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參數(shù)資料
| 型號： | LM4844 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Stereo 1.2W Audio Sub-system with 3D Enhancement |
| 中文描述： | 1.2W的立體聲音頻子系統(tǒng)三維增強系統(tǒng) |
| 文件頁數(shù)： | 5/21頁 |
| 文件大小： | 983K |
| 代理商： | LM4844 |
Volume Control Electrical Characteristics
(Notes 1, 2) (Continued)
The following specifications apply for 3V
≤
V
DD
≤
5V and 3V
≤
I
2
CV
DD
≤
5V, unless otherwise specified. Limits apply for T
A
=
25C.
Symbol
Parameter
Conditions
LM4844
Limits
(Notes
7, 8)
11.5
12.5
-35
-34
Units
(Limits)
Typical
(Note 6)
12
Mono Volume Control Range
maximum gain setting
dB (min)
dB (max)
dB (min)
dB (max)
dB
dB (max)
minimum gain setting
-34.5
Volume Control Step Size
Volume Control Step Size
Error
Stereo Channel to Channel
Gain Mismatch
1.5
+/-0.2
+/-0.5
0.3
dB
Mute Attenuation
Mode 12, V
in
= 1V
RMS
Headphone
maximum gain setting
100
33
dB
L
IN
and R
IN
Input Impedance
25
42
75
125
15
25
73
123
k
(min)
k
(max)
k
(min)
k
(max)
k
(min)
k
(max)
k
(min)
k
(max)
minimum gain setting
100
M
IN
Input Impedance
maximum gain setting
20
minimum gain setting
96
Control Interface Electrical Characteristics
(Notes 1, 2)
The following specifications apply for 3V
≤
V
DD
≤
5V and 3V
≤
I
2
CV
DD
≤
5V, unless otherwise specified. Limits apply for T
A
=
25C.
Symbol
Parameter
Conditions
LM4844
Limits
(Notes
7, 8)
Units
(Limits)
Typical
(Note 6)
t
1
t
2
t
3
t
4
t
5
V
IH
V
IL
SCL period
SDA Set-up Time
SDA Stable Time
Start Condition Time
Stop Condition time
Digital Input High Voltage
Digital Input Low Voltage
2.5
100
0
100
100
μs (min)
ns (min)
ns (min)
ns (min)
ns (min)
V (min)
V (max)
0.7 x I
2
CVDD
0.3 x I
2
CV
DD
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 T
,
θ
, and the ambient temperature, T
. The maximum
allowable power dissipation is P
= (T
- T
) /
θ
or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4844 typical application
with V
DD
= 3.3V and R
L
= 8
stereo operation, the total power dissipation is TBDW.
θ
JA
= TBDC/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.
L
www.national.com
5
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| LM4845 | Output Capacitor-less Audio Subsystem with Programmable National 3D |
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| LM4850 | Mono 1.5 W / Stereo 300 mW Power Amplifier |
| LM4850LD | Mono 1.5 W / Stereo 300 mW Power Amplifier |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4844_07 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Stereo 1.2W Audio Sub-System with 3D Enhancement |
| LM4844TL/NOPB | 功能描述:接口—CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| LM4844TLEVAL | 功能描述:BOARD EVALUATION LM4844TL RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- |
| LM4844TLX/NOPB | 功能描述:接口—CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| LM4845 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Output Capacitor-less Audio Subsystem with Programmable National 3D |
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