Specialized Tools for Electrophysiology and Cell Biology Research

DP-311A - Differential Amplifier with Active Headstage

Product Summary

The DP-311A AC/DC Differential Amplifier is highly suited for EEG, EKG and extracellular recording using glass or metal microelectrodes.

 

  • Excellent common mode rejection: 120 dB at 60 Hz
  • Small active headstage which can be mounted in micromanipulators
  • Suitable for use with high impedance glass or metal microelectrodes

The DP-311A AC/DC Differential Amplifier is highly suited for EEG, EKG and extracellular recording using glass or metal microelectrodes. Features include high input impedance, high common mode rejection [120 dB @ 60 Hz], low noise, high gain, high DC tolerance, bandwidth filtering and an active headstage.

High Input Z, High CMR

High common mode rejection is very important in minimizing electrical interference. The high input resistance of the DP-311A Series (1012 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 DP-311A is designed to amplify these microvolt level events with as much as ±2 Volts DC at the input.

High Gain, Low Noise & Bandwidth Limiting

With gain selections at x10, x100, x1000 and x10,000, 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.

The headstage can be connected to the E Series electrode holders with a 2 mm jack and straight body.

DP-311 Headstage
DP-311A Headstage (included)
Voltage Gain, AC & DC x10, x100, x1,000 & x10,000
Input Resistance 1012 Ω typical
Leakage Current 1.0 pA typical
Common Mode Rejection 120 dB min
(1,000,000 :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 Volts 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
Order No. Model No. Product Description USA Price Order
64-0999 ESW-F10N E Series Electrode Holder, straight style, fits 1.0 mm capillary, Ag wire Login Login
64-1000 ESW-F12N E Series Electrode Holder, straight style, fits 1.2 mm capillary, Ag wire Login Login
64-1001 ESW-F15N E Series Electrode Holder, straight style, fits 1.5 mm capillary, Ag wire Login Login
64-1002 ESW-F20N E Series Electrode Holder, straight style, fits 2.0 mm capillary, Ag wire Login Login
64-1003 ESW-F10P E Series Electrode Holder, port, straight style, fits 1.0 mm capillary, Ag wire Login Login
64-1004 ESW-F12P E Series Electrode Holder, port, straight style, fits 1.2 mm capillary, Ag wire Login Login
64-1005 ESW-F15P E Series Electrode Holder, port, straight style, fits 1.5 mm capillary, Ag wire Login Login
64-1006 ESW-F20P E Series Electrode Holder, port, straight style, fits 2.0 mm capillary, Ag wire Login Login
64-1007 ESW-F10V E Series Electrode Holder, straight style, fits 1.0 mm capillary, Ag wire Login Login
64-1008 ESW-F12V E Series Electrode Holder, straight style, fits 1.2 mm capillary, Ag wire Login Login
64-1009 ESW-F15V E Series Electrode Holder, straight style, fits 1.5 mm capillary, Ag wire Login Login
64-1010 ESW-F20V E Series Electrode Holder, straight style, fits 2.0 mm capillary, Ag wire Login Login

References

  1. Loss of Astrocytic Domain Organization in the Epileptic Brain 
    Loss of Astrocytic Domain Organization in the Epileptic Brain
    J Neurosci. 2008 Mar 26;28(13):3264-76

Order No. Model No. Product Description USA Price Order
64-1432 DP-311A Single Channel Differential Amplifier Login Login
Wire Electrodes with 2mm jack and no port
64-0999 ESW-F10N E Series Electrode Holder, straight style, fits 1.0 mm capillary, Ag wire Login Login
64-1000 ESW-F12N E Series Electrode Holder, straight style, fits 1.2 mm capillary, Ag wire Login Login
64-1001 ESW-F15N E Series Electrode Holder, straight style, fits 1.5 mm capillary, Ag wire Login Login
99-0146 ESW-F17V E Series Electrode Holder, straight style, fits 1.7 mm capillary, Ag wire Login Login
64-1002 ESW-F20N E Series Electrode Holder, straight style, fits 2.0 mm capillary, Ag wire Login Login
Wire Electrodes with 2mm jack and port
64-1003 ESW-F10P E Series Electrode Holder, port, straight style, fits 1.0 mm capillary, Ag wire Login Login
64-1004 ESW-F12P E Series Electrode Holder, port, straight style, fits 1.2 mm capillary, Ag wire Login Login
64-1005 ESW-F15P E Series Electrode Holder, port, straight style, fits 1.5 mm capillary, Ag wire Login Login
64-1006 ESW-F20P E Series Electrode Holder, port, straight style, fits 2.0 mm capillary, Ag wire Login Login
Wire Electrodes with 2mm jack and vent
64-1007 ESW-F10V E Series Electrode Holder, straight style, fits 1.0 mm capillary, Ag wire Login Login
64-1008 ESW-F12V E Series Electrode Holder, straight style, fits 1.2 mm capillary, Ag wire Login Login
64-1009 ESW-F15V E Series Electrode Holder, straight style, fits 1.5 mm capillary, Ag wire Login Login
64-1010 ESW-F20V E Series Electrode Holder, straight style, fits 2.0 mm capillary, Ag wire Login Login
Data Acquisition
64-2325 IX-408 8 Channel data recorder with Labscribe software Login Login
64-2431 IX-416 16 channel data recorder with Labscribe software Login Login
Accessories
460-7032 BNC-2 BNC to BNC cable, 2 feet (Pomona) Login Login
460-7013 BNC-6 BNC to BNC cable, 6 feet (Pomona) Login Login
Replacement Parts
64-2433 Replacement active headstage for DP-311A and DP-314 Login Login
64-1423 Replacement headstage for legacy DP-311 Login Login
64-1323 PJ2-5 2.0 mm jack, uninsulated, 5 pack Login Login

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