Differential Amplifier with Active Headstage

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Differential Amplifier with Active Headstage

DP-311

Differential Amplifier with Active Headstage

PRICE ON REQUEST

Product code: DP-311

An AC/DC single channel differential amplifier that is highly suited for extracellular recording using glass or metal microelectrodes.

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Overview

The DP-311 Differential Amplifier with Active Headstage is an AC/DC single channel differential amplifier that is highly suited for extracellular recording or weak EEG and EKG signals. Its headstage can connect to either glass or metal microelectrodes via straight styled E Series Electrode Holders with Ag wire, which is purchased separately.

Supplied with:

The Differential Amplifier with Active Headstage can also be purchased as part of the Extracellular Recording System.

Accessories (available for 1.0, 1.2, 1.5 or 2.0 mm outer diameter glass capillaries, purchased separately):

 

Details

Features


  • High input impedance.
  • Excellent common mode rejection [120 dB @ 60 Hz].
  • High DC tolerance, high gain, low noise & bandwidth filtering.
  • Small active headstage, which can be mounted in micromanipulators.
  • Suitable for use with high impedance glass or metal microelectrodes.

High Input Z, High CMR:

High common mode rejection is very important in minimizing electrical interference. The high input resistance of the Differential Amplifier Series (1012 Ω typical) ensures that the instrument's high CMR will not be degraded by differences in source impedance at the input. This is important in extracellular recording, where the difference in resistance of the recording and indifferent electrode is often large.

High DC Tolerance:
Extracellular action potentials are typically measured in microvolts but are usually accompanied by much larger DC electrode voltages. The Differential Amplifier is designed to amplify these microvolt level events with as much as ±2 V DC at the input.

High Gain, Low Noise & Bandwidth Limiting:
With gain selections at x10, x100, x1000 and x10000, even microvolt signals are sufficiently amplified for computer and recorder inputs. Noise is very low, typically 8 µV p-p at 1 Hz to 10 kHz bandwidth. Reducing the bandwidth with the low pass and high pass filters further lowers noise.

Calibration Signal:
An internal Cal signal provides a convenient check of amplifier gain and operation.

Product Code


DP-311
Differential Amplifier with Active Headstage

Technical


  • Voltage Gain, AC & DC: x10, x100, x1000 & x10000
  • Input Resistance: 1012 Ω typical
  • Leakage Current: 1.0 pA typical
  • Common Mode Rejection: 120 dB min (1000000:1) at 60 Hz
  • Noise, Input Shorted: 8 µV p-p, 1 Hz to 10 kHz typical
  • Low Frequency Filter Settings (high pass): DC, 0.1, 1.0, 10 & 300 Hz
  • High Frequency Filter Settings (low pass): 0.1, 0.3, 1.0, 3.0, 10 & 50 kHz
  • Offset Control Range: ±600 mV min at output, any gain set
  • Calibration Signal: 1 mV p-p at 100 Hz
  • Max. Common Mode Signal: ±2 V
  • Output Voltage Swing: ±10 V (±5 V in gain of 10)
  • Output Resistance: 50 Ω
  • Input Connectors: 2 mm male pins, 0.5" (12.7 mm) spacing
  • Output Connector: BNC
  • Power Requirements: 90 to 270 VAC, 50/60 Hz, 10 VA
  • Physical Size, H x W x D: 5.1 x 21.25 x 18 cm
  • Shipping Weight: 2.3 kg
  • Warranty: Two years, parts and labor