World innovation: energy-efficient, space-saving, cost-cutting

Smart solenoid driver from ADI Trinamic with numerous innovative diagnostic options offers sensor-like functions and simplifies the development of cost-effective miniature actuators.

MAX22216 Solenoid-Driver

ADI Trinamic’s fully integrated MAX22216 simplifies design with numerous new features.  It is primarily intended to drive inductive loads such as on-off solenoid valves, DC motors, proportional valves, bi-stable valves, relays, etc. Each of the 4 half bridges can switch up to 1.7A rms or 3.2A peak at up to 36V. Thanks to the integrated current measurement, no external measuring resistors are necessary.
Advanced diagnostic functions are available to improve system reliability and enable predictive maintenance. These include the world first detection of plunger movement (DPM), inductance measurement, travel time measurement, open-load detection (OL), and real-time current monitoring through a serial SPI Interface. In addition the MAX22216 features a full set of protection circuits, including overcurrent protection (OCP), overtemperature protection (OVT), and undervoltage lockout (UVM). A fault indicator pin is asserted whenever faults are detected.

The MAX22216 half-bridges support two different use cases. In the first case, configuration settings can be entered through a serial peripheral interface (SPI) and can be changed at any time. Alternatively, settings can be stored in one-time programmable (OTP) registers, which are loaded at power-up. This enables stand-alone operations. Registers are user-programmable. The OTP writing procedure must be executed in a factory under well-controlled temperature and voltage conditions.

High-side/low-side single-ended drive operations and bridge-tied load (BTL) configurations are supported. Channel parallelization is also supported. Voltage control (VDR), current control (CDR), and mixed schemes are supported.

In VDR mode, the half-bridge output voltage is controlled. Supply variations are internally compensated.

In CDR mode, the half-bridge output current is controlled. The current is internally sensed and fed back to the controller for accurate closed-loop regulation. Proportional and integral gains can be configured to optimize steady-state errors and dynamic performance.

The MAX22216 integrate functions aimed to optimize solenoid and DC motor drive control. These include a two-level sequencer for power saving, drive signal ramp control (RAMP) for noise reduction, a dither function (DITH) to counteract the effects of static friction and hysteresis, a fast demagnetization feature (DC_H2L) to shorten on-off cycles, and a DC-Motor current limiter for limiting inrush and stall currents.

The MAX22216 can operate in ambient temperatures from -40°C to +125°C and is available in the 5x5mm TQFN32 package.

The MAX22216-EVKIT enables easy evaluation of the MAX22216 in combination with ADI Trinamic’s evaluation board system (Landungsbrücke, Eselsbrücke, TMCL-IDE) or as a standalone board.

Downloads & Links


MAX22216 productpage

MAX22216-EVKIT productpage

Solenoid Driver ICs


If you would like to know more about ADI Trinamic solenoid drivers, please contact:

Guido Gandolfo
Product Line Manager
Motion Control
+49 5424 2340-57

Streaming Adapter and CTU Streaming Demo

New tools from Cambridge IC for easy commissioning and evaluation !

Cambridge IC’s resonant inductive sensor technology enables absolute position detection of moving parts. With the help of the sensor circuit boards (PCBs), the linear, rotary, arcuate or two-dimensional position of the moving encoder (target) is measured. The evaluation is carried out by a sensor processor IC (CTU) that has an SPI interface. This is used for configuration, initiating the measurement or for forwarding the measurement results to a host.

Streaming Adapter

Cambridge IC has now introduced the new Streaming Adapter for communication via USB. Unlike the previous CTU-Adapter, this records the measurements via SPI with the maximum possible data rate. It efficiently makes the measurement results available via USB. These can then be evaluated, for example, with the help of PC software. In order to achieve the required high sampling rates, the Streaming Adapter is based on a Raspberry Pi with dual core. This acts as a host system for the CTU ICs (CAM204, CAM312, CAM502) connected via SPI. It is also possible to program the CTU ICs with new firmware using the Streaming Adapter. The Streaming Adapter software is written as sample code and is available upon request.




PC-Software: CTU Streaming Demo

For the evaluation of the resonant inductive sensor technology, Cambridge IC presents the new software CTU Streaming Demo. With the help of the new Streaming Adapter, this accesses the measured values ​​of the CTU ICs CAM204, CAM312 and CAM502.
The measured absolute position is displayed graphically on a 360° disc or ruler and numerically. In addition, all other relevant information such as amplitude and frequency are displayed.


Streaming Adapter | CAM204 | CAM312 | CAM502


Streaming_Adapter_Datasheet (PDF)
CTUStreamingDemo-V0.4.2 (ZIP)


If you would like to know more about Cambridge IC’s resonant inductive sensing technology, please contact:

Guido Gandolfo
Produkt Line Manager
Motion Control
+49 5424 2340-57