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Broadcom AEDR 9940 102 three channel reflective incremental encoder offering selectable analog and digital outputs

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Broadcom AEDR 9940 102 three channel reflective incremental encoder offering selectable analog and digital outputs

Description : Angle, Linear Position Measuring RoHS

Mfr. Part # : AEDR-9940-102

Model Number : AEDR-9940-102

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Broadcom AEDR-9940 Three-Channel Reflective Incremental Encoder

The AEDR-9940 is a versatile three-channel reflective optical encoder offering selectable and programmable options for digital or analog differential outputs. It can interface directly with external interpolators in analog mode, providing Sine+, Sine-, Cos+, Cos-, I+, and I- outputs. In digital mode, it delivers two-channel (AB) quadrature outputs and a third channel digital index output, compatible with TTL signal processing circuitry for easy integration. Designed for a wide operating temperature range and small form factor, it is suitable for commercial, industrial, and automotive applications.

Product Attributes

Brand: Broadcom
Model: AEDR-9940
Type: Three-Channel Reflective Incremental Encoder
Output Options: Analog or Digital Differential
Package: Surface-mount leadless (4.0 mm x 4.0 mm x 0.7 mm)
Operating Temperature: -40C to 115C
Certifications: Not specified in the provided text.
Material: Not specified in the provided text.
Color: Not specified in the provided text.

Technical Specifications

Parameter	Value	Unit	Notes
High Encoding Resolution	198.4375	LPI (lines/inch)	or 7.8125 LP mm (lines/mm) or 0.128 mm (pitch)
Operating Voltage	3.3V, 5.0V	V	Supply
Supply Voltage (VCC)	3.0 - 3.6 (3.3V) / 4.5 - 5.5 (5.0V)	V	Ripple <100 mVpp
Current Consumption (ICC)	45	mA	Dependent on spatial position and rotational speed
Maximum Output Frequency (External Mode Selection)	0.25 - 4.00	MHz	Interpolation dependent (1X to 128X)
Maximum Output Frequency (SPI Programmable)	4.00	MHz	Interpolation 16X
Tangential Misalignment (ET)	0.35	mm	CPR dependent, with AutoCal variations
Radial Misalignment (ER)	0.35	mm
Code Wheel Gap (G)	0.85 - 2.35	mm	Typical for 625 CPR, variations for 128 CPR
Specular Reflectance (Rf)	60%	%	Reflective area
Non-reflective area	5%	%
Tri-state Voltage Threshold High	90	%VCC
Tri-state Voltage Threshold Low	10	%VCC
Tri-state Voltage Threshold Open	30 - 70	%VCC
Storage Temperature (TS)	-40 to 125	C
Operating Temperature (TA)	-40 to 115	C
Supply Voltage (VCC) Absolute Max	5.5	V
Pin Current (All I/O Outputs)	-20 to 20	mA

Applications

Closed-loop stepper motors
Small motors, actuators
Industrial printers
Robotics
Card readers
PTZ camera
Portable medical equipment
Optometric equipment
Linear stages

2512221405_Broadcom-AEDR-9940-102_C39751428.pdf

Broadcom AEDR 9940 102 three channel reflective incremental encoder offering selectable analog and digital outputs Images

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