Available in either a single- or dual-headstage configuration, the dPatch amplifier’s architecture makes swapping headstages, or adding a second one to a single-headstage version, a plug-and-play operation. The two headstages are independently configurable for either voltage clamp or true high-speed current clamp. Data is streamed from each headstage in parallel and fully synchronized.
5 MHz sampling rate, up to 22-bit resolution One unique feature with dPatch is the headstage data sampling system. Each headstage is continually sampled at 5 MHz. Output filtering has ten settings between 1 MHz and 1 kHz. A resolution of 18 bits is achieved at 1 MHz. For lower filter settings, automatic downsampling increases resolution while optimizing data rates. At a bandwidth setting of 1 kHz the dPatch system provides a signal resolution of better than 22 bits.
Built-in data acquisition system means no third-party digitizer Using a multiplexer-free design, the dPatch provides 8 fully differential analog input channels, 4 analog output channels, and 16 digital outputs (TTL). All I/O channels are sampled continuously (200 kHz for analog inputs, 250 kHz for analog and digital outputs) and available through the user interface.
SutterPatch® Software
The dPatch amplifier, in combination with SutterPatch software, has been engineered to automatically capture and store all amplifier settings, stimulus information and external experiment parameters, and associate them in time with the raw data traces. This includes all amplifier and acquisition settings, as well as timing and progress of the experiment. Fully integrated computer control of the amplifier stages means that the acquisition software is aware of the internal state of the amplifier and digitizer at all times and can track any changes that may occur. This is independent of whether a change is triggered automatically or initiated by the user.
Tracking of Other External Data
In addition to status changes in connected hardware that are automatically tracked, the researcher can manually trigger tags to document events like stimulus application using instruments not connected to the amplifier.
Information about environmental parameters and a more detailed specification of sample properties can be recorded and stored with the raw data. A total of over 500 metadata attributes are supported. Examples include: animal species, strain, date/time when a cell sample was prepared, recording solutions, pipette resistance, hardware properties, and detailed information about stimuli applied.
Data Visualization and Analysis
SutterPatch software has been designed to simplify the navigation and analysis of complex datasets. The scope window supports multiple view modes in both two-dimensional and an innovative three-dimensional display. The 3D view is particularly useful during assay development. Built on top of the latest version of the proven Igor Pro platform, SutterPatch combines native Igor Pro functionality with a wealth of features that are tailored to electrophysiology applications. Both the newcomer and the experienced user of patch clamp programs will feel comfortable using SutterPatch software.
Application modules provide focused functionality for particular applications.
Currently available:
Event Detection Module: A deconvolution algorithm that excels at detecting miniature synaptic events even on a noisy background
Camera Module: An easy way to document the identity and condition of the recorded cell
A Laboratory Workhorse
While dPatch is ready for cutting-edge research, its feature set makes it immediately valuable in any lab setting.
Three headstage feedback ranges for optimal whole-cell and single-channel recording
Automated compensation of electrode and whole-cell capacitance
Series resistance compensation
Simple cabling, quick and easy set-up
High dynamic range of digitizer means no need for variable gain stages
High speed of digitizer means no concern about sample rate
COMMON APPLICATIONS
Single-channel recordings
Auditory research and other rapidly changing signals
Tissue slice recordings
Cultured cell experiments
Cell line studies from adherent or dispersed cells
Optogenetics
FEATURES
Fully integrated single- or dual-headstage patch clamp amplifier and data acquisition system ensures quick and easy setup
Optimized for whole-cell patch clamp recordings in tissue slices, adherent or dissociated cells
Full computer control provides automated compensation of electrode and whole cell capacitance
Voltage and true current clamp capability for complete characterization of cells' electrical activity
Line frequency reduction in SutterPatch
High bandwidth enables characterization of the fastest signals
Three Headstage feedback ranges for single-channel and whole-cell patch clamp recordings
Comprehensive digital compensation circuitry provides utmost precision and signal fidelity
Bundled SutterPatch software provides versatile data management, intuitive navigation and streamlined data analysis.Fully integrated patch clamp amplifier and data acquisition system ensures quick and easy setup
SPECIFICATIONS
back panel of dPatch
The dPatch Integrated Digital Patch Clamp Amplifier is a computer-controlled single- or dual-headstage amplifier optimized for both single-channel and whole-cell recording applications.
Amplifier
Hardware architecture enables all data conversion to be performed near the preparation, well away from known noise sources, such as power supplies and high-speed digital circuitry.
Voltage clamp and true current clamp modes with smart switching between modes to avoid current artifacts
Three choices of headstage feedback elements to optimize both single-channel and whole-cell recording Feedback
Feedback Element
Range
Analog Bandwidth
Noise 10 kHz BW
Pipette Compensation Range
Series Resistance Range
Cell Capacitance Range
Capacitive
±20 nA
> 500 kHz
< 0.2 pArms
10 pF
N/A*
N/A*
500 MΩ
±20 nA
> 200 kHz
< 1 pArms
10 pF
100 MΩ
100 pF
50 MΩ
±200 nA
> 200 kHz
< 2 pArms
10 pF
10 MΩ
1000 pF
*Capacitive feedback range is optimized for single-channel voltage clamp recordings. Whole-cell compensation and current clamp mode are disabled with this range.
Automatic compensation routines for pipette compensation and whole-cell compensation
Series resistance prediction and correction independently programmable
