Description
The A1220, A1221, A1222, and A1223 Hall-effect sensor ICs
are extremely temperature-stable and stress-resistant devices
especially suited for operation over extended temperature ranges
to 150癈. Superior high-temperature performance is made
possible through dynamic offset cancellation, which reduces the
residual offset voltage normally caused by device overmolding,
temperature dependencies, and thermal stress. Each device
includes on a single silicon chip a voltage regulator, Hall-
voltage generator, small-signal amplifier, chopper stabilization,
Schmitt trigger, and a short-circuit protected open-drain output
to sink up to 25 mA. A south pole of sufficient strength turns
the output on. A north pole of sufficient strength is necessary
to turn the output off.
An onboard regulator permits operation with supply voltages
of 3 to 24 V. The advantage of operating down to 3 V is that
the device can be used in 3-V applications or with additional
external resistance in series with the supply pin for greater
protection against high voltage transient events.
Two package styles provide magnetically optimized packages
for most applications. Package type LH is a modified 3-pin
SOT23W surface mount package while UA is a three-pin ultra-
mini SIP for through hole mounting. Both packages are lead
(Pb) free, with 100% matte tin plated leadframes.
A1220-DS, Rev. 15
Features and Benefits
? Symmetrical latch switchpoints
? Resistant to physical stress
? Superior temperature stability
? Output short-circuit protection
? Operation from unregulated supply down to 3 V
? Reverse battery protection
? Solid-state reliability
? Small package sizes
Chopper Stabilized Precision Hall Effect Latches
Packages:
Functional Block Diagram
Not to scale
A1220, A1221, A1222, and A1223
3-pin SOT23W
(suffix LH)
(A1222
and A1223)
(A1220
and 1221)
3-pin SIP (suffix UA)
Regulator
GND
VCC
VOUT
Control
Current Limit
To All Subcircuits
Amp
Low-Pass
Filter
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相关PDF资料
A1242LUA-I2-T
IC LATCH HALL EFFECT 3-SIP
A1244LUA-I2-T
IC HALL EFFECT LATCH SIP-3
A1302KUA-T
IC SENSOR HALL EFFECT 3-SIP
A1323LLHLT-T
IC SENSOR HALL EFFECT SOT23W
A1351LKTTN-T
IC SENSOR HALL EFFECT 4-SIP
A1354KKT-T
IC SENSOR HALL EFFECT 4-SIP
A1356LKB-T
IC SENSOR HALL EFFECT 3 SIP
A1361LKTTN-T
IC HALL EFFECT SENSOR LN 4-SIP
相关代理商/技术参数
A1220LUA-T
制造商:Allegro MicroSystems 功能描述:Hall Effect Latch IC
A1220U
制造商:TECCOR 制造商全称:TECCOR 功能描述:solid state crowbar devices
A1220UA4LRP
功能描述:硅对称二端开关元件 4Chp 100/180V 50A RoHS:否 制造商:Bourns 转折电流 VBO:40 V 最大转折电流 IBO:800 mA 不重复通态电流: 额定重复关闭状态电压 VDRM:25 V 关闭状态漏泄电流（在 VDRM IDRM 下）: 保持电流（Ih 最大值）:50 mA 开启状态电压:5 V 关闭状态电容 CO:120 pF 最大工作温度:+ 150 C 安装风格:SMD/SMT 封装 / 箱体:DO-214AA
A1220UA4LTP
功能描述:硅对称二端开关元件 4Chp 100/180V 50A RoHS:否 制造商:Bourns 转折电流 VBO:40 V 最大转折电流 IBO:800 mA 不重复通态电流: 额定重复关闭状态电压 VDRM:25 V 关闭状态漏泄电流（在 VDRM IDRM 下）: 保持电流（Ih 最大值）:50 mA 开启状态电压:5 V 关闭状态电容 CO:120 pF 最大工作温度:+ 150 C 安装风格:SMD/SMT 封装 / 箱体:DO-214AA
A1220UA4LXX
制造商:LITTELFUSE 制造商全称:Littelfuse 功能描述:The series provides a specialized asymmetrical dual port overvoltage protection
A1220UA4RP
功能描述:硅对称二端开关元件 4Chp 100/180V 45A RoHS:否 制造商:Bourns 转折电流 VBO:40 V 最大转折电流 IBO:800 mA 不重复通态电流: 额定重复关闭状态电压 VDRM:25 V 关闭状态漏泄电流（在 VDRM IDRM 下）: 保持电流（Ih 最大值）:50 mA 开启状态电压:5 V 关闭状态电容 CO:120 pF 最大工作温度:+ 150 C 安装风格:SMD/SMT 封装 / 箱体:DO-214AA
A1220UA4TP
功能描述:硅对称二端开关元件 4Chp 100/180V 50A RoHS:否 制造商:Bourns 转折电流 VBO:40 V 最大转折电流 IBO:800 mA 不重复通态电流: 额定重复关闭状态电压 VDRM:25 V 关闭状态漏泄电流（在 VDRM IDRM 下）: 保持电流（Ih 最大值）:50 mA 开启状态电压:5 V 关闭状态电容 CO:120 pF 最大工作温度:+ 150 C 安装风格:SMD/SMT 封装 / 箱体:DO-214AA
A1220UB4LRP
功能描述:硅对称二端开关元件 4Chp 100/180V 80A RoHS:否 制造商:Bourns 转折电流 VBO:40 V 最大转折电流 IBO:800 mA 不重复通态电流: 额定重复关闭状态电压 VDRM:25 V 关闭状态漏泄电流（在 VDRM IDRM 下）: 保持电流（Ih 最大值）:50 mA 开启状态电压:5 V 关闭状态电容 CO:120 pF 最大工作温度:+ 150 C 安装风格:SMD/SMT 封装 / 箱体:DO-214AA