ELECTRICAL CHARACTERISTICS

TSC2007

www.ti.com...................................................................................................................................................... SBAS405A – MARCH 2007 – REVISED MARCH 2009

At TA = –40°C to +85°C, VDD = +1.2V to +3.6V, unless otherwise noted.

TSC2007

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

AUXILIARY ANALOG INPUT

Input voltage range

0

VDD

V

Input capacitance

12

pF

Input leakage current

–1

+1

µA

A/D CONVERTER

Resolution

Programmable: 8 or 12 bits

12

Bits

No missing codes

12-bit resolution

11

Bits

Integral linearity

±1.5

LSB(1)

VDD = 1.8V

–1.2

LSB

Offset error

VDD = 3.0V

–3.1

LSB

VDD = 1.8V

0.7

LSB

Gain error

VDD = 3.0V

0.1

LSB

TOUCH SENSORS

TA = +25°C, VDD = 1.8V, command '1011' set '0000'

51

k

Ω

PENIRQ pull-up resistor, RIRQ

TA = +25°C, VDD = 1.8V, command '1011' set '0001'

90

k

Ω

Y+, X+

6

Ω

Switch

on-resistance

Y–, X–

5

Ω

Switch drivers drive current(2)

100ms duration

50

mA

INTERNAL TEMPERATURE SENSOR

Temperature range

–40

+85

°C

VDD = 3V

1.94

°C/LSB

Differential

method(3)

VDD = 1.6V

1.04

°C/LSB

Resolution

VDD = 3V

0.35

°C/LSB

TEMP1(4)

VDD = 1.6V

0.19

°C/LSB

VDD = 3V

±2

°C/LSB

Differential

method(3)

VDD = 1.6V

±2

°C/LSB

Accuracy

VDD = 3V

±3

°C/LSB

TEMP1(4)

VDD = 1.6V

±3

°C/LSB

INTERNAL OSCILLATOR

VDD = 1.2V

3.19

MHz

VDD = 1.8V

3.66

MHz

8-Bit

VDD = 2.7V

3.78

MHz

VDD = 3.6V

3.82

MHz

Internal clock frequency, fCCLK

VDD = 1.2V

1.6

MHz

VDD = 1.8V

1.83

MHz

12-Bit

VDD = 2.7V

1.88

MHz

VDD = 3.6V

1.91

MHz

VDD = 1.6V

0.0056

%/°C

Frequency drift

VDD = 3.0V

0.012

%/°C

(1)

LSB means Least Significant Bit. With VDD/REF pin = +1.6V, one LSB is 391

µV.

(2)

Specified by design, but not tested. Exceeding 50mA source current may result in device degradation.

(3)

Difference between TEMP1 and TEMP2 measurement; no calibration necessary.

(4)

Temperature drift is –2.1mV/°C.

Copyright © 2007–2009, Texas Instruments Incorporated

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