OP285GSZ datasheet(12/16 Pages) AD

12 / 16 page

REV. A

OP285

–12–

OP285 SPICE Model

* Node assignments

noninverting input

inverting input

positive supply

negative supply

output

.SUBCKT OP285

1 2

99 50

* INPUT STAGE & POLE AT 100 MHZ

5 51

2.188

6 51

2.188

CIN 1 2

1.5E-12

5 6

364E-12

97 4

100E-3

IOS 1 2

1E-9

EOS 9 3

POLY(1) 26 28 35E-6 1

5 2 7 QX

6 9 8 QX

7 4

1.672

8 4

1.672

2 36

1 36

3 1

100 1

GN1 0 2

13 0 1

GN20 1

16 0 1

EREF 98 0

28 0 1

97 0

99 0 l

510

50 0 1

* VOLTAGE NOISE SOURCE

DN1 35 10

DEN

DN2 10 11

DEN

VN1 35 0

DC 2

VN2 0 11

DC 2

* CURRENT NOISE SOURCE

DN3 12 13

DIN

DN4 13 14

DIN

VN3 12 0

DC 2

VN4 0 14

DC 2

CN1 13 0

7.53E-3

* CURRENT NOISE SOURCE

DN5 15 16

DIN

DN6 16 17

DIN

VN5 15 0

DC 2

VN6 0 17

DC2

CN2 16 0

7.53E-3

* GAIN STAGE & DOMINANT POLE AT 32 HZ *

R7 18 98

1.09E6

C3 18 98

4.55E-9

G1 98 18

5 6 4.57E-1

V2 97 19

1.4

V3 20 51

1.4

D3 18 19

D4 20 18

* POLE/ZERO PAIR AT 1.5MHz/2.7MHz

R8 21 98

1E3

R9 21 22

1.25E3

C4 22 98

47.2E-12

G2 98 21

18 28 1E-3

* POLE AT 100 MHZ

R10 23 98

C5 23 98

1.59E-9

G3 98 23

21 28 1

* POLE AT 100 MHZ

R11 24 98

C6 24 98

1.59E-9

G4 98 24

23 28 1

* COMMON-MODE GAIN NETWORK WITH ZERO AT

1 kHZ

R12 25 26

1E6

C7 25 26

1.59E-12

R13 26 98

E2 25 98

POLY(2) 1 98 2 98 0 2.506 2.506

* POLE AT 100 MHZ

R14 27 98

C8 27 98

1.59E-9

G5 98 27

24 28 1

* OUTPUT STAGE

Rl5 28 99

100E3

R16 28 50

100E3

C9 28 50

1 E-6

ISY 99 50

1.85E-3

R17 29 99

100

R18 29 50

100

L2 29 34

1E-9

G6 32 50

27 29 10E-3

G7 33 50

29 27 10E-3

G8 29 99

99 27 10E-3

G9 50 29

27 50 10E-3

V4 30 29

1.3

V5 29 31

3.8

F1 29 0

V4 1

F2 0 29

V5 1

D5 27 30

D6 31 27

D7 99 32

D8 99 33

D9 50 32

D10 50 33

* MODELS USED

.MODEL QX PNP(BF = 5E5)

.MODEL DX

D(IS = lE-12)

.MODEL DY

D(IS = lE-15 BV = 50)

.MODEL DZ

D(IS = lE-15 BV = 7.0)

.MODEL DEN D(IS = lE-12 RS = 4.35K KF = 1.95E-15

AF = l) .MODEL DIN D(IS = lE-12 RS = 77.3E-6

KF = 3.38E-15 AF = 1) .ENDS OP-285

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