TPIC83000IPWRQ1 datasheet(8/44 Pages) TI

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Over Pressure

Input

(differential)

VIHS

Negative Pressure

Comparator Output

Output

DIAG

Acknowledge

Time

Deglitch time

TPIC83000-Q1

SLDS171 – NOVEMBER 2009

www.ti.com

Programmable Input Over-Level Detection

Table 2. Input Over-Level Detection Ranges

PARAMETER

MIN

MAX

NOTE

Pressure range

-19.94 mV

-6.93 mV

VSIP – VSIN TRHSGAIN = 5

Programmable threshold level

-21.35 mV

-7.43 mV

TRHSGAIN = 4

Deglitch filter time

0.8 ms

3.2 ms

EEPROM programmable

Programmable step size

0.93 mV

TRHSGAIN = 4

Figure 2. Detection of Negative Pressure Condition

Power Sequence

Power Up

•

The IC starts functioning if Vcc is more than UVcc + HVcc (~4 V).

•

Power on reset for digital circuit is ~2.5 V.

•

EEPROM data loaded to registers

•

DO is held low for ~10 ms.

Power Down

•

When Vcc is less than UVcc, disable DO.

Glitch on Vcc

•

Deglitch time : 320 ns (typical)

•

Functionality during the glitch : disable DO

•

Functionality after Vcc recovery: same as the Power up. EEPROM data is reloaded to registers if the glitch is

lower than 2.5 V (typ).

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