TPA5050_08 Datasheet, PDF (14/21 Pages) Texas Instruments – STEREO DIGITAL AUDIO LIP-SYNC DELAY WITH I2C CONTROL

TPA5050
SLOS492B – MAY 2006 – REVISED MAY 2007
www.ti.com
DEVICE CURRENT CONSUMPTION
The TPA5050 draws different amounts of supply current depending upon the conditions under which it is
operated. As V_DD increases, so too does I_DD. Likewise, as V_DD decreases, I_DD decreases. The same is true of
the sampling frequency, fs. An increase in fs causes an increase in I_DD. Figure 11 illustrates the relationship
between operating condition and typical supply current.
SUPPLY CURRENT
vs
SAMPLING FREQUENCY
5
BCLK = 64 fs
4.5 ^{Data = 24 bit}
4
V_DD = 3.6 V
3.5
3
2.5
V_DD = 3.3 V
2
1.5
V_DD = 3 V
1
0.5
0
32 52 72 92 112 132 152 172 192
fs - Sampling Frequency - kHz
Figure 11. Typical Supply Current
14
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