LM4831VF National Semiconductor, LM4831VF Datasheet - Page 3

• Manufacturer Part Number: LM4831VF
• Description: IC AMP AUDIO PWR 1.5W AB 44LQFP
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class ABr

Specifications of LM4831VF

• Output Type: 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 1.5W x 2 @ 4 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: Depop, Input Multiplexer, Microphone, Shutdown
• Mounting Type: Surface Mount
• Package / Case: 44-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *LM4831VF

Symbol
THD
E
X
THD
E
A
E
V
V
V
V
Electrical Characteristics
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 T
allowable power dissipation is P
mounted, is 62˚C/W assuming the VEF44A package.
Note 4: Human body model, 100 pF discharged through a 1.5 k
Note 5: Machine Model, 220 pF–240 pF discharged through all pins.
Note 6: Typicals are measured at 25˚C and represent the parametric norm.
Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Digital Inputs Pin Truth Table
Note 8: “X” means that the state of that pin does not matter in that particular input combination.
(Notes 1, 2) The following specifications apply for V
measurements represent the full audio chain from Input A of each channel to their respective output. Limits apply for
T
Noise
TALK
Noise
V
T
IL
IH
OL
OH
PWRDWN
A
= 25˚C.
0
0
0
1
Total Harmonic Distortion
Input Referred Noise
Crosstalk
Total Harmonic Distortion
Input Referred Noise
Channel Path Gain
Stereo Tracking Error
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
Pin Name
HPIN
X
0
0
1
Parameter
DMAX
= (T
X(Note 8)
DSIN
JMAX
0
1
X
− T
A
)/
(Continued)
JA
. For the LM4831, T
R
A-−weighted Filter
Amplifier Bridged Output, f = 1kHz,
P
R
Line Out
Equalizer Out
A-weighted filter, Line Out
Line Out
Equalizer Out
MUX Out
Line Out
Other Audio Characteristics
Digital Inputs and Outputs
O
L
L
Single-Ended Outputs Active
= 1W, R
Microphone Amplifier
= 10 k , V
= 20 k , V
DD
resistor.
Bridged Outputs Active
Equalizer In/Out Active
= 5V, R
Line-Outs Active
LM4831 State
L-mic
Conditions
Shutdown
JMAX
IN
IN
3
L
= 20k
= 8
= 1 V
= 1 V
= 150˚C, and the typical junction-to-ambient thermal resistance, when board
RMS
RMS
and f = 1 kHz, unless otherwise specified. Distortion
JMAX
,
JA
, and the ambient temperature T
Typical
(Note
−0.25
±
±
±
0.15
0.15
0.01
10
95
20
6)
0.1
0.1
0.1
LM4831
−0.85,
(Note
Limit
±
±
±
+0.3
100
0.5
1.0
4.0
0.5
3.5
18
7)
0.7
0.6
0.5
A
. The maximum
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µV (max)
µV (max)
dB (max)
dB (max)
dB (max)
% (max)
(Limits)
V (max)
V (max)
V (min)
V (min)
Units
dB
dB
%
%