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Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
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My slides at Nordic Testing Days 6.6.2024
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https://alandix.com/academic/papers/synergy2024-epistemic/
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1. Device Modeling Report
COMPONENTS: OPERATIONAL AMPLIFIER
PART NUMBER: uPC4091C
MANUFACTURER: NEC ELECTRONICS
REMARK TYPE: (OPAMP)
Bee Technologies Inc.
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004
2. Spice Model
U1
1 8
OFFSET NULL NC
2 7
II V+
3 6
IN OUT
4 5
V- OFFSET NULL
UPC4091
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004
3. Output Voltage Swing, +Vout and –Vout
Evaluation circuit
V+
15Vdc
U5
1 8 0
OFFSET NULL NC
2 7
II V+ V6
Vin
VOFF = 0 3 6
IN OUT Vout
VAMPL = 0
FREQ = 0 4 5 0 Rload
AC = 0 V- OFFSET NULL
DC = 0 2k
Vi UPC4091
VOFF = 0 V-
0
VAMPL = 0
FREQ = 0 0
AC = 0 -15Vdc
DC = 0
0 0
The output voltage change of Opamp(open loop) when input DC voltage
(Vin -Vi) is changed with the evaluation circuit is simulated
Simulation result
These simulation results are compared with +Vout
Output Voltage Swing Data sheet Simulation %Error
+Vout(V) +13.5 +13.499 0.007407407
-Vout(V) -12.8 -12.799 0.0078125
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004
4. Input Offset Voltage
Evaluation circuit
V+
15Vdc
U5
1 8 0
OFFSET NULL NC
2 7
II V+
Vin
VOFF = 0 3 6
IN OUT Vout
VAMPL = 0
FREQ = 0 4 5
AC = 0 V- OFFSET NULL
DC = 0 Vi
V- UPC4091
0 VOFF = 0
VAMPL = 0
FREQ = 0
AC = 0 -15Vdc
DC = 0
0 0
Simulation result
Measurement Simulation Error
Vos 2.5 mV 2.498896 mV 1.732 %
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004
5. Slew Rate, +SR, -SR
Evaluation circuit
V+
15Vdc
U5
1 8 0
OFFSET NULL NC
2 7
II V+
V1 = -14 V1
V2 = 14 3 6
IN OUT Vout
TD = 0
TR = 10n 4 5 Rload
TF = 10n V- OFFSET NULL
PW = 5u 2k
V- UPC4091
PER = 500u
0
V2 -15Vdc 0
-2.498896m
0
0
The output voltage change versus time (slope) of op-amp when input electric
step voltage.
Simulation result
Output voltage change 15V in 1 us (If no good can change C2 of Spice Model
Editor)
Data sheet Simulation %Error
Slew Rate(v/us)
15 15.072 0.48
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004
6. Input current Ib, Ibos
Evaluation circuit
V+
15Vdc
U5
1 8 0
OFFSET NULL NC
2 7
II V+
Vin
VOFF = -2.498896m 3 6
IN OUT Vout
VAMPL = 0
FREQ = 0 4 5 Rload
AC = 0 V- OFFSET NULL
DC = 0 2k
Vi UPC4091
VOFF = 0 V-
0
VAMPL = 0
FREQ = 0
AC = 0 -15Vdc 0
DC = 0
0 0
The input offset current when supply voltage to op-amp
Simulation result
I(Vin) =37.782pA, I(Vi) =62.777pA :Ib =( I(Vin)+ I(Vi))/2=,Ibos =24.988p
Data sheet Simulation %Error
Ib(pA) 50 50.279 0.558
Ibos(pA) 25 24.988 0.048
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004
7. Open Loop Voltage Gain vs. Frequency , Av-dc, f-0dB
Evaluation circuit
V+
15Vdc
U5
1 8 0
OFFSET NULL NC
2 7
II V+
Vin
VOFF = 0 3 6
IN OUT Vout
VAMPL = 0
FREQ = 0 4 5 Rload
AC = 1m V- OFFSET NULL
DC = -2.4988967m 2k
Vi UPC4091
VOFF = 0 V-
0
VAMPL = 0
FREQ = 0
AC = 0 -15Vdc 0
DC = 0
0 0
The open loop voltage gain of op-amp when supply AC input voltage 4MHz
frequecy
Simulation result
f-0dB ~ 4.385MHz, Av-dc ~ 106.21dB
Data sheet Simulation %Error
f-0dB(MHz) 4 4.385 9.625
Av-dc 200000 204408 2.204
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004
8. Output Short Circuit Current - Ios
Evaluation circuit
V+
15Vdc
U5
1 8 0
OFFSET NULL NC
2 7
II V+ V1
Vin
VOFF = -2.498896m 3 6
IN OUT Vout
VAMPL = 0
FREQ = 0 4 5 0Vdc Rload
AC = 0 V- OFFSET NULL
DC = 0 1n
Vi UPC4091
VOFF = 0 V-
0
VAMPL = 0
FREQ = 0
AC = 0 -15Vdc 0
DC = 0
0 0
Simulation result
Short Circuit current
Data sheet Simulation %Error
Short Circuit Current
25mA 25.392mA 1.568
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004
9. Common-Mode Rejection Voltage gain
Evaluation circuit
V+
15Vdc
U5
1 8 0
Vin OFFSET NULL NC
2 7
II V+
Vof f 0Vdc 3 6
IN OUT Vout
-2.498896m
4 5
V- OFFSET NULL
Vi
V- UPC4091
V1 0Vdc
VOFF = 0 -15Vdc
VAMPL = 0.5
FREQ = 1 0
AC = 0
DC = 0
0
Simulation result
Common mode gain=2.071/1
Common Mode Reject Ratio=204408/2.072=98652
Data sheet Simulation %Error
CMRR
100000 98652 1.348
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004