LM48100Q Datasheet, PDF (6/24 Pages) National Semiconductor (TI) – Mono, 1.3W Audio Power Amplifier with Output Fault Detection and Volume Control

Symbol
R_FAULT
R_FAULT
R_OPEN
R_SHT
I_SHTCKT
T_SD
t_DIAG
LM48100Q
Parameter
Conditions
Typical Room Extended
(Note 7) Temp Temp
Limits Limits
(Note 8) (Notes 8, 9)
Output to Supply Short
Circuit Detection Threshold
Short between either OUTA to V_DD or
GND, or OUTB to V_DD or GND
Short Circuit
Open Circuit
3
3
7.5
7.5
Short between both OUTA and OUTB to
Output to Supply Short
V_DD or GND
Circuit Detection Threshold Short Circuit
6
Open Circuit
15
Open Circuit Detection
Threshold
Open circuit between OUTA and OUTB
100
200
Output to Output Short
Circuit Detection Threshold
Short circuit between OUTA and OUTB
2
6
Short Circuit Current Limit
1.47 1.67
2
Thermal Shutdown
Threshold
170
Diagnostic Time
58
Units
(Limits)
kΩ (min)
kΩ (max)
kΩ (min)
kΩ (max)
Ω (min)
Ω (max)
Ω (min)
Ω (max)
A (max)
°C
ms
Audio Amplifier Electrical Characteristics V_DD = 3.6V (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
(Note 7)
Room
Temp
Limits
(Note 8)
Extended
Temp
Limits
(Notes 8, 9)
Units
(Limits)
I_DD
Quiescent Power Supply
Current
V_IN = 0V, Both channels active
R_L = 8Ω
R_L = ∞
I_DD
Diagnostic Mode Quiescent _{Diagnostic Mode Enabled}
Power Supply Current
3.8
8.5
3.6
5
11.7 14.5
10.8
mA (max)
7
mA (max)
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)
76
mV (max)
T_WU
Wake-Up Time
A_V
Gain
Time from shutdown to audio available 11.5
50
Minimum Gain Setting
–54
±1
Maximum Gain Setting
18
±1
ms (max)
dB (max)
dB (min)
dB (max)
dB (min)
Mute
Mute Attenuation
–79
–77
dB (max)
R_IN
Input Resistance
A_V = 18dB
A_V = –54dB
11.5
12.5
13.5
110
98
120
kΩ (min)
kΩ (max)
89
kΩ (min)
135
kΩ (max)
P_O
Output Power
R_L = 8Ω, f = 1kHz
THD+N = 10%
THD+N = 1%
820
660
480
mW
mW (min)
Total Harmonic Distortion +
THD+N
Noise
P_O = 400mW, f = 1kHz, R_L = 8Ω
0.04
% (max)
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