BU7261 Bipolar Op-Amps using SPICE

1. BU7261
Bipolar Op-Amps
VDD=+3[V], VSS=0[V]
Bee Technologies Inc.

2. Content
 Spice Net list
 BU7261 Output current
 BU7261 Output current comparison table
 BU7261 Supply current
 BU7261 Supply current comparison table
 BU7261 Power supply rejection ratio
 BU7261 Power supply rejection ratio comparison table
 BU7261 Input common-mode voltage range
 BU7261 Input common-mode voltage range comparison table
2All Rights Reserved Copyright (c) Bee Technologies Inc. 2009

3. All Rights Reserved Copyright (c) Bee Technologies Inc. 2009
3
Spice Net list
.SUBCKT BU7261 IN+ IN- VDD VSS OUT
M_N1 N5 IN- N7 N7 MbreakND L=0.5u W=40u
M_N2 N6 IN+ N7 N7 MbreakND L=0.5u W=40u
M_N3 N14 N14 VSS VSS MbreakND L=0.5u W=2.4u
M_N4 N7 N14 VSS VSS MbreakND L=0.5u W=2.4u
M_N5 N10 N11 N3 N3 MbreakND1 L=0.5u W=80u
M_N6 N12 N11 N4 N4 MbreakND1 L=0.5u W=1m
M_N7 N3 N10 N8 N8 MbreakND1 L=0.5u W=80u
M_N8 N4 N10 N9 N9 MbreakND1 L=0.5u W=80u
M_MON N15 N12 VSS VSS MbreakND2 L=0.5u W=143u
M_MOP OUT N12 N16 N16 MbreakPD L=0.5u W=300u
M_P1 N3 IN- N2 N2 MbreakPD L=0.5u W=99.8u
M_P2 N4 IN+ N2 N2 MbreakPD L=0.5u W=100.2u
M_P3 N10 N13 N5 N5 MbreakPD1 L=0.5u W=200u
M_P4 N12 N13 N6 N6 MbreakPD1 L=0.5u W=200u
M_P5 N5 N1 VDD VDD MbreakPD L=0.5u W=6u
M_P6 N6 N1 VDD VDD MbreakPD L=0.5u W=6u
M_P7 N1 N1 VDD VDD MbreakPD L=0.5u W=6u
M_P8 N2 N1 VDD VDD MbreakPD L=0.5u W=6u
R_R1 IN- VSS 1E12
R_R2 IN+ VSS 3E12
R_R3 N1 VSS 37k
R_R4 VDD N14 37k
R_R5 N8 VSS 2.0k
R_R6 N9 VSS 1.464k
C_C1 OUT N12 27p
C_C2 N3 N4 4.3p
C_C3 N6 N5 4.3p
V_V1 OUT N15 0.098
V_V2 VDD N16 0.097
V_Vb1 VDD N13 0.5
V_Vb2 N11 VSS 0.1
.model MbreakND NMOS (LEVEL=3 RS=10.000E-3 RD=10.000E-3
+ RDS=1.000E6 TOX=2.0000E-6 RG=5 RB=1.000E-3 KP=50E-6)
.model MbreakND1 NMOS (LEVEL=3 RS=10.000E-3 RD=10.000E-3
+ RDS=1E6 TOX=2.0000E-6 ETA=0.01E-6 RG=5 RB=1.0000E-3 KP=50E-6)
.model MbreakND2 NMOS (LEVEL=3 RS=10.000E-3 RD=10.000E-3
+ RDS=1.0000E6 TOX=2.0000E-5 CBD=1.5n RG=5 RB=1.0000E-3
+ KP=50E-6)
.model MbreakPD PMOS (LEVEL=3 RS=10.000E-3 RD=10.00E-3
+ RDS=150E6 TOX=2.0000E-6 RG=5 RB=1.0000E-3 KP=20E-6)
.MODEL MbreakPD1 PMOS (LEVEL=3 RS=10.000E-3 RD=10.000E-3
+ RDS=1.00E6 TOX=2.0000E-6 ETA=0.01E-6 RG=5 RB=1.0000E-3
+ KP=50E-6)
.MODEL MbreakPD2 PMOS (LEVEL=3 RS=10.000E-3 RD=10.00E-3
+ RDS=150E6 TOX=2.0000E-6 RG=5 RB=1.000E-3 KP=20E-6)
.ENDS BU7261

4. All Rights Reserved Copyright (c) Bee Technologies Inc. 2009
4
BU7261 Output Current
Simulation result
Evaluation Circuit
IOL
IOH
Ti me
0s 0. 5us 1. 0us
I ( U1: OUT)
0A
10mA
20mA
SEL>>
I ( U2: OUT)
0A
- 20mA
O U T
+
V D D
-
IN +
V S S
IN -
U 1
B U 7 2 6 1
O U T
+
V D D
-
IN +
V S S
IN -
U 2
B U 7 2 6 1
V o 1
2 . 6
000
V c m
1 . 5 V d c
V 1
0
0
V o
0 . 4
00
V D D
3 V
0
V c m 1
1 . 5 V d c
0
V D D 1
3 V
V 2
3
0 0

5. All Rights Reserved Copyright (c) Bee Technologies Inc. 2009
5
BU7261 Output current comparison table
Parameter
Symbol
(Unit)
Meas. Sim. %Error
Output source
current
IOH
(mA)
10.000 9.987 -0.130
Output sink current
IOL
(mA)
12.000 12.214 1.783

6. Ti me
0s 0. 5u s 1 . 0u s
I ( U1: VDD)
0 A
25 0u A
50 0u A
All Rights Reserved Copyright (c) Bee Technologies Inc. 2009
6
BU7261 Supply Current
Simulation result
Evaluation Circuit
O U T
+ V D D-IN +
V S S
IN -
U 1
B U 7 2 6 1
V 1
3
0 0
V D D
3 V
0
I

7. All Rights Reserved Copyright (c) Bee Technologies Inc. 2009
7
BU7261 Supply current comparison table
Parameter
Symbol
(Unit)
Meas. Sim. %Error
Supply current
IDD
(uA)
250 253.444 1.38

8. All Rights Reserved Copyright (c) Bee Technologies Inc. 2009
8
BU7261 Power supply rejection ratio
Simulation result
Evaluation Circuit
Fr e qu e n c y
1. 0 mHz 10 0mHz 1 0Hz 1 00 Hz 10 KHz 1 . 0MHz 1 00 MHz
d b ( v ( i n ) / v ( ou t ) )
0
50
10 0
15 0
20 0
O U T
+
V D D
-
IN +
V S S
IN -
U 1
B U 7 2 6 1
0
o u t
0
V D D
3 V
0
V 1
1 V a c
0 V d c
in
C 1
2 5 p F
0

9. All Rights Reserved Copyright (c) Bee Technologies Inc. 2009
9
BU7261 Power supply rejection ratio
Parameter
Symbol
(Unit)
Meas.
Sim.
(1mHz-100MHz)
%Error
Power supply rejection
ratio
PSRR
(dB)
80 49-168 -

10. All Rights Reserved Copyright (c) Bee Technologies Inc. 2009
10
BU7261 Input common-mode voltage range
Simulation result
Evaluation Circuit
V_ VI N
0V 1. 0V 2. 0 V 3. 0V
V( OUT)
0V
1. 0V
2. 0V
3. 0V
O U T
+
V D D
-
IN +
V S S
IN -
U 1
B U 7 2 6 1
V I N
0
0
O U T
0
V D D
3 V
0
R f
1 0 0 G
C f
1 0

11. All Rights Reserved Copyright (c) Bee Technologies Inc. 2009
11
BU7261 Input common-mode voltage range
Parameter
Symbol
(Unit)
Meas. (Min-
Max)
Sim.
(1mHz-100MHz)
%Error
Input common-mode
voltage range
Vicm (V) 0-3 2.4 0