Datasheet

TLV320AIC3110

SLAS647B –DECEMBER 2009–REVISED MAY 2012

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DOSR = 384, Processing Block = PRB_P12 (Interpolation Filter B)

Power consumption = 14.42 mW

Table 5-12. PRB_P12 Alternative Processing Blocks, 14.42 mW

Processing Block Filter Estimated Power Change (mW)

PRB_P4 A 0.16

PRB_P5 A 0.3

PRB_P6 A 0.2

PRB_P13 B 0.15

PRB_P14 B 0.07

PRB_P15 B 0.18

PRB_P16 B 0.09

5.3.7 DAC Playback on Headphones, Stereo, 192 kHz, DVDD = 1.8 V, AVDD = 3.3 V,

HPVDD = 3.3 V

DOSR = 32, Processing Block = PRB_P17 (Interpolation Filter C)

Power consumption = 27.05 mW

Table 5-13. PRB_P17 Alternative Processing Blocks, 27.05 mW

Processing Block Filter Estimated Power Change (mW)

PRB_P18 C 5.28

PRB_P19 C 1.98

5.3.8 DAC Playback on Line Out (10 k-Ω load), Stereo, 48 kHz, DVDD = 1.8 V, AVDD = 3 V,

HPVDD = 3 V

DOSR = 64, Processing Block = PRB_P7 (Interpolation Filter B)

Power consumption = 12.85 mW

5.4 Audio ADC and Analog Inputs

5.4.1 MICBIAS and Microphone Preamplifier

The TLV320AIC3110 includes a microphone bias circuit which can source up to 4 mA of current and is

programmable to a 2-V, 2.5-V, or AVDD level. The level can be controlled by writing to page 1 /

Table 5-14. MICBIAS Settings

D1 D0 FUNCTIONALITY

0 0 MICBIAS output is powered down.

0 1 MICBIAS output is powered to 2 V.

1 0 MICBIAS output is powered to 2.5 V.

1 1 MICBIAS output is powered to AVDD.

During normal operation, MICBIAS can be set to 2.5 V for better performance. However, depending on the

model of microphone that is selected, optimal performance might be obtained at another setting, so the

performance at a given setting should be verified.

The lowest current consumption occurs when MICBIAS is powered down. The next-lowest current

consumption occurs when MICBIAS is set at AVDD.

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