18-bit, 2.5-Msps SAR ADC achieves 99.8-dB SNR
April 13, 2012 // Paul Buckley
Linear Technology Corporation has introduced what the company claims to be the industry’s fastest 18-bit no cycle latency SAR analog-to-digital converter. The LTC2389-18 achieves 99.8 dB SNR and -116 dB THD at sample rates up to 2.5 Msps.
Operating from a single 5 V supply the LTC2389-18 supports three pin-configurable analog input ranges, easily interfacing to multiple signal chains with a single device. For the highest SNR performance, the LTC2389-18 can be configured for fully differential (±4.096V) inputs. The pseudo-differential unipolar (0 V to 4.096 V) and bipolar (±2.048 V) analog input ranges enable lower power single-ended drive and benefit from the reduction of unwanted signals common to both inputs. The LTC2389-18 is well suited for demanding designs that require maximum signal swings at low power levels in noisy industrial environments.
The LTC2389-18 features DC performance of ±3LSB INL (max), ±10LSB offset error and 18 bits no missing codes resolution. The LTC2389-18 also features a 4.096 V precision internal reference with a 20 ppm/°C (max) temperature coefficient, providing space savings for high density designs.
The LTC2389-18 dissipates 162.5 mW at 2.5 Msps and features a shutdown mode that reduces power dissipation to 75 µW when not converting. The true no latency operation enables accurate one shot measurements even after lengthy idle periods with no minimum sample rate requirement. The LTC2389-18 provides a flexible digital interface supporting 2.5 Msps throughput with parallel interface and 1.9 Msps throughput with serial SPI interface at I/O voltages from 1.8 V to 5 V.
The LTC2389-18 is the first in a family of pin- and software-compatible 18-/16-bit high performance, SAR ADCs with speeds ranging from 250 ksps to 2.5 Msps.
Specifications are guaranteed over the -4 to 125°C temperature range and the devices are available in 48-pin 7 mm x 7 mm LQFP and QFN packages. The LTC2389-18 is priced at $33.90 each in 1,000 piece quantities.
More information about the LTC2389 SAR ADC at
MEMS leaders under pressure, says Yole
July 31, 2014
The MEMS industry is changing as established leaders with manufacturing and an emphasis on delivering components are put ...
OLED lighting to be competitive with LEDs by 2016
Panasonic and Tesla Gigafactory battery plan forges ahead
Surface inspection tool can get customized
Wireless charging - a more cost-effective approach
Sony, Panasonic, Japan Display plan OLED joint venture
July 30, 2014
Sony Corp., Panasonic Corp., and Japan Display Inc. are working together to create a new company, to be named JOLED, which ...
Sony, TSMC win award for silicon-plastic process development
Sensor footprint evolution: Does size matter?
Memscap breaks even on rising Q2 revenue
- Building Blocks for the Internet of Things
- New Linear Regulators Solve Old Problems
- Testing GPS with a Simulator
- DSM presents: Select the best plastic for DDR4
InterviewCEO interview: China, not Apple, is way to go, says mCube CEO
Ben Lee, CEO of MEMS startup mCube, explains why he wants to spend $37 million on being a supplier of sensors to Chinese ODMs and avoiding a design win with Apple or Samsung.
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Altium Ltd is offering EETimes Europe's readers the chance to win one TASKING VX-Toolset for ARM Cortex-M Premium Edition, normally licensed for 2.395 Euros, for ultra-rapid prototyping and code development around ARM Cortex-M based microcontrollers.
The VX-toolset for ARM is the first TASKING compiler suite to receive the Software Platform technology, which is seamlessly...Read more
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.