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Allegro MicroSystems A1302KUATI-T
- Part No.:
- A1302KUATI-T
- Manufacturer:
- Allegro MicroSystems
- Category:
- Linear, Compass (ICs)
- Package:
- 3-SSIP
- Datasheet:
-
A1302KUATI-T.pdf
- Description:
- IC LINEAR HALL SENSOR 3SIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,524
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Product details
Overview
A1302KUATI-T from Allegro MicroSystems is a continuous-time, ratiometric, linear Hall-effect sensor IC optimized for accurate voltage output proportional to applied magnetic field. It delivers 1.3 mV/G typical sensitivity, 50% VCC quiescent output, and operates from –40°C to 125°C in a 3-pin SIP (UA) package with 100% matte tin plating. Used in industrial position sensing for rotational and linear motion under extended temperature conditions.
For engineers reviewing the A1302KUATI-T datasheet, A1302KUATI-T pinout, A1302KUATI-T application, or A1302KUATI-T equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation guidance, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The A1302KUATI-T integrates a Hall element, linear amplifier, and CMOS Class A output stage on a single die, eliminating external signal conditioning for low-level analog Hall signals. Its ratiometric architecture ensures both quiescent output voltage (VOUTQ = 0.5 × VCC) and magnetic sensitivity scale linearly with supply voltage across 4.5–6.0 V.
Internal end-of-line gain and offset trimming achieves ±3.0% quiescent voltage error and ±3.0% sensitivity error over supply variation, while output linearity remains within ±2.5% and symmetry within ±3.0% at 25°C. The device features 20 kHz bandwidth, 3 µs typical power-on time, and rail-to-rail output swing with <5 Ω output resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sensitivity | 1.3 mV/G typical - enables precise analog field measurement with 1.0–1.6 mV/G tolerance over full temperature range |
| Quiescent Output Voltage | 2.5 V ±0.1 V at 5 V supply - stable mid-rail bias simplifies ADC interfacing and differential sensing |
| Supply Range | 4.5–6.0 V - compatible with standard 5 V industrial rails and tolerant of transient droop |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial motor control environments |
| Output Bandwidth | 20 kHz - supports real-time monitoring of fast-rotating shafts up to ~120,000 RPM with 1-pole response |
| Power-On Time | 3 µs typical - allows rapid system wake-up and synchronized sampling in low-duty-cycle applications |
| Wideband Noise | 150 µV rms (≤10 kHz filter) - limits quantization error to <0.5 LSB for 12-bit ADCs at 5 V full-scale |
Pinout & Package
Package: 3-pin ultramini SIP (UA), through-hole mount, Pb-free with 100% matte tin plated leadframes. Dimensions per DWG-9065: 14.99 mm × 3.02 mm × 4.09 mm, active area depth 0.50 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Positive supply input | Accepts 4.5–6.0 V; powers internal Hall circuit, amplifier, and output stage; bypass capacitor required |
| GND (Pin 2) | Ground reference | Common return for supply and output; must be low-impedance path to minimize noise coupling |
| VOUT (Pin 3) | Analog output terminal | Provides ratiometric voltage proportional to B-field; sinks/sours ±1 mA; rail-to-rail swing capability |
Key Features
| Feature | Design Value |
|---|---|
| Ratiometric output | Both VOUTQ and sensitivity scale with VCC - eliminates need for precision voltage reference in supply-varying systems |
| Factory-trimmed gain/offset | End-of-line laser trimming ensures ±2.5% linearity and ±3.0% ratiometric error - reduces calibration overhead in production |
| Low-noise output | 150 µV rms wideband noise - supports high-resolution position feedback without external filtering in most cases |
| Fast power-on time | 3 µs typical wake-up - enables microsecond-precision timing in burst-mode sensing applications |
| Robust ESD performance | Qualified to >4 kV HBM - withstands handling and board assembly without additional protection circuitry |
Applications
| Motor Commutation | Rotary Position Sensing |
|---|---|
|
Use Scenario: Detecting rotor pole position in BLDC motors for electronic commutation. IC Role / Device Role / Timing Role: Analog linear Hall sensor providing continuous angular position feedback to MCU-based gate driver logic. Use Value: 1.3 mV/G sensitivity and 20 kHz bandwidth enable accurate 120° electrical phase detection at 10,000 RPM with minimal latency. |
Use Scenario: Measuring angular displacement of rotating shafts in industrial valves and actuators. IC Role / Device Role / Timing Role: Ratiometric analog output source interfaced directly to 12-bit SAR ADC for absolute angle reconstruction. Use Value: ±2.5% linearity and ±3.0% symmetry ensure sub-degree angular accuracy over full mechanical rotation range. |
| Linear Position Feedback | Current Sensing (Indirect) |
|
Use Scenario: Monitoring piston travel in hydraulic cylinders using back-iron magnet coupling. IC Role / Device Role / Timing Role: Linear field-to-voltage transducer placed adjacent to moving ferrous target with calibrated air gap. Use Value: Stable 50% VCC quiescent point and –40°C to +125°C operation maintain zero-point integrity across thermal cycling in harsh environments. |
Use Scenario: Isolated DC current measurement via magnetic field from conductor loop. IC Role / Device Role / Timing Role: Field-sensing element in open-loop current transducer, converting flux density to proportional voltage. Use Value: Ratiometric behavior cancels supply-induced gain drift, improving long-term current measurement stability without closed-loop compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear Hall-effect sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| A1308ELHLT-T | Higher sensitivity (3.0 mV/G typical), same UA/LH packages, identical pinout, but rated only to 85°C ambient | Not qualified for 125°C industrial or under-hood use; suitable for cost-sensitive consumer or commercial-grade designs | Select when higher resolution is needed and temperature range ≤85°C; verify PCB layout compatibility with LH footprint if migrating from UA |
| A1324LLHLT-T | Wider supply range (3.0–24 V), 2.5 mV/G sensitivity, integrated reverse-polarity protection, same SOT23W (LH) package only | No SIP (UA) option; requires surface-mount assembly; reverse-voltage tolerance adds robustness in battery-powered systems | Choose for new designs needing broader supply flexibility and polarity protection; not drop-in for A1302KUATI-T's through-hole SIP footprint |
Compared with A1302KUATI-T, A1308ELHLT-T offers higher sensitivity but sacrifices high-temperature capability, while A1324LLHLT-T extends supply range and adds protection but abandons through-hole mounting - selection depends on whether thermal rating, resolution, or supply robustness dominates the design requirement.
Availability
A1302KUATI-T is available at Aetrix Electronics and suitable for industrial motor control, rotary position sensing, linear actuator feedback, and current transduction applications requiring stable component supply despite its Last Time Buy status.
Supply support for A1302KUATI-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Allegro MicroSystems is a U.S.-based designer and manufacturer of high-performance magnetic sensors and power ICs, headquartered in Worcester, Massachusetts.
The A1302KUATI-T belongs to Allegro's continuous-time ratiometric linear Hall-effect sensor product line, engineered for high-accuracy analog position and motion sensing in demanding industrial and automotive environments.
FAQ
What is the operating temperature range of the A1302KUATI-T?
The A1302KUATI-T is rated for operation from –40°C to +125°C ambient temperature. This extended range is validated for the K-grade version and applies specifically to the UA (SIP) package configuration. Performance parameters including sensitivity, quiescent output voltage, and linearity are guaranteed across this full range per the official Allegro datasheet A1301-DS Rev. 22.
Is the A1302KUATI-T pin-compatible with other devices in the A130x family?
Yes, the A1302KUATI-T shares identical pinout and terminal functions with all A1301/A1302 variants in the UA (3-pin SIP) package - VCC (Pin 1), GND (Pin 2), VOUT (Pin 3). However, sensitivity differs (1.3 mV/G vs. 2.5 mV/G for A1301), so direct substitution requires recalibration or gain adjustment in the signal chain.
What does "Last Time Buy" mean for the A1302KUATI-T?
"Last Time Buy" indicates the A1302KUATI-T is obsolete and no longer recommended for new designs. Allegro set August 30, 2017 as the final order date. Aetrix Electronics maintains limited legacy stock for existing customer production continuity, but samples are unavailable and long-term supply cannot be guaranteed beyond current inventory.
How does the ratiometric feature of the A1302KUATI-T benefit system design?
The A1302KUATI-T's ratiometric behavior means both its quiescent output voltage and magnetic sensitivity scale proportionally with supply voltage. This eliminates gain drift errors caused by VCC variation, allowing direct interface to ADCs without separate voltage references - a key advantage in systems with unregulated or noisy 5 V rails.
What is the maximum output sink/source capability of the A1302KUATI-T?
The A1302KUATI-T output can sink up to 10 mA and source up to –1 mA while maintaining specified voltage levels. Its typical output resistance is 2 Ω, enabling direct drive of 10 kΩ+ loads without buffering. For heavier loads or long traces, an external op-amp buffer is recommended to preserve linearity and noise performance.
A1302KUATI-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Series:
- -
- Package/Case:
- 3-SSIP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- -
- Axis:
- -
- Output Type:
- -
- Sensing Range:
- -
- Voltage - Supply:
- -
- Current - Supply (Max):
- -
- Current - Output (Max):
- -
- Resolution:
- -
- Bandwidth:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Supplier Device Package:
- 3-SIP
- Mounting Type:
- Through Hole
A1302KUATI-T FAQ
1.How can I place an order for A1302KUATI-T through Aetrix?
Please submit a Request for Quotation (RFQ) for A1302KUATI-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for A1302KUATI-T reliable?
The price and inventory of A1302KUATI-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for A1302KUATI-T is usually 5 days.
3.What payment methods are accepted for A1302KUATI-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for A1302KUATI-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for A1302KUATI-T?
A1302KUATI-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your A1302KUATI-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for A1302KUATI-T?
For technical support, including A1302KUATI-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your A1302KUATI-T requirements.
6.How does Aetrix verify that A1302KUATI-T is sourced from the original manufacturer or authorized distributors?
All A1302KUATI-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that A1302KUATI-T meets industry standards.
7.What is the process for return or replacement of A1302KUATI-T?
All A1302KUATI-T units undergo pre-shipment inspection (PSI). If there is an issue with A1302KUATI-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The A1302KUATI-T part is unused and in its original packaging.
Return procedure for A1302KUATI-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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