24-Bit, 1Msps, Pseudo- Differential Unipolar SAR ADC with Integrated Digital Filter

The LTC2368-24 is a low noise, low power, high speed 24-bit successive approximation register (SAR) ADC with an integrated digital averaging filter. Operating from a 2.5V supply, the LTC2368-24 has a 0V to VREF pseudo-differential unipolar input range with VREF ranging from 2.5V to 5.1V. The LTC2368-24 consumes only 21mW (Typ) and achieves ±4.5ppm INL maximum and no missing codes at 24 bits.

The LTC2368-24 has an easy to use integrated digital averaging filter that can average 1 to 65536 conversion results real-time, dramatically improving dynamic range from 98dB at 1Msps to 140dB at 15.25sps. No separate programming interface or configuration register is required.

The high speed SPI-compatible serial interface supports 1.8V, 2.5V, 3.3V and 5V logic while also featuring a daisy-chain mode. The LTC2368-24 automatically powers down between conversions, reducing power dissipation at lower sampling rates.

Applications

* Seismology

* Energy Exploration

* Medical Imaging

* High Speed Data Acquisition

* Industrial Process Control

* ATE

* Guaranteed 24-Bits No Missing Codes* ±0.5ppm INL (Typ)* Integrated Digital Filter with Real-Time Averaging* Low Power: 21mW at 1Msps* 98dB SNR (Typ) at 1Msps* 140dB Dynamic Range (Typ) at 15.25sps* –116dB THD (Typ) at fIN = 2kHz* 50Hz/60Hz Rejection* Guaranteed Operation to 85°C* Single 2.5V Supply* Pseudo-Differential Unipolar Input Range: 0V to VREF* 1.8V to 5V SPI-Compatible Serial I/O with Daisy- Chain Mode* 16-Lead MSOP and 4mm × 3mm DFN Packages