Intan Technologies, LLC: low-noise amplifier microchips for electrophysiology, EKG, EMG, EEG, ECoG, and neural recording headstages and bio instrumentation

cable-style dual headstage adapter
Cable-style dual headstage adapter for use with RHD2000 amplifier boards and SPI interface cables.

Main Documentation:

RHD2000 dual headstage adapter datasheet

SPI interface cable/connector specification

Application note: Adapting SPI cables to a commutator

Supporting Documents:

RHD2000 evaluation system datasheet

RHD2000 recording system catalog

Pricing information

128-channel headstageTwo RHD2164 amplifier boards (one with an accelerometer) attached to a cable-style dual headstage adapter to create a 128-channel module using a single SPI interface cable. The flexibility of the dual headstage adapter permits varied physical configurations.

flex-style dual headstage adapterThe flex-style dual headstage adapter is fabricated on a flexible printed circuit board.

128-channel headstageTwo RHD2164 amplifier boards attached to a flex-style dual headstage adapter to create a 128-channel module using a single SPI interface cable.

RHD2000 Dual Headstage Adapters

The RHD2000 dual headstage adapters connect two amplifier boards to a single SPI interface cable, enabling high-density digital recording modules with up to 128 total channels (see photos below).

The cable-style dual headstage adapter (Part #C3442) splits the signals from an SPI interface cable to two RHD2000 amplifier boards. The adapter is approximately 8.7 cm long (see photos, left and below).

This newer adapter is more flexible and physically durable than the older flex-style dual headstage adapter (Part #C3440), which is fabricated on a flexible printed circuit board, allowing it to be folded accommodate a wide variety of electrode connector configurations (see photos below).

On either adapter, an SPI interface cable should be plugged into the center connector and RHD2000 amplifier boards should be attached to the left and right connectors, as shown in the photos below. Amplifier boards of different types may be combined. All RHD2000 amplifier boards (except the 128-channel board) and SPI interface cables are compatible with these devices.

Use of these adapters with daisy-chained SPI interface cables exceeding 6 feet (1.8 meters) in total length may require a minor modification of one amplifier board to maintain high fidelity of the digital data. These technical details are discussed in the RHD2000 dual headstage adapter datasheet.


This board is a component of the RHD2000 Evaluation System.

The operation of the USB interface board and amplifier boards are described in more detail in the RHD2000 evaluation system datasheet. All components of the system are shown in the RHD2000 recording system catalog. The evaluation system is built around our open-source Rhythm USB/FPGA interface.


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