AH211 AH211Z4-AE1 AH211Z4-AG1 AH211Z4-G1 AH211Z4-BE1 AH211Z4-BG1

TWO PHASE HALL EFFECT LATCH WITH FG OUTPUT General Description Features The AH211 is an integrated Hall sensor with output driver

Data Sheet TWO PHASE HALL EFFECT LATCH WITH FG OUTPUT General Description Features The AH211 AH211 is an integrated Hall sensor with output driver and frequency generator designed for electronic commutation of brush-less DC motor applications. The device includes an on-chip Hall sensor for magnetic sensing, an amplifier that amplifies the Hall voltage, a Schmitt trigger to provide switching hysteresis for noise rejection, a temperature compensation circuit to compensate the temperature drift of Hall sensitivity, two complementary open-collector drivers for sinking large load current. It also includes an internal band-gap regulator which is used to provide bias voltage for internal circuits. · · · · · · · AH211 AH211 On-Chip Hall Sensor 3.5V to 16V Supply Voltage 400mA (avg) Output Sink Current -20oC to 85oC Operating Temperature Built-in FG Output Low Profile TO-94 (SIP-4L) Package ESD Rating: 300V (Machine Model) Applications · · · · Place the device in a variable magnetic field, while the magnetic flux density is larger than threshold BOP, DO will be turned on (low) and DOB (and FG) will be turned off (high). This output state is held till the magnetic flux density reversal falls below BRP causing DO to be turned off (high) and DOB (and FG) turned on (low). Dual-Coil Brushless DC Motor Dual-Coil Brushless DC Fan Revolution Counting Speed Measurement AH211 AH211 is available in TO-94 (SIP-4L) package. TO-94 Figure 1. Package Type of AH211 AH211 Jun. 2008 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 1 Data Sheet TWO PHASE HALL EFFECT LATCH WITH FG OUTPUT AH211 AH211 Pin Configuration Z4 Package (TO-94) 4 GND 3 2 DOB DO 1 FG Figure 2. Pin Configuration of AH211 AH211 (Front View) Pin Description Pin Number Pin Name Function 1 FG Frequency Generation 2 DO Output 1 3 DOB Output 2 4 GND Ground Jun. 2008 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 2 Data Sheet TWO PHASE HALL EFFECT LATCH WITH FG OUTPUT AH211 AH211 Functional Block Diagram 2 Temperature Compensation Regulator Hall Sensor DO Schmitt Trigger Amplifier Output Driver 3 4 DOB GND 1 FG Figure 3. Functional Block Diagram of AH211 AH211 Ordering Information AH211 AH211 - Circuit Type Package Z4: TO-94 (SIP-4L) Package TO-94 E1: Lead Free G1: Green Magnetic Characteristics A: 5 to 60 Gauss B: 90 Gauss Temperature Range -20 to 85 oC Part Number Lead Free Marking ID Green Lead Free Green Packing Type AH211Z4-AE1 AH211Z4-AE1 AH211Z4-AG1 AH211Z4-AG1 AH211 AH211 AH211Z4-G1 AH211Z4-G1 Bulk AH211Z4-BE1 AH211Z4-BE1 AH211Z4-BG1 AH211Z4-BG1 AH211 AH211 AH211Z4-G1 AH211Z4-G1 Bulk BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with "G1" suffix are available in green package. Jun. 2008 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 3 Data Sheet TWO PHASE HALL EFFECT LATCH WITH FG OUTPUT AH211 AH211 Absolute Maximum Ratings (Note 1) (TA=25oC) Parameter Symbol 20 V B Unlimited Gauss 400 mA 600 mA 800 Magnetic Flux Density Unit VCC Supply Voltage Value mA Continuous Output Current IO Hold Peak (start up) FG Current IFG 20 mA Power Dissipation PD 550 mW Die to atmosphere JA 227 Die to package case JC 49 TSTG -50 to 150 Thermal Resistance Storage Temperature o C/W oC/W o C ESD (Machine Model) 300 V ESD (Human Body Model) 3000 V Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. "Absolute Maximum Ratings" for extended period may affect device reliability. Recommended Operating Conditions (TA=25oC) Parameter Supply Voltage Ambient Temperature Symbol Min Max VCC 3.5 16 V 85 o TA -20 Jun. 2008 Rev. 1. 5 Unit C BCD Semiconductor Manufacturing Limited 4 Data Sheet TWO PHASE HALL EFFECT LATCH WITH FG OUTPUT AH211 AH211 Electrical Characteristics (TA=25oC, VCC=14V, unless otherwise specified) Parameter Symbol Test Condition Min Typ Max Unit B>150Gauss, VCC=3.5V, VDOB=VCC, IDO=100mA (or B150Gauss, VDOB=VCC, IDO=400mA (or B150Gauss, VDOB=VCC, (or B