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参数资料
| 型号： | LM4857GR/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PBGA49 |
| 文件页数： | 3/40页 |
| 文件大小： | 1948K |
| 代理商： | LM4857GR/NOPB |
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Control Interface Electrical Characteristics (Notes 1, 2) (Continued)
The following specifications apply for V
DD = 5V and VDD = 3V and 2.5V
≤ I2CV
DD
≤ 5.5V, unless otherwise specified. Limits
apply for T
A = 25C.
Symbol
Parameter
Conditions
LM4857
Units
(Limits)
Typical
Limits (Notes
t
5
Stop Condition time
100
ns (min)
V
IH
Digital Input High Voltage
0.7 x I
2CVDD
V (min)
V
IL
Digital Input Low Voltage
0.3 x I
2CV
DD
V (max)
Note 1: All voltages are measured with respect to the GND pin unless otherwise specified.
Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which
guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit
is given, however, the typical value is a good indication of device performance.
Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature, TA. The maximum
allowable power dissipation is PDMAX =(TJMAX -TA)/ θJA or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4857 operating in Mode
3, 8, or 13 with VDD =5V, 8 stereo loudspeakers and 32 stereo headphones, the total power dissipation is 1.348W. θJA = 62C/W.
Note 4: Human body model, 100pF discharged through a 1.5k
resistor.
Note 5: Machine Model, 220pF - 240pF discharged through all pins.
Note 6: Typicals are measured at +25C and represent the parametric norm.
Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 9: Shutdown current and supply current are measured in a normal room environment. All digital input pins are connected to I2CVDD.
Note 10: The given
θJA is for an LM4857ITL mounted on a PCB with a 2in2 area of 1oz printed circuit board copper ground plane.
Note 11: “0dB gain” refers to the volume control gain setting of MIN,LIN, and RIN set at 0dB.
Note 12: The given
θJA is for an LM4857SP mounted on a PCB with a 2in2 area of 1oz printed circuit board ground plane.
Note 13: The given
θJA is for an LM4857GR mounted on a PCB with a 4in2 area of 1oz printed circuit board ground plane.
LM4857
www.national.com
11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4857ITL | 制造商:Texas Instruments 功能描述:1.2W STEREO SUBSYST 3D SMD 4857 |
| LM4857ITL/NOPB | 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 |
| LM4857ITLBD | 功能描述:BOARD EVALUATION LM4857ITL RoHS:否 类别:编程器，开发系统 >> 评估板 - 音频放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| LM4857ITLX/NOPB | 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 |
| LM4857SP | 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 |
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