Intan Technologies, LLC: low-noise amplifier microchips for electrophysiology, EKG, EMG, EEG, ECoG, and neural recording headstages and bio instrumentation
RHA2000 series 16- and 32-channel amplifier chips in standard plastic QFN (Quad Flat pack, No leads) packages.
See biological signals acquired using RHA2000-series chips.
FAQ: Why is the gain of the RHA2000 Series ampifiers fixed at 200?
Bond pad diagrams for RHA2000 bare die.
Introduction to Intan amplifier chips.
RHA2000 Series multi-channel bioamplifier chips
Introduced in 2010, the RHA2000 Series Amplifier Arrays are low-power microchips from Intan Technologies. These single-chip devices contain 16 or 32 low-noise, low-power amplifiers with programmable bandwidths suitable for many bioinstrumentation monitoring and recording applications. RHA2000 series chips are available in standard 6 mm x 6 mm or 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 advanced chip-on-board assembly.
The RHA2000-EVAL board offers a quick way to evaluate the performance and operation of RHA2000 series chips with a plug-and-play USB interface and Windows software.
For a detailed description of chip functions, see the RHA2000 Series datasheet.
RHA2000 Family
- RHA2116 16-channel amplifier array with unipolar inputs and one common reference input.
- RHA2216 16-channel amplifier array with bipolar inputs.
- RHA2132 32-channel amplifier array with unipolar inputs and one common reference input.
RHA2000 Series Features
- Fully integrated amplifier arrays; no off-chip filter capacitors required.
- Low input-referred noise: 2 microvolts RMS.
- Low power operation: less than 500 microwatts per channel.
- On-chip high speed analog multiplexer allows many amplifiers to share one external A/D converter.
- Lower cutoff frequency of all amplifiers set by external resistor; adjustable from 0.02 Hz to 1.0 kHz.
- Upper cutoff frequency of all amplifiers set by external resistors; adjustable from 10 Hz to 20 kHz.
- True zero gain at DC rejects electrode offset voltages.
- In situ electrode impedance measurement capability.
RHA2000 Series Applications
- Miniaturized multi-channel headstages for neural or ECoG recording.
- Low-power wireless headstages or backpacks for electrophysiology experiments.
- "Smart Petri dish" in vitro recording systems.
- Simultaneous recording of spikes and local field potentials (LFPs) from microelectrodes.
- Portable multi-channel EEG or EMG recording systems.
- Wearable EKG monitors.