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IC for Human Body Detector
Amplifier
for Pyroelectric Infrared Sensor
BD9251FV
No.11096EAT01
●Description
BD9251FV is used for the human body detection application.
Make to single-chip, easy to use then before. Power-saving in the best design.
Reduce the standby power requirement of the device used always. Don’t choose the mounting place by a space-saving.
●Features
1) Amplifier for sensor output
2) Comparator for sensor output
3) Built-in voltage regulator
4) Built-in moving detector
●Applications
Lighting, Sensor Light, Security system, WEB camera, TV, PC display, Air Conditioner, Ventilation fan
●Absolute Maximum Ratings (Ta=25℃)
Parameter Symbol Ratings Units
Supply Voltage VDD -0.3~7.0 V
1
Power Dissipation Pd 440
※
mW
Operating Temperature T
Storage Temperature T
※1. It reduces 3.5mW/℃ then Ta≧25℃. (On glass epoxy board of 70mm×70mm×1.6mm)
●Operating Conditions
Parameter Symbol
Supply Voltage VDD 2.97 5.0 6.0 V
A1P_IN Offset Voltage V
This product doesn’t design for protection radioactive rays.
-30~75 ℃
opr
-55~125 ℃
stg
Ratings
Min. Typ. Max.
A1P_IN_OFFSET
- 1.5 - V V
Units Conditions
=2.3V
DRAIN
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© 2011 ROHM Co., Ltd. All rights reserved.
1/8
2011.10 - Rev.
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BD9251FV
●Electric Characteristics (VDD=5.0V, Ta=25℃)
Parameter Symbol
Min. Typ. Max.
Limits
Units Conditions
Supply Current IDD - 300 400 uA Output no load
Technical Note
DRAIN Output Voltage V
AMP1/AMP2 Input Voltage V
2.0 2.3 - V
DRAIN
IN
0.1 - VDD-0.8 V
AMP1/AMP2 Gain AG - - 46 dB
AMP1/AMP2 Unity Gain AUG - 1 - MHz
AMP1 Input Offset Voltage V
AMP2 Output Offset Voltage V
A2_OUT Output Current (source) I
A2_OUT Output Current (sink) I
- - 10 mV
A1OFF
- 1.5 - V
A2OUT
20 30 - µA
A2OUT1
20 200 - µA
A2OUT2
D_OUT / T_OUT Output "H" Voltage VOH VDD-0.6 - VDD V IOH=-1mA
D_OUT / T_OUT Output "L" Voltage VOL 0 - 0.6 V IOL=+1mA
VDD≧2.97V,
I
≦100µA
DRAIN
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© 2011 ROHM Co., Ltd. All rights reserved.
2/8
2011.10 - Rev.
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BD9251FV
Technical Note
●Electrical characteristic curves (Reference data)
400
350
300
250
200
IDD [uA]
150
100
-30
℃
50
0
23 456 78
75
℃
25
℃
VDD[V]
Fig.1 IDD Fig.2 IDD
400
350
300
250
200
IDD [uA]
150
100
2.97V
50
0
-50 0 50 100
6V
5V
Ta[℃]
3
75
℃
-30
2
DRAIN [V]
1
0
234567
VDD[V]
25
℃
℃
Fig.3 Drain Voltage
(source 100uA)
3
6V
3
6V
0
2
DRAIN[V]
2.97V
1
5V
2
2.97V
DRAIN [V]
1
5V
-10
0uA
-20
RIPPLE REJECTION [dB]
100uA
0
-50 0 50 100
Ta [℃]
Fig.4 Drain Voltage
(source 100uA)
0
0 20 40 60 80 100 120
Isource [uA]
Fig.5 Drain Voltage
(Ta=25℃)
-30
1.E+ 01 1.E+02 1.E+ 03 1.E+04 1.E+ 05 1.E+06
fr eq uency [H z]
Fig.6 Drain Voltage PSRR (Ta=25℃)
VDD=2.97V
0
0
100000
-10
100uA
-10
100uA
-20
RIPPLE REJECTION [dB]
0uA
-30
1.E+ 01 1.E+02 1.E+ 03 1.E+04 1. E+05 1.E+ 06
Fig.7 Drain Voltage PSRR (Ta=25℃)
50
40
30
20
gain [dB]
10
0
-10
1.E+ 01 1.E+02 1.E+ 03 1.E+04 1.E+05 1. E+06 1.E+07
Fig.10 amp1/amp2 closed-loop-gain
fr eq uency [H z]
VDD=5.0V
-30
℃
25
℃
75
fr eq uency [Hz ]
℃
VDD=2.97V
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© 2011 ROHM Co., Ltd. All rights reserved.
-20
RIPPLE REJECT ION [dB]
0uA
-30
1.E+ 01 1.E+02 1.E+ 03 1.E +04 1.E+ 05 1.E+06
fr eq uency [H z]
Fig.8 Drain Voltage PSRR (Ta=25℃)
VDD=6.0V
50
40
30
-30
20
gain [dB]
10
0
-10
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
℃
25
℃
fr eq uency [Hz ]
75
℃
Fig.11 amp1/amp2 closed-loop-gain
VDD=5V
3/8
10000
1000
war m_up_ti me [us
100
2.97V
10
no load
0.00 0.01 0 .10 1.00 10.00
5V
6V
C2 l oad [uF]
Fig.9 DRAIN VOLTAGE warm_up_time
(Ta=25℃)
50
40
30
20
gain [dB]
10
0
-10
1.E+01 1.E +02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
-30
℃
25
fr eq uency [Hz]
℃
75
℃
Fig.12 amp1/amp2 closed-loop-gain
VDD=6V
2011.10 - Rev.