PRODUCTS / MIXED-SIGNAL ICs
Mixed-Signal ICs
Integrated analog and digital signal processing for capacitive sensor applications.
AMAC mixed-signal ICs combine sensor excitation, analog signal acquisition, conversion and digital processing for precise capacitive sensor evaluation.
SENSOR EXCITATION
SIGNAL CONVERSION
DIGITAL PROCESSING
AM-CVC2D
MIXED-SIGNAL SENSOR IC
AM-CVC2D is a fully configurable mixed-signal IC for sensor excitation and charge evaluation. It processes signals from two external capacitive sensors and combines analog signal conditioning, A/D conversion and digital processing within one integrated device.
2 sensor channels
Two configurable charge-amplifier channels for external capacitive sensors.
14-bit A/D conversion
Integrated conversion of the conditioned analog sensor signals.
Programmable excitation
10-bit DAC and drivers for configurable sensor excitation voltages.
FIR filtering
Four programmable FIR filters with up to 31 selectable sampling points per filter.
Digital correction
Sensor characteristic-curve and temperature correction functions.
3.3 V
Supply
−10 to +150 °C
Operating temperature
14-bit
A/D conversion
2 channels
Capacitive sensor inputs
SENSOR INTERFACE
Excitation and charge evaluation for capacitive sensors.
AM-CVC2D provides the analog front end for two external capacitive sensors, combining configurable sensor excitation with programmable charge amplification and offset compensation.
SENSOR EXCITATION →
CAPACITIVE SENSOR →
CHARGE AMPLIFIER →
ANALOG SIGNAL
SENSOR EXCITATION:
Configurable excitation voltages for the connected capacitive sensors.
CHARGE AMPLIFICATION:
Two programmable charge-amplifier channels process the sensor signals.
SIGNAL PROCESSING
From analog sensor signal to digital data.
After the sensor signal is conditioned, AM-CVC2D converts and processes it digitally. Integrated correction, filtering and monitoring functions prepare the measurement data for further use in the system.
14-BIT ADC →
DIGITAL CORRECTION →
FIR FILTERING →
THRESHOLD DETECTION →
SPI / I²C
The integrated digital processing chain supports signal conversion, correction, configurable filtering and threshold evaluation before data is communicated through the serial interfaces.
SYSTEM INTEGRATION
Designed for integration into capacitive sensor systems.
AM-CVC2D connects external capacitive sensors with the surrounding electronics by combining configurable sensor interfaces, analog and digital outputs, serial communication and stored device configuration.
Sensor Connection
Two external capacitive sensors connect to the configurable charge-amplifier channels for signal evaluation.
Communication
SPI and I²C interfaces provide communication and configuration between AM-CVC2D and the surrounding system electronics.
Configuration
& Startup
PIntegrated EEPROM and Power-On Reset allow stored configuration data to be loaded automatically during startup.
SPI · I²C · EEPROM · Power-On Reset
DOWNLOADS
Technical documentation.
AM-CVC2D
Two-channel mixed-signal IC for capacitive sensor excitation and evaluation.
Datasheet ↓: Mixed-Signal ICsNeed additional technical documentation?
Contact AMAC →: Mixed-Signal ICsNEED HELP INTEGRATING AM-CVC2D?
Discuss your capacitive sensor application.
Talk to AMAC about sensor interfaces, signal conditioning, system integration or application-specific requirements.