Electronic Components Datasheet Search |
|
A1391 Datasheet(PDF) 10 Page - Allegro MicroSystems |
|
A1391 Datasheet(HTML) 10 Page - Allegro MicroSystems |
10 / 16 page Micro Power 3 V Linear Hall Effect Sensor ICs with Tri-State Output and User Selectable Sleep Mode A1391, A1392, A1393, and A1395 10 Allegro MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com Device Low-Power Functionality A139x are low-power Hall effect sensor ICs that are perfect for power sensitive customer applications. The current consumption of these devices is typically 3.2 mA, while the device is in the active mode, and less than 25 μA when the device is in the sleep mode. Toggling the logic level signal connected to the S¯¯L¯¯E¯¯E¯¯P¯ pin drives the device into either the active mode or the sleep mode. A logic low sleep signal drives the device into the sleep mode, while a logic high sleep signal drives the device into the active mode. In the case in which the VREF pin is powered before the VCC pin, the device will not operate within the specified limits until the supply voltage is equal to the reference voltage. When the device is switched from the sleep mode to the active mode, a time defined by tPON must elapse before the output of the device is valid. The device output transitions into the high impedance state approximately tPOFF seconds after a logic low signal is applied to the S¯¯L¯¯E¯¯E¯¯P¯ pin (see figure 1). If possible, it is recommended to power-up the device in the sleep mode. However, if the application requires that the device be powered on in the active mode, then a 10 kΩ resistor in series with the S¯¯L¯¯E¯¯E¯¯P¯ pin is recommended. This resistor will limit the current that flows into the S¯¯L¯¯E¯¯E¯¯P¯ pin if certain semiconductor junctions become forward biased before the ramp up of the volt- age on the VCC pin. Note that this current limiting resistor is not required if the user connects the S¯¯L¯¯E¯¯E¯¯P¯ pin directly to the VCC pin. The same precautions are advised if the device supply is powered-off while power is still applied to the S¯¯L¯¯E¯¯E¯¯P¯ pin. B field VCC VSLEEP ICC VOUT tPON tPON +B 0 –B tPOFF tPOFF HIGH IMPEDANCE HIGH IMPEDANCE HIGH IMPEDANCE Figure 1. A139x Timing Diagram |
Similar Part No. - A1391 |
|
Similar Description - A1391 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |