Datasheet
LM49370
www.ti.com
SNAS356D –FEBRUARY 2007–REVISED MARCH 2012
Electrical Characteristics
(1)(2)
(continued)
Unless otherwise stated PLL_V
DD
= 3.3V, D_V
DD
= 3.3V, BB_V
DD
= 1.8V, A_V
DD
= 3.3V, LS_V
DD
= 3.3V. The following
specifications apply for the circuit shown in Figure 2 unless otherwise stated. Limits apply for 25°C.
LM49370
Symbol Parameter Conditions Units
Limit
(4)
Typical
(3)
(5)
Chip Mode '10', f
MCLK
= 12MHz,
f
S
= 48kHz, 7.9 mA
DAC on; PLL off
Digital Playback Mode Digital
Active Current
Chip Mode '10', f
MCLK
= 13MHz,
f
PLLOUT
= 12MHz, f
S
= 48kHz; 12.5 14.5 mA(max)
DAC + PLL on
Chip Mode '10', HP On, SE mode,
9.0 13.5 mA(max)
DAC inputs selected
Digital Playback Mode Analog Chip Mode '10', HP On, OCL mode,
9.4 13.5 mA(max)
Active Current DAC inputs selected
Chip Mode '10', LS On,
11.5 15.5 mA(max)
DAC inputs selected
Analog Playback Mode Digital Active Chip Mode '10', f
MCLK
= 13MHz,
0.9 1.8 mA(max)
Current DAC +ADC + PLL off
Chip Mode '10', HP On, SE mode,
5.9 9.5 mA(max)
AUX inputs selected
Analog Playback Mode Analog Active Chip Mode '10', HP On, OCL mode,
6.3 9.7 mA(max)
Current AUX inputs selected
Chip Mode '10', LS On,
8.4 12 mA(max)
AUX inputs selected
Chip Mode '10', f
MCLK
= 13MHz, f
S
=
CODEC Mode Digital Active Current 2.7 3.5 mA(max)
8kHz, DAC +ADC on; PLL Off
CODEC Mode Analog Active Current Chip Mode '10', EP On,
11.2 15.5 mA(max)
DAC inputs selected
Voice Module Mode Digital Active Chip Mode '10', f
MCLK
= 13MHz,
0.9 1.8 mA(max)
Current DAC +ADC + PLL off
Voice Module Mode Analog Active Chip Mode '10', EP + CPOUT on,
7.4 11 mA(max)
Current CPIN input selected
LOUDSPEAKER AMPLIFIER
8Ω load, LS_V
DD
= 5V 1.2 W
P
LS
Max Loudspeaker Power 8Ω load, LS_V
DD
= 4.2V 0.9 W
8Ω load, LS_V
DD
= 3.3V 0.5 0.43 W (min)
8Ω load, LS_V
DD
= 3.3V,
LS
THD+N
Loudspeaker Harmonic Distortion 0.04 %
P
O
= 400mW
0 dB Input
LS
EFF
Efficiency 84 %
MCLK = 12.000 MHz
AUX inputs terminated
Power Supply Rejection Ration C
BYPASS
= 1.0 µF
PSRR
LS
70 dB
(Loudspeaker) V
RIPPLE
= 200 mV
P-P
f
RIPPLE
= 217 Hz
SNR
LS
Signal to Noise Ratio From 0 dB Analog AUX input, A-weighted 90 80 dB(min)
e
N
Output Noise
(7)
A-weighted 62 µV
V
OS
Loudspeaker Offset Voltage 12 mV
(7) Disabling or bypassing the PLL will usually result in an improvement in noise measurements.
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