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Allegro MicroSystems A1319LUATN-5-T
- Part No.:
- A1319LUATN-5-T
- Manufacturer:
- Allegro MicroSystems
- Category:
- Linear, Compass (ICs)
- Package:
- 3-SSIP
- Datasheet:
-
A1319LUATN-5-T.pdf
- Description:
- SENSOR HALL EFFECT ANALOG 3SIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,654
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Product details
Overview
A1319LUATN-5-T from Allegro MicroSystems is a linear Hall-effect sensor IC with analog output, designed for high-accuracy angular and displacement sensing in automotive and industrial systems. It delivers 5 mV/G sensitivity, ratiometric 1.65 V quiescent output at 3.3 V supply, operates from –40°C to 150°C, and features programmable temperature coefficients for sensitivity and QVO - used in throttle position, brake pedal, and transmission gear sensing.
For engineers reviewing the A1319LUATN-5-T datasheet, A1319LUATN-5-T pinout, A1319LUATN-5-T application, or A1319LUATN-5-T equivalent, this page provides verified technical context, package-specific pin definitions, real-world application cards, and two validated alternative parts for legacy design continuity and obsolescence mitigation.
Technical Context
The A1319LUATN-5-T integrates a BiCMOS monolithic circuit with a Hall element, dynamic offset cancellation, and a high-gain amplifier. Its chopping frequency is 400 kHz, enabling low-drift performance across temperature via end-of-line programming of both sensitivity and QVO temperature coefficients.
It implements ratiometric operation: output voltage, sensitivity, and clamp levels scale linearly with VCC. Output clamps (VCLPHIGH = 2.97 V, VCLPLOW = 0.33 V at 3.3 V) provide short-circuit diagnostics, while undervoltage lockout (VUVLOHI = 3 V, VUVLOLO = 2.5 V) ensures clean power-on/off behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sensitivity | 5 mV/G (typical); enables precise magnetic field resolution for sub-degree angular position detection |
| Quiescent Output Voltage | 1.65 V (typical at 3.3 V supply); centered at 50% VCC for maximum symmetric signal swing |
| Supply Voltage Range | 3.0–3.63 V; optimized for 3.3 V systems with ±10% tolerance margin |
| Operating Temperature | –40°C to +150°C; qualified for under-hood automotive and industrial motor control environments |
| Output Bandwidth | 20 kHz (–3 dB); supports fast-response applications like pedal position feedback in EVs |
| QVO Temp Coefficient | 0.12 %/°C (typical); programmed at Allegro to minimize drift over full temperature range |
| Input Referred Noise | 2.3 mG/√Hz; enables stable low-field measurements without external filtering |
Pinout & Package
Package: 3-pin ultramini SIP (UA), through-hole mount, 1.5 mm × 4 mm × 3 mm, lead-free with 100% matte-tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power input | Supply pin requiring 0.1 µF bypass capacitor to GND; UVLO active below 2.5 V |
| GND | Reference ground | Return path for supply and output; must be low-impedance for noise immunity |
| VOUT | Analog output | Low-impedance ratiometric voltage output (clamped at 0.33 V / 2.97 V); drives ≥4.7 kΩ load |
Key Features
| Feature | Design Value |
|---|---|
| Programmable QVO TC | Temperature coefficient for quiescent voltage is factory-programmed to maintain <±20 mV drift over –40°C to 150°C |
| Chopping stabilization | 400 kHz chopping scheme eliminates thermal and mechanical stress-induced offset drift, ensuring precise recoverability after temperature cycling |
| Ratiometric output | VOUT(Q), sensitivity, and clamp voltages scale with VCC - simplifies system-level calibration when supply varies |
| Output voltage clamps | Clamp thresholds (0.33 V / 2.97 V at 3.3 V) enable open-load and short-circuit diagnostics without external components |
| Undervoltage lockout | Hysteresis between 2.5 V (power-off) and 3.0 V (power-on) prevents erratic output during brownout conditions |
Applications
| Throttle Position Sensing | Brake Pedal Position |
|---|---|
Use Scenario: Measures rotational angle of engine throttle valve in gasoline and hybrid powertrains. IC Role / Device Role / Timing Role: Linear Hall-effect sensor providing analog voltage proportional to magnet rotation relative to fixed housing. Use Value: 5 mV/G sensitivity and ±1.5% linearity error enable <0.5° angular resolution; extended temperature range supports under-hood mounting. | Use Scenario: Detects travel distance and release timing of hydraulic brake pedals in ABS and EPB systems. IC Role / Device Role / Timing Role: Analog-output Hall sensor mounted on pedal arm, measuring field change from moving magnet. Use Value: 20 kHz bandwidth captures rapid pedal actuation; output clamps flag wiring faults before safety-critical failure. |
| Transmission Gear Selector | Electric Power Steering (EPS) Torque Sensing |
Use Scenario: Monitors detent positions of PRNDL selector lever in automatic transmissions. IC Role / Device Role / Timing Role: Through-hole SIP-mounted sensor detecting discrete magnetic pole transitions for gear state identification. Use Value: UA package's mechanical robustness withstands vibration; 150°C rating supports proximity to transmission fluid heat sources. | Use Scenario: Measures torsion bar twist in EPS column to derive driver torque input. IC Role / Device Role / Timing Role: High-stability linear Hall sensor placed on torsion bar ends, capturing differential field changes. Use Value: 0.12 %/°C QVO TC and <±2% sensitivity drift ensure torque accuracy across cabin temperature swings. |
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 |
|---|---|---|---|
| A1315LLHLT-5-T | Same 5 mV/G sensitivity, but SOT-23W surface-mount package; higher bandwidth (25 kHz); no UVLO hysteresis spec | Requires PCB redesign for SMT placement; better suited for space-constrained EPS modules | Select when new designs prioritize miniaturization and higher speed over through-hole serviceability |
| ACS724LLCTR-5AB-T | Current sensor (not field sensor); 5 A range; integrated conductor; different measurement principle and calibration | Not interchangeable - measures current flow, not magnetic field; used in motor phase current feedback, not position | Consider only for current-sensing applications where magnetic field sensing is not required |
Compared with A1319LUATN-5-T, A1315LLHLT-5-T offers surface-mount compatibility and slightly faster response but lacks the UA package's mechanical retention and diagnostic clamping margin; ACS724LLCTR-5AB-T serves a fundamentally different function and cannot replace position sensing in throttle or pedal systems.
Availability
A1319LUATN-5-T is available at Aetrix Electronics and suitable for throttle position sensing, brake pedal monitoring, and transmission gear selector applications requiring stable component supply for legacy automotive programs.
Supply support for A1319LUATN-5-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 sensing and power ICs, founded in 1989 and headquartered in Manchester, NH.
The A1318/A1319 product line was developed specifically for high-accuracy, temperature-stable linear position sensing in automotive powertrain and chassis systems - emphasizing factory-programmed calibration, extended temperature operation, and diagnostic-ready analog outputs.
FAQ
What is the operating supply voltage range for the A1319LUATN-5-T?
The A1319LUATN-5-T operates from 3.0 V to 3.63 V, with typical performance specified at 3.3 V. Its undervoltage lockout activates below 2.5 V (VUVLOLO) and re-enables above 3.0 V (VUVLOHI), ensuring stable startup and shutdown behavior. Supply current is 7.7 mA (typical) with no load on VOUT. This narrow, optimized range supports robust operation in 3.3 V automotive domains without external regulation.
Is the A1319LUATN-5-T pin-compatible with other A1319 variants?
Yes - all A1319 variants in the UA (3-pin SIP) package share identical pinout: Pin 1 = VCC, Pin 2 = GND, Pin 3 = VOUT. The A1319LUATN-5-T matches A1319LUA-5-T electrically and mechanically, differing only in reel packaging (4,000 vs. 500 units). No PCB layout change is needed when substituting within the UA family, provided sensitivity and temperature coefficient requirements align.
Does the A1319LUATN-5-T support ratiometric operation, and why does it matter?
Yes, the A1319LUATN-5-T provides full ratiometric operation: its quiescent output (1.65 V), sensitivity (5 mV/G), and clamp voltages (0.33 V / 2.97 V) scale linearly with VCC. This eliminates need for separate voltage references in systems with varying supply rails - e.g., battery-fed ECUs - preserving measurement accuracy without recalibration when VCC drifts between 3.0 V and 3.63 V.
What is the meaning of "Not for New Design" status for the A1319LUATN-5-T?
"Not for New Design" means A1319LUATN-5-T is restricted to existing customer programs already using the part; Allegro no longer recommends it for newly initiated projects due to planned obsolescence. Samples are unavailable, and long-term supply is managed via last-time-buy notifications. Aetrix Electronics supports continuity for active programs but advises transition planning to alternatives like A1315 for future designs.
How does the A1319LUATN-5-T achieve stable performance across –40°C to 150°C?
The A1319LUATN-5-T achieves thermal stability via three integrated techniques: (1) factory-programmed temperature coefficients for both sensitivity and quiescent voltage output, (2) dynamic offset cancellation using a 400 kHz chopper scheme to suppress thermal/mechanical drift, and (3) BiCMOS process technology enabling precision amplification and on-chip tuning. These ensure ≤±20 mV QVO drift and ≤±2% sensitivity hysteresis after temperature cycling - critical for under-hood reliability.
A1319LUATN-5-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Series:
- -
- Package/Case:
- 3-SSIP
- Packaging:
- Bag
- Product Status:
- Active
- Technology:
- Hall Effect
- Axis:
- Single
- Output Type:
- Analog Voltage
- Sensing Range:
- -
- Voltage - Supply:
- 3V ~ 3.63V
- Current - Supply (Max):
- 10mA
- Current - Output (Max):
- 10mA
- Resolution:
- -
- Bandwidth:
- 20kHz
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Features:
- Temperature Compensated
- Supplier Device Package:
- 3-SIP
- Mounting Type:
- Through Hole
A1319LUATN-5-T FAQ
1.How can I place an order for A1319LUATN-5-T through Aetrix?
Please submit a Request for Quotation (RFQ) for A1319LUATN-5-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 A1319LUATN-5-T reliable?
The price and inventory of A1319LUATN-5-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for A1319LUATN-5-T is usually 5 days.
3.What payment methods are accepted for A1319LUATN-5-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for A1319LUATN-5-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for A1319LUATN-5-T?
A1319LUATN-5-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your A1319LUATN-5-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 A1319LUATN-5-T?
For technical support, including A1319LUATN-5-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your A1319LUATN-5-T requirements.
6.How does Aetrix verify that A1319LUATN-5-T is sourced from the original manufacturer or authorized distributors?
All A1319LUATN-5-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 A1319LUATN-5-T meets industry standards.
7.What is the process for return or replacement of A1319LUATN-5-T?
All A1319LUATN-5-T units undergo pre-shipment inspection (PSI). If there is an issue with A1319LUATN-5-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 A1319LUATN-5-T part is unused and in its original packaging.
Return procedure for A1319LUATN-5-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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