參數資料
型號: LTC4302IMS-1#TRPBF
廠商: Linear Technology
文件頁數: 10/20頁
文件大?。?/td> 298K
描述: IC BUFFER 2-WIRE BUS 10-MSOP
標準包裝: 2,500
類型: 熱交換開關
應用: 通用型緩沖器/總線擴展器
內部開關:
電源電壓: 2.7 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 10-TFSOP,10-MSOP(0.118",3.00mm 寬)
供應商設備封裝: 10-MSOP
包裝: 帶卷 (TR)
LTC4302-1/LTC4302-2
10
sn430212 430212fs
Table 1. Suggested ADDRESS 1% Resistor Values
(Refer to Figure 1 for R1 and R2)
ADDRESS
R
1(TOP)
R
2(BOTTOM)
5V IDEAL
ALLOWED ADDRESS
3.3V IDEAL
ALLOWED ADDRESS
CODE
RESISTOR
RESISTOR
VOLTAGE
VOLTAGE RANGE
VOLTAGE
VOLTAGE RANGE
00
8660
137
0.078125
0.076 to 0.079
0.051563
0.050 to 0.052
01
2800
137
0.234375
0.229 to 0.238
0.154688
0.151 to 0.157
02
1180
100
0.390625
0.383 to 0.398
0.257813
0.253 to 0.263
03
1370
169
0.546875
0.539 to 0.559
0.360938
0.356 to 0.369
04
1070
174
0.703125
0.687 to 0.711
0.464063
0.454 to 0.470
05
1070
221
0.859375
0.842 to 0.870
0.567188
0.556 to 0.574
06
4120
1050
1.015625
0.999 to 1.032
0.670313
0.660 to 0.681
07
3320
1020
1.171875
1.157 to 1.193
0.773438
0.764 to 0.788
08
3160
1150
1.328125
1.315 to 1.354
0.876563
0.868 to 0.893
09
6490
2740
1.484375
1.464 to 1.505
0.979688
0.966 to 0.993
10
2150
1050
1.640625
1.619 to 1.663
1.082813
1.068 to 1.097
11
2050
1150
1.796875
1.774 to 1.820
1.185938
1.171 to 1.201
12
2150
1370
1.953125
1.922 to 1.970
1.289063
1.269 to 1.300
13
1960
1430
2.109375
2.085 to 2.134
1.392188
1.376 to 1.408
14
2100
1740
2.265625
2.241 to 2.290
1.495313
1.479 to 1.512
15
2000
1870
2.421875
2.391 to 2.441
1.598438
1.578 to 1.611
16
1870
2000
2.578125
2.559 to 2.609
1.701563
1.689 to 1.722
17
1740
2100
2.734375
2.710 to 2.759
1.804688
1.788 to 1.821
18
1430
1960
2.890625
2.866 to 2.915
1.907813
1.892 to 1.924
19
1370
2150
3.046875
3.030 to 3.078
2.010938
2.000 to 2.031
20
1150
2050
3.203125
3.180 to 3.226
2.114063
2.099 to 2.129
21
1050
2150
3.359375
3.337 to 3.381
2.217188
2.203 to 2.232
22
2740
6490
3.515625
3.495 to 3.537
2.320313
2.307 to 2.334
23
1150
3160
3.671875
3.646 to 3.685
2.423438
2.407 to 2.432
24
1020
3320
3.838125
3.807 to 3.843
2.526563
2.512 to 2.536
25
1050
4120
3.984375
3.968 to 4.001
2.629688
2.619 to 2.640
26
221
1070
4.140625
4.130 to 4.158
2.732813
2.726 to 2.744
27
174
1070
4.296875
4.289 to 4.313
2.835938
2.830 to 2.846
28
169
1370
4.453125
4.441 to 4.461
2.939063
2.931 to 2.944
29
100
1180
4.609375
4.602 to 4.617
3.042188
3.037 to 3.047
30
137
2800
4.765625
4.762 to 4.771
3.145313
3.143 to 3.149
31
137
8660
4.921875
4.921 to 4.924
3.248438
3.248 to 3.250
OPERATIO
Select standard 1% tolerance resistor values that most
closely match the ideal resistor values. Table 1 shows
recommended values for each of the code segments. For
code 00, RTOP=8660&, RBOTTOM=137&. This yields a
voltage of 77.87mV. Resistors must be placed close to the
LTC4302s V
CC
, GND and ADDRESS pins. Care must also
be taken to minimize capacitance on ADDRESS.
In two-wire bus systems, the master issues the Address
Byte immediately following a Start Bit. The first seven bits
contain the address of the slave device being targeted by
the master. If the first two MSBs are 1s, and the next 5 bits
match the output of the LTC4302s 5-bit address A/D, an
address match occurs, and the LTC4302 acknowledges
the Address Byte and continues communicating with the
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