qt1100a Quantum Research Group, qt1100a Datasheet - Page 36

• Manufacturer Part Number: qt1100a
• Description: 10 Key Qtouch? Sensor Ic
• Manufacturer: Quantum Research Group

5 - Specifications
5.1 Absolute Maximum Specifications
Operating temp,Ta. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 ~ +85C
Storage temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -50 ~ +125C
Vdd. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 ~ +5.5V
Max continuous pin current, any control or drive pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20mA
Short circuit duration to ground, any pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . infinite
Short circuit duration to Vdd, any pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . infinite
Voltage forced onto any pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (Vdd + 0.3) Volts
5.2 Recommended Operating Conditions
V
Fosc (resonator). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12MHz
Short-term supply ripple+noise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±5mV/s
Long-term supply stability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±100mV
Cs value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1nF to 100nF
Cx value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 100pF
5.3 AC Specifications
Vdd = 5.0V, Ta = recommended, Cx = 5pF, Cs = 22nF, Fosc = 12MHz
5.4 DC Specifications
Vdd = 5.0V, Cs = 22nF, Cx = 5pF, Fosc = 12MHz; Ta = recommended range, unless noted
LQ
DD
Parameter
Parameter
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +3.3 ~ +5.0V
V
Fosc
Tsm
I
I
Tws
V
Tsu
Tpc
Tac
V
V
Tcs
Trc
Nbl
Fqt
DDR
V
Tsl
DDS
A
I
Tr
DDS
OH
HL
OL
IL
IL
R
Supply current, run mode
Supply current, sleep mode
Supply turn-on slope
Low input logic level
High input logic level
Low output voltage
High output voltage
Input leakage current
Acquisition resolution
Description
Oscillator range
Start-up time from cold start
Recalibration time
Comms start-up time from
reset
Comms start-up time from
Wake
Scanport latency
Charge-transfer duration
Acquisition time, all
channels
Burst length, each channel
Burst frequency range
Response time
Max allowable sleep time
Description
Vdd-0.5
Min
Min
100
175
3.5
6
Tsu+Trc
Typ
Typ
400
450
150
500
2.9
1.7
1.4
12
30
90
2
9
2
36
Max
Max
500
160
120
235
700
0.7
0.5
14
20
10
±1
5
Units
counts
Units
MHz
bits
kHz
mA
V/s
µA
µA
ms
ms
ms
ms
ms
µs
µs
µs
V
V
V
V
Copyright © 2003-2005 QRG Ltd
@ Vdd = 5.0
@ Vdd = 4.0
@ Vdd = 3.6
@ Vdd = 3.3
@ Vdd = 5.0
@ Vdd = 3.3
Req’d for start-up, w/o external reset ckt
7mA sink
2.5mA source
Notes
Resonator frequency
Does not include recalibration time
Burst Spacing = 3ms; changes
proportionately at other spacings
From Sleep mode
Burst Spacing = 3ms
Spread spectrum range
BS = 3ms, DI = 3, FDI = 1
QT1100A-ISG R3.02/1105
Notes