The two-channel nonius interpolation circuit GC-NIP is used to increase the resolution for absolute distance and angle measuring systems with 2 sinusoidal output signals (vernier signals) shifted by 90 ° and to calculate the absolute position of the sensor from the two vernier signals. One or two-channel incremental position or angle measuring systems can also be connected to the GC-NIP, which enables it to be used as a two-channel encoder. The signals from the sensors are subjected to an internal gain and offset control patented by AMAC and then interpolated up to 8192 times. When calculating the absolute position, resolutions of up to 22 bits can be achieved with 2-track vernier systems. The GC-NIP is designed for 3.3V interfaces on both the input and output sides. It contains six instrumentation amplifiers with adjustable gain factors. Sensors with a voltage interface and measuring bridges can be connected directly. Sensors with a current interface or photodiode arrays are adapted using simple external wiring. The IC can work with both single-ended and differential input signals. An adjustable analog low-pass filter reduces the noise of the sensor signals. In addition, a digital hysteresis can suppress the edge noise of the output signals at low input frequencies and at standstill. In the GC-NIP, the signal quality of the sensors is monitored using nine criteria. To calculate the vernier position, a set of sensor or scale-specific correction coefficients can be stored in the IC's EEPROM so that harmonics of the sinusoidal signals or inaccuracies in the measuring standard do not lead to errors in the vernier calculation. The correction coefficients are determined using a simple software-based calibration process. The GC-NIP is particularly suitable for use in motor feedback systems, as both absolute position and incremental ABZ signals are generated. The four implemented output interfaces (ABZ / SPI / SSI / BiSS) and other features, such as the options for calibrating the reference point, setting and saving the zero position or support in evaluating distance-coded reference marks, allow the GC-NIP to be used directly on industrial controls . The IC is configured application-specifically from an integrated EEPROM, via configuration inputs or via the serial interface (SPI / BiSS).

The interpolation circuit AM-IP4k serves to increase the resolution of incremental position and angular measuring systems with sinusoidal output signals. The input signals are subjected to a AMAC-patented internal gain and offset control and the signal period will be divided from 4 up to 4096 times. The ICs comprise three instrumentation amplifiers with adjustable gain factors. Incremental encoders which possess a voltage interface and measuring bridges up to 1Vpp can be connected directly. Sensors with current interface and photodiode-arrays are adapted by a simple external circuit. The IC operates with both single-ended or differential input signals. The noise of the sensor signals is prevented by a switching analog filter. Additionally, a digital hysteresis can suppress the edge noise of the output signals at low input frequencies and at standstill. The AM-IP4k is the first AMAC interpolator with implemented jitter suppression filter for ABZ outputs. The quality of the signals issued by the sensors is monitored in the ICs. For that purpose it is possible to activate 9 different error signals indicating the type of the error. For the calculation of the position a set of sensor or scale specific coefficients for a 360 degree correction (rotary encoder) and a signal shape correction (both linear and rotary encoder) can be placed in the EEPROM of the IC. In that way, harmonics of the sinusoidal signals or inaccuracies of the measuring scale do not lead to errors in the position value.
The three integrated output interfaces ABZ, SPI, SSI and further features like the multi stage trigger signal processing, integrated timer, integrated multiturn counter, the processing of distance coded reference marks, the possibility to adjust the reference mark as well as adjustment and storage of the zero position make the ICs suitable for direct use in industrial controls or in fast multi-channel positioning measuring systems. With these features the ICs are also prepared for use in absolute positioning measuring systems. The AM-IP4k can be configured according to specific applications using the integrated EEPROM or via the serial interface (SPI).

The interpolation circuit AM-AIP4k serves to increase the resolution of incremental position and angular measuring systems with sinusoidal output signals. The input signals are subjected to a AMAC-patented internal gain and offset control and the signal period will be divided from 4 up to 4096 times. The ICs comprise three instrumentation amplifiers with adjustable gain factors. Incremental encoders which possess a voltage interface and measuring bridges up to 1Vpp can be connected directly. Sensors with current interface and photodiode-arrays are adapted by a simple external circuit. The IC operates with both single-ended or differential input signals. The noise of the sensor signals is prevented by a switching analog filter. Additionally, a digital hysteresis can suppress the edge noise of the output signals at low input frequencies and at standstill. The AM-AIP4k is the first AMAC interpolator with implemented jitter suppression filter for ABZ outputs. The quality of the signals issued by the sensors is monitored in the ICs. For that purpose it is possible to activate 9 different error signals indicating the type of the error. For the calculation of the position a set of sensor or scale specific coefficients for a 360 degree correction (rotary encoder) and a signal shape correction (both linear and rotary encoder) can be placed in the EEPROM of the IC. In that way, harmonics of the sinusoidal signals or inaccuracies of the measuring scale do not lead to errors in the position value.
The three integrated output interfaces Analog output, ABZ, SPI, SSI and further features like the multi stage trigger signal processing, integrated timer, integrated multiturn counter, the processing of distance coded reference marks, the possibility to adjust the reference mark as well as adjustment and storage of the zero position make the ICs suitable for direct use in industrial controls or in fast multi-channel positioning measuring systems. With these features the ICs are also prepared for use in absolute positioning measuring systems. The AM-AIP4k can be configured according to specific applications using the integrated EEPROM or via the serial interface (SPI).

The interpolation circuits GC-IP201 and GC-IP201B are used to increase the resolution for incremental position and angle measuring systems with sinusoidal output signals. The signals from these incremental sensors are subjected to an internal gain and offset control patented by AMAC and then interpolated up to 256 times. The IC contains three instrumentation amplifiers to which sensors with voltage interfaces and measuring bridges can be connected directly. Sensors with a current interface or photodiode arrays are adapted using simple external wiring. An adjustable analog low-pass filter reduces the noise of the sensor signals. In addition, a digital hysteresis can suppress the edge noise of the output signals at low input frequencies and at standstill. In the IC, the signal quality of the sensors is monitored using nine criteria. The four implemented output interfaces ABZ, SPI, SSI, BiSS (only GC-IP201B) and other features such as multi-level trigger signal processing, integrated timer, integrated multiturn counter, the evaluation of distance-coded reference marks, which allow options for adjusting the reference point and for setting and saving the zero position the direct use of the IC on industrial controls or on very fast multi-channel position measuring systems. The IC is also prepared for use in absolute position measuring systems.