LM4923_14 Datasheet, PDF (4/23 Pages) Texas Instruments – 1.1 Watt Fully Differential Audio Power Amplifier With Shutdown Select

LM4923, LM4923LQBD
SNAS211D – JULY 2004 – REVISED FEBRUARY 2009
www.ti.com
Electrical Characteristics V_DD = 5V⁽¹⁾⁽²⁾
The following specifications apply for V_DD = 5V, A_V = 1, and 8Ω load unless otherwise specified. Limits apply for T_A = 25°C.
Symbol
Parameter
Conditions
LM4923
Typical ⁽³⁾
Limit ⁽⁴⁾
Units
(Limits)
I_DD
Quiescent Power Supply Current
I_SD
Shutdown Current
P_o
Output Power
THD+N
PSRR
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
V_IN = 0V, no load
V_IN = 0V, R_L = 8Ω
V_SHUTDOWN = GND
THD = 1% (max); f = 1 kHz
LM4923, R_L = 8Ω
P_o = 0.4 Wrms; f = 1kHz
V_ripple = 200mV sine p-p
f = 217Hz⁽⁵⁾
f = 1kHz⁽⁵⁾
4
4
9
9
mA (max)
0.1
1
µA (max)
1.1
1
0.02
%
85
73
85
73
CMRR
Common_Mode Rejection Ratio
f = 217Hz,
50
dB
V_CM = 200mV_pp
V_OS
Output Offset
V_IN = 0V
4
mV
V_SDIH
Shutdown Voltage Input High
0.9
V
V_SDIL
Shutdown Voltage Input Low
0.7
V
(1) All voltages are measured with respect to the ground pin, unless otherwise specified.
(2) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which guarantee specific performance limits. This assumes that the device is within the
Operating Ratings. Specifications are not guaranteed for parameters where no limit is given, however, the typical value is a good
indication of device performance.
(3) Typicals are measured at 25°C and represent the parametric norm.
(4) Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
(5) 10Ω terminated input.
4
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