TSC2102IDA datasheet(5/54 Pages) TI

5 / 54 page

TSC2102

SLAS379A− APRIL 2003 − REVISED JUNE 2004

www.ti.com

ELECTRICAL CHARACTERISTICS (continued)

At +25

°C, AVDD,DRVDD,IOVDD = 3.3 V, DVDD = 1.8 V, Int. Vref = 2.5 V, Fs (Audio) = 48 kHz, unless otherwise noted (continued)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

POWER SUPPLY REQUIREMENTS

Power supply voltage

AVDD

2.7

3.6

DRVDD

2.7

3.6

IOVDD

2.7

3.6

DVDD

1.525

1.95

Touch-screen ADC quiescent current

IAVDD, host controlled AUX conversion at

10 ksps with external reference

Touch-screen ADC quiescent current

IDVDD, host controlled AUX conversion at

10 ksps

µA

Analog supply current – Audio play back only

IAVDD + IDRVDD, headphone driver

bypassed, VGND off, PLL off, no signal

2.1

Analog supply current – Audio play back only

IAVDD + IDRVDD, headphone driver and

VGND on, PLL off, no signal

7.1

Digital supply current – Audio play back only

48 ksps, PLL off, no signal

2.2

PLL current

IDRVDD

PLL current

IDVDD

0.8

Total current

Hardware power down. All digital inputs at 0 V

or IOVDD.

µA

(1) DAC PSRR measurement is calculated as:

PSRR

+ 20 log

VSIGsup

HPR L

where VSIGsup is the ac signal applied on AVDD, which is 100 mVPP at 1 kHz, and VHPR/L is the peak-to-peak ac signal seen on HPR and HPL

outputs.

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