Giga Sample (GSPS) Analog-to-Digital Converters (ADCs)

Direct RF-Sampling ADCs Sample Beyond 2.7 GHz at up to 3.6 GSPS

TI's 12-bit direct RF-sampling ADCs can directly sample input frequencies up to and beyond 2.7 GHz at up to 3.6 GSPS. A single direct RF-sampling ADC can replace an entire IF-sampling or ZIF-sampling radio signal path subsystem of mixers, LO synthesizers, amplifiers, filters, and ADCs, drastically reducing bill of materials (BOM) cost, design time, and board size, weight, and power. A wide array of applications such as 3G/4G wireless base stations, microwave backhaul, military, and wideband software-defined radio (SDR) can now achieve the benefits that RF-sampling provides.

The ADC12Dxx00RF family of ADCs improves upon TI's existing 12-bit GSPS ADC products by expanding the frequency range over which TI's superior dynamic range can be realized. The ADC12Dxx00RF delivers its excellent noise and linearity performance at RF frequencies beyond the 7th Nyquist zone. This direct RF-sampling ADC family is available in speed grades ranging from dual-channel 500 MSPS to single-channel 3.6 GSPS. They are pin-compatible with TI's ADC12D1x00 and ADC10D1x00 families, enabling system designers to reuse a single design for multiple speed and resolution combinations.

RF-Sampling ADCs

Device Sampling Rate Single-/Dual-Channel (MSPS) Power (W) IMD @ 2.7 GHz
(dBFS)		 Noise Floor
(dBm/Hz)
ADC12D500RF 1000 / 500 2 -69 -150.5
ADC12D800RF 1600 / 800 2.5 -71 -152.2
ADC12D1000RF 2000 / 1000 3.5 -69 -154
ADC12D1600RF 3200 / 1600 4 -70 -154.6
ADC12D1800RF 3600 / 1800 4.4 -64 -155

Featured Product

ADC12D1800RF - 12-bit, single 3.6 GSPS RF-Sampling ADC:



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Unparalleled Performance

RF-Sampling ADC Applications

The RF-sampling ADC family replaces multiple analog components with a single chip, reducing system cost, size, weight, and power, and saving design time. In addition, their excellent performance over a large range of input frequencies up to and beyond 2.7 GHz enables maximum frequency, bandwidth, and overall system programmability and flexibility in many applications including software-defined radio (SDR) and digital pre-distortion (DPD) in LTE/UMTS base stations, radar, lidar, and signal intelligence (SIGINT).

Base stations

  • Allows direct RF-sampling in 3G/4G receive and digital pre-distortion (DPD) signal paths
  • Replace entire IF-sampling and ZIF-sampling subsystems of mixers, LO-synthesizers, amplifiers, filters, and ADCs
  • 1.8 GHz Nyquist zone enables ultra-wideband and multiband radio designs

Microwave Backhaul

  • Enable higher data capacity backhaul link – industry's largest high-resolution Nyquist zone and best performance beyond 2.7 GHz allows for higher-order modulation over channel bandwidths of at least 1.25 GHz
  • RF-sampling capability enables ODU and IDU integration by eliminating entire IF-sampling and ZIF-sampling subsystems
  • RF-sampling capability eliminates multiple frequency down-conversion stages

Software-Defined Radio and Military

  • Replace multiple frequency down-conversion stages and combine multiple narrowband and wideband channels into a single ultra wideband channel
  • Excellent noise and linearity performance beyond 2.7 GHz and industry's largest high-resolution Nyquist zone enable digital implementation of filters and mixers, allowing for on-the-fly programming of bandwidth and frequency to maximize system agility and flexibility

Test & Measurement

  • Enable higher bandwidth scopes and higher resolution, larger bandwidth real-time spectrum analyzers (RTSA)
  • Enable higher linearity analyzers

 






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