LTC2389-18
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LTC2389-18

18-Bit, 2.5Msps SAR ADC with Pin-Configurable Analog Input Range and 99.8dB SNR

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Part Details
Part Models 7
1ku List Price Starting From $41.72
Features
  • 2.5Msps Throughput Rate
  • ±3LSB INL (Max)
  • Guaranteed 18-Bit, No Missing Codes
  • Pin-Configurable Analog Input Range:
    • ±4.096V Fully Differential
    • 0V to 4.096V Pseudo-Differential Unipolar
    • ±2.048V Pseudo-Differential Bipolar
  • 99.8dB (Fully Differential)/95.2dB (Pseudo Differential) SNR (Typ) at fIN = 2kHz
  • –116dB (Fully Differential)/–112dB (Pseudo Differential) THD (Typ) at fIN = 2kHz
  • Guaranteed Operation to 125°C
  • Single 5V Supply
  • Internal 20ppm/°C (Max) Reference
  • Internal Reference Buffer
  • 162.5mW Power Dissipation at 2.5Msps
  • No Pipeline Delay, No Cycle Latency
  • 1.8V to 5V I/O Voltages
  • Parallel and Serial I/O Interface
  • 48-pin 7mm × 7mm LQFP and QFN Packages
Additional Details
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The LTC2389-18 is a low noise, high speed 18-bit successive approximation register (SAR) ADC. Operating from a single 5V supply, the LTC2389-18 supports pin-configurable fully differential (±4.096V), pseudo-differential unipolar (0V to 4.096V), and pseudo-differential bipolar (±2.048V) analog input ranges, allowing it to interface with multiple signal chain formats without requiring additional level translation or signal conditioning. The LTC2389-18 achieves ±3LSB INL (maximum), no missing codes at 18-bits, and 99.8dB (fully differential)/95.2dB (pseudo differential) SNR (typical).

The LTC2389-18 includes a precision internal 4.096V reference, with a guaranteed 0.5% initial accuracy and a ±20ppm/°C (maximum) temperature coefficient, as well as an internal reference buffer. Fast 2.5Msps throughput with no cycle latency in the parallel interface modes makes the LTC2389-18 ideally suited for a wide variety of high speed applications. An internal oscillator sets the conversion time, easing external timing considerations. The LTC2389-18 dissipates only 162.5mW at 2.5Msps, while both nap and sleep power-down modes are provided to further reduce power consumption during inactive periods.

Applications

  • Medical Imaging
  • High Speed, Wide Dynamic Range Data Acquisition
  • Industrial Process Control
  • Instrumentation
  • ATE
Part Models 7
1ku List Price Starting From $41.72

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Documentation

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Product Lifecycle

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Apr 6, 2021

- 21_0046

Transfer of LQFP and LQFP_EP from AEM to AET

LTC2389CLX-18#PBF

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LTC2389HLX-18#PBF

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Apr 6, 2021

- 21_0046

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Transfer of LQFP and LQFP_EP from AEM to AET

LTC2389CLX-18#PBF

PRODUCTION

LTC2389HLX-18#PBF

PRODUCTION

LTC2389ILX-18#PBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

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

 
PScope
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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.

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Evaluation Kit

Evaluation Kits 1

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DC1826A-A

LTC2389-18 with LTC6655/LT6201, 18-Bit, 2.5Msps, Serial/Parallel SAR ADC with 99.8dB SNR. Requires DC718

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DC1826A-A

LTC2389-18 with LTC6655/LT6201, 18-Bit, 2.5Msps, Serial/Parallel SAR ADC with 99.8dB SNR. Requires DC718

LTC2389-18 with LTC6655/LT6201, 18-Bit, 2.5Msps, Serial/Parallel SAR ADC with 99.8dB SNR. Requires DC718

Product Detail

DC1826A-A Demo Board for:

LTC2389-18 18-Bit, 2.5Msps SAR ADC with Pin-Configurable Analog Input Range and 99.8dB SNR

LTC6655 0.25ppm Noise, Low Drift Precision References

LT6201 Dual 165MHz, Rail-to-Rail Input and Output, 0.95nV/√Hz Low Noise, Op Amp Family


 


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