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ADS5294

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Eight-Channel, 14-Bit, 80-MSPS Analog-to-Digital Converter (ADC)

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Data sheet

ADS5294

ACTIVE
Data sheet Order now

Product details

Sample rate (max) (Msps) 80 Resolution (Bits) 12, 14 Number of input channels 8 Interface type Serial LVDS Analog input BW (MHz) 550 Features Low Power Rating Catalog Peak-to-peak input voltage range (V) 2 Power consumption (typ) (mW) 464 Architecture Pipeline SNR (dB) 78.2 ENOB (bit) 12.2 SFDR (dB) 84 Operating temperature range (°C) -40 to 85 Input buffer No
Sample rate (max) (Msps) 80 Resolution (Bits) 12, 14 Number of input channels 8 Interface type Serial LVDS Analog input BW (MHz) 550 Features Low Power Rating Catalog Peak-to-peak input voltage range (V) 2 Power consumption (typ) (mW) 464 Architecture Pipeline SNR (dB) 78.2 ENOB (bit) 12.2 SFDR (dB) 84 Operating temperature range (°C) -40 to 85 Input buffer No
HTQFP (PFP) 80 196 mm² 14 x 14
  • Maximum Sample Rate: 80 MSPS/14-Bit
  • High Signal-to-Noise Ratio
    • 75.5-dBFS SNR at 5 MHz / 80 MSPS
    • 78.2-dBFS SNR at 5 MHz / 80 MSPS and Decimation Filter Enabled
    • 84-dBc SFDR at 5 MHz / 80 MSPS
  • Low Power Consumption
    • 58 mW/CH at 50 MSPS
    • 77 mW/CH at 80 MSPS (2-LVDS Wire Per Channel)
  • Digital Processing Block
    • Programmable FIR Decimation Filter and Oversampling to Minimize Harmonic Interference
    • Programmable IIR High-Pass Filter to Minimize DC Offset
    • Programmable Digital Gain: 0 dB to 12 dB
    • 2-Channel or 4-Channel Averaging
  • Flexible Serialized LVDS Outputs:
    • One or Two Wires of LVDS Output Lines Per Channel Depending on ADC Sampling Rate
    • Programmable Mapping Between ADC Input Channels and LVDS Output Pins-Eases Board Design
    • Variety of Test Patterns to Verify Data Capture by FPGA/Receiver
  • Internal and External References
  • 1.8-V Operation for Low Power Consumption
  • Low-Frequency Noise Suppression
  • Recovery From 6-dB Overload Within 1 Clock Cycle
  • Package: 12-mm × 12-mm 80-Pin QFP
  • Maximum Sample Rate: 80 MSPS/14-Bit
  • High Signal-to-Noise Ratio
    • 75.5-dBFS SNR at 5 MHz / 80 MSPS
    • 78.2-dBFS SNR at 5 MHz / 80 MSPS and Decimation Filter Enabled
    • 84-dBc SFDR at 5 MHz / 80 MSPS
  • Low Power Consumption
    • 58 mW/CH at 50 MSPS
    • 77 mW/CH at 80 MSPS (2-LVDS Wire Per Channel)
  • Digital Processing Block
    • Programmable FIR Decimation Filter and Oversampling to Minimize Harmonic Interference
    • Programmable IIR High-Pass Filter to Minimize DC Offset
    • Programmable Digital Gain: 0 dB to 12 dB
    • 2-Channel or 4-Channel Averaging
  • Flexible Serialized LVDS Outputs:
    • One or Two Wires of LVDS Output Lines Per Channel Depending on ADC Sampling Rate
    • Programmable Mapping Between ADC Input Channels and LVDS Output Pins-Eases Board Design
    • Variety of Test Patterns to Verify Data Capture by FPGA/Receiver
  • Internal and External References
  • 1.8-V Operation for Low Power Consumption
  • Low-Frequency Noise Suppression
  • Recovery From 6-dB Overload Within 1 Clock Cycle
  • Package: 12-mm × 12-mm 80-Pin QFP

The ADS5294 is a low-power 80-MSPS 8-Channel ADC that uses CMOS process technology and innovative circuit techniques. Low power consumption, high SNR, low SFDR, and consistent overload recovery allow users to design high-performance systems.

The digital processing block of the ADS5294 integrates several commonly used digital functions for improving system performance. The device includes a digital filter module that has built-in decimation filters (with lowpass, highpass and bandpass characteristics). The decimation rate is also programmable (by 2, by 4, or by 8). This rate is useful for narrow-band applications, where the filters are used to conveniently improve SNR and knock-off harmonics, while at the same time reducing the output data rate. The device includes an averaging mode where two channels (or even four channels) are averaged to improve SNR.

Serial LVDS outputs reduce the number of interface lines and enable the highest system integration. The digital data from each channel ADC is output over one or two wires of LVDS output lines depending on the ADC sampling rate. This 2-wire interface maintains a low serial-data rate, allowing low-cost FPGA-based receivers to be used even at a high sample rate. The ADC resolution is programmed to 12-bit or 14-bit through registers. A unique feature is the programmable-mapping module that allows flexible mapping between the input channels and the LVDS output pins. This module greatly reduces the complexity of LVDS-output routing, and by reducing the number of PCB layers, potentially results in cheaper system boards.

The device integrates an internal reference trimmed to accurately match across devices. Internal reference mode achieves the best performance. External references can also drive the device.

The device is available in a 12-mm × 12-mm 80-pin QFP package. The device is specified over a –40°C to 85°C operating temperature range. ADS5294 is completely pin-to-pin and register compatible to ADS5292.

The ADS5294 is a low-power 80-MSPS 8-Channel ADC that uses CMOS process technology and innovative circuit techniques. Low power consumption, high SNR, low SFDR, and consistent overload recovery allow users to design high-performance systems.

The digital processing block of the ADS5294 integrates several commonly used digital functions for improving system performance. The device includes a digital filter module that has built-in decimation filters (with lowpass, highpass and bandpass characteristics). The decimation rate is also programmable (by 2, by 4, or by 8). This rate is useful for narrow-band applications, where the filters are used to conveniently improve SNR and knock-off harmonics, while at the same time reducing the output data rate. The device includes an averaging mode where two channels (or even four channels) are averaged to improve SNR.

Serial LVDS outputs reduce the number of interface lines and enable the highest system integration. The digital data from each channel ADC is output over one or two wires of LVDS output lines depending on the ADC sampling rate. This 2-wire interface maintains a low serial-data rate, allowing low-cost FPGA-based receivers to be used even at a high sample rate. The ADC resolution is programmed to 12-bit or 14-bit through registers. A unique feature is the programmable-mapping module that allows flexible mapping between the input channels and the LVDS output pins. This module greatly reduces the complexity of LVDS-output routing, and by reducing the number of PCB layers, potentially results in cheaper system boards.

The device integrates an internal reference trimmed to accurately match across devices. Internal reference mode achieves the best performance. External references can also drive the device.

The device is available in a 12-mm × 12-mm 80-pin QFP package. The device is specified over a –40°C to 85°C operating temperature range. ADS5294 is completely pin-to-pin and register compatible to ADS5292.
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Technical documentation

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Type Title Date
* Data sheet Octal-Channel 14-Bit 80-MSPS High-SNR and Low-Power ADC datasheet (Rev. E) 23 Apr 2018
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024
Application note High Speed ADCs and Amplifiers for Flow Cytometry Applications 12 Oct 2020
Application note Design Considerations for Avoiding Timing Errors during High-Speed ADC, LVDS Dat (Rev. A) 22 May 2015
User guide ADS5294, 8-Channel ADC Evaluation Module (Rev. A) 05 Mar 2015
Application note Why Use Oversampling when Undersampling Can Do the Job? (Rev. A) 19 Jul 2013
Application note Understanding Serial LVDS Capture in High-Speed ADCs 10 Jul 2013

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