BD9251FV-E2

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 Power Dissipation Pd 440※1 mW Operating Temperature Topr -30～75 ℃ Storage Temperature Tstg -55～125 ℃ ※1. It reduces 3.5mW/℃ then Ta≧25℃. (On glass epoxy board of 70mm×70mm×1.6mm) ●Operating Conditions Parameter Supply Voltage A1P_IN Offset Voltage Symbol Ratings Units Min. Typ. Max. VDD 2.97 5.0 6.0 V VA1P_IN_OFFSET - 1.5 - V Conditions VDRAIN=2.3V This product doesn’t design for protection radioactive rays. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 1/8 2011.10 - Rev.A Technical Note BD9251FV ●Electric Characteristics (VDD=5.0V, Ta=25℃) Parameter Symbol Limits Units Conditions Min. Typ. Max. IDD - 300 400 uA Output no load VDRAIN 2.0 2.3 - V VDD≧2.97V, IDRAIN≦100µA AMP1/AMP2 Input Voltage VIN 0.1 - VDD-0.8 V AMP1/AMP2 Gain AG - - 46 dB AMP1/AMP2 Unity Gain AUG - 1 - MHz AMP1 Input Offset Voltage VA1OFF - - 10 mV AMP2 Output Offset Voltage VA2OUT - 1.5 - V A2_OUT Output Current (source) IA2OUT1 20 30 - µA A2_OUT Output Current (sink) IA2OUT2 20 200 - µA 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 Supply Current DRAIN Output Voltage www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 2/8 2011.10 - Rev.A Technical Note BD9251FV ●Electrical characteristic curves (Reference data) 400 350 300 250 250 IDD [uA] 300 25℃ 200 -30℃ 150 6V 5V 2.97V 150 100 50 50 2 3 4 5 6 7 -50 8 0 VDD[V] Fig.1 IDD Fig.2 IDD 2 6 7 Fig.3 Drain Voltage (source 100uA) RIPPLE REJECTION [dB] 2.97V DRAIN[V] DRAIN[V] 1 5V 1 0 0 50 0 20 40 60 80 Isource [uA] 100 120 Fig.5 Drain Voltage (Ta=25℃) Fig.4 Drain Voltage (source 100uA) 0 0uA -10 Drain Voltage PSRR (Ta=25℃) VDD=5.0V 100uA -20 1000 5V 100 0uA Fig.8 Drain Voltage PSRR (Ta=25℃) VDD=6.0V 10 no load 0.00 50 50 40 40 40 30 20 25℃ 20 25℃ 10 10 -10 1.E+01 1.E+021.E+03 1.E+041.E+05 1.E+061.E+07 frequency [Hz] Fig.10 amp1/amp2 closed-loop-gain VDD=2.97V www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 0.10 C2 load [uF] 1.00 10.00 -30℃ 20 10 75℃ 0 0.01 30 -30℃ gain [dB] gain [dB] -30℃ 6V 2.97V Fig.9 DRAIN VOLTAGE warm_up_time (Ta=25℃) 50 30 Drain Voltage PSRR (Ta=25℃) VDD=2.97V 10000 -30 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 frequency [Hz] -30 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 frequency [Hz] 0uA 100000 warm_up_time [us] -20 RIPPLE REJECTION [dB] 100uA 100uA -20 Fig.6 0 -10 -10 -30 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 frequency [Hz] 0 100 Ta [℃] Fig.7 4 5 VDD[V] 0 2 5V 2.97V -50 3 6V 2 RIPPLE REJECTION [dB] 0 100 3 6V gain [dB] 50 Ta[℃] 3 25℃ 1 0 0 -30℃ 2 200 100 75℃ DRAIN [V] 350 IDD [uA] 3 400 75℃ 75℃ 0 0 -10 -10 25℃ 75℃ 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 frequency [Hz] frequency [Hz] Fig.11 amp1/amp2 closed-loop-gain VDD=5V Fig.12 amp1/amp2 closed-loop-gain VDD=6V 3/8 2011.10 - Rev.A Technical Note BD9251FV ●Electrical characteristic curves (Reference data) – Continued 7 7 6 6 5 4 -30℃ 5 5V 4 3 2.97V 3 2 2 1 1 1 0 2 3 4 5 6 7 0 50 100 2 Fig.14 AMP2 Output High Voltage (source 20uA) 6 6 5 5 5 3 D_OUT [V] 6 D_OUT [V] 7 4 4 3 6V 5V 75℃ 25℃ -30℃ 0 50 3 4 Ta [℃] 5 6 7 VDD [V] 6 6 5 5 T_OUT [V] 7 3 2 3 2 3 4 5 6 7 VDD [V] Fig.17 D_OUT Output Low Voltage (sink 1mA) 7 4 75℃ 0 2 100 Fig.16 AMP2 Output Low Voltage (source 20uA) 25℃ 4 1 0 -50 7 2 1 0 6 -30℃ 2 2 5 Fig.15 AMP2 Output Low Voltage (sink 20uA) 7 2.97V 4 VDD [V] 7 1 3 Ta [℃] Fig.13 AMP2 Output High Voltage (source 20uA) 75℃ 25℃ -30℃ 0 -50 VDD [V] A2_OUT [V] 4 2 0 T_OUT [V] A2_OUT [V] A2_OUT [V] 75℃ 3 6 6V 25℃ 5 A2_OUT [V] 7 Fig.18 D_OUT Output High Voltage (source 1mA) 25℃ 4 75℃ -30℃ 3 2 1 75℃ 25℃ -30℃ 1 0 2 3 4 5 6 7 VDD [V] Fig.19 T_OUT Output Low Voltage (sink 1mA) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 0 2 3 4 5 6 7 VDD [V] Fig.20 T_OUT Output High Voltage (source 1mA) 4/8 2011.10 - Rev.A Technical Note BD9251FV ●Block Diagram/Application C1 C1 VDDVDD DRAIN DRAIN Voltage Regulator C2 + AMP1 - C3 AMP2 A1_OUT A2P_DI A2N_IN R2 C4 R1 C6 R3 D_OUT Ｓ - REF_OUT COMP_IN+ A2_OUT GND T_OUT Ｒ R5 R4 C5 T_OU + 33kΩ 47kΩ A1N_IN - D_OU Ｓ + 7.5kΩ 10kΩ G + 7.5kΩ + 650kΩ AMP1 47kΩ + S AMP2 - 7.5kΩ 33kΩ G + 33kΩ 10kΩ D A1P_IN 350kΩ C3 7.5kΩ S 33kΩ D A1P_IN 650kΩ Pyroelectric sensor 350kΩ Pyroelectric sensor C2 BD9251FV BD9251FV Voltage Regulator C7 C8 ※ Please decide the constant after it confirms it enough examing the characteristic and the condition of the pyroelectric sensor. A1N_IN A1_OUT A2P_DI A2N_IN REF_OUT A2_OUT COMP_IN GND R5 R4 R2 C4 R1 C5 C6 R3 C8 C7 ※ Please decide the constant after it confirms it enough examing the characteristic and the condition of the pyroelectric sensor. Example of circuit constant： C1=C2=C3 : 1uF C4=C6 : 6.9uF C5=C7 : 15nF C8 : 10uF R1=R3 R2=R4 R5 : 47kΩ : 4.7MΩ : 220kΩ ●PIN Description PIN No. PIN Name 1 GND 2 NC 3 DRAIN Power supply for pyroelectric infrared sensor 4 A1P_IN Sensor input 5 A1N_IN Amp1 n-input 6 A1_OUT Amp1 output 7 A2P_DI Amp2 diode output 8 A2N_IN Amp2 n-input 9 A2_OUT Amp2 output, Analog output 10 REF_OUT Reference voltage (1/2VDD) output 11 COMP_IN Comparator input 12 D_OUT Comparator output 13 T_OUT Moving detection output 14 VDD www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. Function Remarks Ground NC Power supply 5/8 2011.10 - Rev.A Technical Note BD9251FV ●Timing chart ( When using dual type pyro sensor ) Left Right Left Right 1 →2 Pyro sensor 1 ←2 Pyro sensor Sensor Part Time axis Time axis A1P_IN (Pyro sensor output) A1P_IN Pyro sensor output) VREF_H VREF_H A2_OUT (Analog output) A2_OUT (Analog output) VREF_L VREF_L VREF_H side Comparator output VREF_H side Comparator output VREF_L side Comparator output VREF_L side Comparator output D_OUT D_OUT T_OUT Sensor Part L H T_OUT H L ※When using dual type pyro sensor , it’s possible to detect the direction of movement by checking the switch of T_out signal at D_out=H. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 6/8 2011.10 - Rev.A Technical Note BD9251FV ●Notes for use (1) Absolute maximum ratings Use of the IC in excess of absolute maximum ratings such as the applied voltage or operating temperature range may result in IC damage. Assumptions should not be made regarding the state of the IC (short mode or open mode) when such damage is suffered. A physical safety measure such as a fuse should be implemented when use of the IC in a special mode where the absolute maximum ratings may be exceeded is anticipated. (2) GND potential Ensure a minimum GND pin potential in all operating conditions. (3) Short circuit mode between terminals and wrong mounting In order to mount the IC on a set PCB, pay thorough attention to the direction and offset of the ICs. Erroneous mounting can destroy the IC. Furthermore, if a short circuit occurs due to foreign matters entering between terminals or between the terminal and the power supply or the GND terminal, the IC can destroy. (4) Actions in strong magnetic field Use caution when using the IC in the presence of a strong magnetic field as doing so may cause the IC to malfunction. (5) Mutual impedance Use short and wide wiring tracks for the power supply and ground to keep the mutual impedance as small as possible .Use a capacitor to keep ripple to a minimum. (6) About warm-up time Operation depends on a power-supply voltage and an external constant for time until stabilizing. Please confirm warm-up time enough when you use it. (7) PCB design considerations To reduce the noise from OUTPUT to INPUT , COMP_IN(11pin) and D_OUT(12pin) and T_OUT(13pin) lines away from Pyro Sensor and A1P_IN(4pin). www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 7/8 2011.10 - Rev.A Technical Note BD9251FV ●Ordering part number B D 9 Part No. 2 5 1 F Part No. V - Package FV: SSOP-B14 E 2 Packaging and forming specification E2: Embossed tape and reel SSOP-B14 5.0 ± 0.2 8 0.3Min. 4.4 ± 0.2 6.4 ± 0.3 14 1 Tape Embossed carrier tape Quantity 2500pcs Direction of feed E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) 7 0.10 1.15 ± 0.1 0.15 ± 0.1 0.65 0.1 0.22 ± 0.1 1pin Reel (Unit : mm) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 8/8 Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. 2011.10 - Rev.A Datasheet Notice Precaution on using ROHM Products 1. Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment, OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). 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