lm49350rl National Semiconductor Corporation, lm49350rl Datasheet - Page 14

• Manufacturer Part Number: lm49350rl
• Description: 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
• Manufacturer: National Semiconductor Corporation

www.national.com
ΔA
V
T
AUXILIARY OUTPUTS
THD+N
P
PSRR
SNR
∈
V
T
STEREO ADC
THD+N
PB
R
SNR
ADC
STEREO DAC
THD+N
DAC
OUT
WU
WU
OS
OUT
OS
ADC
Symbol
CH-CH
ADC
ADC
LEVEL
LEVEL
ADC
DAC
Channel-to-Channel Gain Matching
Output Offset Voltage
Turn-On Time
Total Harmonic Distortion + Noise
Output Power
Power Supply Rejection Ratio
Signal-to-Noise Ratio
Output Noise
Output Offset Voltage
Turn-On Time
ADC Total Harmonic Distortion +
Noise
ADC Passband
ADC Ripple
ADC Signal-to-Noise Ratio
ADC Full Scale Input Level
DAC Total Harmonic Distortion +
Noise
DAC Full Scale Output Level
Parameter
AUX Gain = 0dB
From Differential Mono Input
DAC Gain = 0dB, From DAC Input
f
PMC Clock = 300kHz
AUX_LINE_OUT
R
Earpiece mode, f = 1kHz
R
Earpiece mode, f = 1kHz
R
V
Mono Input terminated, C
AUX_LINE_OUT
V
Mono Input terminated, C
Earpiece mode
Gain = 0dB, V
A-weighted, Mono Input Terminated
Gain = 0dB, V
A-weighted, Mono Input Terminated
Gain = 0dB, From Mono Input
AUX_LINE_OUT
Gain = 0dB, From Mono Input
Earpiece mode
PMC Clock = 300kHz
Differential Line Input
V
Gain = 0dB
HPF On, f
Lower -3dB Point
HPF On, Upper -3dB Point
ADC Compensated
Reference = V
6dB,
A-weighted From MIC, f
Reference = V
0dB,
A-weighted From Stereo Input, f
48kHz
I
V
Gain = 0dB
MCLK
2
RIPPLE
RIPPLE
IN
S Input
IN
L
L
L
= 5kΩ, V
= 32Ω BTL, P
= 32Ω BTL, THD+N = 1%
= 200mV
= 500mFFS
= 12.288MHz, PLL off
= 200mV
= 200mV
S
= 48kHz
OUT
14
RMS
Conditions
REF
REF
OUT
OUT
RMS
= 1V
, f = 1kHz
OUT
P-P
P-P
= V
= V
(0dBFS ) Gain =
(0dBFS ) Gain =
, f = 1kHz
, f
, f
RMS
= 20mW
OUT
OUT
RIPPLE
RIPPLE
S
REF
REF
(1%THD+N)
(1%THD+N)
= 8kHz
= 217Hz
= 217Hz
= 1μF
= 1μF
S
=
(Note 6)
Typical
0.41*f
0.004
0.03
0.08
0.03
0.05
100
100
300
0.5
0.1
28
58
94
13
28
90
94
1
7
3
1
1
LM49350
S
(Note 7)
Limit
45
62
15
6
6
mV (max)
mV (max)
mW (min)
mV (max)
dB (min)
(Limits)
Units
V
V
kHz
mV
dB
ms
dB
dB
ms
dB
dB
dB
μV
Hz
%
%
%
RMS
%
RMS