- 您现在的位置：买卖IC网 > PDF目录2091 > MAX97220DETE+ (Maxim Integrated Products)IC AUDIO AMP HEADPHONE 16TQFN PDF资料下载
参数资料
| 型号： | MAX97220DETE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/19页 |
| 文件大小： | 0K |
| 描述： | IC AUDIO AMP HEADPHONE 16TQFN |
| 标准包装： | 100 |
| 系列： | DirectDrive® |
| 类型： | AB 类 |
| 输出类型： | 耳机，2-通道（立体声） |
| 在某负载时最大输出功率 x 通道数量： | 125mW x 1 @ 32 欧姆 |
| 电源电压： | 2.5 V ~ 5.5 V |
| 特点： | 消除爆音，差分输入，关闭 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 16-TQFN-EP（3x3） |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 包装： | 管件 |
14
Maxim Integrated
Differential Input DirectDrive
Line Drivers/Headphone Amplifiers
MAX97220A–MAX97220E
Applications Information
MAX9722 Compatibility
The MAX97220_ is compatible with the footprint of the
MAX9722. BIAS on the MAX97220_ is in the same posi-
tion as SVSS. On the MAX9722, SVSS is connected to
PVSS. For the MAX97220_, there is only one charge-
pump output that doubles as the amplifier’s negative
power-supply input. The connection of negative charge-
pump output and amplifier negative power-supply input
is internal on the MAX97220_ and external on the
MAX9722.
To implement a PCB that is compatible with both the MAX9722
and MAX97220_, put a capacitor pad from BIAS/SVSS
(MAX97220_/MAX9722 pin 11) to PGND. Also, place a 0I
resistor pad from BIAS/SVSS (MAX97220_/MAX9722 pin
11) to PVSS (pin 5 on both parts). Install the 0I resistor
when the MAX9722 is used and leave the resistor out of
circuit when the MAX97220_ is used (Figure 4).
Power Dissipation
While driving a headphone load, the IC dissipates a sig-
nificant amount of power. The maximum power dissipa-
tion is given in the Continuous Power Dissipation of the
Absolute Maximum Ratings section or can be calculated
by the following equation:
J(MAX)
A
D(MAX)
JA
TT
P
=
q
where TJ(MAX) is +150NC, TA is the ambient temperature,
and BJA is the reciprocal of the derating factor in NC/W
as specified in the Absolute Maximum Ratings section.
Since the IC is a stereo amplifier, the total maximum
internal power dissipation for a given VDD and load is
given by the following equation:
2
DD
D(MAX)
2 L
4V
P
R
=
π
If the internal power dissipation for a given application
exceeds the maximum allowed for a given package,
reduce power dissipation by decreasing supply voltage,
ambient temperature, input signal, or gain, or by increasing
load impedance.
The TQFN package features an exposed thermal pad
on its underside. This pad lowers the package's thermal
impedance by providing a direct heat conduction path
from the die to the PCB. Connect the exposed thermal
pad to PGND or an isolated plane.
Figure 4. MAX97220A vs. MAX9722 PCB Layout
0.47F
10kI
SHDN
-INR
+INR
+INL
-INL
OUTL
BIAS
C1P
CHARGE
PUMP
C1N
PVSS
C1
1F
OPEN
0.1F
C2
1F
OUTR
SGND PGND
PVDD SVDD
1F
2.5V TO 5.5V
MAX97220A
0.47F
10kI
SHDN
-INR
+INR
+INL
-INL
OUTL
SVSS
C1P
CHARGE
PUMP
C1N
PVSS
C1
1F
0I
1F
OUTR
SGND PGND
PVDD SVDD
1F
2.5V TO 5.5V
MAX9722
相关PDF资料 |
PDF描述 |
|---|---|
| MAX9722AETE+G | IC AMP AUDIO .13W STER AB 16TQFN |
| MAX9723CETE+ | IC AMP AUDIO .06W STER AB 16TQFN |
| MAX9724AEUD+ | IC AMP AUDIO .045W STER 14TSSOP |
| MAX9724DETC+ | IC AMP AUDIO .063W STER 12TQFN |
| MAX9725DETC+ | IC AMP AUDIO .025W STER 12TQFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX97220DETE+ | 功能描述:音频放大器 DirectDrive LDriver Headphone Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX97220DETE+T | 功能描述:音频放大器 DirectDrive LDriver Headphone Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX97220EETE+ | 功能描述:音频放大器 DirectDrive LDriver Headphone Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX97220EETE+T | 功能描述:音频放大器 DirectDrive LDriver Headphone Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX9722AETE | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。