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參數(shù)資料
| 型號(hào)： | A1102ELHLT-T |
| 廠(chǎng)商： | Allegro MicroSystems, Inc. |
| 英文描述： | Continuous-Time Switch Family |
| 中文描述： | 連續(xù)時(shí)間開(kāi)關(guān)系列 |
| 文件頁(yè)數(shù)： | 7/11頁(yè) |
| 文件大?。?/td> | 428K |
| 代理商： | A1102ELHLT-T |
7
A1101-DS
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
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, B
OP
. After turn-on, the
output is capable of sinking 25 mA and the output voltage is
V
OUT(SAT)
. When the magnetic field is reduced below the release
point, B
RP
, the device output goes high (turns off). The differ-
ence in the magnetic operate and release points is the hysteresis,
B
hys
, 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 B
OP
and higher than B
RP
, allows an indeterminate output state. The
correct state is attained after the first excursion beyond B
OP
or
B
RP
.
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, V
CC
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, t
PO
, 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
O
B
R
B
HYS
V
CC
V
O
V
OUT(SAT)
S
S
B+
B–
V+
0
0
(A)
(B)
VCC
V
S
Sensor Output
GND
VOUT
R
L
A110x
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A1102ELHLT-T | 制造商:Allegro MicroSystems 功能描述:Hall Effect Switch IC |
| A1102ELHLX-T | 功能描述:IC HALL EFFECT SWITCH SOT23W 制造商:allegro microsystems, llc 系列:- 包裝:帶卷（TR） 零件狀態(tài):有效 功能:單極開(kāi)關(guān) 技術(shù):霍爾效應(yīng) 極化:南極 感應(yīng)范圍:24.5mT 跳閘，6mT 釋放 測(cè)試條件:-40°C ~ 85°C 電壓 - 電源:3.8 V ~ 24 V 電流 - 電源（最大值）:7.5mA 電流 - 輸出（最大值）:25mA 輸出類(lèi)型:開(kāi)路漏極 特性:- 工作溫度:-40°C ~ 85°C（TA） 封裝/外殼:SOT-23W 供應(yīng)商器件封裝:SOT-23W 標(biāo)準(zhǔn)包裝:10,000 |
| A1102EUA-T | 功能描述:IC SWITCH HALL EFFECT 3-SIP RoHS:是 類(lèi)別:傳感器，轉(zhuǎn)換器 >> 磁性 - 霍爾效應(yīng)，數(shù)字式開(kāi)關(guān)，線(xiàn)性，羅盤(pán) (IC) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類(lèi)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(lèi)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(chēng):AS5132-HSST-500DKR |
| A1102EUA-T | 制造商:Allegro MicroSystems 功能描述:Hall Effect Switch IC |
| A1102LLHLT-T | 功能描述:IC SWITCH HALL EFFECT SOT23W RoHS:是 類(lèi)別:傳感器，轉(zhuǎn)換器 >> 磁性 - 霍爾效應(yīng)，數(shù)字式開(kāi)關(guān)，線(xiàn)性，羅盤(pán) (IC) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類(lèi)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(lèi)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(chēng):AS5132-HSST-500DKR |
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