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參數(shù)資料
| 型號(hào)： | MAX9721CETC |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1V, Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown |
| 中文描述： | 0.025 W, 2 CHANNEL, AUDIO AMPLIFIER, QCC12 |
| 封裝： | 4 X 4 MM, 0.80 MM HEIGHT, TQFN-12 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 559K |
| 代理商： | MAX9721CETC |
General Description
The MAX9721 fixed-gain, stereo headphone amplifier
is ideal for portable equipment where board space is at a
premium. The MAX9721 uses a unique, patented
DirectDrive architecture to produce a ground-referenced
output from a single supply, eliminating the need for large
DC-blocking capacitors, saving cost, board space, and
component height. Fixed gains of -2V/V (MAX9721A),
-1.5V/V (MAX9721B), and -1V/V (MAX9721C) further
reduce external component count.
The MAX9721 delivers up to 20mW per channel into a
32
load and achieves 0.006% THD+N. An 80dB at
1kHz power-supply rejection ratio (PSRR) allows the
MAX9721 to operate from noisy digital supplies without
an additional linear regulator. The MAX9721 includes
±
8kV ESD protection on the headphone output.
Comprehensive click-and-pop circuitry suppresses
audible clicks and pops at startup and shutdown. A
low-power shutdown mode reduces supply current to
1.0μA (typ).
The MAX9721 operates from a single 0.9V to 1.8V sup-
ply allowing the device to be powered directly from a
single AA or AAA battery. The MAX9721 consumes only
2.2mA of supply current, provides short-circuit protection,
and is specified over the extended -40
°
C to +85
°
C tem-
perature range. The MAX9721 is available in a tiny
(1.54mm x 2.02mm x 0.6mm), 12-bump chip-scale
package (UCSP) and a 12-pin thin QFN package
(4mm x 4mm x 0.8mm).
Applications
Features
Single Cell, 0.9V to 1.8V Single-Supply Operation
Fixed Gain Eliminates External Feedback Network
MAX9721A: -2V/V
MAX9721B: -1.5V/V
MAX9721C: -1V/V
Ground-Referenced Outputs Eliminate DC Bias
No Degradation of Low-Frequency Response Due
to Output Capacitors
20mW per Channel into 32
Low 0.006% THD+N
High PSRR (80dB at 1kHz)
Integrated Click-and-Pop Suppression
Low Quiescent Current (2.2mA)
Low-Power Shutdown Control
Short-Circuit Protection
±
8kV ESD-Protected Amplifier Outputs
Available in Space-Saving Packages
12-Bump UCSP (1.54mm x 2.02mm x 0.6mm)
12-Pin Thin QFN (4mm x 4mm x 0.8mm)
M
1V, Fixed-Gain, DirectDrive, Stereo Headphone
Amplifier with Shutdown
________________________________________________________________
Maxim Integrated Products
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.
1
19-3167; Rev 0; 1/04
Ordering Information
PA RT
T EM P R AN G E
PIN-
PA CK A G E
T O P
M A RK
ABP
AADZ
ABQ
AAEA
ABR
AAEB
G A N
( V/V)
- 2
- 2
- 1.5
- 1.5
- 1
- 1
MAX9721AEBC T* - 40
°
C to + 85
°
C 12 U C S P- 12
M AX9721AE TC
- 40
°
C to + 85
°
C 12 TQFN- EP**
MAX9721BEBC T* - 40
°
C to + 85
°
C 12 U C S P- 12
M AX9721BE TC
- 40
°
C to + 85
°
C 12 TQFN- EP**
MAX9721CEBC-T*
- 40
°
C to + 85
°
C 12 U C S P- 12
M AX9721C E TC
- 40
°
C to + 85
°
C 12 TQFN- EP**
*
Future product—contact factory for availability.
**
EP = Exposed paddle.
UCSP is a trademark of Maxim Integrated Products, Inc.
Pin Configurations appear at end of data sheet.
MP3 Players
Cellular Phones
PDAs
Smart Phones
Portable Audio Equipment
DirectDrive OUTPUTS
ELIMINATE DC-BLOCKING
CAPACITORS.
C1N
C1P
OUTL
SINGLE
1.5V CELL
AA OR AAA
BATTERY
OUTR
SGND
PGND
MAX9721
INVERTING
CHARGE PUMP
INR
INL
V
DD
PV
SS
V
SS
Block Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9721CETC+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX9721EVKIT | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX97220AETE+ | 功能描述:音頻放大器 DirectDrive LDriver Headphone Amplifier 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 |
| MAX97220AETE+T | 功能描述:音頻放大器 DirectDrive LDriver Headphone Amplifier 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 |
| MAX97220AEVKIT+ | 功能描述:音頻 IC 開發(fā)工具 MAX97220 Eval Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
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