. .
. 40 . . 0÷5 , 30 , .
. , DA1 DA2, (1+ 2R2/R1) , . , D3 , (R6/R4) [6]. 14022. :
1)
2)
3)
4)
5)
2-29 0,1%.
1 = 10, 2 = 16,7. .
R2 = R3, R4 = R5, R6 = R7. R1 = 47 E3 [9]; . . R2 = R3 = E96 [9].
2 = 16,7. R4 = R5 = 1 .
R6 = R7 = 2R4 = 16,7 . 96 R6 = R7 = 16,5 .
2
. [6]. f c = 100 . f = 110 .
, , 2- . 2- .
DA4 14022, 2-29 1% 10-17 10%. , 10 .
3
R8 = R9 = 47 3. 2 = = 22 .
2 = 22 6.
1 = 2∙2 = 44 . 1 = 47 6.
. , , . . .
4
168. 6,8 10 . 2-29 1%. +U = 12 . R10 = = 520 . R10 = 510 E24.
|
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R11 Vref, R12. . Vref.max = 5.5 . I = 17 . R11 = = 35 , R12 = = = 323 . R11 2-23 0,25 36 1%, R12 5-16 0,25 330 5%.
VT1 n-p-n 315 20 0,1 0,15.
.
, ISA . 13, , . 153319, , .
5 153319
153319 [8].
6
.
153319. 14 , 153319. . 13- .
7
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2. , , , , .
3. 5 , 12 , ISA.
AD7819. 4.5, 200 . , ISA. , Fd.
, 16 . W24129A, 28- DIP , 5 . Q, , , 5311.
.
, 8- , . Z- , ISA . 8- 15335.
Q EA , EB 15331.
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8
. 2 , . 310h 1 . 001100010000b. :
= . 1 #IOW.
15331, Ȕ 15336 Ȕ 15338.
9
Q RS-, , . RS- 15332, .
Q D7 . #IOR . 15335, Ȕ 5311 Ŕ 15331.
5
, . , DA1 DA2, (1+ 2R2/R1) , (1+ 2210 /47 ) = 9,94. , D3 , (R6/R4) , (16,5 /1 ) = 16,5. 9,9416,5 = 164, 167. 30 (167164) 30 = 90 . 90 /(16730 ) = 1,8%.
, 1.
[10], , N . 8- N = 28 =256, . , , [10]. 8- δ.. = 0,2%. , ( ), : δ = δ + δ = 0,4%.
, .
, , , , , , ISA. 1,8%, .