LM49251 Datasheet, PDF (8/42 Pages) Texas Instruments – Stereo Audio Subsystem with Class G Headphone Amplifier and Class D Speaker Amplifier with Speaker Protection

Symbol
Parameter
CMRR Common Mode Rejection Ratio
η
X_TALK
Efficiency
Crosstalk
∈_OS
Output Noise
SNR
t_A
t_R
Signal-To-Noise-Ratio
Attack Time
Release Time
V_LIMIT
Output Voltage Limit
LM49251
Conditions
Typical
Limit
(Note 6) (Note 7)
V_RIPPLE = 1V_P-P, f_RIPPLE = 217Hz, mono input
Mode 3
52
Mode 4
63
LS Mode, P_O = 680mW
90
P_O = 12mW, f = 1kHz, Mode 6
84
A-weighted, Inputs AC GND
Mode 3, mono input
44
Mode 2, stereo input
45
Mode 4, mono input
8
Mode 6, stereo input
10.2
Mode 3, P_O = 680mW
94
Mode 6, P_O = 20mW
98
Step 1, Mode 1
0.75
Step 1, Mode 1
1
Mode 3, THD+N ≤ 1%, Note 9
Voltage Level
Step 1 001
3.9
Step 2 010
4.7
Step 3 011
5.4
Step 4 100
6.2
Step 5 101
7.0
Step 6 110
7.8
Units
(Limits)
dB
dB
%
dB
μV
μV
μV
μV
dB
dB
ms
s
V_P-P
V_P-P
V_P-P
V_P-P
V_P-P
V_P-P
7
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