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參數資料
| 型號： | LM4831VFX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP44 |
| 封裝： | TQFP-44 |
| 文件頁數： | 7/13頁 |
| 文件大?。?/td> | 575K |
| 代理商： | LM4831VFX |
Electrical Characteristics (Continued)
(Notes 1, 2) The following specifications apply for V
DD = 5V, RL =8 and f = 1 kHz, unless otherwise specified. Distortion
measurements represent the full audio chain from Input A of each channel to their respective output. Limits apply for
T
A = 25C.
Symbol
Parameter
Conditions
LM4831
Units
(Limits)
Typical
(Note
6)
Limit
(Note
7)
Microphone Amplifier
THD
Total Harmonic Distortion
R
L =10k,VIN =1VRMS
0.15
%
E
Noise
Input Referred Noise
A-weighted Filter
10
18
V (max)
X
TALK
Crosstalk
Amplifier Bridged Output, f = 1kHz,
P
O = 1W, RL-mic = 20k
95
dB
Other Audio Characteristics
THD
Total Harmonic Distortion
R
L =20k,VIN =1VRMS
Line Out
0.15
0.5
% (max)
Equalizer Out
0.01
%
E
Noise
Input Referred Noise
A-weighted filter, Line Out
20
100
V (max)
A
V
Channel Path Gain
Line Out
±0.1
±0.7
dB (max)
Equalizer Out
±0.1
±0.6
dB (max)
MUX Out
0.25
0.85,
+0.3
dB
E
T
Stereo Tracking Error
Line Out
±0.1
±0.5
dB (max)
Digital Inputs and Outputs
V
IL
Input Low Voltage
1.0
V (max)
V
IH
Input High Voltage
4.0
V (min)
V
OL
Output Low Voltage
0.5
V (max)
V
OH
Output High Voltage
3.5
V (min)
Note 1: All voltages are measured with respect to the ground pins, 12, 17, 20, and 44, 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 func-
tional, but do not guarantee specific performance limits.
Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guar-
antee 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. For the LM4831, TJMAX = 150C, and the typical junction-to-ambient thermal resistance, when board
mounted, is 62C/W assuming the VEF44A package.
Note 4: Human body model, 100 pF discharged through a 1.5 k
resistor.
Note 5: Machine Model, 220 pF–240 pF 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).
Digital Inputs Pin Truth Table
Pin Name
LM4831 State
PWRDWN
HPIN
DSIN
0
Bridged Outputs Active
Equalizer In/Out Active
0
1
Line-Outs Active
0
1
X(Note 8)
Single-Ended Outputs Active
1
X
Shutdown
Note 8: “X” means that the state of that pin does not matter in that particular input combination.
LM4831
www.national.com
3
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相關代理商/技術參數 |
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| LM4832 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound |
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| LM4832M/NOPB | 功能描述:IC AMP AUDIO PWR .25W AB 28SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 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:H 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:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C，麥克風，靜音，短路保護，音量控制 安裝類型:表面貼裝 供應商設備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM4832MT/NOPB | 功能描述:IC AMP AUDIO PWR .25W AB 28TSSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 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:H 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:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C，麥克風，靜音，短路保護，音量控制 安裝類型:表面貼裝 供應商設備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM4832MTX/NOPB | 功能描述:IC AMP AUDIO PWR .25W AB 28TSSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 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:H 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:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C，麥克風，靜音，短路保護，音量控制 安裝類型:表面貼裝 供應商設備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
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