Datasheet

 
  
    
SLOS197A − AUGUST1997 − REVISED MARCH 2001
26
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
macromodel information
Macromodel information provided was derived using Microsim Parts, the model generation software used
with Microsim PSpice. The Boyle macromodel (see Note 6) and subcircuit in Figure 56 are generated using
the TLV2721 typical electrical and operating characteristics at T
A
= 25°C. Using this information, output
simulations of the following key parameters can be generated to a tolerance of 20% (in most cases):
D Maximum positive output voltage swing
D Maximum negative output voltage swing
D Slew rate
D Quiescent power dissipation
D Input bias current
D Open-loop voltage amplification
D Unity-gain frequency
D Common-mode rejection ratio
D Phase margin
D DC output resistance
D AC output resistance
D Short-circuit output current limit
NOTE 6: G. R. Boyle, B. M. Cohn, D. O. Pederson, and J. E. Solomon, “Macromodeling of Integrated Circuit Operational Amplifiers”, IEEE Journal
of Solid-State Circuits, SC-9, 353 (1974).
OUT
+
−
+
−
+
−
+
−
+
−
+
−
+
−
+
−
+−
.SUBCKT TLV2721 1 2 3 4 5
C1 11 12 12.53E−12
C2 6 7 50.00E−12
DC 5 53 DX
DE 54 5 DX
DLP 90 91 DX
DLN 92 90 DX
DP 4 3 DX
EGND 99 0 POLY (2) (3,0) (4,0) 0 .5 .5
FB 7 99 POLY (5) VB VC VE VLP
+ VLN 0 893.6E3 −90E3 90E3 90E3 −90E3
GA 6 0 11 12 94.25E−6
GCM 0 6 10 99 9.300E−9
ISS 3 10 DC 9.000E−6
HLIM 90 0 VLIM 1K
J1 11 2 10 JX
J2 12 1 10 JX
R2 6 9 100.0E3
RD1 60 11 10.61E3
RD2 60 12 10.61E3
R01 8 5 35
R02 7 99 35
RP 3 4 49.50E3
RSS 10 99 22.22E6
VAD 60 4 −.5
VB 9 0 DC 0
VC 3 53 DC .666
VE 54 4 DC .666
VLIM 7 8 DC 0
VLP 91 0 DC 3.4
VLN 0 92 DC 11.4
.MODEL DX D (IS=800.0E−18)
.MODEL JX PJF (IS=500.0E−15 BETA=1.527E−3
+ VTO=−.001)
.ENDS
V
DD+
RP
IN −
2
IN+
1
V
DD−
VAD
RD1
11
J1 J2
10
RSS ISS
3
12
RD2
60
VE
54
DE
DP
VC
DC
4
C1
53
R2
6
9
EGND
VB
FB
C2
GCM
GA
VLIM
8
5
RO1
RO2
HLIM
90
DLP
91
DLN
92
VLNVLP
99
7
Figure 56. Boyle Macromodel and Subcircuit
PSpice and Parts are trademark of MicroSim Corporation.
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