參數(shù)資料
型號(hào)： MAX9773ETG+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 1/21頁(yè)
文件大?。?/td> 0K
描述： IC AMP AUDIO PWR 1.8W D 24TQFN
標(biāo)準(zhǔn)包裝： 75
類型： D 類
輸出類型： 2 通道（立體聲）
在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量： 1.8W x 2 @ 4 歐姆
電源電壓： 2.6 V ~ 5.5 V
特點(diǎn)： 消除爆音，差分輸入，短路和熱保護(hù)，關(guān)閉
安裝類型： 表面貼裝
供應(yīng)商設(shè)備封裝： 24-TQFN-EP（4x4）
封裝/外殼： 24-WFQFN 裸露焊盤(pán)
包裝： 管件
General Description
The MAX9773 3rd-generation, ultra-low EMI, stereo,
Class D audio power amplifier provides Class AB per-
formance with Class D efficiency. The MAX9773 deliv-
ers 1.8W per channel into a 4Ω load, and offers
efficiencies above 90%. Active emissions limiting (AEL)
circuitry greatly reduces EMI by actively controlling the
output FET gate transitions under all possible transient
conditions. AEL controls high-frequency emissions
resulting from conventional Class D free-wheeling
behavior in the presence of an inductive load. Zero-
dead-time (ZDT) technology maintains state-of-the-art
efficiency and THD+N performance by allowing the out-
put FETs to switch simultaneously without cross con-
duction. A spread-spectrum modulation scheme
eliminates the need for output filtering found in tradition-
al Class D devices. These design concepts reduce
component count and extend battery life.
The MAX9773 offers two modulation schemes: a fixed-
frequency (FFM) mode, and a spread-spectrum (SSM)
mode that reduces EMI-radiated emissions. The
MAX9773 oscillator can be synchronized to an external
clock through the SYNC input, allowing synchroniza-
tion of multiple Maxim Class D amplifiers. The sync
output (SYNC_OUT) can be used for a master-slave
application where more channels are required. The
MAX9773 features a fully differential architecture, a full
bridge-tied load (BTL) output, and comprehensive
click-and-pop suppression. The device features inter-
nally set gains of 12dB, 15.6dB, 20dB, and 26dB
selected through two gain-select inputs, further reduc-
ing external component count.
The MAX9773 features high 80dB PSRR, less than
0.1% THD+N, and SNR in excess of 88dB. Short-circuit
and thermal-overload protection prevent the device
from being damaged during a fault condition. The
MAX9773 is available in 24-pin thin QFN-EP (4mm x
4mm x 0.8mm), and 20-bump UCSP (2mm x 2.5mm x
0.6mm) packages. The MAX9773 is specified over the
extended -40°C to +85°C temperature range.
Applications
Cellular/Multimedia Phones
Notebooks
Handheld Gaming Consoles
MP3 Players
Features
Filterless Amplifier Passes FCC-Radiation
Emissions Standards with 6in of Cable
Unique Spread-Spectrum Mode and Active
Emissions Limiting Achieves Better than 15dB
Margin Under FCC Limit
Zero Dead Time (ZDT) H-Bridge Maintains Good
THD+N Performance
Single-Supply Operation (2.5V to 5.5V)
Stereo Output (4Ω, VDD = 5V, THD+N = 1%,
POUT = 1.8W)
No LC Output Filter Required
85% Efficiency (RL = 8Ω, PO = 600mW)
Less Than 0.1% THD+N
High 80dB PSRR
Fully Differential Inputs
Integrated Click-and-Pop Suppression
Low-Power Shutdown Mode (0.1A)
Short-Circuit and Thermal-Overload Protection
Pin-for-Pin Compatible with the MAX9701
Available in Thermally Efficient, Space-Saving
Packages
24-Pin TQFN-EP (4mm x 4mm x 0.8mm)
20-Bump UCSP (2mm x 2.5mm x 0.6mm)
MAX9773
1.8W, Filterless, Ultra-Low EMI,
Stereo Class D Audio Power Amplifier
________________________________________________________________ Maxim Integrated Products
1
MAX9773
GAIN2
GAIN1
VDD
GAIN
RIGHT
MODULATOR
AND H-BRIDGE
SYNC
OSCILLATOR
LEFT
MODULATOR
AND H-BRIDGE
INR+
INR-
INL+
INL-
SYNC_OUT
Block Diagram
Ordering Information
19-3976; Rev 0; 1/06
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX9773EBP-T
-40°C to +85°C
20 UCSP-20
B20-1
MAX9773ETG+
-40°C to +85°C
24 TQFN-EP*
T2444-4
Pin Configurations and Gain Selection appear at end of
data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
+Denotes lead-free package.
*EP = Exposed paddle.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX9773ETG+ 功能描述:音頻放大器 Integrated Circuits (ICs) RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
MAX9773ETG+T 功能描述:音頻放大器 Integrated Circuits (ICs) RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
MAX9773EWP+G45 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX9773EWP+TG45 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX9775EBX+G45 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
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