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Signal Circuits / Other Signal Circuits / A3121ELTTR
Datasheets
A3121ELTTR by: Allegro MicroSystems LLC

Analog Circuit, 1 Func, PSSO3, TO-243AA, SOT-89, 3 PIN

Part Details for A3121ELTTR by Allegro MicroSystems LLC

Results Overview of A3121ELTTR by Allegro MicroSystems LLC

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Applications Education and Research Aerospace and Defense Agriculture Technology Robotics and Drones

A3121ELTTR Information

A3121ELTTR by Allegro MicroSystems LLC is an Other Signal Circuit.
Other Signal Circuits are under the broader part category of Signal Circuits.

A signal is an electronic means of transmitting information, either as an analog signal with continuous values or a digital signal with discrete values. Signals are used in various systems and networks. Read more about Signal Circuits on our Signal Circuits part category page.

Price & Stock for A3121ELTTR

Part # Distributor Description Stock Price Buy
Bristol Electronics   403
RFQ

Part Details for A3121ELTTR

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A3121ELTTR Part Data Attributes

Parametric Data
A3121ELTTR Allegro MicroSystems LLC
Buy Now Datasheet
Compare Parts:
A3121ELTTR Allegro MicroSystems LLC Analog Circuit, 1 Func, PSSO3, TO-243AA, SOT-89, 3 PIN
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Rohs Code No
Part Life Cycle Code Obsolete
Ihs Manufacturer ALLEGRO MICROSYSTEMS LLC
Part Package Code SOT-89
Package Description TO-243AA, SOT-89, 3 PIN
Pin Count 3
Reach Compliance Code unknown
HTS Code 8542.39.00.01
Additional Feature REVERSE BATTERY PROTECTION
Analog IC - Other Type ANALOG CIRCUIT
JESD-30 Code R-PSSO-F3
JESD-609 Code e0
Length 4.5 mm
Number of Functions 1
Number of Terminals 3
Operating Temperature-Max 85 °C
Operating Temperature-Min -40 °C
Package Body Material PLASTIC/EPOXY
Package Code SOF
Package Equivalence Code TO-243
Package Shape RECTANGULAR
Package Style SMALL OUTLINE
Qualification Status Not Qualified
Seated Height-Max 1.6 mm
Supply Voltage-Max (Vsup) 24 V
Supply Voltage-Min (Vsup) 4.5 V
Supply Voltage-Nom (Vsup) 12 V
Surface Mount YES
Temperature Grade INDUSTRIAL
Terminal Finish TIN LEAD
Terminal Form FLAT
Terminal Pitch 1.5 mm
Terminal Position SINGLE
Width 2.445 mm

Alternate Parts for A3121ELTTR

This table gives cross-reference parts and alternative options found for A3121ELTTR. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of A3121ELTTR, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
A3121LLT Allegro MicroSystems LLC Check for Price Analog Circuit, 1 Func, PSSO3, TO-243AA, SOT-89, 3 PIN A3121ELTTR vs A3121LLT
A3121LLT Sanken Electric Co Ltd Check for Price Analog Circuit, 1 Func, PSSO3, MINIATURE, TO-243AA, SOT-89, 3 PIN A3121ELTTR vs A3121LLT
Part Number Manufacturer Composite Price Description Compare
A3121LLTTR Allegro MicroSystems LLC Check for Price Analog Circuit, 1 Func, PSSO3, TO-243AA, SOT-89, 3 PIN A3121ELTTR vs A3121LLTTR
A3142EUA Sanken Electric Co Ltd Check for Price Analog Circuit, 1 Func, PSIP3, ULTRA MINI, SIP-3 A3121ELTTR vs A3142EUA
A3142LLL Allegro MicroSystems LLC Check for Price Analog Circuit, PSIP3 A3121ELTTR vs A3142LLL
A3121EU Sanken Electric Co Ltd Check for Price Analog Circuit, 1 Func, PSIP3, MINI, PLASTIC, SIP-3 A3121ELTTR vs A3121EU
A3142ELTTR Allegro MicroSystems LLC Check for Price Analog Circuit, 1 Func, PDSO3, TO-243AA, SOT-89, 3 PIN A3121ELTTR vs A3142ELTTR
A3143LU Allegro MicroSystems LLC Check for Price Analog Circuit, 1 Func, PSIP3, MINI, PLASTIC, SIP-3 A3121ELTTR vs A3143LU
A3123LLTTR Allegro MicroSystems LLC Check for Price Analog Circuit, 1 Func, PSSO3, TO-243AA, SOT-89, 3 PIN A3121ELTTR vs A3123LLTTR
A3122ELT Sanken Electric Co Ltd Check for Price Analog Circuit, 1 Func, PSSO3, MINIATURE, TO-243AA, SOT-89, 3 PIN A3121ELTTR vs A3122ELT
A3142LUA-LC Allegro MicroSystems LLC Check for Price Analog Circuit, 1 Func, SIP-3 A3121ELTTR vs A3142LUA-LC
A3141EUA-LC Allegro MicroSystems LLC Check for Price Analog Circuit, 1 Func, SIP-3 A3121ELTTR vs A3141EUA-LC

A3121ELTTR Related Parts

A3121ELTTR Frequently Asked Questions (FAQ)

  • Allegro provides a recommended PCB layout in their application note AN296070, which includes guidelines for trace routing, component placement, and thermal management to ensure optimal performance and minimize noise.

  • To handle the output voltage swing, you can use a voltage divider or a level shifter to step down the output voltage to a level compatible with your microcontroller. Additionally, ensure that the microcontroller's input pins are 5V tolerant or use a buffer circuit to protect them.

  • The maximum allowable current through the output pins is 20 mA. Exceeding this limit may cause damage to the device or affect its performance. It's essential to ensure that the output current is within the specified limit to maintain reliability and accuracy.

  • Calibration involves adjusting the device's internal registers to compensate for manufacturing variations and temperature effects. Allegro provides a calibration procedure in their application note AN296070, which includes steps for adjusting the offset and gain registers to achieve optimal accuracy.

  • The A3121ELTTR is designed to operate over a temperature range of -40°C to 150°C. Temperature changes can affect the device's accuracy, gain, and offset. Allegro provides temperature coefficients in the datasheet, which can be used to compensate for temperature effects in your application.