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參數資料
| 型號： | MAX9729ETI+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 1/28頁 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO .052W STER 28TQFN |
| 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： | AB 類 |
| 輸出類型： | 耳機，2-通道（立體聲） |
| 在某負載時最大輸出功率 x 通道數量： | 52mW x 2 @ 32 歐姆 |
| 電源電壓： | 1.8 V ~ 3.6 V |
| 特點： | 帶低音增強模式，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： | 28-TQFN-EP（5x5） |
| 封裝/外殼： | 28-WFQFN 裸露焊盤 |
| 包裝： | 帶卷 (TR) |
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General Description
The MAX9729 stereo DirectDrive headphone amplifi-
er features bass boost, volume control, an input mux,
and an I2C/SMBus-compatible serial interface. This
makes the MAX9729 ideal for portable audio applica-
tions where space is at a premium and performance is
essential. The MAX9729 operates from a single 1.8V to
3.6V, and uses Maxim’s DirectDrive architecture, elimi-
nating the need for large DC-blocking capacitors. The
headphone amplifiers deliver 52mW into a 32Ω load,
feature low 0.03% THD+N, and high 90dB PSRR.
Maxim’s industry-leading click-and-pop suppression
circuitry reduces audible transients during power and
shutdown cycles.
The BassMax feature boosts the bass response of the
amplifier, improving audio reproduction for low-end
headphones. The integrated volume control features 32
discrete volume levels along with a ramping function to
ensure smooth transitions during shutdown cycles and
input selection. The MAX9729’s eight programmable
maximum gain settings allow for a wide range of input
signal levels. A 3:1 multiplexer/mixer allows the selection
and summation of multiple stereo input signal sources.
The MAX9729 also includes a dedicated BEEP input
with independent attenuation control. BassMax, volume
control, gain settings, and input selection are controlled
using the I2C/SMBus-compatible serial interface. A low-
power, 5A shutdown mode is controlled through an
external logic input or the serial interface.
The MAX9729 consumes only 4.8mA of supply current,
provides short-circuit and thermal-overload protection,
and is specified over the -40°C to +85°C extended tem-
perature range. The MAX9729 is available in a space-
saving 28-pin thin QFN package (5mm x 5mm x 0.8mm).
Features
DirectDrive Headphone Amplifier Eliminates
Bulky DC-Blocking Capacitors
3:1 Input Multiplexer with Digital-Fade Circuitry
Software-Enabled Bass Boost
32-Step Integrated Volume Control
Beep Input with Programmable Output Level
Low Quiescent Current
Industry-Leading Click-and-Pop Suppression
I2C-Compatible 2-Wire Interface
Short-Circuit Protection
1.8V to 3.6V Single-Supply Operation
Available in Space-Saving, Thermally Efficient
28-Pin TQFN-EP (5mm x 5mm x 0.8mm)
MAX9729
Stereo Headphone Amplifier with BassMax,
Volume Control, and Input Mux
________________________________________________________________
Maxim Integrated Products
1
19-0857; Rev 0; 7/07
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
Note: This device is specified over the -40°C to +85°C operating
temperature range.
+
Denotes lead-free package.
*Last digit of slave address is pin programmable.
**EP = Exposed pad.
PART
PIN-
PACKAGE
SLAVE
ADDRESS*
PKG
CODE
MAX9729ETI+
28 TQFN-EP**
101000_
T2855-5
SMBus is a trademark of Intel Corp.
Pin Configuration appears at end of data sheet.
I2C INTERFACE
MUX
MIXER
FADER
CONTROL
VOLUME
CONTROL
BassMax
1.8V TO 3.6V
SCL
SDA
INL1
INL2
INL3
INR1
INR2
INR3
BEEP
OUTL
BML
BMR
MAX9729
Σ
PGA
OUTR
PGA
Simplified Block Diagram
Portable CD/DVD/MD
Players
Cell Phones
MP3/PMP Players
Automotive Rear Seat
Entertainment (RSE)
Flat-Panel TVs
Applications
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX9729EVCMAXQU+ | 功能描述:音頻放大器 Evaluation Kit/Evaluation System for the MAX9729 RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX9729EVKIT+ | 功能描述:音頻放大器 Evaluation Kit/Evaluation System for the MAX9729 RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX972C/D | 功能描述:校驗器 IC RoHS:否 制造商:STMicroelectronics 產品: 比較器類型: 通道數量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應時間: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| MAX972CPA | 功能描述:校驗器 IC Dual Comparator RoHS:否 制造商:STMicroelectronics 產品: 比較器類型: 通道數量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應時間: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| MAX972CPA+ | 功能描述:校驗器 IC Dual Comparator RoHS:否 制造商:STMicroelectronics 產品: 比較器類型: 通道數量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應時間: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
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