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Home Electrophysiology Products Intracellular/Extracellular Amplifiers Amplifiers Differential Intracellular/Extracellular Amplifiers Model DP-311


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Differential Intracellular/Extracellular Amplifiers Model DP-311

The DP-311 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.
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Item# Description
641422 DP-311 Differential Amplifier
641423 3110 Replacement Headstage for DP-311 Differential Amplifier

For local pricing, contact your nearest distributor.



Full Description Back to Top

• 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-311 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-311 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-311 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.


Specifications Back to Top

Specifications641422641423
Amplifier: Noise Level8 µV p-p, 1 Hz to 10 kHz typical 
Amplifier: Output Resistance50 ?*na ?
Amplifier: Gainsx10, x100, x1,000 & x10,000 
Amplifier: Leakage Current1.0 pA typical 
Power Requirements90 to 270 VAC, 50/60 Hz, 10 VA 
Case Height Metric5.1 cm*na cm
Case Width Metric21.25 cm*na cm
Case Depth Metric18 cm*na cm
Shipping Weight Metric2.3 kg*na kg
WarrantyTwo years, parts and labor 
Input Resistance1012 ? typical 
Common Mode Rejection120 dB min (1,000,000 :1) at 60 Hz 
Low Frequency (high pass) Filter SettingsDC, 0.1, 1.0, 10 & 300 Hz 
High Frequency low pass) Filter Settings0.1, 0.3, 1.0, 3.0 & 10, 50 kHz 
Calibration Signal1 mV p-p at 100 Hz 
Max. Common Mode Signal±2 V*na V
Output Voltage Swing±10 V (±5 Volts in gain of 10) 
Output ConnectorsBNC 
CertificationsCECE
Offset Control Range±600 mV min at output, any gain set 
Input Connectors2 mm male pins, 0.5” (12.7 mm) spacing 

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Journal Articles Back to Top

Displaying 1 to 10 of 36results for Differential Intracellular/Extracellular Amplifiers Model DP-311   Page 1  2  3  4 

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Manuals Back to Top

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