10-Bit Ultra Power Magnetic Absolute Rotary

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IC-TW11 QFN16-4X4

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Unit Price:$5.22
Minumum Qty: 1

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Product Information

The iC-TW11 is a single-chip magnetic rotary encoder for low-voltage (1.8 V – 3.3 V) and low-power end-of-shaft applications. It includes three Hall elements, automatic power management features, and offers 10-bit resolution in a space-saving 4 mm x 4 mm QFN16 package. Built-in automatic gain control (AGC) assures optimum analog-to-digital conversion under all conditions with no setup. A noise filter improves measurement stability, and can be disabled to reduce power consumption.

The iC-TW11 supports a maximum conversion rate of 4 kHz (4000 samples per second) with power consumption proportional to the conversion rate. Low power mode reduces current by a factor of 7 while increasing the maximum sampling rate to 20 kHz. Sampling is initiated over the SPI interface or via a dedicated pin for application versatility.

Communication and control of the iC-TW11 is via a 4-wire SPI interface and multiple devices can be chained together for efficient usage. Absolute position angle, angle-equivalent sine and cosine values, and the three raw Hall element voltages can all be read over the SPI interface allowing both simple and sophisticated applications to be implemented easily.


• Battery-powered portable equipment
• Digital potentiometers and front panel controls
• Servo or stepper motor feedback
• Assembly robots and autonomous vehicles
• Office equipment and household appliances

Symmetry Electronics (and its e-commerce division: SemiconductorStore.com) is an authorized iC-Haus distributor.


10-bit angle resolution
Split power supplies for 1.8 V I/O applications
Sampling initiated via SPI command or dedicated pin
Interrupt input and output for chaining multiple devices
Up to 4 kHz sampling frequency
21 A typical supply current at 10 Hz sampling frequency
Low power mode reduces current to 3 A at 10 Hz
Automatic sleep mode draws = 100 nA between samples
Standard 4-wire SPI communication
Automatic Hall array gain control (AGC)
Operational temperature range of -40 C to +125 C
Space-saving, RoHS compliant 4x4 mm QFN16 package

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