參數(shù)資料
型號: TMS37122
廠商: Texas Instruments, Inc.
英文描述: TIRIS Automotive Devices Analog Front End IC TMS37122
中文描述: 提里斯汽車設(shè)備的模擬前端集成電路TMS37122
文件頁數(shù): 61/73頁
文件大?。?/td> 1189K
代理商: TMS37122
61
August ’01
Chapter 4. Product Specification Data
4.2.3
Recommended Operating Conditions for IC
4.2.3.1
Identification Device Antennas
4.2.3.2
Resonant Circuit Capacitor
4.2.3.3
Charge Capacitor
Parameter
Sign
Note
Min
Nom
Max
Unit
Inductance of antenna for
fRES=134.2kHz
LR1,LR2,
LR3
25 oC CR1,2,3 =
470 pF +/- 5%
2.37
2.47
2.57
mH
Capacitance of LR1, LR2,
LR3
CLR
11
pF
Quality factor
QLR
33
Parameter
Sign
Note
Min
Nom
Max
Unit
Resonant Circuit Capacitor
CR
fRES = 134.2kHz
446.5
470
493.5
pF
Dielectric
NP0
Temperature Coefficient of CR
(NP0)
dCR/
CR*dT
+/-30
73
ppm/K
Dielectric
R2H
Temperature Coefficient of CR
(R2H)
dCR/
CRdT
-220/
+60
ppm/K
Quality factor
QCR
1000
Operating Voltage
RF
20
50
Vpp
Parameter
Sign
Note
Min
Nom
Max
Unit
Charge capacitor
CL
Backup Function
not used
10
22
33
nF
Dielectric of CL
CLdiel
X7R
Charge Capacitor
Temperature Variation
dCL(T)/
CL
+/-10
%
Charge Capacitor Aging
dCL(t)/CL
+0/-5
%
Insulation resistance
Rins
<16 dc
4
G
Dissipation factor
DF
0.035
Operating voltage
VCL
10
16
Vdc
Charge capacitor
CLbup
Backup Function
used
Itot*
tTELEGR
/3V
F
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