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LM49350RLEVAL Arkusz danych(PDF) 11 Page - Texas Instruments

Numer części LM49350RLEVAL
Szczegółowy opis  LM49350 Boomer짰 Audio Power Amplifier Series High Performance Audio Codec Sub-System with a Ground-Referenced Stereo Headphone Amplifier & an Ultra Low EMI Class D Loudspeaker Amplifier with Dual I2S/PCM Digital Audio Interfaces
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Producent  TI [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI - Texas Instruments

LM49350RLEVAL Arkusz danych(HTML) 11 Page - Texas Instruments

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LM49350, LM49350RLEVAL
www.ti.com
SNAS359D – SEPTEMBER 2008 – REVISED JUNE 2012
ELECTRICAL CHARACTERISTICS: A_VDD = LS_VDD = 3.3V; 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.
LM49350
Units
Symbol
Parameter
Conditions
(Limits)
Typical(3)
Limit(4)
Auxiliary Input Amplifier Quiescent
AUXINIDD
Stereo Auxiliary Inputs enabled
0.7
mA
Current
AUX_LINE_OUT enabled
0.5
mA
Auxiliary Output Amplifier Quiescent
AUXOUTIDD
Current
Earpiece mode enabled
1.0
mA
LOUDSPEAKER AMPLIFIER
LSEFF
Loudspeaker Efficiency
PO = 400mW, RL = 8Ω
83
%
PO = 400mW, f = 1kHz,
THD+N
Total Harmonic Distortion + Noise
0.07
%
RL = 8Ω, Mono Input Signal
RL = 8Ω, f = 1kHz, THD+N = 1%, Mono Input Signal
LS_VDD = 3.3V
495
400
mW (min)
LS_VDD = 4.2V
825
mW
LS_VDD = 5V
1.2
W
PO
Output Power
RL = 4Ω, f = 1kHz, THD+N = 1%, Mono Input Signal
LS_VDD = 3.3V
800
mW
LS_VDD = 4.2V
1.4
W
LS_VDD = 5V
2
W
VRIPPLE = 200mVP-P
fRIPPLE = 217Hz
PSRR
Power Supply Rejection Ration
73
55
dB (min)
Mono Input Terminated
VREF = 1.0μF
Reference = VOUT (1% THD+N )
SNR
Signal-to-Noise Ratio
Gain = 0dB, A-weighted
95
85
dB (min)
Mono Input Terminated
eOS
Gain = 0dB, A-weighted,
Output Noise
35
µV
Mono Input Terminated
VOS
Offset Voltage
Gain = 0dB, form Mono Input
10
50
mV (max)
TWU
Turn-On Time
PMC Clock = 300kHz
28
ms
HEADPHONE AMPLIFIERS
PO = 7.5mW, f = 1kHz,
THD+N
Total Harmonic Distortion + Noise
RL = 32Ω
0.025
0.1
% (max)
Stereo Analog Input Signal
RL = 32Ω, f = 1kHz, THD+N = 1%,
PO
Headphone Output Power
69
60
mW (min)
Stereo Analog Input Signal
VRIPPLE = 200mVP-P, fRIPPLE = 217Hz
Stereo Analog Inputs Terminated,
PSRR
Power Supply Rejection Ratio
97
75
dB (min)
VREF = 1.0μF, Mono Differential Input
Mode
Reference = VOUT (1% THD+N )
Gain = 0dB, A-weighted
106
98
dB (min)
Stereo Inputs Terminated
SNR
Signal-to-Noise Ratio
Reference = VOUT (0dBFS ) Gain =
0dB,
96
90
dB (min)
A-weighted, I2S Input = Digital Zero
Gain = 0dB, A-weighted,
8
µV
Stereo Inputs Terminated
eOS
Output Noise
Gain = 0dB, A-weighted,
16
µV
I2S Input = Digital Zero
PO = 60mW, f = 1kHz,
XTALK
Crosstalk
RL = 32Ω
71
dB
Stereo Analog Input Signal
ΔACH-CH
Channel-to-Channel Gain Matching
0.03
dB
Copyright © 2008–2012, Texas Instruments Incorporated
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