Sa,Sb Sense Bridge Inputs; Dc Loop Filter; Dcc Input Pin; Table 27: Sense Bridge Inputs Characteristics - Alcatel MTK-40131 Datasheet And User Manual

SA,SB Sense Bridge Inputs

Table 27: Sense Bridge Inputs Characteristics

Symbol Parameter
Raw-sb bridge resistance from AW to SB
Rsa-bw bridge resistance from BW to SA

DC loop filter

These limits are generally transparent
to the user, but are given here for
information.

Table 28: DC Loop Filter Characteristics

Symbol Parameter
VDCLF1 DCLF1 output voltage(ref. GNDB)
VDCLF2 DCLF2 output voltage(ref. BAT)
ZDCLF1s Output impedance at DCLF, VDCLF-
VDCLF1< 0.5V
ZDCLF2s Output impedance at DCLF, VDCLF2-
VDCLF< 0.5V

DCC Input Pin

These limits are generally transparent
to the user, but are given here for
information.

Table 29: DCC Input Characteristics

Symbol Parameter
VDCC DCC input voltage range (ref. VAG)
IinDCC DCC input current, VDCC=VAG+1V
Note:
Forcing DCC positive (ref. VAG) will result in a smaller voltage between A- and B-
wire. It a too large signal is applied at DCC, both wires are clamped at the same
voltage (only a small residual voltage remains on the line).
MTK-40131
Test Conditions Limits
Min.
VDD, VAG=0V, 25°C 205
VDD, VAG=0V, 25°C 205
Test Conditions Limits
Min.
RNG=0, PU=1 -3.5
RNG=0, PU=1 2.5
RNG=0, PU=1 0.6
RNG=0, PU=1 0.6
Test Conditions Limits
Min.
RNG=0, PU=1 -1
RNG=0, PU=1
33
Unit
Typ. Max.
257 309 Kohm
257 309 Kohm
Unit
Typ. Max.
-3.1 -2.7 V
3.0 3.5 V
1 1.4 Mohm
1 1.4 Mohm
Unit
Typ. Max.
1 V
4 10 uA