Datasheet

TSC2017
www.ti.com SBAS472 –DECEMBER 2009
ELECTRICAL CHARACTERISTICS
At T
A
= –40°C to +85°C, V
DD
= +1.6V to +3.6V, unless otherwise noted.
TSC2017
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
AUXILIARY ANALOG INPUT
Input voltage range 0 V
DD
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)
V
DD
= 1.8V –1.2 LSB
Offset error
V
DD
= 3.0V –3.1 LSB
V
DD
= 1.8V 0.7 LSB
Gain error
V
DD
= 3.0V 0.1 LSB
TOUCH SENSORS
T
A
= +25°C, V
DD
= 1.8V, command '1011' set '0000' 51 kΩ
PENIRQ pull-up resistor, R
IRQ
T
A
= +25°C, V
DD
= 1.8V, command '1011' set '0001' 90 kΩ
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
V
DD
= 3V 1.94 °C/LSB
Differential
method
(3)
V
DD
= 1.6V 1.04 °C/LSB
Resolution
V
DD
= 3V 0.35 °C/LSB
TEMP1
(4)
V
DD
= 1.6V 0.19 °C/LSB
V
DD
= 3V ±2 °C/LSB
Differential
method
(3)
V
DD
= 1.6V ±2 °C/LSB
Accuracy
V
DD
= 3V ±3 °C/LSB
TEMP1
(4)
V
DD
= 1.6V ±3 °C/LSB
INTERNAL OSCILLATOR
V
DD
= 1.6V 3.61 MHz
V
DD
= 1.8V 3.66 MHz
8-Bit
V
DD
= 2.7V 3.78 MHz
V
DD
= 3.6V 3.82 MHz
Internal clock frequency, f
CCLK
V
DD
= 1.6V 1.8 MHz
V
DD
= 1.8V 1.83 MHz
12-Bit
V
DD
= 2.7V 1.88 MHz
V
DD
= 3.6V 1.91 MHz
V
DD
= 1.6V 0.0056 %/°C
Frequency drift
V
DD
= 3.0V 0.012 %/°C
(1) LSB means Least Significant Bit. With VDD/REF pin = +1.6V, one LSB is 391μV.
(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.
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