|Category||Analog & Mixed-Signal Processing|
|Description||Quad 2-Input Peripheral/power Driver -- Transient-protected Outputs|
|Company||Allegro Micro Systems, Inc.|
|Datasheet||Download UGS3132UA datasheet
These Hall-effect switches are designed for magnetic actuation using a bipolar magnetic field, i.e., a north-south alternating field. They combine extreme magnetic sensitivity with excellent stability over varying temperature and supply voltage. The high sensitivity permits their use with multi-pole ring magnets over relatively large distances. Each device includes a voltage regulator, quadratic Hall voltage generator, temperature stability circuit, signal amplifier, Schmitt trigger, and open-collector output on a single silicon chip. The on-board regulator permits operation with supply voltages 24 V. The switch output can sink to 25 mA. With suitable output pull up, they can be used directly with bipolar or MOS logic circuits.
The three package styles available provide a magnetically optimized package for most applications. Suffix `LT' is a miniature SOT-89/TO243AA transistor package for surface-mount applications; suffixes `U', and `UA' feature wire leads for through-hole mounting. Prefix `UGN' devices are rated for continuous operation over the temperature range to +85°C, prefix `UGS' devices over an extended range to +125°C, and prefix `UGL' devices over the range to +150°C.Pinning is shown viewed from branded side.
24 V Operation s Reverse Battery Protection s Superior Temperature Stability
Supply Voltage, VCC. 25 V Reverse Battery Voltage, VRCC. -35 V Magnetic Flux Density, B. Unlimited Output OFF Voltage, VOUT. 25 V Continuous Output Current, IOUT. 25 mA Operating Temperature Range, TA Prefix UGL. to +150°C Prefix UGN. to +85°C Prefix UGS. to +125°C Storage Temperature Range, TS. to +150°C
s Superior Supply Voltage Stability s Activate with Multi-Pole Ring Magnets s Solid-State Reliability s Small Size s Constant Output Amplitude s Resistant to Physical StressAlways order by complete part number including prefix and suffix, e.g., UGN3132LT.
Limits Characteristic Supply Voltage Output Saturation Voltage Output Leakage Current Supply Current Output Rise Time Output Fall Time Symbol VCC VOUT(SAT) IOFF ICC tr tf Test Conditions Operating IOUT = 20 mA, B BOP VOUT V, B BRP VCC V, B BRP VCC 20 pF VCC 20 pF Min. 4.5 Typ. Max. Units mA µsMAGNETIC CHARACTERISTICS over operating temperature and voltage range.
Limits Characteristic Operate Point Symbol BOP Device Type* 3132 3133 Release Point BRP 3132 3133 Hysteresis Bhys Both Min. -75 30 Typ. Max. 95 75 Units
NOTE: As used here, negative flux densities are defined as less than zero (algebraic convention.) Typical values are = +25°C and VCC V. 1 gauss (G) is exactly equal to 0.1 millitesla (mT). * Complete part number includes a prefix denoting operating temperature range (UGL, UGN, or UGS) and a suffix denoting package type (LT, U, or UA).
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts (508) 853-5000 Copyright © 1996,1999, Allegro MicroSystems, Inc.
Powering up in the absence of a magnetic field (less than BOP and higher than BRP) will allow an indeterminate output state. The correct state is warranted after the first excursion beyond BOP or BRP.
Bipolar switches may switch on removal of field but require field reversal for reliable operation over temperature range; latches will not switch on removal of magnetic field.
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