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| 型号： | A3250JUATL |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PSSO3 |
| 封装： | ULTRA MINI, TO-92, SIP-3 |
| 文件页数： | 1/15页 |
| 文件大小： | 730K |
| 代理商： | A3250JUATL |
A3250 and A3251
A3250-DS Rev. 1
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VCC ......................................26.5 V
Reverse-Supply Voltage, VRCC........................–18 V
Zener Overvoltage, VZ.......................................30 V
Output Current, IOUT.........................................20 mA
Magnetic Flux Density, B .........................Unlimited
Operating Temperature
Ambient, TA, Range J................. –40C to 115C
Ambient, TA, Range L................–40C to 150C
Maximum Junction, TJ(max)........................165C
Storage Temperature, TS ..................–65C to 170C
On-chip protection against:
Supply transients
Output short-circuits
Reverse-battery condition
Field-Programmable, Chopper-Stabilized
Unipolar Hall-Effect Switches
Features and Benefits
The A3250 and A3251 are field-programmable, chopper-stabilized, unipolar Hall-
effect switches designed for use in high-temperature applications. These devices
use a chopper-stabilization technique to eliminate offset inherent in single-element
devices.
The A3250 and A3251 are externally programmable devices. The devices have a
wide range of programmability of the magnetic operate point (BOP) while the hys-
teresis remains fixed. This advanced feature allows for optimization of the sensor
switchpoint and can drastically reduce the effects of variations found in a produc-
tion environment, such as magnet and device placement tolerances.
These devices provide on-chip transient protection. A Zener clamp on the power
supply protects against overvoltage conditions on the supply line. These devices
also include short-circuit protection on the output.
The output of the A3250 switches LOW when subjected to a south-polarity mag-
netic field with a flux density that exceeds the threshold for BOP, and switches
HIGH when the field drops below the magnetic release point, BRP. The output of
the A3251 has the opposite polarity, switching HIGH in a south-polarity magnetic
field that BOP, and switching LOW when the field drops below BRP.
The other differences in the devices are the power-on state. The A3250 powers-on
in the HIGH state, while the A3251 powers-on in the LOW state.
These devices are available in a TO-92 three-lead ultra-mini SIP (Single In-line
Package), with either straight lead configuration, or formed and trimmed leads
for horizontal mounting.
1. VCC
2. GND
3. VOUT
Package UA, 3-pin SIP
Chopper stabilization for stable switchpoints
throughout operating temperature range
Externally programmable operate point
(through VCC pin)
On-board voltage regulator for 4.2 V to 24 V
operation
2
3
1
TL Option
Part Number
Package
TA
(C)
Bhys(typ)
(G)
VOUT
Power-On Running*
A3250JUA
A3250JUATL
Straight lead
Formed lead
–40 to 115
18
High
Low
A3250LUA
A3250LUATL
Straight lead
Formed lead
–40 to 150
13
A3251JUA
A3251JUATL
Straight lead
Formed lead
–40 to 115
18
Low
High
A3251LUA
A3251LUATL
Straight lead
Formed lead
–40 to 150
13
*In south polarity magnetic field of sufficient strength.
Use the following complete part numbers when ordering:
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相关代理商/技术参数 |
参数描述 |
|---|---|
| A3250LLT | 功能描述:IC SW HALL EFFECT UNI SOT-89 RoHS:否 类别:传感器，转换器 >> 磁性 - 霍尔效应，数字式开关，线性，罗盘 (IC) 系列:- 标准包装:1 系列:- 传感范围:20mT ~ 80mT 类型:旋转 电源电压:4.5 V ~ 5.5 V 电流 - 电源:15mA 电流 - 输出（最大）:- 输出类型:数字式，PWM，8.5 位串行 特点:可编程 工作温度:-40°C ~ 150°C 封装/外壳:20-SSOP（0.209"，5.30mm 宽） 供应商设备封装:20-SSOP 包装:Digi-Reel® 其它名称:AS5132-HSST-500DKR |
| A3250LLT-T | 功能描述:IC SW HALL EFFECT UNI SOT-89 RoHS:是 类别:传感器，转换器 >> 磁性 - 霍尔效应，数字式开关，线性，罗盘 (IC) 系列:- 标准包装:1 系列:- 传感范围:20mT ~ 80mT 类型:旋转 电源电压:4.5 V ~ 5.5 V 电流 - 电源:15mA 电流 - 输出（最大）:- 输出类型:数字式，PWM，8.5 位串行 特点:可编程 工作温度:-40°C ~ 150°C 封装/外壳:20-SSOP（0.209"，5.30mm 宽） 供应商设备封装:20-SSOP 包装:Digi-Reel® 其它名称:AS5132-HSST-500DKR |
| A3250LLTTR | 功能描述:IC SW HALL EFFECT UNI SOT-89 RoHS:否 类别:传感器，转换器 >> 磁性 - 霍尔效应，数字式开关，线性，罗盘 (IC) 系列:- 标准包装:1 系列:- 传感范围:20mT ~ 80mT 类型:旋转 电源电压:4.5 V ~ 5.5 V 电流 - 电源:15mA 电流 - 输出（最大）:- 输出类型:数字式，PWM，8.5 位串行 特点:可编程 工作温度:-40°C ~ 150°C 封装/外壳:20-SSOP（0.209"，5.30mm 宽） 供应商设备封装:20-SSOP 包装:Digi-Reel® 其它名称:AS5132-HSST-500DKR |
| A3250LLTTR-T | 功能描述:IC SW HALL EFFECT UNI SOT-89 RoHS:是 类别:传感器，转换器 >> 磁性 - 霍尔效应，数字式开关，线性，罗盘 (IC) 系列:- 标准包装:1 系列:- 传感范围:20mT ~ 80mT 类型:旋转 电源电压:4.5 V ~ 5.5 V 电流 - 电源:15mA 电流 - 输出（最大）:- 输出类型:数字式，PWM，8.5 位串行 特点:可编程 工作温度:-40°C ~ 150°C 封装/外壳:20-SSOP（0.209"，5.30mm 宽） 供应商设备封装:20-SSOP 包装:Digi-Reel® 其它名称:AS5132-HSST-500DKR |
| A3250LUA | 功能描述:IC SW HALL EFFECT UNI 3-SIP RoHS:否 类别:传感器，转换器 >> 磁性 - 霍尔效应，数字式开关，线性，罗盘 (IC) 系列:- 标准包装:1 系列:- 传感范围:20mT ~ 80mT 类型:旋转 电源电压:4.5 V ~ 5.5 V 电流 - 电源:15mA 电流 - 输出（最大）:- 输出类型:数字式，PWM，8.5 位串行 特点:可编程 工作温度:-40°C ~ 150°C 封装/外壳:20-SSOP（0.209"，5.30mm 宽） 供应商设备封装:20-SSOP 包装:Digi-Reel® 其它名称:AS5132-HSST-500DKR |
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