- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄11672 > MAX9921AUB+ (Maxim Integrated Products)IC SENSOR HALL EFFECT 10-MSOP PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX9921AUB+ |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 6/16頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC SENSOR HALL EFFECT 10-MSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 類型： | 霍爾效應(yīng)傳感器 |
| 輸入類型： | 電壓 |
| 輸出類型： | 邏輯 |
| 接口： | 2 線 |
| 電流 - 電源： | 1.3mA |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-µMAX |
| 包裝： | 管件 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)當(dāng)前第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)
MAX9921
Dual, 2-Wire Hall-Effect Sensor Interface
with Diagnostics
14
______________________________________________________________________________________
Applications Information
Hall-Effect Sensor Selection
The MAX9921 is optimized for use with 2-wire Hall-
effect switches or with 3-wire Hall-effect switches con-
nected as 2-wire (Figure 6). When using a 3-wire Hall
sensor, the resistor R is chosen so that the current
drawn by the Hall sensor crosses the MAX9921 current
threshold when the magnetic threshold of the Hall sen-
sor is exceeded.
Table 4 shows a partial list of Hall sensors (primarily 2-
wire) that can be used with the MAX9921. The DC
Electrical Characteristics Table gives tested IIH/IIL cur-
rent threshold limits for both a lower current range and
a higher current range which correspond to the selec-
tion of the RISET resistor value. This makes the
MAX9921 compatible with a wide array of 2- and 3-wire
Hall sensors.
Hall Input Bypass Capacitor
The MAX9921 is optimized for use with external protec-
tion 0.01F capacitors from both IN1 and IN2 to BAT.
These are essential to ensure robustness against auto-
motive transients. These capacitors may be tied to
GND instead of to BAT, but the connection to BAT is
recommended.
Low-Voltage Operation
To ensure correct operation of the Hall sensor at low
input voltages, it is important to consider the voltage
drop of the MAX9921 with low battery voltages. This
dropout voltage can be calculated using the formula:
VDROPOUT = IHALL x RPU
IHALL is the maximum current which must be supplied to
the Hall sensor and RPU is the internal resistance of the
MAX9921, nominally 50Ω (see the Input Pullup
Resistance vs. VBAT graph in the Typical Operating
Characteristics). As an example, assume the use of a
HAL573 sensor, which draws a maximum current of
17mA. The dropout voltage is then 850mV and the
approximate minimum voltage supplied to the Hall sensor
is 6V - 0.85V = 5.15V, which is higher than the minimum
operating voltage of 3.75V specified for the HAL573.
MAX9921
IN_
R
VCC
x_
GND
Figure 6. 3-Wire Hall-Effect Switches Configured as 2-Wire
PART
MANUFACTURER
WEBSITE
COMMENT
HAL573-6
Micronas
www.micronas.com
2-wire
HAL556/560/566
Micronas
www.micronas.com
2-wire
HAL581/584
Micronas
www.micronas.com
2-wire
A1140/1/2/3
Allegro
www.allegromicro.com
2-wire
A1180/81/82/83
Allegro
www.allegromicro.com
2-wire
Table 4. Partial List of Compatible Hall Switches
Note: The Hall switches listed above are supported by the MAX9921 using RISET = 63.4kΩ.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VI-BTL-IX-F3 | CONVERTER MOD DC/DC 28V 75W |
| VE-J3R-IY-F3 | CONVERTER MOD DC/DC 7.5V 50W |
| VI-BTL-IW-F2 | CONVERTER MOD DC/DC 28V 100W |
| VE-J3R-IY-F1 | CONVERTER MOD DC/DC 7.5V 50W |
| 413589-6 | CONN PLUG BNC RG-59DB CRIMP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9921AUB/V+ | 功能描述:接口 - 專用 Dual Hall-Effect Sensor Interface RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
| MAX9921AUB/V+C40 | 制造商:Maxim Integrated Products 功能描述:DUAL 2-WIRE HALL-EFFECT SENSOR INTERFACE WITH DIAGNOSTICS - Rail/Tube |
| MAX9921AUB/V+T | 功能描述:接口 - 專用 Dual Hall-Effect Sensor Interface RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
| MAX9921AUB/V+TC40 | 制造商:Maxim Integrated Products 功能描述:DUAL, 2-WIRE HALL-EFFECT SENSOR INTERFACE WITH DIAGNOSTICS - Tape and Reel |
| MAX9921AUB+ | 功能描述:接口 - 專用 Dual Hall-Effect Sensor Interface RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。