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MAX97200

更新时间： 2024-11-24 14:58:07
品牌 Logo 应用领域
亚德诺 - ADI 放大器
页数 文件大小 规格书
13页 1460K
描述
低功耗、低失调、双模H类DirectDrive耳机放大器

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中文翻译

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MAX97200 数据手册

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19-4981; Rev 3; 8/12  
Low-Power, Low-Offset, Dual Mode, Class H  
DirectDrive Headphone Amplifier  
General Description  
The MAX97200 is a 45mW Class H headphone amplifier  
that runs from a single low 1.8V supply voltage and employs  
Maxim’s second-generation DirectDrivetechnology.  
Features  
S Second-Generation DirectDrive Technology  
S Dynamic, Class H, Dual Mode Charge Pump  
S Low Voltage Operation, V = 1.8V  
PVIN  
The MAX97200 features a Dual ModeK internal charge  
pump to generate the power rails for the amplifier. The  
charge-pump output can be QPVIN/2 or QPVIN depend-  
ing on the amplitude of the output signal. When the out-  
put voltage is low, the power-supply voltage is QPVIN/2.  
When the output signal demands larger output voltage,  
the charge pump switches modes so that a greater  
power-supply voltage is realized and more output power  
can be delivered to the load.  
S Low Quiescent Current, 1.15mA (typ) at V  
=
PVIN  
1.8V  
S Eliminates Large Output DC-Blocking Capacitors  
S Industry-Leading Click-and-Pop Performance  
S High-Fidelity, SNR 105dB (5.6µV Output Noise)  
S Output Power 34mW into 32I (THD+N 1%)  
S Output Power 45mW into 16I (THD+N 10%)  
S Tiny, 12-Bump, 1.27mm x 1.65mm (0.4mm Lead  
Second-generation DirectDrive technology improves  
power consumption when compared to first-generation  
DirectDrive amplifiers. The MAX97200 can be powered  
from a regulated 1.8V and have similar power consump-  
tion to a traditional DirectDrive amplifier that is powered  
from 0.9V.  
Pitch) WLP Package  
Ordering Information/  
Selector Guide  
GAIN  
(dB)  
PIN-  
PACKAGE  
TOP  
MARK  
PART  
Maxim’s DirectDrive architecture uses an inverting  
charge pump to derive a negative voltage supply. The  
headphone amplifier is powered between the positive  
supply and the generated negative rail. This scheme  
allows the audio output signal to be biased about  
ground, eliminating the need for large DC-blocking  
capacitors between the amplifier output and the head-  
phone load.  
MAX97200AEWC+  
MAX97200BEWC+  
3
0
12 WLP  
12 WLP  
ABF  
ABG  
Note: All devices operate over the -40°C to +85°C tempera-  
ture range.  
+Denotes a lead(Pb)-free and RoHS-compliant package.  
Low-output offset voltage provides very good click-and-  
pop performance both into and out of shutdown. High  
signal-to-noise ratio maintains system fidelity.  
Typical Operating Circuit  
The MAX97200 is available in a tiny, 12-bump wafer  
level packaging (WLP 1.27mm x 1.65mm) with a small,  
0.4mm lead pitch and specified over the -40NC to +85NC  
extended temperature range.  
MAX97200  
LEFT AUDIO  
INPUT  
LEFT AUDIO OUTPUT  
Applications  
APPLICATIONS  
PROCESSOR  
SHDN  
Cellular Phones  
Smartphones  
MP3 Players  
VoIP Phones  
RIGHT AUDIO  
INPUT  
RIGHT AUDIO  
OUTPUT  
CHARGE  
PUMP  
DirectDrive is a registered trademark of Maxim Integrated  
Products, Inc.  
Dual Mode is a trademark of Maxim Integrated Products, Inc.  
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.  
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