MaxFilm (5x4)
+
Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
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相關代理商/技術參數 |
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| MAX9877AEWP+G45 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX9877AEWP+TG45 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX9877EBP+G45 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX9877EBP+TG45 | 制造商:Maxim Integrated Products 功能描述: |
| MAX9877ERP+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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