Description

ADS5423 Texas Instruments 14-Bit 80MSPS Pipelined High-Speed ADC Chip

Technical Specifications

• Product Model: ADS5423
• Brand: Texas Instruments (TI)
• Architecture: Single-channel pipelined analog-to-digital converter
• Resolution: 14-bit, guaranteed no missing codes
• Maximum Sampling Rate: 80 MSPS
• Analog Input: Fully differential, 2.2 Vpp full-scale input range, 570 MHz full-power analog bandwidth
• Power Supply: Analog 5 VDC, digital 3.3 VDC CMOS output logic level
• Dynamic Performance
  • SNR: 74.6 dB
  • SFDR: 94 dBc
  • Effective Number of Bits (ENOB): 12.2 bits
• Power Consumption: Typical 1850 mW, maximum 2200 mW
• Digital Interface: 14-bit parallel CMOS two’s complement output, differential external clock input
• Operating Temperature: Industrial grade -40°C ~ +85°C
• Storage Temperature: -55°C ~ +125°C
• Package: 52-pin HTQFP exposed pad (10×10mm) surface-mount package
• Built-in Features: Internal voltage reference, input isolation buffer, 3-clock pipeline fixed latency, on-chip track-and-hold circuit
• Protection: On-chip ESD protection, analog input overvoltage clamping, reverse power supply blocking
• 

Product Overview

The ADS5423 is a classic high-performance pipelined ADC launched by Texas Instruments, widely used for high-frequency RF signal acquisition, vibration spectrum analysis and high-speed automated test measurement systems. It adopts BiCom3 bipolar process to achieve excellent linearity and low harmonic distortion under full sampling rate, and the built-in input buffer effectively isolates internal sampling switching noise from the front-end signal source, simplifying analog front-end circuit design significantly.

It solves key design challenges in high-speed DAQ hardware: poor signal-to-noise ratio of low-cost high-speed ADC chips leading to waveform distortion, complicated external reference circuit layout, insufficient input bandwidth for intermediate frequency signal sampling, and unstable parallel data transmission susceptible to EMI interference in industrial environments. RF hardware engineers, test system developers, aerospace electronic verification technicians and vibration monitoring system designers obtain reliable high-fidelity analog digitization performance with this TI converter chip. The differential input architecture strongly suppresses common-mode electromagnetic interference, while separated analog and digital power domains minimize digital switching noise coupling to sensitive analog circuits. Its parallel CMOS bus directly interfaces with FPGA, DSP and NI PXI modular DAQ backplanes for secondary data processing and real-time streaming storage.