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LM49352 Datasheet(PDF) 11 Page - Texas Instruments

Part # LM49352
Description  Boomer Mono Class D Audio Codec Subsystem with Ground Referenced Headphone Amplifiers, Earpiece Driver, and Audio DSP
PDF  106 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LM49352 Datasheet(HTML) 11 Page - Texas Instruments

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LM49352
www.ti.com
SNAS467E – MARCH 2009 – REVISED MARCH 2013
Electrical Characteristics
A_VDD = LS_VDD = 3.3V; HP_VDD = D_VDD = I/O_VDD = 1.8V
(1)(2) (continued)
The following specifications apply for RL(LS) = 8Ω, RL(HP) = 32Ω, f = 1kHz, unless otherwise specified. Limits apply for TA =
25°C.
LM49352
Units
Symbol
Parameter
Conditions
Typical
Limit
(Limit)
(3)
(4)
fS = 48kHz, Stereo
ADCIDD
ADC Total Active Current
From A_VDD
5.8
mA
From D_VDD
1.3
mA
fS = 48kHz, Stereo
DACIDD
DAC Total Active Current
From A_VDD
3.1
mA
From D_VDD
1
mA
Mono/Auxiliary Input Amplifier
Mono and AUX Input Amplifiers
AUXINIDD
0.6
mA
Quiescent Current
enabled
AUXOUT enabled
0.4
mA
Auxiliary Output Amplifier Quiescent
AUXOUTIDD
Current
Earpiece Mode
1.1
mA
LOUDSPEAKER AMPLIFIER
PO = 970mW, RL = 8Ω,
LSEFF
Loudspeaker Efficiency
93
%
LS_VDD = 4.2V
PO = 300mW, f = 1kHz,
THD+N
Total Harmonic Distortion + Noise
0.03
%
RL = 8Ω, Mono Input Signal
RL = 8Ω, f = 1kHz, THD+N = 1%, Mono Input Signal
LS_VDD = 5V
1.4
W
LS_VDD = 4.2V
970
mW
LS_VDD = 3.3V
590
510
mW (min)
PO
Output Power
RL = 4Ω, f = 1kHz, THD+N = 1%,
Mono Input Signal
LS_VDD = 5V
2.4
W
LS_VDD = 4.2V
1.65
W
LS_VDD = 3.3V
980
mW
VRIPPLE = 200mVP-P
fRIPPLE = 217Hz
Mono Input Terminated
75
60
dB (min)
VREF = 1.0μF, Input Referred
PSRR
Power Supply Rejection Ratio
LS Gain = 12dB
VRIPPLE = 200mVP-P
fRIPPLE = 217Hz
74
dB
From DAC, DAC gain = 0dB
Reference = VOUT (1% THD+N )
Mono gain = 0dB, A-weighted
Mono Input Terminated, LS Gain = 8dB
LS_VDD = 4.2V
95
dB
LS_VDD = 3.3V
93
88
dB (min)
SNR
Signal-to-Noise Ratio
Reference = VOUT (1% THD+N )
DAC Gain = 0dB, A-weighted
fS = 48kHz, OSR = 128
LS Gain = 8dB
LS_VDD = 4.2V
91
dB
LS_VDD = 3.3V
89
dB
eOS
Mono gain = 0dB, A-weighted,
Output Noise
Mono Input Terminated, Input
43
µV
Referred
VOS
Offset Voltage
Mono gain = 0dB, from Mono Input
10
50
mV (max)
Copyright © 2009–2013, Texas Instruments Incorporated
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