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參數(shù)資料
| 型號： | A1101ELHLT-T |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Continuous-Time Switch Family |
| 中文描述： | 連續(xù)時間開關(guān)系列 |
| 文件頁數(shù)： | 9/11頁 |
| 文件大?。?/td> | 428K |
| 代理商： | A1101ELHLT-T |
7
A1101-DS
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
Continuous-Time Switch Family
A1101, A1102, A1103, A1104, and A1106
Functional Description
OPERATION
The output of these devices switches low (turns on) when a
magnetic field (south polarity) perpendicular to the Hall sen-
sor exceeds the operate point threshold, BOP. After turn-on, the
output is capable of sinking 25 mA and the output voltage is
VOUT(SAT). When the magnetic field is reduced below the release
point, BRP, the device output goes high (turns off). The differ-
ence in the magnetic operate and release points is the hysteresis,
Bhys, of the device. This built-in hysteresis allows clean switch-
ing of the output, even in the presence of external mechanical
vibration and electrical noise.
Powering-on the device in the hysteresis region, less than BOP
and higher than BRP, allows an indeterminate output state. The
correct state is attained after the first excursion beyond BOP or
BRP.
CONTINUOUS-TIME BENEFITS
Continuous-time devices, such as the A110x family, offer the
fastest available power-on settling time and frequency response.
Due to offsets generated during the IC packaging process,
continuous-time devices typically require programming after
packaging to tighten magnetic parameter distributions. In con-
trast, chopper-stabilized switches employ an offset cancellation
technique on the chip that eliminates these offsets without the
need for after-packaging programming. The tradeoff is a longer
settling time and reduced frequency response as a result of the
chopper-stabilization offset cancellation algorithm.
The choice between continuous-time and chopper-stabilized
designs is solely determined by the application. Battery manage-
ment is an example where continuous-time is often required. In
these applications, VCC is chopped with a very small duty cycle
in order to conserve power (refer to figure 2). The duty cycle
is controlled by the power-on time, tPO, of the device. Because
continuous-time devices have the shorter power-on time, they
are the clear choice for such applications.
For more information on the chopper stabilization technique,
refer to Technical Paper STP 97-10, Monolithic Magnetic Hall
Sensor Using Dynamic Quadrature Offset Cancellation and
Technical Paper STP 99-1, Chopper-Stabilized Amplifiers with a
Track-and-Hold Signal Demodulator.
Figure 1. Switching Behavior of Unipolar Switches. On the horizontal axis, the B+ direction indicates increasing south polarity magnetic field
strength, and the B– direction indicates decreasing south polarity field strength (including the case of increasing north polarity). This behavior can
be exhibited when using a circuit such as that shown in Panel B.
B
OP
B
RP
BHYS
VCC
V
OUT
VOUT(SAT)
Switch
to
Low
Switch
to
High
B+
B–
V+
0
(A)
(B)
VCC
VS
Sensor Output
GND
VOUT
RL
A110x
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A1101ELHLT-T | 制造商:Allegro MicroSystems 功能描述:Hall Effect IC Operate Point Typ.:100Gau |
| A1101ELHLX-T | 制造商:Allegro MicroSystems LLC 功能描述:IC HALL EFFECT SWITCH SOT23W 制造商:Allegro MicroSystems LLC 功能描述:CONTINUOUS TIME UNIPOLAR SWITCH |
| A1101EUA-T | 功能描述:IC SWITCH HALL EFFECT 3-SIP 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: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 |
| A1101EUA-T | 制造商:Allegro MicroSystems 功能描述:Hall Effect IC Operate Point Typ.:100Gau |
| A1101EU-T | 制造商:Allegro MicroSystems LLC 功能描述: |
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