LTC2335-18 - 18-Bit, 1Msps 8-Channel Differential ±10.24V Input SoftSpan ADC with Wide Input Common Mode Range

The LTC®2335-18 is an 18-bit, low noise 8-channel multiplexed successive approximation register (SAR) ADC with differential, wide common mode range inputs. Operating from a 5V low voltage supply, flexible high voltage supplies, and using the internal reference and buffer, this SoftSpanTM ADC can be configured on a conversion-by-conversion basis to accept ±10.24V, 0V to 10.24V, ±5.12V, or 0V to 5.12V signals on any channel. Alternately, the ADC may be programmed to cycle through a sequence of channels and ranges without further user intervention.

The wide input common mode range and 118dB CMRR of the LTC2335-18 analog inputs allow the ADC to directly digitize a variety of signals, simplifying signal chain design. This input signal flexibility, combined with ±3LSB INL, no missing codes at 18 bits, and 96.7dB SNR, makes the LTC2335-18 an ideal choice for many high voltage applications requiring wide dynamic range.

The LTC2335-18 supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces.

  • 1Msps Throughput
  • ±3LSB INL (Maximum, ±10.24V Range)
  • Guaranteed 18-Bit, No Missing Codes
  • Differential, Wide Common Mode Range Inputs
  • 8-Channel Multiplexer with SoftSpan Input Ranges: ±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V ±12.5V, 0V to 12.5V, ±6.25V, 0V to 6.25V
  • 96.7dB Single-Conversion SNR (Typical)
  • −109dB THD (Typical) at fIN = 2kHz
  • 118dB CMRR, 125dB Active Crosstalk (Typical)
  • Rail-to-Rail Input Overdrive Tolerance
  • Programmable Sequencer with No-Latency Control
  • Guaranteed Operation to 125°C
  • Integrated Reference and Buffer (4.096V)
  • SPI CMOS (1.8V to 5V) and LVDS Serial I/O
  • No Pipeline Delay, No Cycle Latency
  • 180mW Power Dissipation (Typical)
  • 48-Lead (7mm × 7mm) LQFP Package
Typical Application
LTC2335-18 Typical Application
LTC2335-18 Typical Application
  • Programmable Logic Controllers
  • Industrial Process Control
  • Power Line Monitoring
  • Test and Measurement
LTC2335-18 Package Drawing
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC2335CLX-18#PBF7x7 LQFP-48C$27.07$18.95
LTC2335HLX-18#PBF7x7 LQFP-48H$35.80$25.06
LTC2335ILX-18#PBF7x7 LQFP-48I$31.13$21.79
Demo Boards
Part NumberDescriptionPrice
DC2412A-ALTC2335-18 Demo Board | Octal, 18-Bit, 1Msps Multiplexed Input SAR ADC (req DC590, DC2026 or DC890)$150.00
Companion Boards
Part NumberDescriptionPrice
DC2026CLinduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform$75.00
DC590BIsolated USB Serial Controller for Linear Technology QuikEval-Compatible Demo Boards$50.00
DC890BUSB Data Acquisition Controller, for PScope Evaluation Kits (up to 250Mbps, CMOS/LVDS)$300.00
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