RF Sampling 4-GSPS ADC Reference Design with 8-GHz DC-Coupled Differential Amplifier


Design files


Wideband radio frequency (RF) receivers allow greatly increased flexibility in radio designs. The wide instantaneous bandwidth allows flexible tuning without changing hardware and the ability to capture multiple channels at widely separated frequencies.

This reference design describes a wideband RF receiver utilizing a 4-GSPS analog-to-digital converter (ADC), with an 8-GHz, DC-coupled, fully differential amplifier front end. The amplifier front end provides signal gain and allows capture of signals down to DC, which is not possible with a balun-coupled input.

  • 2 GHz Bandwidth RF Sampling Solution
  • Supports DC Coupled Input
  • Supports Single Ended or Differential Input
  • Complete clocking solution
  • Complete power solution
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Design files & products

Design files

Download ready-to-use system files to speed your design process.


Reference design overview and verified performance test data

TIDRIN9.PDF (2590 K)

Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRIO1.PDF (1080 K)

Detailed overview of design layout for component placement

TIDRIO3.ZIP (2546 K)

Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB

TIDRIO2.PDF (7565 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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Buck converters (integrated switch)

TPS543274.5V to 18V Input, 3-A Synchronous Step-Down Converter

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Buck-boost, inverting & split-rail converters (integrated switch)

LMR705032.8V to 5.5V, 300mA Buck/Boost Negative Output Voltage Regulator

Data sheet: PDF
Clock jitter cleaners & synchronizers

LMK04828Ultra low-noise JESD204B compliant clock jitter cleaner with integrated 2370 to 2630-MHz VCO0.

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LMC6762Dual Micro-Power Rail-to-Rail Input CMOS Comparator with Push-Pull Output

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Digital temperature sensors

LM95233±2°C Dual Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface

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Direction-controlled voltage translators

SN74AVC4T7744-bit dual-supply bus transceiver with configurable voltage-level shifting and 3-state outputs

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High-speed ADCs (≥10 MSPS)

ADC12J400012-Bit, 4.0-GSPS, RF Sampling Analog-to-Digital Converter (ADC)

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

LP38513-ADJ3-A, adjustable ultra-low-dropout voltage regulator with low-noise & enable

Data sheet: PDF
Linear & low-dropout (LDO) regulators

LP3878-ADJ800-mA, 16-V, adjustable low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS723-Q1Automotive 200-mA, negative, adjustable low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS749013-A, low-VIN (0.8-V) adjustable ultra-low-dropout voltage regulator with power good and enable

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS79301-EPEnhanced product, ultra-low noise, high PSRR, fast RF, 200-mA low-dropout linear regular

Data sheet: PDF
Noninverting buffers & drivers

SN74LVC1G125Single 1.65-V to 5.5-V buffer with 3-state outputs

Data sheet: PDF | HTML

LMH54018-GHz Ultra wideband fully differential amplifier

Data sheet: PDF | HTML
RF PLLs & synthesizers

TRF3765300M-4800MHz Low Noise Integer-N/Fractional-N PLL with Integrated VCO and up to 8 Outputs

Data sheet: PDF | HTML

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Evaluation board

TSW12J54EVM — Wideband RF receiver reference design

RF Sampling 4GSPS ADC with 8GHz DC-Coupled Fully differential Amplifier. Provides a wide bandwidth high performance AC- or DC-coupled capture platform with up to 2 GHz of continous capture bandwidth. Built-in DDC functions enable tuning, down-conversion and bandwidth reduction of captured signals (...)

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Technical documentation

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Type Title Date
* Design guide TIDA-00431 RF Sampling 4-GSPS ADC With Fully-Differential Amplifier Test Report (Rev. A) Jan. 04, 2017

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