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| 型号： | MAX9921AUB+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/16页 |
| 文件大小： | 0K |
| 描述： | IC SENSOR HALL EFFECT 10-MSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 霍尔效应传感器 |
| 输入类型： | 电压 |
| 输出类型： | 逻辑 |
| 接口： | 2 线 |
| 电流 - 电源： | 1.3mA |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-µMAX |
| 包装： | 带卷 (TR) |
MAX9921
Dual, 2-Wire Hall-Effect Sensor Interface
with Diagnostics
______________________________________________________________________________________
13
14V
VIN_
IIN_
0V
VBAT - 500mV
8V
4mA/
s
11.5mA
0A
TIME
HALL INPUT
RECONNECTED
TO HALL SENSOR
Figure 5. Hall Input Re-Energized When Open Input is Reconnected to Hall Sensor
MAX9921 ACTIONS
FAULT
DESCRIPTION
CRITERION
ERR
OUTPUT
HALL INPUT RESPONSE
COMMENT/RECOVERY
VBAT < 6V
—
Asserted low
Shutoff current to both Hall
sensors
Both IN1 and IN2 are restarted with blanking
cycle when VBAT returns to proper range.
VBAT > 18V
—
Asserted low
Shutoff current to both Hall
sensors
Both IN1 and IN2 are restarted with blanking
cycle when VBAT returns to proper range.
Hall input open
IIN < 2mA
Asserted low
Shutoff current to
corresponding Hall sensor
When a Hall input is again loaded, terminating
open input condition, the Hall input are restarted
with blanking cycle.
Hall input shorted
to battery
VIN > VBAT due
to external
reverse-battery
protection
diode
Asserted low
Shutoff current to
corresponding Hall sensor
If a Hall input is pulled more than 1V above
VBAT, the input may back drive current into the
BAT supply and pull VBAT up with it. In this
condition, current levels in the Hall inputs should
never exceed 100mA. For this reason, it is
recommended that one or more MAX9921s be
powered together and share a reverse-polarity
diode separate from other circuitry.
Hall input shorted
to ground
IIN > 23mA
Asserted low
Shutoff current to
corresponding Hall sensor.
50A of pullup current is
sourced to IN1 or IN2 to
aid in troubleshooting.
A falling edge at DIAG initiates a restart with a
blanking cycle of any Hall input that has been
shut off due to a short to ground. See the Hall
Input Short-to-Ground section.
Table 3. Summary of Fault Protection and Recovery
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9921EVKIT+ | 功能描述:界面开发工具 MAX9921 Eval Kit RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| MAX9922ABT+T | 制造商:Maxim Integrated Products 功能描述:ULTRA-PRECISION, HIGH-SIDE CURRENT-SENSE AMPLIFIERS - Tape and Reel |
| MAX9922AUB+ | 功能描述:电流灵敏放大器 Current-Sense Amplifier RoHS:否 制造商:Texas Instruments 通道数量: 共模抑制比（最小值）:110 dB 输入补偿电压:80 uV 电源电压-最大:5.5 V 电源电压-最小:2.7 V 电源电流:350 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel |
| MAX9922AUB+T | 功能描述:电流灵敏放大器 Current-Sense Amplifier RoHS:否 制造商:Texas Instruments 通道数量: 共模抑制比（最小值）:110 dB 输入补偿电压:80 uV 电源电压-最大:5.5 V 电源电压-最小:2.7 V 电源电流:350 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel |
| MAX9922EUB+ | 功能描述:电流灵敏放大器 Current-Sense Amplifier RoHS:否 制造商:Texas Instruments 通道数量: 共模抑制比（最小值）:110 dB 输入补偿电压:80 uV 电源电压-最大:5.5 V 电源电压-最小:2.7 V 电源电流:350 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel |
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