BUF04 Datasheet, PDF (13/16 Pages) Analog Devices – Closed-Loop High Speed Buffer

* BUF04 SPICE Macro-model
7/93, Rev. A
*
JCB / PMI
*
* Copyright 1993 by Analog Devices, Inc.
*
*
* Node assignments
*
noninverting input
*
positive supply
*
negative supply
*
output
*
*
.SUBCKT BUF04 1 99 50 6
*
* INPUT STAGE
*
R1
99
8
200
R2 10
50
200
V1
99
9
4.4
D1 9
8
DX
V2 11
50
4.4
D2 10
11
DX
I1
99
5
1.8E-3
I2
4
50
1.8E-3
Q1 50
3
5
QP
Q2 99
3
4
QN
Q3 8
61
30
QN
Q4 10
7
30
QP
R3 5
61
50E3
R4 4
7
50E3
CP1 61
99
14E-15
CP2 7
50
14E-15
RFB 6
2
100
*
* INPUT ERROR SOURCES
*
IB1 99
1
0.7E-6
VOS 3
1
0.7E-6
LS1 30
2
1E-9
CS1 99
2
2.0E-12
CS2 99
1
3.0E-12
*
EREF 97
0
22 0 1
*
* TRANSCONDUCTANCE STAGE
*
R5 12
97
365E3
C3 12
97
8E-12
G1 97
12
99 8 SE-3
G2 12
97
10 50 SE-3
E3
13
97
POLY(1) 99 97 –2.5 1.1
E4
97
14
POLY(1) 97 50 –2.5 1.1
D3 12
13
DX
D4 14
12
DX
R6 12
15
200
C2 15
6
20E-12
*
BUF04
* POLE AT 200 MHz
*
R11 20
97
1E6
C7 20
97
0.759E-15
G7 97
20
12 22 1E-6
*
* POLE AT 200 MHz
*
R12 21
97
1E6
C8 21
97
0.759E-15
G8 97
21
20 22 1E-6
*
* OUTPU T STAGE
*
FSY 99
50
POLY(2) V7 V8 1.85E-3 1 1
R13 22
99
16.67E3
R14 22
50
16.67E3
R15 27
99
80
R16 27
50
80
L2
27
6
10E-9
G11 27
99
99 21 12.5E-3
G12 50
27
21 50 12.5E-3
V5
23
27
3.3
V6
27
24
3.3
D5 21
23
DX
D6 24
21
DX
G10 97
70
27 21 12.5E-3
D7 70
71
DX
D8 72
70
DX
V7
71
97
DC 0
V8
97
72
DC 0
*
* MODELS USED
*
.MODEL QN NPN(BF= 1000 IS= 1E-15)
.MODEL QP PNP(BF= 1000 IS= 1E-15)
.MODEL DX D(IS= 1E-15)
.ENDS BUF04
REV. 0
–13–