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Новости строительства

827:

827 0688759652

:

- . , , " " " ", .

2963-2 (RUS) . :

2963-2

II ... 372:

!

.

.

, , AD62x AD8225.

[1], , , . , , , , , . ݸ . " " . [2], ׸ , , . : ; , ; ޸ . "" : , , , , , . , -, , . -, , "" . , . AD620 Analog Devices [3], [4] .

, , , , .

IK = Ih21 + I0(1 + h21) = (1)
= (I + I0)h21 + I0 ~         (2)
~ (I + I0)h21,                        (3)

(1) I ( ), I0, . , , (1), h21 - . (2), (1), , I I0, , , , h21. , h21 , I0, . I0 << IK, IK (3).

I = (I + I0)(1 + h21) ~ (I + I0)h21

I I I ( h21 >> 1 I0 << IK).

, IK I, h21 I0, , (1) (3)

I = I/h21 I0(1 + 1/h21) ~ (4)
~ IK/h21 I0                             (5)

(IK = const) , I, , , , (4) (5), IK/h21 -I0. , I0, , I0 . , I® IK/h21 , h21 , I0 > 0, I® -I0 , h21 I0 .

. 1 , IK ~ const. ݸ , , I "-" DU [1]. DI (4), I. = 0. , ޸ , I- ® IK/h21- I+ ® -I0+ ( ), h21- - , I0+ . , h21 , I0 "" , IK = I0. , IK, I0, Ը ޸ IK. Ը .

1. () ( ) - ()

     ()    (   ) -    ().

ĸ BC807-40W (pnp) BC817-40W (npn) Infineon Technologies [5]. h21 - 250630, I0 0,1 +25ºC; I0 50 - +150ºC. h21 IK = 100 , [5] ( -50, +25 +100ºC) h21 IK. -50 +150ºC. ĸ , ޸ , IK = 1 I- < +10 I+ = -50 . ( ) o IK.

(4) IK > const , , . ( ) , θ ޸ ( , ) . . (R . 1). , , , ( ). . .

. 1 "-":

IK = IS UN; (6)
U = IC + UH, (7)

S = 1 + R/R, N =1/R, C = SRK + R H = NRK - , R, R RK - , . R R, IK U. I U - "-". , , U [1].

Analog Devices

() , . , , ., . ( , AD62x Analog Devices) : - , ; ; ( 0 ); ; . , , , 0 , , , . , 0 , ָ , .

Ҹ , ĸ . 2,. - Ҹ, - . ()

U = U1 U2, (8)

U1 U2 - () () . , . , , ( ), , (8), . . , , AD620, ( ) 90130 - , 1 1000.

(. 2):

K = U/U = [1 + (R1 + R2)/R]R5/R3 (9)

R5/R3 = R6/R4. R1 = R2 R3 = R5 (9) : K = 1 + 2R1/R. (. 2) :

K = U/U = 1 + (R1 + R4)/R + R4/R3

R1/R4 = R2/R3. R1 = R4, R2 = R3:

K = 1 + 2R1/R + R4/R3.

2. Ҹ () ()

    Ҹ ()   ()  .

AD620 . 2. Ÿ, AD620, ݸ . 3, T1 T2 ( ) I1', I1', I1', I2', I2' I2', . , , . 3. , R, ( ).

AD620 ( T1 T2 R) ( A1 A2) - , . 1. (. 1) [9] "Current Feedback", [10]. , (9), AD620. AD620 , . , . - , "" ( T1 T2) "" R1 R2, . 3.

3. ݸ AD620

ݸ      AD620.

"" . ( ), . , - , ( "" ) , , . . 4 , ޸ . 4- - h21 IK I, . 4 - . I , (A1 A2 . 3) . . 4 h21 .

4. h21 I'

         h21  I'.

. 4 IK IK = 10 . , (4), h21 = 100 I0 > 0 0,1 , I = IK + I = 10,1 . - I 10 , , 0,1 , ޸, . 4, , , A1 A2. I, 0,1 . - "" , "" , [3]. , R . , , "" R "", . , θ A1 (A2), , E1 (E2), . 3. ( , ) "-", , .

. 4 h21 = 200 ( , , ). , IK = 10 ( , , I0 > 0) I = 0,05 , , I, θ R. , R, E = 50 . . 4 - h21 = 50, 0,2 . 0,1 , . 4, R ( , ). E = -100 .

. 4, . 4, 11 , , . 4, 10,1 . , 0,9 , , θ A1 (A2). Ҹ 10 , - E1 (E2), - 50 -100 . . 4- I0 . , , , h21. , I0, , (4), .

, R (R1, R2), . 4 (3), . "" "" , .

[7], Analog Devices AMP0x (AMP01/2/3/4), AD52x (AD522/4/6), AD62x (AD620//9) AD8200 AD8225. AD620, , . 2. , , AD621/2/3/4/5. AD627 , ĸ . 2. AD628, AD8200 AD8225 . AD628/9 AD8200 .

AD8225 , AD8225 . 2 3. , R, , R1 R2 . , "" A1 A2 , , AD8225 . I1' (I2') I1' (I2'). AD8225 A3 .

AD620/1/2/7 AD8225 . , , , : (I), (I) (U), ޸ AD620/1/7 - , AD622 AD8225 - +25ºC, . [8] AD620/1/7 +25ºC , . (I) - (4). - , ĸ . , U , I - ޸ R, : U + IR, R - . I, I U [1].

A B () - -40 +85ºC, AD620/1 S -55 +125ºC. A, B S, , . , AD620AR AD620SQ/883 R Q - SOIC Cerdip. , 883 - MIL-STD-883.

Analog Devices [3,68], - VD MAIS (www.vdmais.kiev.ua; info@vdmais.kiev.ua), Analog Devices .

. Analog Devices

AD620x AD621x AD622A AD627x AD8225A
A B S A B S A B
110000 10; 100 1 1000 51000 5
(-3 ), :
K = 1
K = 5
K = 10
K = 100
K = 1000

1000

800
120
12



800
200

1000

800
120
12


80

3
0,4


900


./., ppm:
K = 1100
K = 11000
K = 5
K = 10
K = 100

10/95
10/40






2/10
2/10

10/
10/





10/100

20/100



2/10 (±ppm)

./., /V:
e
e
V[e² + (e/K)²]
, i,., /V


9/13
72/100

100




13/17*
100


12/
72/

100


38/
177/

50




45/
50
,
,
,
2,5
1,5
185
1,5
0,75
85
4
2,0
225
2,5
1,5
400*
1,5
75
215
4
2,0
500*
5 (25ºC), (3 /ºC)
2,5 (25ºC), (2 /ºC)
125 (25ºC), (1 /ºC)
15
5
445
15
5
215
1,2 (25ºC), (3 /ºC)
0,5 (25ºC), (1,5 /ºC)
375 (25ºC), (2 /ºC)
, ºC -40..
+85
-56.
+125
-40
+85
-55
+125
-40+85 -40+85 -40+85

  1. .. ޸ . : i, 1977.
  2. .. / . . . .. . .: , 1957.
  3. Kitchin C., Counts L., A Designers Guide to Instrumentation Amplifiers. Analog Devices, 2000.
  4. . // Chip News. 2002. 6. . 5059.
  5. Infineon Technologies Data Sheets: BC807W, BC808W (Nov. 29, 2001); BC817W, BC818W (Oct. 20, 1999).
  6. Kester W., Bryant J., Jung W., Amplifiers for Signal Conditioning // Practical Design Techniques for Sensor Signal Conditioning. Analog Devices, 1999.
  7. Amplifiers and Linear: Instrumentation Amplifiers. Analog Devices (www.analog.com).
  8. Analog Devices Data Sheets: AD620 (Rev. E, 1999); AD621 (Rev. B, 2001); AD622 (Rev. C, 1999); AD623 (Rev. C, 1999); AD624 (Rev. C, 2001); AD625 (Rev. D, 2000); AD626 (Rev. C, 1999); AD627 (Rev. B, 2001); AD628 (Rev. 0, 2002); AD629 (Rev. A, 2000); AD8200 (Rev. A, 2002); AD8225 (Rev. 0, 2002).
  9. / . .. , .. . : i, 1981. . 252.
  10. . Current Feedback // . 2000. 4.





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