RHD2000 series electrophysiology chips in an 8mm x 8mm plastic QFN package and in bare die form.
See biological signals acquired using RHD2000 series chips.
Application note: Interfacing a microphone to Intan amplifier chips
Bond pad diagrams for RHD2216/RHD2132 bare die
Bond pad diagrams for RHD2164 bare die
Introduction to Intan amplifier chips
RHD2164 64-channel amplifier chip on circuit board. (Click for larger image.)
RHD2000 series digital electrophysiology interface chips are complete low-power biosignal acquisition systems. These patent-pending devices contain banks of low-noise amplifiers with programmable bandwidths and are suitable for a wide variety of biopotential monitoring and recording applications. (See actual biological signals acquired using RHD2000 series chips.)
Innovative circuit architecture combines amplifiers, reconfigurable analog and digital filters, a 16-bit ADC, and a multi-frequency electrode impedance measurement module onto a single silicon chip. Up to 64 recording electrodes are connected directly to one side of the chip, and digital data exits the other side on a standard SPI bus.
The upper and lower bandwidths of the amplifiers may be dynamically programmed by means of internal registers on each chip. This flexibility allows the chips to be optimized for many different types of electrophysiological signals including EKG, EMG, ECoG, EEG, neural spikes, and local field potentials.
By transforming weak electrode signals directly into a digital data stream, the RHD2000 replaces all analog instrumentation and digitizing circuitry in electrophysiology monitoring and acquisition systems. Intan Technologies provides an open-source USB/FPGA interface to stream digital data from multiple RHD2000 chips to a host computer in real time.
RHD2000 series chips are available in 8 mm x 8 mm plastic QFN surface-mount packages for solder assembly on printed circuit boards, and are also available in bare die form for chip-on-board assembly.
RHD2000 chips are now available directly from Intan Technologies. The RHD2000 evaluation system offers a quick way to evaluate the performance and operation of RHD2216, RHD2132, and RHD2164 chips with a plug-and-play USB interface and open-source multi-platform GUI software written in C++/Qt. Please sign up for our email newsletter to receive updates as new hardware components and software improvements are added to the evaluation system.
For a detailed description of chip functions, see the RHD2000 Series datasheet. Users of the older RHA2000 analog-output series of amplifier chips may wish to view this one-page comparison of the RHA2000 and RHD2000 devices.