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Coda Octopus F180™
CSE-8225 Very Low Noise,
Highly Configurable,
8-Channel Analog to Digital Converter
Download PDFDesigned with configurability and customization in mind, the Coda Octopus Colmek CSE-8225 board offers the latest analog to digital functionality.
The CSE-8225 analog-to-digital converter provides eight channels of 24-bit Delta-Sigma Analog-to-Digital Conversion with differential inputs and a maximum input range of +/-5V at unity gain on a full length PCI card.
Linking 4 cards together allows for 32 fully differential input channels per system.
The configurable front-end of the CSE-8225 provides the user with a flexible solution for a wide range of applications. The gain for each channel can be individually set in a range of 1/4 to 4096 in steps of 2. Each channel also has configurable high pass and low pass filtering stages.
The CSE-8225 provides compatibility with current popular software environments and allows users to safely and simply expand their existing hardware and software systems. The CSE-8225 is supplied with drivers for Windows 2000, XP and Vista as well as distributions of Linux based on the v2.6 kernel. RTOS and general purpose drivers are available on request.
The supplied driver automatically detects and initializes all cards installed in a system, providing a single interface to access their functionality. The efficient software interface minimizes configuration errors and speeds the integration process.
If your application demands a custom approach, Coda Octopus Colmek engineers are at the ready. Our staff has the ability to design an acquisition package which meets your most demanding requirements. From rapid prototyping and low volume production runs to larger scale builds, our responsiveness is a benefit to any customer needing an immediate data acquisition solution.
- 8 Channels Per Board
- 24-bit Resolution
- Variable Sample Rate/FIR Decimation
- Programmable high-pass and low-pass filtering
- Low Noise
- Up to 128k Sample/s Sampling Rate
- Wide Range Programmable Gain
- Standard full length PCI form factor
CSE 8225 FEATURES
- Low noise, high accuracy amplifier sections
- Programmable gain from to 4096 in stops of 2
- High gain accuracy of +-0.05 dB over the entire range
- Programmable analog high pass filtering
- Programmable low pass digital filtering and decimation
- Up to 128k sample/sec on 8 channels per board
- Multi-board operation for up to 32 simultaneously sampled channels
- Bus Mastering PCI Interface
8225 Analog-to-Digital Converter General Specifications
NOISE, DISTORTION AND CROSSTALK
Equivalent noise densityHarmonic distortion
Ch.-ch. crosstalk
INPUT AMPLIFIER
Input configurationInput impedance
Input voltage at X1 gain
Maximum safe voltage
CMRR
Gain settings
Gain accuracy
DC offset (50, 2kHz out)
HIGH-PASS FILTERING
Input AC couplingAdditional filter
Corner frequency accuracy
LOW-PASS FILTERING
Digital decimation filteringAnalog anti-aliasing
DIGITIZATION
Number of channelsSampling rate
Number of bits
Oversampling ratio
Usable bandwidth
CLOCK
SourceFrequency
Card-card sync.
PCI
Card formatPCI bus format
Data transfer format
Transfer mechanism
PCI bridge
Estimated power
Software Provided
SupportedOperating
System
Driver
Functions:
NOISE, DISTORTION AND CROSSTALK
-156 dBV/rt. Hz maximum at 10 kHz RTI at maximum gain(16nV/rt. Hz)
-120 dBV/rt. Hz maximum at 10 kHz RTO at minimum gain
(1 V/rt. Hz)
0.01% maximum at gains < 256
0.1% maximum at all gains
-100 dB at 1 kHz
INPUT AMPLIFIER
Differential, AC coupled1 Mohm per leg (2 Mohm differential)
+/- 5 Vpk
+/- 12.5 Vpk
70 dB minimum at 1 kHz
to 4096 in steps of 2
(-12.04 dB to 72.25 dB in 6.02 dB increments)
+-0.05 dB (0.6%)
20mV equivalent RTO
HIGH-PASS FILTERING
Single-pole at 1 Hz (always present)Single-pole 50 Hz or 2 kHz high-pass that can be by passed
2%
LOW-PASS FILTERING
Programmable linear-phase low-passCorresponds to decimation rates of 1, 2, or 4
Passband is 45% of output sample rate with < 0.001dB ripple
Greater than 96dB stopband attenuation
3 pole anti-aliasing filter designed to minimize group delay and
amplitude variation in passband
DIGITIZATION
8 per board with simultaneous samplingProgrammable 128KHz, 64KHz, 32KHz
24bit 2s complement
64:1
-3dB at 49% of output sample rate
CLOCK
Internal or external, software selectable33.5544 MHz.
Up to four cards can be linked for 32 simultaneous sampled channels
PCI
Full sized PCI (other formats available on request)PCI 2.1 32-Bit, 33 MHz, 3.3/5V signaling
32-bit packed mode
Bus mastering DMA
Bridge core on Spartan 3E FPGA
20 W from +3.3V, +5V, and +/- 12V supplies
Software Provided
Microsoft Windows
- 2000
- XP
- Vista
kernels
Others on request
Standard character
device driver with
IOCTLs for control
and configuration
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