A3425EL Allegro Microsystems Inc, A3425EL Datasheet
A3425EL
Specifications of A3425EL
Available stocks
Related parts for A3425EL
A3425EL Summary of contents
Page 1
These parts are in production but have been determined to be LAST TIME BUY. This classification indicates that the product is obsolete and notice has been given. Sale of this device is currently restricted to existing customer applications. The device ...
Page 2
Features and Benefits ▪ Two matched Hall effect switches on a single substrate ▪ Hall element spacing approximately 1 mm ▪ Superior temperature stability ▪ 3 operation ▪ Integrated ESD diode from OUTPUT and VCC pins to ...
Page 3
A3425 Description (continued) quadrature. The patented chopper stabilization technique cancels offsets in each channel, and provides stable operation over the operating temperature and voltage ranges. An on-chip regulator allows the use of this device over a wide operating voltage range. ...
Page 4
A3425 VCC Channel A Hall Element E1 Channel B Hall Element E2 Package K Package Ultra-Sensitive Dual-Channel Quadrature Hall-Effect Bipolar Switch Functional Block ...
Page 5
A3425 OPERATING CHARACTERISTICS and T = 25º Characteristic ELECTRICAL CHARACTERISTICS 1 Supply Voltage Output Leakage Current Output Rise Time Output Fall Time Supply Current Low Output Voltage Output Sink Current Output Sink Current, Continuous ...
Page 6
A3425 OPERATING CHARACTERISTICS (continued) data applies and T = 25º Characteristic MAGNETIC CHARACTERISTICS, K Package Operate Point: B > Release Point: B < Hysteresis: B – OP(A) ...
Page 7
A3425 THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information Characteristic Package Thermal Resistance *Additional thermal data available on the Allegro Web site. Ultra-Sensitive Dual-Channel Quadrature Symbol Package K, 1-layer PCB with copper limited to solder pads R ...
Page 8
A3425 Chopper-Stabilized Technique When using Hall effect technology, a limiting factor for switchpoint accuracy is the small signal voltage developed across the Hall element. This voltage is dis- proportionally small relative to the offset that can be produced at the ...
Page 9
A3425 Channel A M agnetic Field at Hall Element E1 Channel B M agnetic Field at Hall Element E2 Channel A Output Signal at OUTPUTA Channel B Output Signal at OUTPUTB Ultra-Sensitive Dual-Channel Quadrature Typical Applications Operation V+ B HYS ...
Page 10
A3425 This device requires minimal protection circuitry during operation with a low-voltage regulated line. The on-chip voltage regulator provides immunity to power supply variations between 3.3 and 18 V. Because the device has open-drain outputs, pull-up resistors must be included. ...
Page 11
A3425 The device must be operated below the maximum junction temperature of the device Under certain combinations of J(max) peak conditions, reliable operation may require derating sup- plied power or improving the heat dissipation properties of the application. ...
Page 12
A3425 Electrical Operating Characteristics, Package L I CC(off ( CC(on (V) CC ...
Page 13
A3425 Magnetic Operating Characteristics, Package L Channel A, B and -10 -20 - (V) CC Channel B, B and ...
Page 14
A3425 Magnetic Operating Characteristics, Package L (continued) B Symmetry -10 - Symmetry -10 -20 - (V) CC Additional ...
Page 15
A3425 Magnetic Operating Characteristics, Package L (continued) Channel A Symmetry -10 -20 - (V) CC Channel B Symmetry -10 -20 - (V) CC Ultra-Sensitive ...
Page 16
A3425 Electrical Operating Characteristics, Package K I CC(off ( CC(on (V) CC ...
Page 17
A3425 Magnetic Operating Characteristics, Package K Channel A, B and -10 -20 - (V) CC Channel B, B and ...
Page 18
A3425 Magnetic Operating Characteristics, Package K (continued) B Symmetry -10 - Symmetry -10 -20 - (V) CC Additional ...
Page 19
A3425 Magnetic Operating Characteristics, Package K (continued) Channel A Symmetry -10 -20 - (V) CC Channel B Symmetry -10 -20 - (V) CC Ultra-Sensitive ...
Page 20
A3425 45° +0.08 3.43 –0.05 E1 2.16 MAX 0.51 REF 1 14.73 ±0.51 +0.07 0.41 –0.05 Ultra-Sensitive Dual-Channel Quadrature Package K, 4-pin SIP +0.08 5.21 –0. 2.10 1.00 1.55 ±0.05 1. 45° Branded Face ...
Page 21
A3425 4.90 ±0. 0.10 C 0.41 ±0.10 1.27 BSC For Reference Only; not for tooling use (reference DWG-9204) Dimensions in millimeters Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact ...