LTC1750

PRODUCTION

14-Bit, 80Msps Wide Bandwidth ADC

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Overview

  • Sample Rate: 80Msps
  • 500MHz Full Power Bandwidth S/H
  • Direct IF Sampling Up to 500MHz
  • PGA Front End (2.25VP-P or 1.35VP-P Input Range)
  • 75.5dB SNR and 90dB SFDR (PGA = 0)
  • 73dB SNR and 90dB SFDR (PGA = 1)
  • No Missing Codes
  • Single 5V Supply
  • Power Dissipation: 1.45W
  • Two Pin Selectable Reference Values
  • Two’s Complement or Offset Binary Outputs
  • Out-of-Range Indicator
  • Data Ready Output Clock
  • Pin-for-Pin Family
  • 48-Pin TSSOP Package

The LTC1750 is an 80Msps, 14-bit A/D converter designed for digitizing wide dynamic range signals up to frequencies of 500MHz. The input range of the ADC can be optimized with the on-chip PGA sample-and-hold circuit and flexible reference circuitry.

The LTC1750 has a highly linear sample-and-hold circuit with a bandwidth of 500MHz. The SFDR is 82dB with an input frequency of 250MHz. Ultralow jitter of 0.12psRMS allows undersampling of IF frequencies with minimal degradation in SNR. DC specs include ±3LSB INL and no missing codes.

The digital interface is compatible with 5V, 3V, 2V and LVDS logic systems. The ENC and ENC inputs may be driven differentially from PECL, GTL and other low swing logic families or from single-ended TTL or CMOS. The low noise, high gain ENC and ENC inputs may also be driven by a sinusoidal signal without degrading performance. A separate output power supply can be operated from 0.5V to 5V, making it easy to connect directly to any low voltage DSPs or FIFOs.

The 48-pin TSSOP package with a flow-through pinout simplifies the board layout.

Applications

  • Telecommunications
  • Receivers
  • Cellular Base Stations
  • Spectrum Analysis
  • Imaging Systems
  • MRI
  • Tomography
LTC1750
14-Bit, 80Msps Wide Bandwidth ADC
80Msps, 14-Bit ADC with a 2.25V Differential Input Range Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Software Resources

Evaluation Software 2

PScope

The PScope System is a USB-based product demonstration and data acquisition system for use with high performance ADCs and signal chain receiver family. PScope allows users to evaluate the SNR, SFDR, THD, as well as other key parameters, quickly and easily.

LinearLab Tools

A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards.

Hardware Ecosystem

Parts Product Life Cycle Description
LTC2259-14
PRODUCTION 14-Bit, 80Msps Ultra-Low Power 1.8V ADCs
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Evaluation Kits

eval board
schematic 1
DC699A-B

LTC1750CFW Demo Board | 14-Bit 80MSPS ADC, Requires DC718

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Product Details

DC699A-B: Demo Board for the LTC1750 14-Bit, 80Msps Wide Bandwidth ADC.
DC699A-B
LTC1750CFW Demo Board | 14-Bit 80MSPS ADC, Requires DC718
DC699A-A - Schematic

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