LM48100Q
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SNAS470D –OCTOBER 2008–REVISED MARCH 2013
Audio Amplifier Electrical Characteristics VDD = 5.0V(1)(2) (continued)
The following specifications apply for Programmable Gain = 0dB, RL = 8Ω, f = 1kHz, unless otherwise specified. Limits apply
for TA = 25°C.
LM48100Q
Typical Room
Extended
Units
(Limits)
(3)
Symbol
Parameter
Conditions
Temp Temp Limits
(4) (5)
Limits
(4)
SNR
Signal-to-Noise-Ratio
Output Noise
POUT = TBDmW, f = 1kHz
AV = 0dB, A-weighted Filter
FAULT = 0, VOUT(FAULT)= 0.4V
104
12
3
dB
μV
∈
OS
IOUT(FAULT)
FAULT Output Current
mA
Short between either OUTA to VDD or
GND, or OUTB to VDD or GND
Short Circuit
Output to Supply Short
Circuit Detection Threshold
RFAULT
3
7.5
3
7.5
kΩ (min)
kΩ (max)
Open Circuit
Short between both OUTA and OUTB to
VDD or GND
Short Circuit
Output to Supply Short
Circuit Detection Threshold
RFAULT
6
15
kΩ (min)
kΩ (max)
Open Circuit
Open Circuit Detection
Threshold
100
200
Ω (min)
Ω (max)
ROPEN
Open circuit between OUTA and OUTB
Short circuit between OUTA and OUTB
Output to Output Short
Circuit Detection Threshold
2
6
Ω (min)
Ω (max)
RSHT
ISHTCKT
TSD
Short Circuit Current Limit
1.47
170
58
1.67
2
A (max)
Thermal Shutdown
Threshold
°C
tDIAG
Diagnostic Time
ms
Audio Amplifier Electrical Characteristics VDD = 3.6V(1)(2)
The following specifications apply for Programmable Gain = 0dB, RL = 8Ω, f = 1kHz, unless otherwise specified. Limits apply
for TA = 25°C.
LM48100Q
Typical
Room
Temp
Extended
Temp
Units
(Limits)
(3)
Symbol
Parameter
Conditions
Limits
Limits
(4)
(4) (5)
VIN = 0V, Both channels active
RL = 8Ω
RL = ∞
Quiescent Power Supply
Current
IDD
3.8
3.6
8.5
5
10.8
7
mA (max)
mA (max)
Diagnostic Mode Quiescent
Power Supply Current
IDD
ISD
Diagnostic Mode Enabled
Shutdown Enabled
11.7
0.01
8.8
14.5
1
mA (max)
µA (max)
mV (max)
ms (max)
Shutdown Current
Differential Output Offset
Voltage
VOS
TWU
VIN = 0V, RL = 8Ω
50
50
76
Wake-Up Time
Time from shutdown to audio available
11.5
(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 TA = +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 TA = –40°C to 105°C.
Copyright © 2008–2013, Texas Instruments Incorporated
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