TMS37122 Datasheet, PDF (70/73 Pages) Texas Instruments – TIRIS Automotive Devices Analog Front End IC TMS37122

Analog Front End IC TMS37122 - Reference Guide
4.2.4.12 CLKA Sensitivity
August ’01
Parameter
Clock Regenerator
Sensitivity, CLKA
4.2.4.13 EOBA Sensitivity
Sign
Vclka
Note
Min Nom
Max
Unit
VWakeA/
2
mVpp
Parameter
Modulation Depth for valid
EOBA
Modulation Depth for idle
EOBA
EOBA Activation Delay
EOB Deactivation Delay
Sign
Note
Min Nom
Max
Unit
Vmax=
m
VwakeA,
Note1
33
(a=50%)
%
m(idle)
Vmax=VwakeA,
Note 1
2
(a=
96%)
VRF = VWAKE to
dtEOBA
VWAKE/2,
15
46
90
µs
VBAT=2V
Step VRF =
dtNEOB
VWAKE/2 to
VWAKE,
15
42
60
µs
VBAT=2V
Note 1: a= Vmin / Vmax = (1-m) / (1+m)
4.2.4.14 AGC Amplifier
Parameter
Sign
Note
Min Nom
Max
Unit
Coupling Capacity
Ccpl
1
pF
Input Impedance/ Low
Amplitude
Rin
Vrf=5mVpp,
fTX= 134.2kHz
2
MΩ
Input Impedance/ High
Amplitude
Rin
Vrf=15Vpp,
fTX=134.2 kHz
1.2
MΩ
Center frequency of
amplifier
fc_AGC
120
kHz
-3dB Band-width of amplifier
dfAGC
-3dB
50
kHz
-20dB Band-width of
amplifier
dfAGC
-20dB
270
kHz
70