BD9251FV_11

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 Supply Voltage Power Dissipation Operating Temperature Storage Temperature Symbol VDD Pd Topr Tstg Ratings -0.3～7.0 440※1 -30～75 -55～125 Units V mW ℃ ℃ ※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 VDD VA1P_IN_OFFSET Ratings Min. 2.97 Typ. 5.0 1.5 Max. 6.0 Units V V VDRAIN=2.3V Conditions 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 BD9251FV ●Electric Characteristics (VDD=5.0V, Ta=25℃) Parameter Supply Current DRAIN Output Voltage AMP1/AMP2 Input Voltage AMP1/AMP2 Gain AMP1/AMP2 Unity Gain AMP1 Input Offset Voltage AMP2 Output Offset Voltage A2_OUT Output Current (source) A2_OUT Output Current (sink) D_OUT / T_OUT Output "H" Voltage D_OUT / T_OUT Output "L" Voltage Symbol IDD VDRAIN VIN AG AUG VA1OFF VA2OUT IA2OUT1 IA2OUT2 VOH VOL Limits Min. 2.0 0.1 20 20 VDD-0.6 0 Typ. 300 2.3 1 1.5 30 200 Max. 400 VDD-0.8 46 10 VDD 0.6 Units uA V V dB MHz mV V µA µA V V IOH=-1mA IOL=+1mA Technical Note Conditions Output no load VDD≧2.97V, IDRAIN≦100µA www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 2/8 2011.10 - Rev.A BD9251FV ●Electrical characteristic curves (Reference data) 400 350 300 IDD [uA] 75℃ Technical Note 400 350 300 DRAIN [V] 3 6V 75℃ IDD [uA] 250 200 150 100 50 0 2 3 4 5 VDD[V] 6 7 8 -30℃ 25℃ 250 200 150 100 50 0 -50 0 Ta[℃] 50 100 2.97V 5V 2 25℃ -30℃ 1 0 2 3 4 5 VDD[V] 6 7 Fig.1 IDD Fig.2 IDD Fig.3 Drain Voltage (source 100uA) 0 3 6V 3 6V RIPPLE REJECTION [dB] 2 DRAIN[V] 2.97V 5V DRAIN[V] 2 2.97V 5V -10 100uA 1 1 -20 0uA 0 -50 0 Ta [℃] 50 100 0 0 20 40 60 80 Isource [uA] 100 120 -30 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 frequency [Hz] Fig.4 Drain Voltage (source 100uA) 0 Fig.5 Drain Voltage (Ta=25℃) 0 Fig.6 Drain Voltage PSRR (Ta=25℃) VDD=2.97V 100000 RIPPLE REJECTION [dB] RIPPLE REJECTION [dB] -10 100uA -10 100uA warm_up_time [us] 10000 1000 5V 6V -20 0uA -20 0uA - 30 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 frequency [Hz] 100 2.97V - 30 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 frequency [Hz] 10 no load 0.00 0.01 0.10 C2 load [uF] 1.00 10.00 Fig.7 Drain Voltage PSRR (Ta=25℃) VDD=5.0V Fig.8 Drain Voltage PSRR (Ta=25℃) VDD=6.0V 50 40 30 gain [dB] 20 25℃ 10 75℃ 0 -10 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Fig.9 DRAIN VOLTAGE warm_up_time (Ta=25℃) 50 40 30 gain [dB] 50 40 30 gain [dB] -30℃ 20 25℃ 10 75℃ 0 -10 1.E+01 1.E+021.E+03 1.E+041.E+05 1.E+061.E+07 frequency [Hz] -30℃ -30℃ 20 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℃ 75℃ frequency [Hz] frequency [Hz] Fig.10 amp1/amp2 closed-loop-gain VDD=2.97V Fig.11 amp1/amp2 closed-loop-gain VDD=5V Fig.12 amp1/amp2 closed-loop-gain VDD=6V www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 3/8 2011.10 - Rev.A BD9251FV ●Electrical characteristic curves (Reference data) – Continued 7 6 5 A2_OUT [V] 4 3 2 1 0 2 3 4 5 6 7 VDD [V] -30℃ 25℃ A2_OUT [V] 75℃ 7 6 6V 5 4 3 2.97V 2 1 0 -50 0 Ta [℃] 50 100 Technical Note 7 6 5 A2_OUT [V] 5V 4 3 2 1 0 2 3 4 5 6 7 VDD [V] -30℃ 25℃ 75℃ Fig.13 AMP2 Output High Voltage (source 20uA) 7 6 5 A2_OUT [V] Fig.14 AMP2 Output High Voltage (source 20uA) 7 6 5 D_OUT [V] D_OUT [V] 4 3 2 Fig.15 AMP2 Output Low Voltage (sink 20uA) 7 6 5 4 3 -30℃ 2 25℃ 75℃ 4 3 2 1 0 -50 0 Ta [℃] 50 100 2.97V 5V 6V 1 0 2 -30℃ 3 4 25℃ 75℃ 1 0 5 6 7 2 3 4 5 6 7 VDD [V] VDD [V] Fig.16 AMP2 Output Low Voltage (source 20uA) 7 6 5 T_OUT [V] 4 3 2 1 0 2 3 4 5 6 7 VDD [V] -30℃ 25℃ 75℃ Fig.17 D_OUT Output Low Voltage (sink 1mA) 7 6 5 T_OUT [V] 4 3 2 1 0 2 3 4 5 VDD [V] 6 7 Fig.18 D_OUT Output High Voltage (source 1mA) 25℃ -30℃ 75℃ Fig.19 T_OUT Output Low Voltage (sink 1mA) Fig.20 T_OUT Output High Voltage (source 1mA) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 4/8 2011.10 - Rev.A BD9251FV ●Block Diagram/Application C1 C1 BD9251FV BD9251FV Technical Note VDDVDD DRAIN DRAIN C2 Voltage Regulator Voltage Regulator C2 Pyroelectric sensor Pyroelectric sensor 350kΩ D A1P_IN S + AMP1 33kΩ + AMP2 + D_OU 7.5kΩ 650kΩ D A1P_IN S C3 10k Ω G 47kΩ C3 - - 350k Ω 33k Ω T_OU Ｓ 10kΩ 7.5kΩ 33kΩ G + AMP1 + AMP2 + + D_OUT 47kΩ 7.5k Ω 650kΩ - - Ｓ T_OUT A1N_IN A1_OUT A2P_DI A2N_IN A2_OUT REF_OUT COMP_IN + 7.5kΩ 33k Ω GND Ｒ R2 C4 R1 C5 C6 R3 R4 C7 C8 R5 ※ 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 A2_OUT REF_OUT R5 COMP_IN GND R2 C4 R1 C5 C6 R3 R4 C7 C8 ※ 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 ●PIN Description PIN No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 PIN Name GND NC DRAIN A1P_IN A1N_IN A1_OUT A2P_DI A2N_IN A2_OUT REF_OUT COMP_IN D_OUT T_OUT VDD Ground NC R1=R3 R2=R4 R5 : 47kΩ : 4.7MΩ : 220kΩ Function Remarks Power supply for pyroelectric infrared sensor Sensor input Amp1 n-input Amp1 output Amp2 diode output Amp2 n-input Amp2 output, Analog output Reference voltage (1/2VDD) output Comparator input Comparator output Moving detection output Power supply www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 5/8 2011.10 - Rev.A BD9251FV ●Timing chart ( When using dual type pyro sensor ) Left Right 1 →2 Technical Note Left Right 1 ←2 Pyro sensor Time axis Sensor Part Time axis Pyro sensor Sensor Part A1P_IN (Pyro sensor output) A1P_IN Pyro sensor output) VREF_H VREF_H A2_OUT (Analog output) VREF_L A2_OUT (Analog output) 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 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 BD9251FV Technical Note ●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 BD9251FV ●Ordering part number Technical Note B Part No. D 9 Part No. 2 5 1 F V - E 2 Package FV: SSOP-B14 Packaging and forming specification E2: Embossed tape and reel SSOP-B14 5.0 ± 0.2 14 8 Tape Quantity 0.3Min. Embossed carrier tape 2500pcs E2 The direction is the 1pin of product is at the upper left when you hold 6.4 ± 0.3 4.4 ± 0.2 Direction of feed ( reel on the left hand and you pull out the tape on the right hand ) 1 7 0.15 ± 0.1 1.15 ± 0.1 0.10 0.65 0.1 0.22 ± 0.1 1pin (Unit : mm) Direction of feed Reel ∗ Order quantity needs to be multiple of the minimum quantity. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 8/8 2011.10 - Rev.A Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. 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