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LM4982 Scheda tecnica(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Il numero della parte LM4982
Spiegazioni elettronici  Ground-Referenced, Ultra Low Noise, 80mW Stereo Headphone Amplifier with IntelliSense and I2C Volume
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Produttore elettronici  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
4.5V
Storage Temperature
−65˚C to +150˚C
Input Voltage
−0.3V to V
DD +0.3V
Power Dissipation (Note 3)
Internally Limited
ESD Susceptibility (Note 4)
2000V
ESD Susceptibility (Note 5)
200V
Junction Temperature
150˚C
Thermal Resistance
θ
JA (typ) - (TLA16XXX)
105˚C/W (Note X)
Operating Ratings
Temperature Range
T
MIN
≤ T
A
≤ T
MAX
−40˚C
≤ T
A
≤ +85˚C
Supply Voltage
1.6V
≤ V
DD
≤ 4.0V
Audio Amplifier Electrical Characteristics V
DD =3V (Notes 1, 2)
The following specifications apply for V
DD = 3V, RL =16
Ω,A
V = 0dB, unless otherwise specified. Limits apply for TA = 25˚C.
Symbol
Parameter
Conditions
LM4982
Units
(Limits)
Typical
(Note 6)
Limits (Notes 7,
8)
I
DD
Quiescent Power Supply
Current Full Power Mode
V
IN = 0V, inputs terminated,
both channels enabled
8.1
11.5
mA (max)
V
IN = 0V, inputs terminated,
one channel enabled
5.1
7.3
mA
V
IN = 0V, inputs terminated,
No headphone inserted
2.15
mA
I
SD
Shutdown Current
With SD enabled
0.1
1.5
µA (max)
V
OS
Output Offset Voltage
R
L =32
0.7
4.5
mV (max)
A
V
Gain Max and Min settings
[B0:B4] = 00000
–70
dB
[B0:B4] = 11111
+18
dB
R
IN
Input Resistance
gain setting 18dB
22
15
29
k
Ω (min)
k
Ω (max)
gain setting –76dB
200
k
P
OUT
Stereo Output Power
THD+N = 1% (max); f = 1kHz,
R
L =16
Ω, per channel
47
40
mW (min)
THD+N = 1% (max); f = 1kHz,
R
L =32
Ω, per channel
51
mW
THD+N
Total Harmonic Distortion +
Noise
P
O = 50mW, f = 1kHz
R
L =16
Ω, single channel
0.05
%
P
O = 50mW, f = 1kHz
R
L =32
Ω, single channel
0.025
PSRR
Power Supply Rejection Ratio
Full Power Mode
V
RIPPLE = 200mVP-P, input referred
f = 217Hz
66
56
dB
f = 1kHz
55
f = 20kHz
40
SNR
Signal-to-Noise-Ratio
R
L =32
Ω,P
OUT = 20mW,
f = 1kHz, BW = 20Hz to 22kHz
100
dB
T
WU
Wake Up Time From
Shutdown
Charge Pump Wake-Up Time
300
µs
T
WU
Wake Up Time
Headphone Sense Debounce Time
200
ms
X
TALK
Crosstalk
R
L =16
Ω,P
OUT = 1.6mW,
f = 1kHz, A-weighted filter
70
dB
Z
OUT
Output Impedance
In Shutdown Mode
180
k
I
L
Input Leakage
±0.1
nA
Vih
HPS in threshold
0.9xV
DD [min]
V
Vil
HPS in threshold
0.7xV
DD [max]
V
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