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參數(shù)資料
| 型號： | A1351LKTTN-T |
| 廠商： | Allegro Microsystems Inc |
| 文件頁數(shù)： | 2/24頁 |
| 文件大?。?/td> | 663K |
| 描述： | IC SENSOR HALL EFFECT 4-SIP |
| 產(chǎn)品培訓(xùn)模塊： | Current Sensor |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 傳感范圍： | 0.055% ~ 0.095% DC/G |
| 類型： | 線性 - 單極，雙極 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 電流 - 電源： | 10mA |
| 電流 - 輸出（最大）： | 1mA |
| 輸出類型： | 數(shù)字，推挽式 |
| 特點： | 高精度 |
| 工作溫度： | -40°C ~ 125°C |
| 封裝/外殼： | 4-SIP |
| 供應(yīng)商設(shè)備封裝： | 4-SIP |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 產(chǎn)品目錄頁面： | 1139 (CN2011-ZH PDF) |
| 其它名稱： | 620-1228-6 |
Description
The A1351 device is a high precision, programmable linear Hall
effect sensor IC with a pulse width modulated (PWM) output.
The duty cycle, D, of the PWM output signal is proportional
to an applied magnetic field. The A1351 device converts an
analog signal from its internal Hall element to a digitally
encoded PWM output signal. The coupled noise immunity of
the digitally encoded PWM output is far superior to the noise
immunity of an analog output signal. A simple RC network
can be used to convert the digital PWM signal back to analog
signal.
The BiCMOS, monolithic circuit inside of the A1351 integrates
a Hall element, precision temperature-compensating circuitry
to reduce the intrinsic sensitivity and offset drift of the Hall
element, a small-signal high-gain amplifier, proprietary
dynamic offset cancellation circuits, and PWM conversion
circuitry. The dynamic offset cancellation circuits reduce
the residual offset voltage of the Hall element. Hall element
offset is normally caused by device over molding, temperature
dependencies, and thermal stress. The high frequency offset
cancellation (chopping) clock allows for a greater sampling
rate, which increases the accuracy of the output signal and
results in faster signal processing capability.
Features and Benefits
" Pulse width modulated (PWM) output provides increased noise
immunity compared to an analog output
" 1 mm case thickness provides greater coupling for current
sensing applications
" Push/pull output
" Customer-programmable offset and sensitivity
" Factory-programmed 0%/癈 Sensitivity Temperature Coefficient
" Programmability at end-of-line
" Selectable unipolar or bipolar quiescent duty cycles
" Selectable sensitivity range between 0.055% and 0.095% D/G
" Temperature-stable quiescent duty cycle output and sensitivity
" Precise recoverability after temperature cycling
" Output duty cycle clamps provide short circuit diagnostic
capabilities
" Optional 50% D calibration test mode at device power-up
" Wide ambient temperature range: 40癈 to 125癈
" Resistant to mechanical stress
A1351
A1351-DS, Rev. 4
High Precision Linear Hall Effect Sensor IC
with a Push/Pull, Pulse Width Modulated Output
Functional Block Diagram
Continued on the next page&
Package: 4 pin SIP (suffix KT)
Not to scale
VCC
V+
PWMOUT/
Programming
GND
V
REG
C
BYPASS
1
2
2
1
Temperature
Compensation
Chopper
Switches
PWM
Frequency Trim
Signal
Recovery
PWM Carrier
Generation
PWM
Modulation
Logic with
Push-Pull
Output
Regulator
Signal
Conditioning
% Duty Cycle
Temperature
Coefficient
% Duty
Cycle
Sensitivity
Trim
Amp
1 mm case thickness
相關(guān)PDF資料 |
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| A1374EKB-T | IC SENSOR HALL EFFECT PREC 3-SIP |
| A1422LK | IC SENSOR HALL EFFECT AC 4-SIP |
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