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Product attributes Property Value
Manufacturer National Semiconductor
Product Series CLC949
Packaging Bulk |
Number of Bits 12
Sampling Rate (Per Second) 20M
Number of Inputs 1
Input Type Differential
Data Interface Parallel
Configuration S/H-ADC
Ratio - S/H:ADC 1:1
Number of A/D Converters 1
Architecture Pipelined
Reference Type Internal
Voltage - Supply, Analog 4.75V ~ 5.25V
Voltage - Supply, Digital 4.75V ~ 5.25V
Features -
Operating Temperature 0°C ~ 70°C (TA)
Mounting Type Surface Mount
Grade -
Qualification -
Package / Case 44-LCC (J-Lead)
Supplier Device Package 44-PLCC (16.51x16.51)

The CLC949ACQ is a 12-bit, 20 MSPS single-channel analog-to-digital converter from National Semiconductor. It features a sample-and-hold architecture and a parallel output interface, enabling straightforward integration with digital signal processors and FPGAs. With an internal reference and a commercial temperature range of 0°C to 70°C, it is designed for cost-sensitive applications in video, communications, and industrial imaging. The 44-LCC package offers reliable performance in a compact footprint.

  • Simple Parallel Interface: Direct parallel output eliminates the need for serial-to-parallel conversion, reducing latency.
  • Internal Reference: Integrated reference simplifies design and reduces external component count.
  • Cost-Effective: 12-bit resolution at 20 MSPS offers a balanced price-to-performance ratio for commercial products.
  • Proven S/H Architecture: Sample-and-hold front-end ensures accurate sampling of fast analog signals.

Video Digitization

The 20 MSPS sampling rate and 12-bit resolution are well-suited for digitizing composite video signals in surveillance and broadcasting equipment.

Communication Systems

In IF sampling receivers, this ADC can digitize intermediate frequency signals with sufficient bandwidth for demodulation.

Test and Measurement

The parallel interface simplifies connection to FPGAs for custom data acquisition and analysis in benchtop instruments.

Medical Ultrasound

With its internal reference and 12-bit precision, it can be used in ultrasound beamforming front-ends for image processing.

Industrial Imaging

For machine vision systems, the CLC949ACQ provides the speed and resolution needed for line-scan camera digitization.

Q: What is the resolution of the CLC949ACQ?
A: This ADC offers 12-bit resolution, providing good dynamic range for video and communication signals.
Q: What is the sampling rate?
A: The CLC949ACQ supports a sampling rate of 20 MSPS, suitable for moderate-speed digitization.
Q: How many channels does it have?
A: It is a single-channel ADC, ideal for applications requiring one high-speed input.
Q: What interface does it use?
A: It uses a parallel interface, allowing for direct connection to digital buses without serial conversion.
Q: What is the operating temperature range?
A: It operates from 0°C to 70°C, making it suitable for commercial applications.
Q: What is the package type?
A: The device comes in a 44-LCC (J-Lead) package, a common choice for through-hole or socketed designs.
Base Product Number : CLC949
12-bit 20 MSPS ADC Analog-to-Digital Converter LCC-44 Parallel S/H-ADC Single Channel
Q: What is the resolution of the CLC949ACQ?
A: This ADC offers 12-bit resolution, providing good dynamic range for video and communication signals.
Q: What is the sampling rate?
A: The CLC949ACQ supports a sampling rate of 20 MSPS, suitable for moderate-speed digitization.
Q: How many channels does it have?
A: It is a single-channel ADC, ideal for applications requiring one high-speed input.
Q: What interface does it use?
A: It uses a parallel interface, allowing for direct connection to digital buses without serial conversion.
Q: What is the operating temperature range?
A: It operates from 0°C to 70°C, making it suitable for commercial applications.
Q: What is the package type?
A: The device comes in a 44-LCC (J-Lead) package, a common choice for through-hole or socketed designs.