Pseudo-differential serial SAR ADC achieves 96.5-dB SNR
November 08, 2011 // Paul Buckley
Linear Technology has introduced the LTC2369-18, a serial 18-bit, 1.6 Msps pseudo-differential SAR analog-to-digital converter, which achieves 96.5 dB SNR and -120 dB THD while supporting a 0 V to 5 V unipolar input range. The pseudo-differential input simplifies the ADC driver requirement, enabling single-ended drive while benefiting from the reduction of unwanted signals common to both inputs.
The input reduces complexity and lowers the power requirements in the signal chain. Operating from a 2.5 V supply, the LTC2369-18 consumes 18 mW, with a low power shutdown mode that consumes 2.25 µW. When used in combination with the recommended single-ended ADC driver LT6202, the combined power dissipation is 53 mW, a 40% reduction from a fully differential drive circuit. The LTC2369-18 claims to be the industry’s highest performing 18-bit pseudo-differential SAR ADC, featuring a maximum INL of ±2.5 LSB with no missing codes and guaranteed specifications over the -40 to 125°C temperature range.
Complementing the LTC2369-18 is the pin- and software-compatible 16-bit, 2 Msps LTC2370-16. The LTC2370-16 achieves outstanding 94 dB SNR and ±0.85 LSB maximum INL. The LTC2369-18 and LTC2370-16 are the first in a family of 18-/16-bit high performance pseudo-differential SAR ADCs with speeds ranging from 250 ksps to 2 Msps. They offer a user-friendly SPI interface, explicit Busy and Chain pins, I/O voltages from 1.8 V to 5 V and an internal oscillator that simplifies digital timing and minimizes external component count. Their true no-latency operation enables accurate one-shot measurements even after lengthy idle periods with no minimum sample rate required.
The LTC2369-18 family of 18-/16-bit pseudo-differential SAR ADCs broadens the LTC2379-18 family of up to 102 dB SNR, fully differential SAR ADCs introduced earlier in 2011. Linear’s complete portfolio of high performance pseudo and fully differential 18-/16-bit SAR ADCs with high SNR, fast throughput and low power dissipation is ideal for high performance medical, industrial and automotive applications.
The LTC2369-18 and LTC2370-16 are available in small 16-lead MSOP and 4 mm x 3 mm DFN packages.
For further information: www.linear.com/product/LTC2369.
Infineon closes technology gap through International Rectifier takeover
August 20, 2014
Infineon has announced to swallow International Rectifier for the amount of $3 billion. With the move, the Munich-based chipmaker ...
Cloud license from Koubachi expands Sensirion's software capabilities
FlexTiles European project hints at reconfigurable 3D chips
Webinar: Insight into the WiFi-offload technology and lab testing
mCube forms indoor navigation subsidiary
EBVchips get their own dedicated website
August 20, 2014
EBV Elektronik has set up a dedicated website to offer its customers comprehensive online information on its unique EBVchips ...
Elektrobit opens another automotive software R&D facility in Finland
Webinar: Printed circuit board test and in line automation
IDC: 300 million smartphones shipped in Q2
- 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: Tronics' Langlois makes moves in MEMS
Pascal Langlois has been CEO at Tronics for nine months. He discusses plans for the company and directions for the complex and diverse MEMS technology sector.
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.