A17502POKATN-PDTUOKW-A / Allegro MicroSystems

A17502POKATN-PDTUOKW-A Datasheet with Chat AI

Hello, Please ask a question about A17502POKATN-PDTUOKW-A Datasheet

# Example questions: ➢ What is the typical value for package thermal resistance (rθja) as specified in the datasheet?
➢ What is the defined relationship between δbdiff(pk-pk) and twindow for acceptable magnetic signal variation, as described in the datasheet?
➢ What is the minimum operating frequency (fop) for the -p output protocol?

Part No.	A17502POKATN-PDTUOKW-A
Manufacturer	ALLEGRO
Size	2Mb
Pages	22 pages
Description	Dual Output Narrow Pitch Differential Speed and Direction Sensor IC

Datasheet Summary with AI

1. Overview:

· Device: A17502 is a dual-output differential speed and direction sensor IC. It's designed for applications requiring detection of rotational speed and direction.
· Narrow Pitch: It's a compact device for space-constrained applications.

2. Key Features & Benefits:

· Differential Sensing: Detects both rotational speed and direction using a differential magnetic field.
· Multiple Output Protocols: Supports various output protocols (-S, -V, -W, -xQ, -xD, -P) to suit different application needs.
· Flexible Operating Frequency: Supports a wide range of operating frequencies.
· Robustness: Designed to handle varying magnetic signal conditions.
· Compact Size: Designed for space-constrained applications.

3. Operating Conditions/Parameters:

· Supply Voltage (VCC): Not explicitly stated, but implied to be 5V (used in characterization).
· Pull-Up Resistor (RPULLUP): 1 kΩ (used in characterization).
· Load Capacitor (CLOAD): 2.2 nF (used in characterization).
· Operating Frequency (fOP): 0 - 40 kHz (-S output), 0 - 20 kHz (-V and -W output), 0 - 9 kHz (-P output, forward), 0 - 6 kHz (-P output, reverse).
· Differential Magnetic Input (BDIFF):
* 30-40 G for -xD output at fOP ≤ 20 kHz.
* 40 G for -xD output at fOP > 20 kHz.
* 100 G for -xQ output.
· Magnetic Input Variation Window (TWINDOW): 8 TCYCLES.
· Operating Magnetic Signal Variation (ΔBDIFF(pk-pk)): 0.6 - 2.

4. Output Protocols & Characteristics (Selection Impacts Parameters):

· -S Output: General purpose speed output.
· -V & -W Outputs: Directional outputs.
· -xQ Output: Simple direction output.
· -xD Output: Sophisticated direction output that adjusts for signal imperfections.
· -P Output: Pulse output for speed measurement.

5. Thermal Characteristics:

· Package Thermal Resistance (RθJA): 177 °C/W (single-sided PCB with limited copper).

6. Important Definitions:

· TCYCLE: Target cycle - Amount of rotation that moves one tooth and valley across the sensor.
· BDIFF: Differential magnetic flux density.
· BDIFF(pk-pk): Peak-to-peak differential magnetic flux density.
· TWINDOW: Time window within which magnetic signal variation is allowed.

7. Characterization Notes:

· Characterization plots are provided, but require careful review and understanding of the associated graphs and conditions. They are representative of averaged results.