Hardware

Systems

High Impedance Headstages

TDT’s high impedance headstages are designed for extracellular neurophysiology using silicon electrodes, metal microelectrodes or microwire arrays. Each headstage offers excellent signal-to-noise (~5 μV rms noise floor) and connects directly to a Medusa preamplifier. Acute headstages include a holding rod allowing them to be attached to a micromanipulator. Chronic headstages are designed to attach directly to implanted electrodes in awake, behaving preparations.

Number of Channels	Part #	Preparations	Gain	Input Connector	Mates with…
64	NN64AC	acute	1x	40-pin	2x Samtec MOLC header
32	NN32AC	acute	1x	40-pin	Samtec MOLC header
16	RA16AC	acute	1x	18-pin Dip	0.5 mm pins
16	RA16AC4	acute	4x	18-pin Dip	0.5 mm pins
16	RA16CH	chronic	1x	18-pin Nano	Omnetics Nano-pin connector
16	LP16CH	chronic	1x	18-pin Nano	Omnetics Nano-pin connector
16	SH16	acute (switchable)	1x	18-pin Dip	0.5 mm pins
4	RA4AC1	acute	1x	6-pin	0.76 mm pins
4	RA4AC4	acute	4x	6-pin	0.76 mm pins
Z-Series compatible versions of most headstages available on request.

64 and 32-Channel Acute Headstages

This headstage is designed for the 64 and 32-channel acute NeuroNexus probes. Its miniature electronics occupy the same small footprint as our 16-channel acute headstages.

Part numbers:
NN64AC
NN32AC

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16-Channel Acute Headstages

Connect this headstage directly to NeuroNexus acute 16-channel electrodes or use it with metal microelectrodes via a 0.5 mm adaptor. This small form factor is also available with 4x gain.

Part numbers:
RA16AC
RA16AC4 (4x gain)

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16-Channel Chronic Headstage

The chronic headstage features a low-profile female Omnetics nano connector, and is compatible with TDT microwire arrays as well as NeuroNexus chronic electrodes. The headstage weighs 1.2 g and connects to the preamplifier over a custom cable designed to maximize freedom of movement. The headstage can be used to record from subjects as small as the rat or mouse. The LP16CH low profile headstages provide the same performance with an even smaller footprint, yielding better clearance in tight applications.

Part number:
RA16CH

The LP16CH low profile headstages provide the same performance with an even smaller footprint, yielding better clearance in tight applications. Point to the image below to view both versions side by side.

Part number:
LP16CH

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Four-Channel Acute Headstages

The four channel acute headstages use a low-profile connector for a slim form factor and are available with a unity or 4x gain. This economical 6-pin design provides easy connection to metal microelectrodes for lower channel count systems.

Part numbers:
RA4AC1 (low-profile, unity gain)
RA4AC4 (low-profile, 4x gain)

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16-Channel Switchable Acute Headstage

The switchable headstage features high-voltage, low-leakage solid-state relays to allow remote switching between stimulation and recording on each channel. Relay switching time is 2 ms. The ground line is also switchable, allowing an input channel to instead be used as a reference. The pinout of the SH16 matches the NeuroNexus 16-channel acute electrode, allowing direct connection to the headstage.

Part number:
SH16

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Also available are our patented
ZIF-Clip^® headstages and electrodes...