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Magnetic Single-Chip Encoder consumes just 3 µA.

Press Release Summary:

Housed in 4 x 4 mm QFN16 package, Model iC-TW11 allows for 10-bit angle detection, suitable for battery-buffered applications. With sampling rate of 10 Hz, average current consumption of 3 µA is obtained, and in standby mode between measuring cycles, idle current cuts back to 100 nA. Model iC-TW11 supports sampling rates of 4 kHz with activated filter and automatic amplifier gain for 10-bit resolution at maximum accuracy. Four-wire SPI interface can be operated with up to 16 MHz clock frequency.

Original Press Release:

Ultra Low Power 10-Bit Hall Encoder

Magnetic Single-Chip Encoder with a current consumption of only a few µA

The Ultra Low Power Single-Chip Hall Encoder iC-TW11 by iC-Haus allows for an energy-saving 10-bit angle detection and therefore targets for example battery-buffered applications. With a sampling rate of 10 Hz an average current consumption of typically 3 µA is obtained. In standby mode between measuring cycles the idle current cuts back to approximately 100 nA. In normal operation iC-TW11 supports sampling rates of 4 kHz with an activated filter and automatic amplifier gain for 10-bit resolution at maximum accuracy. A measuring cycle can be operated either via the SPI interface or via a separate trigger input by an external event.

A new position value is being signaled to the microcontroller via interrupt. The 4-wire SPI interface can be operated with up to 16 MHz clock frequency. The interrupt structure allows a daisy chain wiring of multiple iC-TW11. Therefore a controller can capture multiple rotation axes simultaneously.

Typical applications are:

- Battery-operated dynamic speed measurement in power tools

- Position and motor control in mobile robots or airplanes

- Wireless position measuring with “energy harvesting“ power supply

- Mobile servo motor and stepper motor controls

- Simple 10-bit encoder with adaptive current consumption

- Digital control knob with high resolution and ultra-cap buffering

- Manually adjustable digital potentiometer

- Control knob with pushbutton function through evaluation of the magnetic field strength

The evaluation board iC-TW11 EVAL TW11_1C comes with an USB-interface and GUI-Software for easy testing and configuration of this single-chip encoder iC.

At a voltage supply of 3.3 V (+/- 10 %) iC-TW11 operates in the extended industrial operating temperature range from -40 to +125 °C. The space requirement of the single-chip encoder iC is especially low due to the QFN16 package with 4 mm x 4 mm. Production volume can be ordered at $4.21 in quantities of 1.000pcs.

Further information can be found at

Introducing iC-Haus

iC-Haus GmbH is a leading, independent German manufacturer of standard iCs (ASSP) and customized ASiC semiconductor solutions with worldwide representation. The company has been active in the design, production, and sales of application-specific iCs for industrial, automotive, and medical applications for 30 years now.

The iC-Haus cell libraries in CMOS, bipolar, and BCD technologies are specifically suited to realize the design of sensor, laser/opto, and actuator ASiCs, amongst others. The iCs are assembled in standard plastic packages or using the iC-Haus chip-on-board technology to manufacture complete microsystems, multichip modules, and optoBGA/QFN in conjunction with sensors.

Further information is available at

If you have any queries, please contact:

Jonas Kupp

iC-Haus GmbH

Am Kuemmerling 18,

55294 Bodenheim, Germany

Tel.: +49 (6135) 9292-313

Fax: +49 (6135) 9292-192



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