7 Electrical specifications

7.1 ABSOLUTE MAXIMUM SPECIFICATIONS

Operating temp................................................................................ as designated by suffix

Max continuous pin current, any control or drive pin.............................................................. ±40mA

Short circuit duration to ground, any pin......................................................................... infinite

Voltage forced onto any pin.................................................................... -1V to (Vdd + 0.5) Volts

7.2 RECOMMENDED OPERATING CONDITIONS

Short-term supply ripple+noise.................................................................................. ±5mV

Long-term supply stability.................................................................................... ±100mV

Cs value................................................................................................. 1 to 500nF

Cx value.................................................................................................. 0 to 100pF

7.3 AC SPECIFICATIONS

Vdd = 3.0, Ta = recommended operating range, Cs=100nF unless noted

0.51

Burst constant

K

µs

30

Request pulse

Cs = 4.7nF to 200nF; Cx = 0

ms

25

0.5

Burst length

ns

830

Charge/transfer duration

Notes

Units

Max

Typ

Min

Description

Parameter

7.4 DC specifications

Vdd = 3.0V, Cs = 10nF, Cx = 5pF, Ta = recommended range, unless otherwise noted

Combined for both SNS pins

pF

11

Internal pin capacitance

Figs 7-4, 7-5

fF

7

1,000

Resolution per bit

S

bits

16

Acquisition resolution

V

Vdd-0.6

High output voltage

V

0.4

Low output voltage

Vdd = 2.5 to 5.0V

V

0.6 Vdd

Input high voltage

Vdd = 2.5 to 5.0V

V

0.3 Vdd

Input low voltage

Dependent on duty cycle

µA

1,500

60

Supply current

V

5.5

2

Supply voltage

Notes

Units

Max

Typ

Min

Description

Parameter

8

QT300 R1.02/0204