A1360, A1361,
and A1362
Amp
Regulator
Clock/Logic
Hall Element
Low-Pass
Filter
When using Hall-effect technology, a limiting factor for
switchpoint accuracy is the small signal voltage developed
across the Hall element. This voltage is disproportionally small
relative to the offset that can be produced at the output of the
Hall device. This makes it difficult to process the signal while
maintaining an accurate, reliable output over the specified oper-
ating temperature and voltage ranges.
Chopper stabilization is a unique approach used to minimize
Hall offset on the chip. The patented Allegro technique, namely
Dynamic Quadrature Offset Cancellation, removes key sources
of the output drift induced by thermal and mechanical stresses.
This offset reduction technique is based on a signal modulation-
demodulation process.
The undesired offset signal is separated from the magnetic field-
induced signal in the frequency domain, through modulation.
The subsequent demodulation acts as a modulation process for
the offset, causing the magnetic field-induced signal to recover
its original spectrum at base band, while the dc offset becomes
a high-frequency signal. The magnetic-sourced signal then can
pass through a low-pass filter, while the modulated dc offset is
suppressed. The chopper stabilization technique uses a 210 kHz
high frequency clock.
For demodulation process, a sample and hold technique is used,
where the sampling is performed at twice the chopper frequency
(420 kHz). This high-frequency operation allows a greater
sampling rate, which results in higher accuracy and faster signal-
processing capability. This approach desensitizes the chip to the
effects of thermal and mechanical stresses, and produces devices
that have extremely stable quiescent Hall output voltages and
precise recoverability after temperature cycling. This technique
is made possible through the use of a BiCMOS process, which
allows the use of low-offset, low-noise amplifiers in combination
with high-density logic integration and sample-and-hold circuits.
Concept of Chopper Stabilization Technique
Typical Application Drawing
Chopper Stabilization Technique
GND
VOUT
FILTER
A136x
VCC
V+
0.1 糉
C
BYPASS
C
FILTER
C
L
Low-Noise Programmable Linear Hall Effect Sensor ICs with
Adjustable Bandwidth (50 kHz Maximum) and Analog Output
13
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
A1374EKB-T
IC SENSOR HALL EFFECT PREC 3-SIP
A1422LK
IC SENSOR HALL EFFECT AC 4-SIP
A1425LK
IC SENSOR HALL EFFECT AC 4-SIP
A1645LK-I2
IC SENSOR HALL EFFECT AC 4-SIP
A3230LUA-T
IC SW HALL EFFECT CHOPPER 3-SIP
A3241LUA-T
IC SWITCH HALL EFFECT 3-SIP
A3245LLHLT-T
IC SW HALL EFFECT OMNI SOT23W
A3251LUA-T
IC SW HALL EFFECT UNI 3-SIP
相关代理商/技术参数
A1362LKTTN-T
功能描述:IC HALL EFFECT SENSOR LN 4-SIP 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
A1363LKTTN-10-T
功能描述:IC HALL SENSOR 6.4-14MV/G 4SIP 制造商:allegro microsystems, llc 系列:- 包装:剪切带（CT） 零件状态:有效 类型:线性 技术:霍尔效应 轴:单路 感应范围:- 电压 - 电源:4.5 V ~ 5.5 V 电流 - 电源（最大值）:15mA 电流 - 输出（最大值）:10mA 输出类型:模拟电压 分辨率:- 带宽:120kHz 工作温度:-40°C ~ 150°C（TA） 特性:可编程，温度补偿 封装/外壳:4-SIP 模块 供应商器件封装:4-SIP 标准包装:1
A1363LKTTN-1-T
功能描述:IC HALL SENSOR 0.6-1.3MV/G 4SIP 制造商:allegro microsystems, llc 系列:- 包装:剪切带（CT） 零件状态:有效 类型:线性 技术:霍尔效应 轴:单路 感应范围:- 电压 - 电源:4.5 V ~ 5.5 V 电流 - 电源（最大值）:15mA 电流 - 输出（最大值）:10mA 输出类型:模拟电压 分辨率:- 带宽:120kHz 工作温度:-40°C ~ 150°C（TA） 特性:可编程，温度补偿 封装/外壳:4-SIP 模块 供应商器件封装:模块 标准包装:1
A1363LKTTN-2-T
功能描述:IC HALL SENSOR 1.3-2.9MV/G 4SIP 制造商:allegro microsystems, llc 系列:- 包装:剪切带（CT） 零件状态:有效 类型:线性 技术:霍尔效应 轴:单路 感应范围:- 电压 - 电源:4.5 V ~ 5.5 V 电流 - 电源（最大值）:15mA 电流 - 输出（最大值）:10mA 输出类型:模拟电压 分辨率:- 带宽:120kHz 工作温度:-40°C ~ 150°C（TA） 特性:可编程，温度补偿 封装/外壳:4-SIP 模块 供应商器件封装:4-SIP 标准包装:1
A1363LKTTN-5-T
功能描述:IC HALL SENSOR 2.9-6.4MV/G 4SIP 制造商:allegro microsystems, llc 系列:- 包装:剪切带（CT） 零件状态:有效 类型:线性 技术:霍尔效应 轴:单路 感应范围:- 电压 - 电源:4.5 V ~ 5.5 V 电流 - 电源（最大值）:15mA 电流 - 输出（最大值）:10mA 输出类型:模拟电压 分辨率:- 带宽:120kHz 工作温度:-40°C ~ 150°C（TA） 特性:可编程，温度补偿 封装/外壳:4-SIP 模块 供应商器件封装:4-SIP 标准包装:1
A1363LLUTR-10-T
功能描述:IC HALL EFFECT SENSOR LN 8TSSOP 制造商:allegro microsystems, llc 系列:- 包装:剪切带（CT） 零件状态:有效 类型:线性 技术:霍尔效应 轴:单路 感应范围:- 电压 - 电源:4.5 V ~ 5.5 V 电流 - 电源（最大值）:15mA 电流 - 输出（最大值）:10mA 输出类型:模拟电压 分辨率:- 带宽:120kHz 工作温度:-40°C ~ 150°C（TA） 特性:可编程，温度补偿 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 供应商器件封装:8-TSSOP 标准包装:1
A1363LLUTR-1-T
功能描述:IC HALL EFFECT SENSOR LN 8TSSOP 制造商:allegro microsystems, llc 系列:- 包装:剪切带（CT） 零件状态:有效 类型:线性 技术:霍尔效应 轴:单路 感应范围:- 电压 - 电源:4.5 V ~ 5.5 V 电流 - 电源（最大值）:15mA 电流 - 输出（最大值）:10mA 输出类型:模拟电压 分辨率:- 带宽:120kHz 工作温度:-40°C ~ 150°C（TA） 特性:可编程，温度补偿 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 供应商器件封装:8-TSSOP 标准包装:1
A1363LLUTR-2-T
功能描述:IC HALL EFFECT SENSOR LN 8TSSOP 制造商:allegro microsystems, llc 系列:- 包装:剪切带（CT） 零件状态:有效 类型:线性 技术:霍尔效应 轴:单路 感应范围:- 电压 - 电源:4.5 V ~ 5.5 V 电流 - 电源（最大值）:15mA 电流 - 输出（最大值）:10mA 输出类型:模拟电压 分辨率:- 带宽:120kHz 工作温度:-40°C ~ 150°C（TA） 特性:可编程，温度补偿 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 供应商器件封装:8-TSSOP 标准包装:1