LTC2345-16
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LTC2345-16

Octal, 16-Bit, 200ksps Differential SoftSpan ADC with Wide Input Common Mode Range

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Info: : PRODUCTION tooltip
Part Details
Part Models 6
1ku List Price Starting From $17.13
Features
  • 200ksps per Channel Throughput
  • Eight Simultaneous Sampling Channels
  • ±1.25LSB INL (Maximum)
  • Guaranteed 16-Bit, No Missing Codes
  • Differential, Wide Common Mode Range Inputs
  • Per-Channel SoftSpan Input Ranges:
    • ±4.096V, 0V to 4.096V, ±2.048V, 0V to 2.048V
    • ±5V, 0V to 5V, ±2.5V, 0V to 2.5V
  • 91dB Single-Conversion SNR (Typical)
  • −113dB THD (Typical) at fIN = 2kHz
  • 102dB CMRR (Typical) at fIN = 200Hz
  • Rail-to-Rail Input Overdrive Tolerance
  • Guaranteed Operation to 125°C
  • Integrated Reference and Buffer (4.096V)
  • SPI CMOS (1.8V to 5V) and LVDS Serial I/O
  • Internal Conversion Clock, No Cycle Latency
  • 81mW Power Dissipation (Typical)
  • 48-Lead (7mm x 7mm) QFN Package
Additional Details
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The LTC2345-16 is a 16-bit, low noise 8-channel simultaneous sampling successive approximation register (SAR) ADC with differential, wide common mode range inputs. Operating from a 5V low voltage supply and using the internal reference and buffer, each channel of this SoftSpanTM ADC can be independently configured on a conversion-by-conversion basis to accept ±4.096, 0V to 4.096V, ±2.048V, or 0V to 2.048V signals. Individual channels may also be disabled to increase throughput on the remaining channels.

The wide input common mode range and 102dB CMRR of the LTC2345-16 analog inputs allow the ADC to directly digitize a variety of signals, simplifying signal chain design. This input signal flexibility, combined with ±1.25LSB INL, no missing codes at 16 bits, and 91dB SNR, makes the LTC2345-16 an ideal choice for many applications requiring wide dynamic range.

The LTC2345-16 supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces. Between one and eight lanes of data output may be employed in CMOS mode, allowing the user to optimize bus width and throughput.

Applications

  • Programmable Logic Controllers
  • Industrial Process Control
  • Medical Imaging
  • High Speed Data Acquisition
Part Models 6
1ku List Price Starting From $17.13

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC2345CUK-16#PBF
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LTC2345HUK-16#PBF
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LTC2345HUK-16#TRPBF
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LTC2345IUK-16#PBF
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LTC2345IUK-16#TRPBF
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Software and Part Ecosystem

Software and Part Ecosystem

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Evaluation Kit

Evaluation Kits 1

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DC2326A-B

LTC2345-16 Demo Board | Octal, 16-Bit, 200ksps Simultaneous Sampling SAR ADC (Requires DC590, DC2026 or DC890)

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DC2326A-B

LTC2345-16 Demo Board | Octal, 16-Bit, 200ksps Simultaneous Sampling SAR ADC (Requires DC590, DC2026 or DC890)

LTC2345-16 Demo Board | Octal, 16-Bit, 200ksps Simultaneous Sampling SAR ADC (Requires DC590, DC2026 or DC890)

Product Detail

Demonstration circuit 2326A shows the proper way to drive the LTC2345 ADC. The LTC2345 is a low noise, high speed, simultaneous sampling 16-/18-bit successive approximation register (SAR) ADC. The LTC2345 has a flexible SoftSpan™ interface that allows conversion-by-conversion control of the input voltage span on a per-channel basis. An internal 2.048V reference and 2× buffer simplify basic operation while an external reference can be used to increase the input range and the SNR of the ADC.

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