LM48100Q Datasheet, PDF (5/24 Pages) National Semiconductor (TI) – Mono, 1.3W Audio Power Amplifier with Output Fault Detection and Volume Control

Absolute Maximum Ratings (Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Lead Temperature (Soldering 4 sec)
260°C
For detailed information on soldering plastic TSSOP and
LLP packages, refer to the Packaging Data Book available
from National Semiconductor Corporation.
Supply Voltage, continuous (Note 1)
Storage Temperature
Input Voltage
Power Dissipation (Note 3)
ESD Rating (Note 4)
ESD Rating (Note 5)
Junction Temperature
Thermal Resistance
 θ_JA (Note 6)
 θ_JC
6V
−65°C to +150°C
−0.3V to V_DD + 0.3V
Internally Limited
2500V
300V
150°C
37.8°C/W
5.2°C/W
Operating Ratings (Notes 1, 2)
Temperature Range
T_MIN ≤ T_A ≤ T_MAX
Supply Voltage
V_DD and PV_DD
I²C Supply Voltage
I²CV_DD
−40°C ≤ T_A ≤ +105°C
3.0V ≤ V_DD ≤ 5.5V
1.8V ≤ I²CV_DD ≤ 5.5V
I²CV_DD ≤ V_DD
Audio Amplifier Electrical Characteristics V_DD = 5.0V (Notes 1, 2)
The following specifications apply for Programmable Gain = 0dB, R_L = 8Ω, f = 1kHz, unless otherwise specified. Limits apply for
T_A = 25°C.
LM48100Q
Symbol
Parameter
Conditions
Typical Room Extended
(Note 7) Temp Temp
Limits Limits
(Note 8) (Notes 8, 9)
Units
(Limits)
I_DD
Quiescent Power Supply
Current
V_IN = 0V, Both channels active
R_L = 8Ω
R_L = ∞
4.4
9
4.2
6
10.8
mA (max)
7.9
mA (max)
I_DD
Diagnostic Mode Quiescent
Power Supply Current
Diagnostic Mode Enabled, R_L = ∞
12.5 14.5
mA (max)
I_SD
Shutdown Current
Shutdown Enabled
V_OS
Differential Output Offset
Voltage
V_IN = 0V, R_L = 8Ω
0.01
1
8.8
50
µA (max)
75
mV (max)
T_WU
Wake-Up Time
A_V
Gain
Time from shutdown to audio available 11.6
Minimum Gain Setting
–54
50
±1.0
Maximum Gain Setting
18
±1.0
±2.0
±1.0
ms (max)
dB (max)
dB (min)
dB (max)
dB (min)
Mute
Mute Attenuation
–80 –77
–74
dB (max)
A_V = 18dB
R_IN
Input Resistance
A_V = –54dB
11.5
12.5
13.5
kΩ (min)
kΩ (max)
110
98
120
89
kΩ (min)
130
kΩ (max)
P_O
Output Power
R_L = 8Ω, f = 1kHz
THD+N = 10%
THD+N = 1%
1.6
1.3
1.05
0.96
W
W (min)
THD+N
Total Harmonic Distortion +
Noise
P_O = 850mW, f = 1kHz, R_L = 8Ω
0.04
%
PSRR
SNR
∈_OS
I_OUT(FAULT)
Power Supply Rejection
Ratio
Signal-to-Noise-Ratio
Output Noise
FAULT Output Current
V_RIPPLE = 200mV_P-P Sine, Inputs AC GND, C_{IN_}= 1μF, input referred, C_BIAS = 2.2μF
f = 217Hz
79
66
63
dB (min)
f = 1kHz
74
dB
P_OUT = TBDmW, f = 1kHz
104
dB
A_V = 0dB, A-weighted Filter
12
μV
FAULT = 0, V_OUT(FAULT)= 0.4V
3
mA
5
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