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參數(shù)資料
| 型號： | LM4831VF |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | Multimedia Computer Audio Chip |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP44 |
| 封裝： | TQFP-44 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大小： | 575K |
| 代理商： | LM4831VF |
Electrical Characteristics
(Continued)
(Notes 1, 2) The following specifications apply for V
= 5V, R
= 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
R
L
= 10 k
, V
IN
= 1 V
RMS
A-weighted Filter
Amplifier Bridged Output, f = 1kHz,
P
O
= 1W, R
L-mic
= 20k
Other Audio Characteristics
R
L
= 20 k
, V
IN
= 1 V
RMS
Line Out
Equalizer Out
A-weighted filter, Line Out
Line Out
Equalizer Out
MUX Out
THD
E
Noise
X
TALK
Total Harmonic Distortion
Input Referred Noise
Crosstalk
0.15
10
95
%
18
μV (max)
dB
THD
Total Harmonic Distortion
0.15
0.01
20
±
0.1
±
0.1
0.25
0.5
% (max)
%
μV (max)
dB (max)
dB (max)
dB
E
Noise
A
V
Input Referred Noise
Channel Path Gain
100
±
0.7
±
0.6
0.85,
+0.3
±
0.5
E
T
Stereo Tracking Error
Line Out
Digital Inputs and Outputs
±
0.1
dB (max)
V
IL
V
IH
V
OL
V
OH
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
1.0
4.0
0.5
3.5
V (max)
V (min)
V (max)
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 Ratingsindicate limits beyond which damage to the device may occur. Operating Ratingsindicate conditions for which the device is func-
tional, but do not guarantee specific performance limits. Electrical Characteristicsstate DC andAC 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 T
,
θ
, and the ambient temperature T
. The maximum
allowable power dissipation is P
DMAX
= (T
JMAX
T
A
)/
θ
JA
. For the LM4831, T
JMAX
= 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
HPIN
0
LM4831 State
PWRDWN
0
DSIN
0
Bridged Outputs Active
Equalizer In/Out Active
Line-Outs Active
Single-Ended Outputs Active
Shutdown
0
0
1
0
1
X
1
X(Note 8)
X
Note 8:
“X” means that the state of that pin does not matter in that particular input combination.
www.national.com
3
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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(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)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(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
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