A1242 ALLEGRO [Allegro MicroSystems], A1242 Datasheet
A1242
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A1242 Summary of contents
Page 1
... South Pole field of sufficient magnitude and will remain in this state until a sufficient North Pole field is present. The A1242 includes the following on a single silicon chip: a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trig- ger, and a current source output. Advanced BiCMOS wafer fabrication process- ing takes advantage of low-voltage requirements, component matching, very low input-offset errors and small component geometries ...
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... Two-Wire Chopper-Stabilized Hall Effect Latch Part Number Packaging* A1242ELHLT-I1-T 7-in. reel, 3000 pieces/reel A1242ELHLT-I2-T A1242EUA-I1-T Bulk, 500 pieces/bag A1242EUA-I2-T A1242LLHLT-I1-T 7-in. reel, 3000 pieces/reel A1242LLHLT-I2-T A1242LUA-I1-T Bulk, 500 pieces/bag A1242LUA-I2-T *Contact Allegro for additional packing options. VCC Terminal List Name VCC Connects power supply to chip GND Ground NC ...
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... B, and the sign indicates the polarity of the field (for example, a –100 G field and a 100 G field have equivalent strength, but opposite polarity). A1242-DS A1242 over full operating voltage and temperature ranges, unless otherwise specified Symbol ...
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... A1242-DS A1242 Symbol Package LH, minimum-K PCB (single layer, single-sided with copper limited to solder pads) Package LH, low-K PCB (single layer, double-sided with R θJA 0.926 in 2 copper area) Package UA, minimum-K PCB (single layer, single-sided with ...
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... Supply Current (Low) versus Supply Voltage (A1242-I1 (V) CC Supply Current (Low) versus Supply Voltage (A1242-I2 (V) CC Supply Current (High) versus Supply Voltage (V) CC Allegro MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 www ...
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... Release Point versus Ambient Temperature -5 -20 -35 -50 -65 -80 - (°C) A Hysteresis versus Ambient Temperature 110 100 - (°C) A A1242-DS A1242 Vcc ( 3 100 150 0 -5 -20 -35 Vcc ( -50 3.5 -65 -80 100 150 0 110 100 ...
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... A1242 pins are no greater than length. All high-frequency interferences conducted along the supply lines are passed directly to the load through C only to protect the A1242 internal circuitry result, the load ECU (electronic control unit) must have sufficient protection, other than C , installed in parallel with the A1242 ...
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... For demodulation process, a sample and hold Hall Element Figure 3. Chopper stabilization circuit (dynamic quadrature offset cancellation) A1242-DS A1242 technique is used, where the sampling is performed at twice the chopper frequency (400 kHz). This high-frequency operation allows a greater sampling rate, which results in higher accuracy and faster signal-processing capability ...
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... I ), without exceeding T CC(max) CC(max selected R and T . θJA A A1242-DS A1242 Power Derating Example: Reliability for V minimum-K PCB. Observe the worst-case ratings for the device, specifically: R θJA I CC(max) Calculate the maximum allowable power level, P invert equation figure of merit sum- Δ ...
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... Two-Wire Chopper-Stabilized Hall Effect Latch A1242-DS A1242 Package LH, 3-Pin (SOT-23W) Package UA, 3-Pin 10 Allegro MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com ...
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... Two-Wire Chopper-Stabilized Hall Effect Latch A1242-DS A1242 The products described herein are manufactured under one or more of the following U.S. patents: 5,045,920; 5,264,783; 5,442,283; 5,389,889; 5,581,179; 5,517,112; 5,619,137; 5,621,319; 5,650,719; 5,686,894; 5,694,038; 5,729,130; 5,917,320; and other patents pending. Allegro MicroSystems, Inc. reserves the right to make, from time to ...