PowerTune
2.5.2.2
DAC, Stereo, 48kHz, Lowest Power Consumption
Using its full potential, the device can be used with even lower power consumption than shown in the
tabulated PowerTune information. 94dB SNR, 48kHz stereo playback to the headphone amplifier outputs
can be achieved with a measured power consumption of 4.1mW. For more information on the setup of
such modes please see the product folder of the device at
DOSR = 64, Interpolation Filter B, DVdd = 1.26V
CM = 0.75V
CM = 0.9V
CM = 0.75V
UNIT
AVdd=1.5V
AVdd=1.8V
AVdd=1.5V
PRB_P8
PRB_P8
PRB_P7
PTM_P1
PTM_P1
PTM_P4
0dB full scale
(1)
75
100
375
mV
RMS
HP out
Effective SNR w.r.t. 0dB full scale
87.8
90.4
97.8
dB
(32
Ω
load)
Power consumption
(2)
5.3
6.0
5.9
mW
Power consumption
(3)
4.5
5.2
5.1
mW
(1)
Reduced 0dB full-scale swing can be compensated by applying appropriate gain in the output drivers see .
(2)
Measured data using PRB_P8.
(3)
Calculated data for PRB_P7.
Alternative processing blocks:
Processing Block
Filter
Est. Power Change (mW)
(1)
PRB_P1
A
0
PRB_P2
A
+1.5
PRB_P3
A
+0.8
PRB_P7
B
–0.8
PRB_P9
B
0
PRB_P10
B
+0.8
PRB_P11
B
0
PRB_P23
A
0
PRB_P24
A
+1.5
PRB_P25
A
+1.5
(1)
Estimated power change is w.r.t. PRB_P8.
2.5.2.3
DAC, Mono, 48kHz, Highest Performance, DVdd = 1.8V, AVdd = 1.8V
DOSR = 128, Processing Block = PRB_P13 (Interpolation Filter B)
Device Common Mode Setting = 0.75V
Device Common Mode Setting = 0.9V
PTM_P1
PTM_P2
PTM_P3
PTM_P4
PTM_P1
PTM_P2
PTM_P3
PTM_P4
UNIT
0dB full scale
(1)
75
211
375
375
100
281
500
500
mV
RMS
HP out
Effective SNR w.r.t.
88.6
93.1
97.1
97.0
91.1
95.3
99.9
99.8
dB
(32
Ω
0dB full scale
load)
Power
6.1
6.5
6.9
6.9
6.1
6.5
6.9
6.9
mW
consumption
(2)
Power
5.3
5.7
6.1
6.1
5.3
5.7
6.1
6.1
mW
consumption
(3)
(1)
Reduced 0dB full-scale swing can be compensated by applying appropriate gain in the output drivers see .
(2)
Measured data using PRB_P13.
(3)
Calculated data for PRB_P12.
Alternative processing blocks:
52
TLV320DAC3203 Application
SLAU434 – May 2012
Copyright © 2012, Texas Instruments Incorporated
