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RHA Amplifier

RHA Electrophysiology Amplifier Chips

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RHA2000 Family
RHA2116 16-channel amplifier chip with unipolar inputs and common reference
RHA2216 16-channel amplifier chip with bipolar (differential) inputs
RHA2132 32-channel amplifier chip with unipolar inputs and common reference

Features
Fully integrated electrophysiology amplifiers; no off-chip filter capacitors required
On-chip analog multiplexer allows many amplifiers to share one external ADC
Low noise floor: 2 μV rms typical
Upper cutoff frequency set by external resistor; configurable from 10 Hz to 20 kHz
Lower cutoff frequency set by external resistor; configurable from 0.02 Hz to 1000 Hz
In situ electrode impedance measurement capability with additional external components

Applications
Miniaturized multi-channel headstages for neural recording
Low-power wireless headstages or backpacks for electrophysiology experiments
"Smart Petri dish" in vitro recording systems
Simultaneous recording of action potentials and local field potentials (LFPs) from microelectrodes
Portable multi-channel EKG or EMG monitoring systems


RHA2116 16-channel amplifier chip 

 QFN chip

 Part #A6112

 Bare die

 Part #K6002


RHA2216 16-channel amplifier chip 

 QFN chip

 Part #A6113

 Bare die

 Part #K6003


RHA2132 32-channel amplifier chip 

QFN chip

Part #A6114

 Bare die

 Part #K6004