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NPI Body

Broadcom AEAT-9933

10- to 14-Bit programmable angular magnetic encoder

The Broadcom AEAT-9933 is an angular magnetic rotary sensor that provides accurate angular measurement over a full 360 degrees of rotation. It is a sophisticated system that uses integrated Hall sensor elements with complex analog and digital signal processing within a single device.

Key features

5V and 3.3V operation
Selectable 10 bits up to 14 bits of absolute resolution
Flexible Incremental ABI resolution ranging from 1 to 1024CPR
Commutation angle output UVW 1pp to 32pp

Additional features

Further Features:

PWM output modes
User-programmable zero position, direction, index width and index position
Programmable hysteresis
Absolute output over 2-wire SSI, 3-wire SSI and 4-wire SPI. Each available in different mode.
Compact QFN-24 leads (4 mmx4 mm) package
RoHS compliant
INL angle correction for high accuracy

A simple two-pole magnet generates the necessary magnetic field by rotating it in perpendicular. Wide magnetic field sensor configurations allow On Axis (end of shaft) or Off Axis (side of shaft) modes in application. The Broadcom AEAT-9933 is a versatile solution capable of supporting a broad range of applications with its robust architecture to measure and deliver both absolute and incremental signals.

The absolute angle measurement provides an instant indication of the magnet's angular position with a selectable and one-time programmable resolution from 10 to 14 bits.

When selected, its positioning data is then represented in its digital form to be assessed through a standard SSI (parity) and SPI (with CRC and Parity option) communication protocol.

Where desired, users may also choose to receive its absolute angle position in PWM-encoded output signals (with CRC). The incremental positions are output as ABI and UVW signals. Wide user configurable resolutions are available from 1CPR and up to 1024CPR.of ABI signals and pole pairs from 1 to 32pole pairs (2 to 64 poles) for UVW commutation signals. For easy evaluation of the encoder IC, the HEDS-9933PRGEVB evaluation kit set (inclusive of the SPI programming kit, the pre-assembled AEAT-9933 evaluation boards and the on-axis magnets) is available for orders through normal Broadcom Sales Channels.

Applications

Brushless DC motor and stepper motor
Resolver and potentiometer replacement
Industrial automation and robotics
Industrial sewing machine and textiles equipment

Available tools

For easy evaluation of the encoder IC, the HEDS-9933PRGEVB evaluation kit set (inclusive of the SPI programming kit, the pre-assembled AEAT-9933 evaluation boards and the on-axis magnets) is available for orders through normal Broadcom Sales Channels.