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參數(shù)資料
| 型號： | MAX9716ETA+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 21/21頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP AUDIO PWR 1.4W MONO 8TDFN |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 1 |
| 類型： | AB 類 |
| 輸出類型： | 1-通道（單聲道） |
| 在某負載時最大輸出功率 x 通道數(shù)量： | 1.4W x 1 @ 4 歐姆 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 特點： | 消除爆音，差分輸入，關閉，熱保護 |
| 安裝類型： | 表面貼裝 |
| 供應商設備封裝： | 8-TDFN-EP（3x3） |
| 封裝/外殼： | 8-WDFN 裸露焊盤 |
| 包裝： | 標準包裝 |
| 產品目錄頁面： | 1392 (CN2011-ZH PDF) |
| 其它名稱： | MAX9716ETA+TDKR |
Detailed Description
The MAX9716/MAX9717 are 1.3W BTL speaker ampli-
fiers. Both devices feature a low-power shutdown
mode, and industry-leading click-and-pop suppression.
The MAX9717 features a headphone sense input that
disables the slave BTL amplifier to drive the headphone
as a single-ended load. These devices consist of high
output-current audio amps configured as BTL ampli-
fiers (see
Functional Diagrams). The closed-loop gain
of the input op amp sets the single-ended gain of the
device. Two external gain resistors set the gain of the
MAX9716 and MAX9717A (see the
Gain-Setting
Resistor section). The MAX9717B/C/D feature internally
set gains of 6dB, 9dB, and 12dB, respectively.
The output of the first amplifier serves as the input of the
second amplifier, which is configured as an inverting
unity-gain follower. This results in two outputs, identical in
amplitude, but 180° out-of-phase.
BIAS
The MAX9716/MAX9717 operate from a single 2.7V to
5.5V supply and feature an internally generated, common-
mode bias voltage of VCC/2 referenced to ground. BIAS
provides both click-and-pop suppression and sets the DC
bias level for the audio outputs. The MAX9716 can be
configured as a single-ended or differential input. For sin-
gle-ended input, connect the noninverting input IN+ to
BIAS externally. The MAX9717 BIAS is internally connect-
ed to the amplifier noninverting input IN+.
The MAX9717 can only be used with a
single-ended input. Always bypass BIAS to ground with a
capacitor. Choose the value of the bypass capacitor as
described in the
BIAS Capacitor section. Do not connect
external loads to BIAS. Any load lowers the BIAS voltage,
affecting the overall performance of the device.
BTL/SE Control Input
The MAX9717 features a headphone sense input,
BTL/SE, that enables headphone jack sensing to con-
trol the power amplifier output configuration. Driving
BTL/SE low enables the slave amplifier (OUT-). Driving
BTL/SE high disables the slave amplifier.
Shutdown Mode
The MAX9716/MAX9717 feature a low-power shutdown
mode that reduces quiescent current consumption to
10nA. Entering shutdown disables the bias circuitry,
forces the amplifier outputs to GND through an internal
20k
resistor. Drive SHDN low to enter shutdown
mode; drive SHDN high for normal operation.
Click-and-Pop Suppression
The MAX9716/MAX9717 feature Maxim’s industry-leading
click-and-pop suppression circuitry. During startup, the
amplifier common-mode bias voltage ramps to the DC
bias. When entering shutdown, the amplifier outputs are
pulled to GND through an internal 20k
resistor. This
scheme minimizes the energy present in the audio band.
MAX9716/MAX9717
Low-Cost, Mono, 1.4W BTL Audio
Power Amplifiers
_______________________________________________________________________________________
9
Pin/Bump Description
PIN
BUMP
TDFN/MAX
UCSP
MAX9716
MAX9717
MAX9716
MAX9717
NAME
FUNCTION
1
C3
SHDN
Active-Low Shutdown
2
C1
BIAS
DC Bias Bypass Capacitor Connection. Bypass BIAS to ground with a
1F capacitor.
3
—
A3
—
IN+
Noninverting Input
4
A1
IN-
Inverting Input
5
A2
OUT+
Bridge Amplifier Positive Output
6
B3
VCC
Power Supply. Bypass VCC with a 1F capacitor to ground.
7
B1, B2
GND
Ground
8
C2
OUT-
Bridge Amplifier Negative Output. OUT- becomes high-impedance
when BTL/SE is driven high.
—3
—
A3
BTL/SE
BTL/Single-Ended Mode Input. Logic low sets the device in BTL mode.
Logic high sets the device in single-ended mode.
—
EP
Exposed Pad (TDFN and MAX Only). Connect EP to GND.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9716EUA | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX9716EUA+ | 功能描述:音頻放大器 Mono 1.4W BTL Audio Power Amp 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 |
| MAX9716EUA+T | 功能描述:音頻放大器 Mono 1.4W BTL Audio Power Amp 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 |
| MAX9716EUA-T | 制造商:Maxim Integrated Products 功能描述:- Tape and Reel |
| MAX9716EVKIT | 功能描述:放大器 IC 開發(fā)工具 MAX9716 Eval Kit RoHS:否 制造商:International Rectifier 產品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V |
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