L9177ATR datasheet(21/55 Pages) STMICROELECTRONICS

21 / 55 page

2.5.16

Variable reluctance sensor interface

Table 21. Variable reluctance sensor interface electrical characteristics

Symbol

Parameter

Condition

Min

Typ

Max

Unit

VHTH

Input high to low differential threshold

voltage at VRIN+ and VRIN- nodes

-50

VCM

Common mode operating range at

VRIN+ and VRIN-

1.5

Vcm_internal Internal common mode voltage

Switch off hysteresis current

0.27*VDD 0.3*VDD 0.33*VDD

Vdiagth_H (1) Diagnostic high threshold

Diagnostic voltage referred to VRIN- (see

Figure 14)

0.67*VDD 0.75*VDD 0.82*VDD

Vdiagth_L (1) Diagnostic low threshold

0.18*VDD 0.2*VDD 0.22*VDD

Idiag

Diagnostic current

Current from VRIN- when diagnostic on

µA

Rinternal_

common

Internal common mode resistor

Switch off hysteresis current

200

350

kΩ

IIB

Input bias current

VRIN+ = VRIN- = 1.5 V

µA

Ileak

Output leakage

VROUT = 5 V

µA

VCLPH

Input high clamping voltage

VRIN+ = |VRIN-| = 20 mA

VCLPL

Input low clamping voltage

VRIN+ = |VRIN-| = |20 mA|

-1.5

-0.3

tof

Output fall time

CLOAD= 20 pF, RLOAD = 5 kΩ

300

tof_1nf

Output fall time

CLOAD= 1nF

1.5

µs

VOUTL

Output buffer low voltage

Isink= 2 mA

0.6

IOUTL

Output current capability

Vout= 0.6 V

tprop

Propagation delay

VRS INM = 0.5 V, INP applied to 1 V to make

VRS OUT commuted

0.1

0.45

0.8

µs

Tdgc_VRS OFF Diagnostic Deglitch filter time

Guaranteed by scan

µs

1. if (VRIN- > Vdiagth_H) or (VRIN- < Vdiagth_L) then Fault is detected.

L9177A

Electrical characteristics

DS12175 - Rev 5

page 21/55

L9177ATR Datenblatt(PDF) 21 Page - STMicroelectronics

L9177ATR Datenblatt(HTML) 21 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55

Datenblatt Download

Link URL