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Acute (Non-ZIF) Headstages
Acute(Non‐ZIF)Headstages
NN64AC64‐ChannelAcuteHeadstage
The 16 Channel acute The 64 Channel Acute headstage is recommended for
extracellular neurophysiology using silicon electrodes, metal microelectrodes or
microwire arrays with input impedance from 20 kOhm to 5 Mohm.
The headstage features two 40-pin connectors designed for use with NeuroNexus
Acute 64-channel probes. The headstage connects to a PZ series preamplifier via
four mini 26-pin connectors or with System 3 Medusa preamplifiers (such as four
RA16PAs) via four DB25 connectors. In either case, each connector carries the
signals for 16 channels, power and ground. Therefore, each connector can be
connected independently. The connector labeled Bank-1 carries channels 1-16, Bank-
2 carries 17-32, etc.
Part Numbers:
NN64AC—64 Channel Acute Headstage for Medusa PreAmps
NN64AC-Z—64 Channel Acute Headstage for Z-Series (PZ) PreAmps
The headstage has sensitive electronics. Always ground yourself before
handling.
HeadstageVoltageRange
When using a TDT preamplifier the voltage input range of the preamplifier is
typically lower than the headstage and must be considered the effective range
of the system. Check the specifications of your amplifier for voltage range. Also
keep in mind that the range of the headstage varies depending on the power supply
provided by the preamplifier. TDT preamplifiers supply +/- 1.5 V, but third party
preamplifiers may vary. TDT recommends using preamplifiers which deliver +/- 2.5
V or less. Check the preamplifier voltage input and power supply specifications and
headstage gain to determine the voltage range of the system.
The table below lists the input voltage ranges for the NN64AC and NN64AC-Z
headstages for either a +/- 1.5 V or +/- 2.5 V power source.
Headstage input range when using +/-
1.5 V power source
Headstage input range when using +/- 2.5
V power source
+/- 0.9 V +/- 1.9 V
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