EL2157CS datasheet(18/20 Pages) ELANTEC

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EL2150CEL2157C

125 MHz Single Supply Clamping Op Amps

Applications Information

Contd

EL2157C Macromodel

Revision A July 1995

Output Stage

Clamp

When not being used the clamp pin pin 1

should be connected to aVsupply pin 7

i3 20 4 10mA

Connections

input

q3 7 23 20 qn

q471819qn

input

q571821qn

Vsupply

q642022qp

lll

Vsupply

q772318qn

llll

output

d1 19 20 da

lllll

clamp

d2 18 1 da

llllll

r8 21 6 2

subckt EL2157el

r9 22 6 2

r10 18 21 10k

Input Stage

r11 7 23 100k

d3 23 24 da

i1 7 10 250uA

d4 24 4 da

i2 7 11 250uA

d5 23 18 da

r1 10 11 4k

q1 12210qp

Power Supply Current

q2 13 3 11 qpa

r2 12 4 100

ips 7 4 32mA

r3 13 4 100

Models

Second Stage

Compensation

model qn npn(ise800e-18 bfe150 tfe002nS)

gm 15 4 13 12 46m

model qpa pnp(ise810e-18 bfe50 tfe002nS)

r4 15 4 15Meg

model qp pnp(ise800e-18 bfe54 tfe002nS)

c1 15 4 036pF

model da d(tte0nS)

ends

Poles

e1 17 4 15 4 10

r6 17 25 400

c3 25 4 1pF

r7 25 18 500

c4 18 4 1pF

EL2157CS Datasheet(PDF) 18 Page - Elantec Semiconductor

EL2157CS Datasheet(HTML) 18 Page - Elantec Semiconductor

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