LTC2341-18 - Dual, 18-Bit, 666ksps/ch Differential SoftSpan ADC with Wide Input Common Mode Range
- 666ksps per Channel Throughput
- Two Simultaneous Sampling Channels
- ±4LSB INL (Maximum)
- Guaranteed 18-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
- 95dB Single-Conversion SNR (Typical)
- −114dB THD (Typical) at fIN = 2kHz
- 105dB 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
- 74mW Power Dissipation (Typical)
- 32-Lead (5mm × 5mm) QFN Package
The LTC®2341-18 is an 18-bit, low noise 2-channel simultaneous sampling successive approximation register (SAR) ADC with differential, wide common mode range inputs. Operating from a 5V supply and using the internal reference and buffer, both channels of this SoftSpanTM ADC can be independently configured on a conversion-by-conversion basis to accept ±4.096V, 0V to 4.096V, ±2.048V, or 0V to 2.048V signals. One channel may also be disabled to increase throughput on the other channel.
The wide input common mode range and 105dB CMRR of the LTC2341-18 analog inputs allow the ADC to directly digitize a variety of signals, simplifying signal chain design. This input signal flexibility, combined with ±4LSB INL, no missing codes at 18 bits, and 95dB SNR, makes the LTC2341-18 an ideal choice for many applications requiring wide dynamic range.
The LTC2341-18 supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces. Either one or two lanes of data output may be employed in CMOS mode, allowing the user to optimize bus width and throughput.
PackagingFor complete and up to date package information and drawings, please refer to our packaging page
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
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Demo BoardsLinear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.
|DC2581A-A||LTC2341-18 Demo Board | Dual, 18-Bit, 666ksps Differential ±5V Input SoftSpan ADC with Wide Input Common Mode Range (req. DC590, DC2026, DC890)||$150.00|
|DC2026C||Linduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform||$75.00|
|DC590B||Isolated USB Serial Controller for Linear Technology QuikEval-Compatible Demo Boards||$50.00|
|DC890B||USB Data Acquisition Controller, for PScope Evaluation Kits (up to 250Mbps, CMOS/LVDS)||$300.00|
- Programmable Logic Controllers
- Industrial Process Control
- Medical Imaging
- High Speed Data Acquisition
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