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High-speed ADCs (≥10 MSPS)

ADC3669

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16-bit two-channel 500MSPS ADC with LVDS interface and up to 32768x decimation

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Data sheet

ADC3669

ACTIVE
Data sheet Order now

Product details

Sample rate (max) (Msps) 500 Resolution (Bits) 16 Number of input channels 2 Interface type DDR LVDS Analog input BW (MHz) 1400 Features Decimating Filter, Differential Inputs, High Dynamic Range, High Performance, Input buffer, Low latency, Low power Rating Catalog Peak-to-peak input voltage range (V) 2 Power consumption (typ) (mW) 640 Architecture Pipeline SNR (dB) 75.2 ENOB (Bits) 12.3 SFDR (dB) 80 Operating temperature range (°C) -40 to 85 Input buffer Yes
Sample rate (max) (Msps) 500 Resolution (Bits) 16 Number of input channels 2 Interface type DDR LVDS Analog input BW (MHz) 1400 Features Decimating Filter, Differential Inputs, High Dynamic Range, High Performance, Input buffer, Low latency, Low power Rating Catalog Peak-to-peak input voltage range (V) 2 Power consumption (typ) (mW) 640 Architecture Pipeline SNR (dB) 75.2 ENOB (Bits) 12.3 SFDR (dB) 80 Operating temperature range (°C) -40 to 85 Input buffer Yes
VQFNP (RTD) 64 81 mm² (9 mm × 9 mm)
  • 16-bit, dual channel 250 and 500MSPS ADC
  • Noise spectral density: -160.4dBFS/Hz
  • Thermal Noise: 76.4dBFS
  • Single core (non-interleaved) ADC architecture
  • Aperture jitter: 75fs
  • Buffered analog inputs
    • Programmable 100Ω and 200Ω termination
  • Input fullscale: 2VPP
  • Full power input bandwidth (-3dB): 1.4GHz
  • Spectral performance (fIN = 70MHz, -1dBFS):
    • SNR: 75.6dBFS
    • SFDR HD2,3: 80dBc
    • SFDR worst spur: 94dBFS
  • INL: ±2 LSB (typical)
  • DNL: ±0.5 LSB (typical)
  • Digital down-converters (DDCs)
    • Up to four independent DDCs
    • Complex and real decimation
    • Decimation: /2, /4 to /32768 decimation
    • 48-bit NCO phase coherent frequency hopping
  • DDR/Serial LVDS interface
    • 16-bit Parallel DDR LVDS for DDC bypass
    • Serial LVDS for decimation
    • 32-bit output option for high decimation
  • Power consumption: 300mW/channel (500MSPS)
  • 16-bit, dual channel 250 and 500MSPS ADC
  • Noise spectral density: -160.4dBFS/Hz
  • Thermal Noise: 76.4dBFS
  • Single core (non-interleaved) ADC architecture
  • Aperture jitter: 75fs
  • Buffered analog inputs
    • Programmable 100Ω and 200Ω termination
  • Input fullscale: 2VPP
  • Full power input bandwidth (-3dB): 1.4GHz
  • Spectral performance (fIN = 70MHz, -1dBFS):
    • SNR: 75.6dBFS
    • SFDR HD2,3: 80dBc
    • SFDR worst spur: 94dBFS
  • INL: ±2 LSB (typical)
  • DNL: ±0.5 LSB (typical)
  • Digital down-converters (DDCs)
    • Up to four independent DDCs
    • Complex and real decimation
    • Decimation: /2, /4 to /32768 decimation
    • 48-bit NCO phase coherent frequency hopping
  • DDR/Serial LVDS interface
    • 16-bit Parallel DDR LVDS for DDC bypass
    • Serial LVDS for decimation
    • 32-bit output option for high decimation
  • Power consumption: 300mW/channel (500MSPS)

The ADC3668 and ADC3669 (ADC366x) are a 16-bit, 250MSPS and 500MSPS, dual channel analog to digital converters (ADC). The devices are designed for high signal-to-noise ratio (SNR) and deliver a noise spectral density of −160dBFS/Hz (500MSPS).

The ADC366x includes an optional quad band digital down-converter (DDC) supporting wide band decimation by 2 to narrow band decimation by 32768. The DDC uses a 48-bit NCO which supports phase coherent and phase continuous frequency hopping.

The ADC366x is outfitted with a flexible LVDS interface. In decimation bypass mode, the device uses a 16-bit wide parallel DDR LVDS interface. When using decimation, the output data is transmitted using a serial LVDS interface reducing the number of lanes needed as decimation increases. For high decimation ratios, the output resolution can be increased to 32-bit.

The power efficient ADC architecture consumes 300mW/ch at 500MSPS and provides power scaling with lower sampling rates (250mW/ch at 250MSPS).

The ADC3668 and ADC3669 (ADC366x) are a 16-bit, 250MSPS and 500MSPS, dual channel analog to digital converters (ADC). The devices are designed for high signal-to-noise ratio (SNR) and deliver a noise spectral density of −160dBFS/Hz (500MSPS).

The ADC366x includes an optional quad band digital down-converter (DDC) supporting wide band decimation by 2 to narrow band decimation by 32768. The DDC uses a 48-bit NCO which supports phase coherent and phase continuous frequency hopping.

The ADC366x is outfitted with a flexible LVDS interface. In decimation bypass mode, the device uses a 16-bit wide parallel DDR LVDS interface. When using decimation, the output data is transmitted using a serial LVDS interface reducing the number of lanes needed as decimation increases. For high decimation ratios, the output resolution can be increased to 32-bit.

The power efficient ADC architecture consumes 300mW/ch at 500MSPS and provides power scaling with lower sampling rates (250mW/ch at 250MSPS).
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet ADC3668, ADC3669 Dual-Channel, 16-Bit 250MSPS and 500MSPS Analog-to-Digital Converter (ADC) datasheet (Rev. B) PDF | HTML Jun 5, 2025
Application note Optimizing IFF Transponder Turnaround Time Using Ultra-Low Latency ADCs PDF | HTML Jul 16, 2026
Analog design Journal A novel approach to narrowband matching high-speed RF ADCs PDF | HTML Nov 17, 2025
Analog design Journal Sampling around Nyquist holes in high-speed converters PDF | HTML May 16, 2025
Application note Comparing Active vs. Passive High-Speed/RF A/D Converter Front Ends PDF | HTML Mar 28, 2025
Application note Evaluating High-Speed, RF ADC Converter Front-end Architectures PDF | HTML Mar 26, 2025
Application note Improving MSPS ADC’s SFDR While Relaxing AAF Requirements and Using Integrated DDC Features PDF | HTML Feb 18, 2025
Application note The Fine Art of Passive Matching a High-Speed A/D Converter Analog Input Frontend PDF | HTML Dec 13, 2024
Analog design Journal The art of passive matching a high-speed ADC analog-input front end PDF | HTML Sep 23, 2024

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

ADC3669EVM — ADC3669 evaluation module

The ADC3669EVM is an evaluation module (EVM) designed to evaluate the ADC3669 family of highspeed ADCs. The ADC3669EVM is populated with an ADC3669. The ADC3669 is a 16-bit, dual-channel ADC with an LVDS interface, and can operate at sample rates up to 500MSPS. The ADC3669EVM allows for evaluation (...)
User guide: PDF | HTML
Supported products & hardware
Simulation model

ADC3669 IBIS Model

SBAM516.ZIP (39 KB) - IBIS model
Supported products & hardware
Calculation tool

ADC3669-NOISE-ANALYSIS-CALC — Noise analysis calculation tool (SNR/SFDR) for ADC3669 with amplifier input.

Calculation tool for analyzing noise of ADC3669 with an amplifier as the input network.
Supported products & hardware
Design tool

ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired reference voltage, and the tool will list up to two voltage reference recommendations.
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
VQFNP (RTD) 64 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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