Features and Benefits
- 250ksps Throughput Rate
- ±5LSB INL (Max)
- Guaranteed 18-Bit No Missing Codes
- Pseudo-Differential Inputs
- True Bipolar Input Ranges ±6.25V, ±10.24V, ±12.5V
- 95dB SNR (Typ) at fIN = 2kHz
- –111dB THD (Typ) at fIN = 2kHz
- Guaranteed Operation to 125°C
- Single 5V Supply
- Low Drift (20ppm/°C Max) 2.048V Internal Reference
- Onboard Single-Shot Capable Reference Buffer
- No Pipeline Delay, No Cycle Latency
- 1.8V to 5V I/O Voltages
- SPI-Compatible Serial I/O with Daisy-Chain Mode
- Internal Conversion Clock
- Power Dissipation 28mW (Typ)
- 16-Lead MSOP Package
The LTC2326-18 is a low noise, high speed 18-bit successive approximation register (SAR) ADC with pseudo-differential inputs. Operating from a single 5V supply, the LTC2326-18 has a ±10.24V true bipolar input range, making it ideal for high voltage applications which require a wide dynamic range. The LTC2326-18 achieves ±5LSB INL maximum, no missing codes at 18 bits with 95dB SNR.
The LTC2326-18 has an onboard single-shot capable reference buffer and low drift (20ppm/°C max) 2.048V temperature compensated reference. The LTC2326-18 also has a high speed SPI-compatible serial interface that supports 1.8V, 2.5V, 3.3V and 5V logic while also featuring a daisy-chain mode. The fast 250ksps throughput with no cycle latency makes the LTC2326-18 ideally suited for a wide variety of high speed applications. An internal oscillator sets the conversion time, easing external timing considerations. The LTC2326-18 dissipates only 28mW and automatically naps between conversions, leading to reduced power dissipation that scales with the sampling rate. A sleep mode is also provided to reduce the power consumption of the LTC2326-18 to 300μW for further power savings during inactive periods.
- Programmable Logic Controllers
- Industrial Process Control
- High Speed Data Acquisition
- Portable or Compact Instrumentation
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
The LTC2338/LTC2337/LTC2336/LTC2328/LTC2327/ LTC2326 are true bipolar, low power, low noise ADCs with serial outputs that can operate from a single 5V supply. The demo manual refers to the LTC2338-18 but applies to all parts in the family, the only difference being the maximum sample rates and the number of bits. The LTC2338-18 supports a ±20.48V fully differential input range with a 100dB SNR, consumes only 50mW and achieves ±4LSB INL max with no missing codes at 18 bits. The DC1908A demonstrates the DC and AC performance of the LTC2338‑18 in conjunction with the DC590 QuikEval™ and DC718 PScope™ data collection boards.
Software & Systems Requirements
Tools & Simulations
Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits.
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.