TLV320AIC3253

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SLOS631 – MARCH 2010

Electrical Characteristics, Bypass Outputs

PLL disabled unless otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ANALOG BYPASS TO HEADPHONE AMPLIFIER, DIRECT MODE

Load = 16

Ω (single-ended), 50pF;

Input and Output CM=0.9V;

Device Setup

Headphone Output on LDOIN Supply;

INL routed to HPL and INR routed to HPR;

Channel Gain=0dB

Gain Error

±0.4

dB

Idle Channel, INL and INR ac-shorted to

3

ground

THD

Total Harmonic Distortion

446mVrms, 1-kHz input signal

–82

dB

(1)

All performance measurements done with 20-kHz low-pass filter and, where noted, A-weighted filter. Failure to use such a filter may

result in higher THD+N and lower SNR and dynamic range readings than shown in the Electrical Characteristics. The low-pass filter

removes out-of-band noise, which, although not audible, may affect dynamic specification values

Electrical Characteristics, Microphone Interface

At 25°C, AVdd, DVdd, IOVDD = 1.8V, LDO_in = 1.8V, AVdd LDO disabled, Cref = 10 mF on REF PIN, PLL disabled unless

otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

MICROPHONE BIAS

Bias voltage

Bias voltage CM=0.9V, LDOin = 3.3V, no load

Micbias Mode 0, Connect to AVdd or LDOin

1.25

V

Micbias Mode 1, Connect to LDOin

1.7

V

Micbias Mode 2, Connect to LDOin

2.5

V

Micbias Mode 3, Connect to AVdd

AVdd

V

Micbias Mode 3, Connect to LDOin

LDOin

V

CM=0.75V, LDOin = 3.3V

Micbias Mode 0, Connect to AVdd or LDOin

1.04

V

Micbias Mode 1, Connect to AVdd or LDOin

1.42

V

Micbias Mode 2, Connect to LDOin

2.08

V

Micbias Mode 3, Connect to AVdd

AVdd

V

Micbias Mode 3, Connect to LDOin

LDOin

V

Output Noise

CM=0.9V, Micbias Mode 2, A-weighted, 20Hz

10

to 20kHz bandwidth,

Current load = 0mA.

Current Sourcing

Micbias Mode 2, Connect to LDOin

3

mA

Micbias Mode 3, Connect to AVdd

160

Inline Resistance

Ω

Micbias Mode 3, Connect to LDOin

110

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