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Programmable magnetic rotary encoder AMS AS5145B-HSSM with 12 bit resolution and 360 degree angular measurement

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Programmable magnetic rotary encoder AMS AS5145B-HSSM with 12 bit resolution and 360 degree angular measurement

Description : SSOP-16-208mil Angle, Linear Position Measuring RoHS

Mfr. Part # : AS5145B-HSSM

Model Number : AS5145B-HSSM

Package : SSOP-16-208mil

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Product Overview

The AS5145 is a 12-bit programmable magnetic rotary encoder designed for accurate angular measurement over a full 360-degree turn. This system-on-chip integrates Hall elements, analog front end, and digital signal processing. It requires only a simple two-pole magnet for operation, offering instant absolute angle indication with a resolution of 0.0879 (4096 positions per revolution). The digital data is available via serial bit stream (SSI) and PWM signal. It supports both 3.3V and 5V supply voltages, providing high reliability, durability, and user-programmable zero position. Its failure diagnostics capabilities monitor magnet placement and power supply loss. The AS5145 is ideal for motor applications with rational speeds up to 30,000 rpm and offers easy setup with Daisy Chain mode for multiple interconnected devices.

Product Attributes

Brand: ams
Certifications: AEC-Q100, grade 0 (Automotive Qualified)
Package: SSOP 16 (5.3mm x 6.2mm)
Temperature Range: -40C to 150C

Technical Specifications

Parameter	Condition	Min	Typ	Max	Unit	Comments
Operating Conditions
Ambient temperature	Version H/A/B	-40		150	C
Supply current			16	21	mA
DC supply voltage at pin VDD5V	5V operation	4.5	5.0	5.5	V
Voltage regulator output voltage at pin VDD3V3		3.0	3.3	3.6	V
DC supply voltage at pin VDD5V	3.3V operation (pin VDD5V and VDD3V3 connected)	3.0	3.3	3.6	V
Supply voltage at pin VDD3V3		3.0	3.3	3.6	V
Power-on reset thresholds On voltage (VDD3V3)	3.3V	1.37	2.2	2.9	V	300mV typ. hysteresis
Power-on reset thresholds Off voltage		1.08	1.9	2.6	V	300mV typ. hysteresis
Programming Conditions
Programming voltage	Voltage applied during programming	3.3		3.6	V
Programming voltage off level	Line must be discharged to this level	0		1	V
Programming current				100	mA
Programmed fuse resistance (log 1)	10A max. current @ 100mV	10k
Unprogrammed fuse resistance (log 0)	2mA max. current @ 100mV	50		100
DC Characteristics CMOS Schmitt-Trigger Inputs: CLK, CSn
High level input voltage	Normal operation	0.7 * VDD5V			V
Low level input voltage				0.3 * VDD5V	V
Schmitt Trigger hysteresis			1		V
Input leakage current	CLK only	-1		1	A
Pull-up low level input current	CSn only, VDD5V: 5.0V	-30		-100
DC Characteristics CMOS / Program Input: PDIO
High level input voltage		0.7 * VDD5V		VDD5V	V	VPROG (1)

2411220317_AMS-AS5145B-HSSM_C481877.pdf

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