Datasheet

LM48100Q
www.ti.com SNAS470D –OCTOBER 2008–REVISED MARCH 2013
Audio Amplifier Electrical Characteristics V
DD
= 5.0V
(1)(2)
(continued)
The following specifications apply for Programmable Gain = 0dB, R
L
= 8Ω, f = 1kHz, unless otherwise specified. Limits apply
for T
A
= 25°C.
LM48100Q
Typical Room Extended
Units
Symbol Parameter Conditions
(3)
Temp Temp Limits
(Limits)
Limits
(4) (5)
(4)
SNR Signal-to-Noise-Ratio P
OUT
= TBDmW, f = 1kHz 104 dB
∈
OS
Output Noise A
V
= 0dB, A-weighted Filter 12 μV
I
OUT(FAULT)
FAULT Output Current FAULT = 0, V
OUT(FAULT)
= 0.4V 3 mA
Short between either OUTA to V
DD
or
Output to Supply Short GND, or OUTB to V
DD
or GND
R
FAULT
Circuit Detection Threshold Short Circuit 3 3 kΩ (min)
Open Circuit 7.5 7.5 kΩ (max)
Short between both OUTA and OUTB to
Output to Supply Short V
DD
or GND
R
FAULT
Circuit Detection Threshold Short Circuit 6 kΩ (min)
Open Circuit 15 kΩ (max)
Open Circuit Detection 100 Ω (min)
R
OPEN
Open circuit between OUTA and OUTB
Threshold 200 Ω (max)
Output to Output Short 2 Ω (min)
R
SHT
Short circuit between OUTA and OUTB
Circuit Detection Threshold 6 Ω (max)
I
SHTCKT
Short Circuit Current Limit 1.47 1.67 2 A (max)
Thermal Shutdown
T
SD
170 °C
Threshold
t
DIAG
Diagnostic Time 58 ms
Audio Amplifier Electrical Characteristics V
DD
= 3.6V
(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
Typical Room Extended
Units
Symbol Parameter Conditions
(3)
Temp Temp
(Limits)
Limits Limits
(4) (4) (5)
V
IN
= 0V, Both channels active
Quiescent Power Supply
I
DD
R
L
= 8Ω 3.8 8.5 10.8 mA (max)
Current
R
L
= ∞ 3.6 5 7 mA (max)
Diagnostic Mode Quiescent
I
DD
Diagnostic Mode Enabled 11.7 14.5 mA (max)
Power Supply Current
I
SD
Shutdown Current Shutdown Enabled 0.01 1 µA (max)
Differential Output Offset
V
OS
V
IN
= 0V, R
L
= 8Ω 8.8 50 76 mV (max)
Voltage
T
WU
Wake-Up Time Time from shutdown to audio available 11.5 50 ms (max)
(1) “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of
device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or
other conditions beyond those indicated in the Recommended Operating Conditions is not implied. The Recommended Operating
Conditions indicate conditions at which the device is functional and the device should not be operated beyond such conditions. All
voltages are measured with respect to the ground pin, unless otherwise specified.
(2) The Electrical Characteristics tables list ensured specifications under the listed Recommended Operating Conditions except as
otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and
are not ensured.
(3) Typical values represent most likely parametric norms at T
A
= +25ºC, and at the Recommended Operation Conditions at the time of
product characterization and are not specified.
(4) Datasheet min/max specification limits are specified by test or statistical analysis.
(5) Min/max specification limits specified for T
A
= –40°C to 105°C.
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