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Home Electrophysiology Products Intracellular/Extracellular Amplifiers Amplifiers Differential Intracellular/Extracellular Amplifiers Series DP-300


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Differential Intracellular/Extracellular Amplifiers Series DP-300

DP-300 Series amplifiers are AC/DC differential amplifiers highly suited for EEG, EKG and extracellular recording. Features include high input impedance, high common mode rejection [100 dB @ 60 Hz], low noise, high gain, high tolerance to DC, and bandwidth filtering.
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Item Listing Full Description Specifications Journal Articles Manuals
Item# Description
640044 DP-301 Differential Amplifier, Single Channel Bench Top
640045 DP-304 Differential Amplifier, 4-Channel Rack Mount Case. Each channel supplied with IC-2S Input Cables, qty. of 2
640046 IC-2S Replacement Input Cable Set, qty. of 2
640047 IC-4M Replacement Input Cable Set, qty. of 2

For local pricing, contact your nearest distributor.



Full Description Back to Top


DP-300 Series amplifiers are AC/DC differential amplifiers highly suited for EEG, EKG and extracellular recording. Features include high input impedance, high common mode rejection [100 dB @ 60 Hz], low noise, high gain, high tolerance to DC, and bandwidth filtering.

High Input Z, High CMR
High common mode rejection is very important in minimizing electrical interference. The high input resistance of the DP-300 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. DP-300 Series are designed to amplify these microvolt level events with as much as ±3 Volts DC at the input.

High Gain, Low Noise & Bandwidth Limiting
With gain selections at x100, x1000 and x10,000, even microvolt signals are sufficiently amplified for computer and recorder inputs. Noise is very low, typically 10 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
The internal Cal signal provides a convenient check of amplifier gain and operation.

Battery Powered/Portable DP-301
Single channel DP-301 is powered with 4 standard 9 V transistor batteries yielding approximately 500 hours of normal operation.

The small size of the DP-301 makes it possible to be placed at the measurement site or inside a Faraday cage. End of battery life is indicated by the Low Bat light.

Rack Mounted DP-304
Model DP-304 is housed in a rack mounting cabinet and is line powered.

Input Cables
The standard IC-2S input cables (2/channel) are unterminated at the outboard end. Optionally available are cables with 2 mm pin and alligator clip, p/n IC-4M. There is no additional cost if specified at time of order.


Specifications Back to Top

Specifications640044640045640046640047
Amplifier: Noise Level10 µV p-p, 1 Hz to 10 kHz10 µV p-p, 1 Hz to 10 kHz  
Amplifier: Output Resistance220 ?220 ?*na ?*na ?
Amplifier: Gainsx100, x1,000 & x10,000x100, x1,000 & x10,000  
Amplifier: Leakage Current50 pA typical50 pA typical  
Power Requirements4 x 9 V alkaline batteries110 to 130 or 220 to 240 VAC, 50/60 Hz, 10 VA  
Case Height Metric8.8 cm17.8 cm*na cm*na cm
Case Width Metric20 cm43.2 cm*na cm*na cm
Case Depth Metric17.5 cm25 cm*na cm*na cm
Shipping Weight Metric2.3 kg6.8 kg*na kg*na kg
WarrantyTwo years, parts and labor (excluding batteries)Three years, parts and labor  
Input Resistance1012 ? typical1012 ? typical  
Common Mode Rejection100 dB min (100,000:1) at 60 Hz100 dB min (100,000:1) at 60 Hz  
Low Frequency (high pass) Filter Settings0.1, 1.0, 10 & 300 Hz0.1, 1.0, 10 & 300 Hz  
High Frequency low pass) Filter Settings0.1, 1.0, 3.0 & 10 kHz0.1, 1.0, 3.0 & 10 kHz  
Calibration Signal1 mV p-p at 10 Hz1 mV p-p at 10 Hz  
Max. Common Mode Signal±3 V±3 V*na V*na V
Output Voltage Swing±10 V±10 V*na V*na V
Output ConnectorsBNCBNC  
CertificationsCECE  
Input ConnectorsBNCBNC  

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Journal Articles Back to Top

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Manuals Back to Top

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