The document provides a detailed report on circuit simulation results for the photo IC part number TPS852 from Toshiba Bee Technologies Inc., covering various characteristics including light current, saturation output voltage, dark current, switching time, and ambient temperature effects. It contains multiple measurements and error analyses at different conditions with the parameterized circuits. All results reflect the performance and reliability of the device based on simulated evaluations under controlled settings.

1. Device Modeling Report
COMPONENTS: Photo IC
PART NUMBER: TPS852
MANUFACTURER: TOSHIBA
Bee Technologies Inc.
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

2. Light current characteristic ( IL – EV )
Circuit simulation result
Evaluation circuit
VCC
U1
Vcc
V1
Ev Ev OUT OUT
3Vdc
Light_source(lx) GND
V3
V2 TPS852
0Vdc
TA = 25
0Vdc 0Vac
Ls = 1
TRAN =
0 0 0
0
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

3. Circuit simulation result
Comparison graph
Simulation Result
Ev(lx) Light current IL (uA) Error (%)
Measurement Simulation
1 0.48000 0.48400 0.833
10 4.8000 4.8290 0.604
100 48.000 47.995 -0.010
1000 475.00 476.19 0.250
10000 4100.0 4095.5 -0.110
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

4. Relative IL – VCC characteristics
Circuit simulation result
1000(lx)
100(lx)
Ev = 10(lx)
Evaluation circuit
VCC
U1
Vcc
V1
Ev Ev OUT OUT
3Vdc
Light_source(lx) GND
V3
V2 TPS852
0Vdc
TA = 25
0Vdc 0Vac
Ls = 1
TRAN =
0 0 0
0
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

5. Circuit simulation result
Comparison graph
Simulation Result
Ev (lx) Relative light current @ Vcc = 7V
Measurement Simulation Error (%)
1 1.355 1.35703 0.1498
10 1.355 1.35548 0.0354
100 1.355 1.35971 0.3476
1000 1.355 1.35843 0.2531
10000 1.355 1.39498 2.9506
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

6. Saturation output voltage characteristics
Circuit simulation result
Evaluation circuit
VCC
U1
Vcc
V1
Ev Ev OUT OUT
3Vdc
Light_source(lx) GND
V3
V2 TPS852 0Vdc
100Vdc LS = {Ls} 0Vac
TA = {Ta} TRAN =
R1
0 0
150k
0
0
Simulation Result
Condition: Vcc=3V, RL=150kohm, Ev=100 lx
Measurement Simulation Error(%)
Vo 2.35 V 2.3517 V 0.07234
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

7. Dark current characteristics
Circuit simulation result
Evaluation circuit
VCC
U1
Vcc
V1
Ev Ev OUT OUT
3Vdc
Light_source(lx) GND
V3
V2 TPS852 0Vdc
0Vdc LS = {Ls} 0Vac
TA = {Ta} TRAN =
0 0
0
0
Simulation Result
Condition: Vcc=3V, Ev=0 lx
Measurement Simulation Error(%)
ILEAK 0.0017 uA 0.00173 uA 1.765
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

8. Switching time characteristics
Circuit simulation result
Luminance for saturating operation (lx)
Photo IC output voltage
Evaluation circuit
VCC
U2
Vcc
V1
Ev Ev OUT OUT
3Vdc
Light_source(lx) GND
V1 = 0 V2 TPS852 RL
V2 = 10000 LS = 1
TD = 600u TA = 25 5k
TR = 10n
TF = 10n
PW = 400u
PER = 50m 0 0 0
0
Simulation Result
Condition: Vcc=3V, RL=5kohm
Measurement Simulation Error(%)
tr 10 nsec. 11.054 nsec. 10.540
tf 295 nsec. 285.653 nsec. -3.168
ts 30 nsec. 30.030 nsec. 0.100
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

9. Switching time characteristics Reference
Photo IC output voltage
White LED V_forward
Pulse source
Note: Pulse source - microcontroller ATMEL: AT89S8252
White LED – OptoSupply: OSWT5161A
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

10. Ambient temperature Characteristics – Relative IL-Ta
Circuit simulation result
80C
60C
40C
25C
0C
Ta=-40C
Evaluation circuit
VCC
U1
Vcc
V1
Ev Ev OUT OUT
3Vdc
Light_source(lx) GND
V3
V2 TPS852 0Vdc
100Vdc LS = 1 0Vac
TA = {Ta} TRAN =
0 0
0
0
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

11. Circuit simulation result
Comparison graph
Simulation Result
Ta (C) Relative light current @ Vcc = 3V, Ev=100 lx
Measurement Simulation Error (%)
-20 0.82 0.828 0.976
0 0.90 0.906 0.667
25 1.00 1.000 0.000
40 1.05 1.043 -0.667
60 1.125 1.125 0.000
80 1.17 1.198 2.393
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

12. Output Voltage Simulation Reference
Circuit simulation result
150k
30k
RL = 5.1kohm
A light source
Fluorescent light
Evaluation circuit
PARAMETERS:
Ls = 1
RL = 5.1k
VCC
U1
Vcc
V1
Ev Ev OUT OUT
3Vdc
Light_source(lx) GND
V3
V2 TPS852 0Vdc
0Vdc LS = {Ls} 0Vac
TA = 25 TRAN =
R1
0 0
{RL}
0
0
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

13. Consumption Current Simulation Reference
Circuit simulation result
Evaluation circuit
PARAMETERS:
Ls = 1
RL = 5.1k
VCC
U1
Vcc
V1
Ev Ev OUT OUT
3Vdc
Light_source(lx) GND
V3
V2 TPS852 0Vdc
0Vdc LS = {Ls} 0Vac
TA = 25 TRAN =
R1
0 0
{RL}
0
0
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005