ROHM BD9251FV Technical data

A

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.

BD9251FV

A

●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.

BD9251FV

A

]

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.