Digital AFM Controller
The Kronos controller is a high performance AFM-controller developed by nano analytik GmbH, capable to work with “one or two plus n” piezoresistive AFM probes.
The AFM dual-channel controller is an effective AFM controller comprising the essential blocks for AFM/SPM applications. The all-in-one flexible architecture replaces the neccesity of combining different modules for building common AFM/SPM systems as well as various application specific instruments.
The controller features two identical channels which include all-digital lock-in amplifiers, DDS signal generators, PID controllers for Z-drive and sensor conditioning circuitries. The XY stage driving and sample approach are provided by special blocks integrated in the controller.
The controller combines a high-end analog front-end for signal conditioning and modular FPGA core with high-performance modules for signal processing and control.
A high-speed ethernet communication interface provides real-time data sampling and visualization using nano analytik’s proprietary PC software with а functional and convenient GUI.
- Two independant channels comprising: Lock-in amplifier, all digital, PID controller for Z-drive ,Direct Digital Syntesis (DDS) generator for cantilever drive and scan signals ,18-bit real noise free digital resolution
- XYZ drivers for 3-dimensional piezo stage (18-bit)
- Standard DC and Bipolar Stepper motor driver
- Feedback control of sensor electrical parameters
- Non-contact and contact measurement modes
- High speed Ethernet communication interface
- All parameters controllable from PC software
- Custom FPGA-based high speed design
- Resolution (Amplitude and Phase) 16-bit
- Time constant 0.5us to 100ms
- Input voltage noise density 2nV/Hz-1/2
- Resolution 18-bit
- Sampling rate 1MHz
- Generation of x-y- and z-scan signals
- Frequency range DC to 12MHz
- Resolution 0.001Hz
- Integrated PID-regulation of positioning-signals
- Additional modul for digitally controllable sample bias voltage (e.g. for lithography)
- Optional high voltage amplifier (-10…+150V) for sample biasing.
