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): 64/73頁
文件大?。?/td> 1189K
代理商: TMS37122
64
Analog Front End IC TMS37122 - Reference Guide
August ’01
4.2.4.4
Trimming Capacitors and Switches
4.2.4.5
CLKA Watchdog Circuit
Parameter
Sign
Note
Min
Nom
Max
Unit
Trimming Steps
Tstep
256
Min. Trimming Capacitor
CT0
0
Trimming Capacitor 1
CT1
25 oC
0.5
0.6
0.7
pF
Trimming Capacitor 2
CT2
25 oC
1.0
1.2
1.4
pF
Trimming Capacitor 3
CT3
25 oC
2.0
2.4
2.8
pF
Trimming Capacitor 4
CT4
25 oC
4.0
4.7
5.4
pF
Trimming Capacitor 5
CT5
25 oC
8.0
9.4
10.8
pF
Trimming Capacitor 6
CT6
25 oC
16
18.8
21.6
pF
Trimming Capacitor 7
CT7
25 oC
32
37.6
43.2
pF
Trimming Capacitor 8
CT8
25 oC
64
75.3
86.6
pF
Max. Trimming Capacitor
(CT = CT1+CT2....+CT8)
CT
25 oC
127.5
-15
150
0
172.5
+15
pF
%
Voltage Coefficient of CT
dCT/dV
0.1
pF/V
Temp. Coefficient of CT
dCT/dT
0.02
pF/K
'On' Res. Trim Switch 1
RT1
VPP = 16 V
800
'On' Res. Trim Switch 2
RT2
VPP = 16 V
400
'On' Res. Trim Switch 3
RT3
VPP = 16 V
400
'On' Res. Trim Switch 4
RT4
VPP = 16 V
200
'On' Res. Trim Switch 5
RT5
VPP = 16 V
200
'On' Res. Trim Switch 6
RT6
VPP = 16 V
100
'On' Res. Trim Switch 7
RT7
VPP = 16 V
50
'On' Res. Trim Switch 8
RT8
VPP = 16 V
28.0
'Off' Res. Trim S. 1 ... 8
RT1..8
VPP = 16 V
1
Μ
Parameter
Sign
Note
Min
Nom
Max
Unit
CLKA Watchdog Time
twdg
VBAT = 2 ...4 V
500
800
2600
μ
s
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