Datasheet
LM48100Q
SNAS470D –OCTOBER 2008–REVISED MARCH 2013
www.ti.com
Operating Ratings
(1)(2)
Temperature Range T
MIN
≤ T
A
≤ T
MAX
−40°C ≤ T
A
≤ +105°C
Supply Voltage V
DD
and PV
DD
3.0V ≤ V
DD
≤ 5.5V
I
2
C Supply Voltage I
2
CV
DD
1.8V ≤ I
2
CV
DD
≤ 5.5V
I
2
CV
DD
≤ V
DD
(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.
Audio Amplifier Electrical Characteristics V
DD
= 5.0V
(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) (5)
(4)
V
IN
= 0V, Both channels active
Quiescent Power Supply
I
DD
R
L
= 8Ω 4.4 9 10.8 mA (max)
Current
R
L
= ∞ 4.2 6 7.9 mA (max)
Diagnostic Mode Quiescent
I
DD
Diagnostic Mode Enabled, R
L
= ∞ 12.5 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 75 mV (max)
Voltage
T
WU
Wake-Up Time Time from shutdown to audio available 11.6 50 ms (max)
dB (max)
Minimum Gain Setting –54 ±1.0 ±2.0
dB (min)
A
V
Gain
dB (max)
Maximum Gain Setting 18 ±1.0 ±1.0
dB (min)
Mute Mute Attenuation –80 –77 –74 dB (max)
11.5 kΩ (min)
A
V
= 18dB 12.5
13.5 kΩ (max)
R
IN
Input Resistance
98 89 kΩ (min)
A
V
= –54dB 110
120 130 kΩ (max)
R
L
= 8Ω, f = 1kHz
P
O
Output Power THD+N = 10% 1.6 W
THD+N = 1% 1.3 1.05 0.96 W (min)
Total Harmonic Distortion +
THD+N P
O
= 850mW, f = 1kHz, R
L
= 8Ω 0.04 %
Noise
V
RIPPLE
= 200mV
P-P
Sine, Inputs AC GND, C
IN_
= 1μF, input referred, C
BIAS
= 2.2μF
Power Supply Rejection
PSRR
f = 217Hz 79 66 63 dB (min)
Ratio
f = 1kHz 74 dB
(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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