LTC2321-12

PRODUCTION

Dual, 12-Bit + Sign, 2Msps Differential Input ADC with Wide Input Common Mode Range

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Overview

  • 2Msps Throughput Rate
  • ±0.5LSB INL (Typ)
  • Guaranteed 12-Bit, No Missing Codes
  • 8VP-P Differential Inputs with Wide Input Common Mode Range
  • 73dB SNR (Typ) at fIN = 500kHz
  • –85dB THD (Typ) at fIN = 500kHz
  • Guaranteed Operation to 125°C
  • Single 3.3V or 5V Supply
  • Low Drift (20ppm/°C Max) 2.048V or 4.096V Internal Reference
  • 1.8V to 2.5V I/O Voltages
  • CMOS or LVDS SPI-Compatible Serial I/O
  • Power Dissipation 30mW/Ch (Typ)
  • Small 28-Lead (4mm × 5mm) QFN Package

The LTC2321-12 is a low noise, high speed dual 12-bit + sign successive approximation register (SAR) ADC with differential inputs and wide input common mode range. Operating from a single 3.3V or 5V supply, the LTC2321-12 has an 8VP-P differential input range, making it ideal for applications which require a wide dynamic range with high common mode rejection. The LTC2321-12 achieves ±0.5LSB INL typical, no missing codes at 12 bits and 73dB SNR.

The LTC2321-12 has an onboard low drift (20ppm/°C max) 2.048V or 4.096V temperature-compensated reference. The LTC2321-12 also has a high speed SPI-compatible serial interface that supports CMOS or LVDS. The fast 2Msps per channel throughput with zero cycle latency makes the LTC2321-12 ideally suited for a wide variety of high speed applications. The LTC2321-12 dissipates only 30mW per channel and offers nap and sleep modes to reduce the power consumption to 5μW for further power savings during inactive periods.

Bits
LTC2321-12 12
LTC2321-14 14
LTC2321-16 16

Applications

  • High Speed Data Acquisition Systems
  • Communications
  • Remote Data Acquisition
  • Imaging
  • Optical Networking
  • Automotive
  • Multiphase Motor Control
LTC2321-12
Dual, 12-Bit + Sign, 2Msps Differential Input ADC with Wide Input Common Mode Range
32k Point FFT fS = 2Msps, fIN = 500klHz 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

LinearLab Tools

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

Tools & Simulations

IBIS Model 2

Evaluation Kits

eval board
schematic 1
DC1996A-F

LTC2321-12 Demo Board | Dual, 12-Bit, 2Msps True Differential Input Serial SAR ADC (Requires DC890)

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Product Details

Demonstration circuit 1996A features the LTC2323 family. With up to 5Msps, these differential, dual channel, 16-bit, serial, high speed successive approximation register (SAR) ADCs are available in a 28-lead QFN package. The LTC2323 family has an internal 20ppm/°C reference and an SPI-compatible serial interface that supports CMOS and LVDS logic. Note the demo board is configured for CMOS operation by default; see the note under JP3 for LVDS operation. The demo manual refers to the LTC2323, but applies to all members of the family, the only difference being the sample rate and the number of bits.
DC1996A-F
LTC2321-12 Demo Board | Dual, 12-Bit, 2Msps True Differential Input Serial SAR ADC (Requires DC890)
DC1996A - Schematic

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