CD3268A datasheet(8/35 Pages) TI2

Teilenummer	CD3268A

Bauteilbeschribung	CD326x Audio Interface Transmitter for Specially Enabled Headsets

PDF	35 Pages

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Hersteller	TI2 [Texas Instruments]

Direct Link	https://www.ti.com

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8 / 35 page

VSHUNT

MIC

TONE

MICPWR

GND

REM

CD326x

VMICBIAS

2.84V

100nF

2.21k

–

VS2

1.45V

VMIC must rise above 2.35V (typ) to enter tone mode before measurement is taken.

IMIC−T=IMICBIAS − VMIC−1.45

1.0k

IVSHUNT−T= VMIC−1.45

1.0k −IVS2

Figure 6-3. Tone Mode Quiescent Current Consumption Measurement

VSHUNT

MIC

TONE

MICPWR

GND

REM

CD326x

VMICBIAS

2.84V

100nF

2.21k

–

VS2

1.45V

20k

300pF

6.81k

VMIC must rise above 2.35V (typ) to enter tone mode

before VS2 is applied.

Current measurements are taken

during calibration tone.

IMIC−T=IMICBIAS − VMIC−1.45

1.0k

IVSHUNT−T= VMIC−1.45

1.0k −IVS2

Figure 6-4. Tone Mode Active Current Consumption Measurement

CD3268A, CD3269A

SCHS463 – MAY 2025

www.ti.com

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