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Programmable 25 bit single turn absolute encoder Broadcom AR25 AS01 for space constrained applications

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Programmable 25 bit single turn absolute encoder Broadcom AR25 AS01 for space constrained applications

Description : SMD Angle, Linear Position Measuring RoHS

Mfr. Part # : AR25-AS01

Model Number : AR25-AS01

Package : SMD

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Broadcom AR25 Smart Programmable 25-Bit Reflective Absolute Single-Turn Encoder

The Broadcom AR25 is a miniature absolute encoder ASIC designed for space-constrained applications. Utilizing advanced reflective optical-encoding theory, it offers high position accuracy with a correction algorithm superior to magnetic encoders. This one-chip solution supports variable overall diameters (30 mm to 60 mm) and through-hole solutions up to 30 mm. It provides user-programmable resolutions from 15-bit to 25-bit single-turn absolute outputs, as well as differential analog sine/cosine or digital incremental ABIUVW signals with configurable CPRs and pole-pairs. The AR25 features Auto-Calibration for simplified integration and supports integration with Broadcom's proprietary battery-less Energy Harvesting Multi-Turn (EHMT) solution, or other multi-turn solutions via a dedicated MT interface port. It operates on dual-mode 3.3V or 5V power supplies, suitable for handheld and portable devices, with an operating temperature range of 40C to 125C for industrial applications. The AR25 offers selectable communication protocols including Encoder Serial Link (ESL), RS485, SSI, BiSS-C, and SPI 4-wire.

Product Attributes

Brand: Broadcom
Product Series: AR25
Certifications: RoHS compliance

Technical Specifications

Parameter	Symbol	Min.	Typ.	Max.	Unit	Notes
Absolute Maximum Ratings
Storage Temperature	TS	40		125	C
Operating Temperature	TA	40		125	C
Supply Voltage	Vdd			7	V
ESD (HBM), JS-001-2014			2		kV
Moisture Sensitive Level	MSL		3			(Maximum floor life = 168h)
Recommended Operating Conditions
DC Supply Voltage (5V)	Vdd	4.5	5.0	5.5	V
DC Supply Voltage (3.3V)	Vdd	3.0	3.3	3.6	V
Ripple of Supply Voltage				100	mVpp	100 kHz
Output Current per Channel				5	mA
Single-ended Rise Time	tr		30		ns	CL = 50 pF RL = 1.2 k
Single-ended Fall Time	tf		30		ns	CL = 50 pF RL = 1.2 k
Ambient Temperature	Tamb		+25		C
Operational Temperature (PCB)	TPCB	40	+25	+125	C	PCB (FR4-4 layers) temperature
Storage Temperature	TS	40	+25	+125	C
Humidity	RH			85	%	Temperature = 40C
INC Operating Frequency				128	kHz	Velocity (rpm) CPR/60
Encoder Shaft Speed	SRPM			15,000	rpm	512 CPR (AR25)
Temperature Sensor Accuracy			3		C	At 125C
DC Characteristics
VDD Supply Current (3.3V)	IDD		65		mA
VDD Supply Current (5.0V)	IDD		65		mA
Absolute Single-Turn Resolution	STbits		15	25	bit	a. Maximum number of bits able to be set in the AR25.
Incremental Resolution			20		2^nmax CPR	nmax = 20
Protocol I/O Drive Strength	IDIO	5	20	40	mA	VDD = 3.3V/5V, Differential driver
Differential Transceiver Hysteresis	Vhys		100		mV	VDD = 3.3V/5V, 220 termination
Differential Transceiver Opening	Vopen	200			mV	VDD = 3.3V/5V
Differential Transceiver Voltage Peak-to-Peak	VPP		2		V	VDD = 3.3V/5V
Output High Voltage (3.3V)	VOH	2.4	3.3	3.6	V	No load
Output Low Voltage (3.3V)	VOL	0		0.4	V	No load
Input High Voltage (3.3V)	VIH	2		3.6	V
Input Low Voltage (3.3V)	VIL	0		1.4	V
Output High Voltage (5.0V)	VOH	4.4	5	5.5	V	No load

Applications

Robotic automation and engineering
Factory automation and drone
Medical and dentistry devices and equipment
High-accuracy portable and handheld devices
Miniature motor, servo motor, and linear actuator
Through-shaft motor, gear motor, and speed reducer

2510211446_Broadcom-AR25-AS01_C42962483.pdf

Programmable 25 bit single turn absolute encoder Broadcom AR25 AS01 for space constrained applications Images

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