LT1251CS datasheet(21/24 Pages) LINER

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LT1251/LT1256

ACRO ODEL

*full scale amp

IBFS

–300NA

RIFS

100MEG

C12

1PF

R12

12A

1600

CBWFS

12A

10PF

EFS

12B

12A

1.0

VOSFS

12B

–5MV

C11

1PF

RFS

C10

1PF

*generating K

*** the next two lines are for the LT1251

EK K 0 TABLE {I(VOSC)/I(VOSFS)}=

(–100,0)

(0.04,0)

(0.1,0.11)

(0.9,0.907) (0.95,1.0)

(100,1.0)

*** the next two lines are for the LT1256

*EK K 0 TABLE {I(VOSC)/I(VOSFS)}= (–100,0)

(0,0)

(0.2,0.21)

(0.9,0.9)

(1.0,1.0)

(100,1.0)

RDUMMY

1MEG

RNOISE1

200K

RNOISE2

200K

*generates 40.7nV/rtHz

*null circuit

GNULL

VALUE={I(VOSFS)}

RN1

200

VNULL

0.0V

RN2

400

1PF

*output stage

+VALUE={1.8MEG*(I(VOS1)*V(K)+I(VOS2)*(1–V(K))–I(VNULL)+0.10UA+0.0007*V(EN))}

1.8MEG

3.4PF

1.0

0.0V

*output swing and current limit

VDP

–1.4V

VDN

1.4V

.MODEL

GCL

TABLE {I(V8)}=(–1,–1)(–0.04,0)(0.04,0)(1,1)

*supply current

VALUE={1MA+24*I(VOSFS)+(V(7)–V(9))/20K}

GCC

TABLE {I(V8)}=(–1,0)(0,0)(1,1)

GEE

TABLE {I(V8)}=(–1,–1)(0,0)(1,0)

.ENDS LT1251

LT1251CS Datasheet(PDF) 21 Page - Linear Technology

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