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Description
The Allegro
"
 A1202 and A1203 Hall-effect bipolar switches
are next-generation replacements and extension of the popular
Allegro A3133 and A3132 bipolar switch product line. Overall,
the A120x family, produced with BiCMOS technology, consists
of continuous-time devices that feature fast power-on time
and low-noise operation. Device programming is performed
after packaging, to ensure increased switchpoint accuracy
by eliminating offsets that can be induced by package stress.
Unique Hall element geometries and low-offset amplifiers
help to minimize noise and to reduce the residual offset
voltage normally caused by device overmolding, temperature
excursions, and thermal stress.
The A120x Hall-effect bipolar switches include the following on
a single silicon chip: voltage regulator, Hall-voltage generator,
small-signal amplifier, Schmitt trigger, and NMOS output
transistor. The integrated voltage regulator permits operation
from 3.8 to 24 V. The extensive on-board protection circuitry
makes possible a ?0 V absolute maximum voltage rating for
superior protection in automotive and motor commutation
A1202-DS, Rev. 17
Features and Benefits
? Continuous-time operation
?Fast power-on time
?Low noise
? Stable operation over full operating temperature range
? Reverse battery protection
? Solid-state reliability
? Factory-programmed at end-of-line for optimum
performance
? Robust EMC performance
? High ESD rating
? Regulator stability without a bypass capacitor
Continuous-Time Bipolar Switch Family
Continued on the next page&
Packages: 3 pin SOT23W (suffix LH), and
3 pin SIP (suffix UA)
Functional Block Diagram
Not to scale
A1202 and A1203
Amp
Regulator
GND
VCC
VOUT
Offset
Gain
Trim
Control
To all subcircuits
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相关代理商/技术参数
A1203T-1W 制造商:RSG 制造商全称:RSG 功能描述:FIXED INPUT ISOLATED & UNREGULATED 1W DUAL OUTPUT UTRALMINIATURE SMD PACKAGE
A1203XD-1W25 制造商:MICRODC 制造商全称:MICRODC 功能描述:Isolated 1.25W Dual Output DC-DC Converters
A1203XMD-1W 制造商:MICRODC 制造商全称:MICRODC 功能描述:1KV ISOLATED 1W UNREGULATED DUAL OUTPUT DIP8 DC∕DC Converter
A1204 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Continuous-Time Bipolar Switch Family
A1204 10HDG 制造商:Thomas & Betts 功能描述:CHANNEL
A1204 20RW 制造商:Thomas & Betts 功能描述:TWO A1202S WELDED TOGETHER
A1204.0 制造商:DORMER 功能描述:STUB DRILL HSS 4MM 制造商:DORMER 功能描述:STUB DRILL, HSS, 4MM 制造商:DORMER 功能描述:STUB DRILL, HSS, 4MM; Drill Bit Size Metric:4mm; Effective Length:22mm; Overall Length:55mm; SVHC:No SVHC (19-Dec-2012); Drill Bit Type:Stub; Drill Point Diameter:4mm; External Diameter:4.00mm; Material:HSS ;RoHS Compliant: NA
A1204.2 制造商:DORMER 功能描述:STUB DRILL HSS 4.2MM