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參數(shù)資料
| 型號： | TLE4941C |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 霍爾效應(yīng)傳感器 |
| 英文描述： | Differential Two-Wire Hall Effect Sensor IC |
| 中文描述： | 差分兩線霍爾效應(yīng)傳感器IC |
| 文件頁數(shù)： | 2/11頁 |
| 文件大?。?/td> | 853K |
| 代理商： | TLE4941C |
TLE4941, TLE4941C
TLE4941 - TLE 4941C Data Sheet
Febrary 2002
2
Functional Description
The differential hall sensor IC detects the motion of ferromagnetic and permanent
magnet structures by measuring the differential flux density of the magnetic field. To
detect the motion of ferromagnetic objects the magnetic field must be provided by a
back biasing permanent magnet. Either south or north pole of the magnet can be
attached to the rear unmarked side of the IC package.
Magnetic offsets of up to +/- 20mT and device offsets are cancelled by a self-
calibration algorithm. Only a few transitions are necessary for self-calibration. After
the initial calibration sequence switching occurs when the input signal is crossing the
arithmetic mean of its max and min value. (E.g. zero-crossing for sinusoidal signals)
The ON and OFF state of the IC are indicated by
High
and
Low
current
consumption.
Circuit Description
The circuit is supplied internally by a 3V voltage regulator. An on-chip oscillator
serves as clock generator for the digital part of the circuit.
TLE4941 signal path is comprised of a pair of hall probes, spaced at 2.5mm, a
differential amplifier including a noise-limiting low-pass filter and a comparator
feeding a switched current output stage. In addition an offset cancellation feedback
loop is provided by a signal-tracking A/D converter, a digital signal processor (DSP)
and an offset cancellation D/A converter.
During the startup phase (un-calibrated mode) the output is disabled (I=I
Low
).
The differential input signal is digitized in the speed A/D converter and fed into the
DSP. The minimum and maximum values of the input signal are extracted and their
corresponding arithmetic mean value is calculated. The offset of this mean value is
determined and fed into the offset cancellation DAC.
After successful correction of the offset, the output switching is enabled
.
In running mode (calibrated mode) the offset correction algorithm of the DSP is
switched into a low-jitter mode, avoiding oscillation of the offset DAC LSB. Switching
occurs at zero-crossing. It is only affected by the (small) remaining offset of the
comparator and by the remaining propagation delay time of the signal path, mainly
determined by the noise-limiting filter. Signals below a defined threshold
B
Limit
are
not detected to avoid unwanted parasitic switching.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TLE4941-2C | Differential Two-Wire Hall Effect Sensor IC |
| TLE4942-2 | Differential Two-Wire Hall Effect Sensor IC |
| TLE4942 | Differential Two-Wire Hall Effect Sensor IC |
| TLE4942-2C | Differential Two-Wire Hall Effect Sensor IC |
| TLE4942C | Differential Two-Wire Hall Effect Sensor IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TLE4941CBAMA1 | 制造商:Infineon Technologies AG 功能描述:Hall Effect Sensor Monolithic 5V/9V/12V/15V/18V 2-Pin SSO Tape 制造商:Infineon Technologies AG 功能描述:MAGNETIC SENSOR IC'S - Ammo Pack 制造商:Infineon Technologies AG 功能描述:IC HALL EFFECT SENSOR ABS SSOP2 |
| TLE4941C-HT | 功能描述:IC HALL EFFECT SENSOR SSO-2 RoHS:是 類別:傳感器，轉(zhuǎn)換器 >> 磁性 - 霍爾效應(yīng)，數(shù)字式開關(guān)，線性，羅盤 (IC) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類型:旋轉(zhuǎn) 電源電壓:4.5 V ~ 5.5 V 電流 - 電源:15mA 電流 - 輸出（最大）:- 輸出類型:數(shù)字式，PWM，8.5 位串行 特點(diǎn):可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
| TLE4941HALA1 | 制造商:Infineon Technologies AG 功能描述:Hall Effect Sensor Monolithic 5V/9V/12V/15V/18V 2-Pin SSO Tape 制造商:Infineon Technologies AG 功能描述:MAGNETIC SENSOR IC'S - Ammo Pack 制造商:Infineon Technologies AG 功能描述:IC HALL EFFECT SENSOR PSSO-2-1 |
| TLE4941-HT | 功能描述:IC HALL EFFECT SENSOR SSO-2 RoHS:是 類別:傳感器，轉(zhuǎn)換器 >> 磁性 - 霍爾效應(yīng)，數(shù)字式開關(guān)，線性，羅盤 (IC) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類型:旋轉(zhuǎn) 電源電壓:4.5 V ~ 5.5 V 電流 - 電源:15mA 電流 - 輸出（最大）:- 輸出類型:數(shù)字式，PWM，8.5 位串行 特點(diǎn):可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
| TLE4941PLUSC | 功能描述:板機(jī)接口霍耳效應(yīng)/磁性傳感器 Differential Hall IC Wheel Speed Sensing RoHS:否 制造商:Honeywell 類型:Bipolar Hall-Effect Digital Position Sensor 工作電源電壓:3 V to 24 V 電源電流:3.5 mA 最大輸出電流:20 mA 工作點(diǎn)最小值/最大值:5 G, 55 G 最小/最大釋放點(diǎn)（Brp）:- 55 G, - 5 G 最大工作溫度:+ 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23 |
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