LM4981 National Semiconductor, LM4981 Datasheet - Page 4

• Manufacturer Part Number: LM4981
• Description: 80mW Stereo Headphone Amplifier
• Manufacturer: National Semiconductor

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I
I
I
V
V
T
V
P
THD+N
PSRR
∈
DD
DD
SD
Symbol
WU
IH
IL
OS
O
OS
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics V
The following specifications apply for V
= 25˚C.
Supply Voltage
Storage Temperature
Input Voltage
Power Dissipation(Note 3)
ESD Susceptibility (Note 4)
Quiescent Power Supply Current
Standby Power Supply Current
Shutdown Current
Logic Input Voltage High
Logic Input Voltage Low
Digital Volume
Volume Step Size
Step Size Error
Channel-to-Channel Volume
Tracking Error
Wake Up Time
Output Offset Voltage
Output Power
Total Harmonic Distortion
Power Supply Rejection Ratio
Output Noise
Parameter
−0.3V to V
DD
Internally Limited
−65˚C to +150˚C
= 3V, AV = 1V/V R
V
V
SHDN, SDM, CLOCK, U/D
SHDN, SDM, CLOCK, U/D
Input Referred Maximum Gain
Input Referred Minimum Gain
All gain settings
R
THD+N = 1% (max); f = 1kHz,
R
THD+N = 1% (max); f = 1kHz,
R
THD+N = 1% (max); f = 1kHz,
R
THD+N = 1% (max); f = 1kHz,
R
P
single channel
P
single channel
V
f
Cl = 1µF
V
f
Cl = 1µF
V
f
A-Weighted Filter
DD
RIPPLE
RIPPLE
RIPPLE
IN
SD
L
L
L
L
L
O
O
RIPPLE
RIPPLE
RIPPLE
(Note 2)
= 32Ω
= 16Ω, one channel
= 32Ω, one channel
= 16Ω, (two channels in phase)
= 32Ω, (two channels in phase)
= 60mW, f = 1kHz, R
= 50mW, f = 1kHz, R
= 0V, R
DD
= GND
= 3V
2500V
+0.3V
= 1kHz, Inputs AC GND,
= 10kHz, Inputs AC GND,
= 217Hz
= 200mV
= 200mV
= 200mV
4.5V
L
=
(Notes 1, 2)
∞
Conditions
L
4
P-P
P-P
P-P
= 32Ω, f = 1kHz, unless otherwise specified. Limits apply to T
Sine,
Sine,
Sine,
Operating Ratings
ESD Susceptibility (Note 5)
Junction Temperature
Temperature Range
Supply Voltage (V
T
L
L
MIN
= 16Ω
= 32Ω
≤ T
A
≤ T
MAX
DD
)
(Note 6)
Typical
±
0.15
0.03
0.02
–33
300
2.3
0.1
12
83
75
40
47
65
50
67
11
7
3
0.3
1
LM4981
(Note 7)
0.7V
0.3V
Limit
−40˚C ≤ T
3.5
2.0V ≤ V
10
33
43
5
DD
DD
CC
A
mW (min)
mW (min)
(Limits)
≤ 85˚C
≤ 4.2V
Units
150˚C
mW
mW
mA
mA
mV
250V
µA
dB
dB
dB
dB
dB
dB
dB
dB
µV
µs
%
V
V
A