Sigma Delta-DAC For Precision Data Conversion
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Sigma-Delta DACs for
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The Intrinsix Sigma-Delta DACs for Precision Data Conversion (SD-DAC-PDC) are part of the larger offering of Sigma-Delta IP available from Intrinsix.
The family of SD-DAC-PDC IP is generated utilizing proprietary, patent-pending techniques within the Intrinsix SDM Refinery toolset. A Sigma-Delta Modulator DAC leverages digital gates to perform data converter functions. A high Signal to Noise Ratio (SNR) is achieved by pushing the quantization noise to high frequencies outside the band of interest. The challenge in Sigma-Delta DAC design is the "shaping" of this noise, which is characterized by the Noise Transfer Function (NTF), and the design of efficient filters to attenuate the high frequency noise. The SDM Refinery automates this process: The engineer specifies an Over-Sampling Ratio (OSR), quantization levels, order of complexity and center frequency and SDM Refinery creates the desired DAC. The Intrinsix SDM Refinery also designs high efficiency polyphase half-band interpolation filters to ease some of the system level performance requirements.
Intrinsix SD-DAC-PDC are:
Perfect for
applications that require precision data converter technology:
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Automotive (sensor interface, motion controls, position sensing, etc.)
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Medical (sensor interfaces, for example)
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Industrial (robotics, motion control, etc.)
Silicon proven
architectures can be incorporated in a variety of CMOS-based silicon
technologies such as:
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TSMC, SMIC, UMC, etc
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.250μm, .130μm, .180μm, 90ηm
Available in 20
and 24-bit resolutions
Available in 4th,
5th and 6th Order SD Modulation Complexity (others available upon
request)
Able to achieve
a Signal-to-Noise Ratio (SNR) of 115db
Differential inputs
Optimized for
high precision data conversions
Compact design
resulting in small die area
Very low in
power consumption with a customizable Low Power Mode
Highly tunable
for each application
Available as RTL and
GDSII as well as RTL and Behavioral System models in
industry standard formats such as Verilog-A or Simulink