EC14150D – 150 MS/s, 14 bit, DC Coupled, 2 Channel, High Speed Digitizer ExpressCard 54

The EC14150D (EC) is a DC-coupled version of the EC14150A dual channel waveform capture board that provides a remarkable combination of high speed and high resolution sampling along with a very large memory capacity all in a very compact and low power consuming ExpressCard form factor. At less than 4 watts, the EC represents one of the lowest power consuming digitizer cards ever created for its class. Signal frequencies from DC to 75 MHz can be accurately captured. For higher signal frequencies, where DC coupling is not required, the EC14150A should be considered.

The EC is an ExpressCard 54 mm sized compliant board equipped with standard 'Plug and Play' features common in PCI systems. The entire 512 MB memory may be used as an exceptionally large FIFO for acquiring data directly to the ExpressCard bus continuously non stop (referred to as "EC Continuous Record Mode") or in the more simple 2-step block acquisition to RAM and transfer to PC modes. In either the EC Continuous Record Mode (where the 512 RAM FIFO is used) or Data Transfer Mode, the EC card is capable of sustaining 170 megabyte/sec transfers over the ExpressCard bus interface. Significant test data has shown that recordings with this large 512 MB FIFO buffering the recording process can be continuous at up to 85 MSPS even when operating in traditional non real-time environments such as the Windows operating system.

The EC was designed to maximize the quality of the captured signal in terms of signal-to-noise ratio and spurious-free dynamic range over a very wide frequency range. Input full scale voltage ranges are 2 volts, 1 volt, 500 millivolts, and 250 millivolts. A 12-bit DAC provides dc offset voltage control to allow for setting the input for bipolar operation, unipolar positive, unipolar negative, or any place in between.

A frequency synthesized clock allows the ADC sampling rate to be set to virtually any clock value up to 150 MHz, offering maximum flexibility for sampling rate selection. This frequency selection flexibility comes at no cost to the acquisition clock quality/performance when locked to either the onboard 10 MHz, 5 PPM reference clock or to an externally provided 10 MHz reference clock via the onboard clock input connector. This same sync clock input connector can also be used for applying an external clock to the onboard EC ADCs.

The EC can be set to trigger from the input data channels, the external trigger signal input or via software command. The EC supports single shot, segmented, and pretrigger triggering modes.

The EC14150D supports Wideband Downconverters that feature a single RF input and are available with either 10 MHz or 100 MHz of analysis bandwidth. The RF signal tuning covers 100 kHz to 20 GHz to provide unparalleled real-time signal recording and analysis capability.


Product Specifications


Product: EC14150D (DC-Coupled) Full Data Sheet
Update: Revision 1.03 - 05/12/2014
File Size: 792 KB



External Signal Connections
     Analog Input, Channel 1: MMCX (miniature RF)
     Analog Input, Channel 2: MMCX
     Clock Input: MMCX
     Trigger Input: MMCX
     Digital Input / Output: MMCX
 
Analog Inputs
     Full Scale Voltage Ranges: 2.0V, 1.0V, 500mV, 250mV
     Impedance: 50 ohms
     Bandwidth: 75 MHz (Bessel LP filter, 3rd order)
     Coupling: DC
 
External Trigger
     Signal Type: digital, TTL signal level
     Impedance: >10k ohms
     Bandwidth: 50 MHz
 
Internal Synthesized Clock
     Frequency Range: 45.0 - 150 MHz
     Resolution: better than 5 PPM
     Accuracy: better than 5 PPM
     Unsettable Ranges: 128.9-129.8, 140.6-142.8 MHz
 
External Clock
     Signal Type: sine wave or square wave (mandatory below 45 MHz)
     Coupling: AC
     Impedance: 50 ohms
     Frequency: 10 MHz to 150 MHz
     Amplitude: 100 mV p-p to 2.0 V p-p
 
Post ADC Clock Divider
     Divider Settings: 1, 2, 4, 8, 16, 32
 
Reference Clock
     Internal: 10.0 MHz, +/- 5 ppm max.
 
Digitizer
     Resolution: 14 bits
     Aperture Jitter: 0.1 pS typical
     Clock Rate: 45 to 150 MHz
 
Trigger Modes
     Post Trigger: single start trigger fills active memory
     Segmented: start trigger for each memory segment
 
Trigger Options
     Pretrigger Samples: samples prior to trigger are stored; Single Channel: 8k max.; Dual Channel: 4k max per channel
 
Memory
     Active Size: Up to 256 MegaSamples
     Segment Size: Up to 128 MegaSamples
     Segment Re-Arm Time: 150 nanoseconds
     Addressing: DMA transfers from starting address
 
I/O Addressing
     PCI Controller Address: 64 bytes, Plug and Play selected
     Control/Status Registers: 32 bytes, Plug and Play selected
 
Performance
     SFDR (DC-75 MHz): 78dB (2V range at 95% F.S.)
75dB (1V, 500mV ranges at 50% F.S.)
 
     SNR (DC-75 MHz): 70dB (2V, 1V, & 500mV ranges)
64dB (250mV range)
 
Power Requirements
     +3.3V: 1.5 Amps max.
     +1.5V: 0.2 Amps max.
 
Absolute Maximum Ratings
     Analog Inputs: +/- 2 volts
     Trigger Input: -0.2 to +4.0 volts DC
     Clock Input: 5 volts peak to peak
     Ambient Temperature: 0 to 50C