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Specifications
Sensitivity:
1.35mV/Gs
Current - Supply:
7.7mA
Operating Temperature:
-40℃~+150℃
Voltage - Supply:
3V~3.63V
Mfr. Part #:
A1318LLHLT-1-T
Package:
SOT-23W
Key Attributes
Model Number:
A1318LLHLT-1-T
Product Description
Product Overview
The Allegro A1318 and A1319 are linear Hall-effect sensor ICs designed for high accuracy and small package size applications such as displacement and angular position sensing. These temperature-stable devices feature non-volatile memory for end-of-line optimization of sensitivity and quiescent voltage output (QVO). They provide a ratiometric voltage output proportional to the applied magnetic field, with QVO adjusted around 50% of the supply voltage. Ideal for automotive and industrial applications requiring high accuracy across an extended temperature range of 40C to 150C, these ICs are available in miniature surface-mount (SOT-23W) and through-hole (SIP) packages.
Product Attributes
- Brand: Allegro MicroSystems
- Material: Lead (Pb) free, 100% matte-tin leadframe plating
- Status: Not For New Design (NND) - Sale restricted to existing customer applications. Obsolescence probable in the near future. Samples no longer available.
Technical Specifications
| Model | Description | Sensitivity (typ) | Package | Packing |
|---|---|---|---|---|
| A1318 | Linear Hall-Effect Sensor IC with Analog Output | 1.35 mV/G (A1318LLHLX-1-T) 2.5 mV/G (A1318LLHLX-2-T, A1318LUATN-2-T, A1318LUA-2-T) | 3-pin SOT-23W (LH) 3-pin SIP (UA) | 10,000 pieces/reel (LHX) 3,000 pieces/reel (LHT) 4,000 pieces/reel (UATN) 500 pieces/bag (UA) |
| A1319 | Linear Hall-Effect Sensor IC with Analog Output | 5 mV/G (A1319LLHLX-5-T, A1319LUATN-5-T, A1319LUA-5-T) | 3-pin SOT-23W (LH) 3-pin SIP (UA) | 10,000 pieces/reel (LHX) 3,000 pieces/reel (LHT) 4,000 pieces/reel (UATN) 500 pieces/bag (UA) |
| Characteristic | Symbol | Test Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage | VCC | 3 | 3.3 | 3.63 | V | |
| Undervoltage Threshold (On) | VUVLOHI | TA = 25C and 150C | 3 | V | ||
| Undervoltage Threshold (Off) | VUVLOLO | TA = 25C and 150C | 2.5 | V | ||
| Supply Current | ICC | No load on VOUT | 7.7 | 10 | mA | |
| Power-On Time | tPO | TA = 25C, CL(PROBE) = 10 pF | 50 | s | ||
| Internal Bandwidth | BWi | Small signal 3 dB | 20 | kHz | ||
| Chopping Frequency | fC | TA = 25C | 400 | kHz | ||
| Output Voltage Clamp High | VCLPHIGH | TA = 25C, B = +400 G, RL = 10 k | 2.842 | 2.97 | 3.069 | V |
| Output Voltage Clamp Low | VCLPLOW | TA = 25C, B = 400 G, RL = 10 k | 0.264 | 0.33 | 0.462 | V |
| Sensitivity Temperature Coefficient | TCSens | Programmed at 150C, relative to 25C | 0.08 | 0.12 | 0.16 | %/C |
| Linearity Sensitivity Error | LinERR | 1.5 | % | |||
| Symmetry Sensitivity Error | SymERR | 1.5 | % | |||
| Ratiometry Quiescent Voltage Output Error | RatVOUT(Q) | Across supply voltage range (relative to VCC = 5 V) | 1.5 | % | ||
| Ratiometry Sensitivity Error | RatSens | Across supply voltage range (relative to VCC = 5 V) | 1.5 | % | ||
| Ratiometry Clamp Error | RatVOUTCLP | TA = 25C, across supply voltage range (relative to VCC = 5 V) | 1.5 | % | ||
| Typical Quiescent Voltage Output Drift Across Temperature Range | VOUT(Q) | TA = 150C | -15 (A1318LLHLX-1-T) -18 (A1318LLHLX-2-T) -13 (A1318LUA-2-T) -20 (A1319LLHLX-5-T) -15 (A1319LUA-5-T) | 5 (A1318LLHLX-1-T) -8 (A1318LLHLX-2-T) 0 (A1318LUA-2-T) -20 (A1319LLHLX-5-T) 0 (A1319LUA-5-T) | 5 (A1318LLHLX-1-T) -8 (A1318LLHLX-2-T) 13 (A1318LUA-2-T) 20 (A1319LLHLX-5-T) 15 (A1319LUA-5-T) | mV |
| Sensitivity Drift Due to Package Hysteresis | SensPKG | TA = 25C, after temperature cycling | 2 | % | ||
| Operating Ambient Temperature Range | TA | 40 | 150 | C | ||
| Maximum Junction Temperature | TJ(max) | 165 | C | |||
| Storage Temperature | Tstg | 65 | 170 | C |
Package Dimensions:
- LH (SOT-23W): 3-pin, miniature, low-profile surface-mount package (2 mm 3 mm 1 mm).
- UA (SIP): 3-pin, ultramini, single inline package (1.5 mm 4 mm 3 mm) for through-hole mounting.
Features and Benefits:
- 3.3 V supply operation
- QVO temperature coefficient programmed at Allegro for improved accuracy
- Miniature package options
- High-bandwidth, low-noise analog output
- High-speed chopping scheme minimizes QVO drift across operating temperature range
- Temperature-stable quiescent voltage output and sensitivity
- Precise recoverability after temperature cycling
- Output voltage clamps provide short-circuit diagnostic capabilities
- Undervoltage lockout (UVLO)
- Wide ambient temperature range: 40C to 150C
- Immune to mechanical stress
- Enhanced EMC performance for stringent automotive applications
2311151454_ALLEGRO-A1318LLHLT-1-T_C17502670.pdf
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