The AD7103 40-pin ASIC offers 12-channel capability and is built to sense presence or absence of motion, especially human motion. The AD7103 e-field (capacitance) sensing technology allows users to integrate the ASIC into applications not currently possible in a small footprint LFCSP (lead frame chip scale package) device. Thanks to its multi-channel capabilities, the device features three unique channels with four selectable inputs, which allows for 12 independent inputs. As a result, users can incorporate multiple high-bandwidth sensors of various functions via a single chip. The device’s 16-bit resolution ensures measurement down to 4af/rHz, enabling users to measure tiny movements and/or changes even in the presence of large background signals. Designed for mobile devices, the AD7103 consumes 8.5 mA in full operational mode from a power supply between 2.6 and 5.5 V. Each of the unit’s three independent channels can be powered down separately, and users can choose power management modes that reduce current consumption to below 10 mA. This single-chip, capacitive sensor features an onboard oscillator, ac-to-dc conversion, and industry-standard serial peripheral interface. To eliminate the cross coupling, or signal bleeding, between channels, all inputs are situated at virtual ground. This feature also allows engineers to use shielding without compromising signal strength. The AD7103 accepts sensors consisting of virtually any low-cost conductive material, including sprayed-on conductors, wire, tape, and filaments. The frequency, amplitude, phase, and gain of the device can be adjusted, making it ideally suited for a range of applications, such as cellular/mobile technology and PDAs. The AD7103 can also be used in sensor process control applications, sensing proximity, dielectric measurements, level, flow, pressure, and instrumentation. An application evaluation kit, which demonstrates the chip’s capabilities in a selected configuration for linear, 2D, or 3D applications, is available for $495. The kit includes the ASIC evaluation board, software tools, instructions, and hardware necessary to develop a prototype of specific applications. The AD7103 is priced at $7.60 each in quantities of 1,000.