DocID024648 Rev 4

9/21

AIS1200PS

Mechanical and electrical specifications

2.3

Control timing

Table 5. Control timing

Symbol

Parameter

Conditions(1)

Min

Typ

Max

Unit

fc

Bessel filter cutoff frequency

-3 dB

157

175

193

Hz

Att

Signal attenuation

1 kHz

-26

-20

dB

2 kHz

-38

-35

fosc

Internal oscillator frequency

11.63

12.25

12.9

MHz

tref

Refresh period

212

224

236

s

Tbit

Bit duration

125 kbps

7.6

8

8.4

s

DC

Duty cycle

(tfall,80 - trise,20)/Tbit

(tfall,20 - trise,80)/Tbit

47

50

53

%

Tdelay Signal processing time(2)(3)

1.31

ms

Tset

Settling time for quiescent current

I = IQ ± 2 mA

5

ms

Treset Recovery time after high-g shock(3)

10

ms

TTH

Undervoltage reset delay

Ramping BUSIN from 16 V to 0 V

over 2

s

200

s

TRJ

Microcut rejection time(3)

Ramping BUSIN from 16 V to 0 V

over 2

s

10

s

1. Creg = 1.0 F ± 40%, ceramic, Cauth = 0.047 F ± 50%, ceramic.

2. Bessel filter =1.24 ms, [SAR A/D + C/V + Gain] = 0.07 ms.

3. Verified by characterization, not tested in production.