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LTC2379/LTC2380 18-Bit 1.6Msps/16-Bit 2Msps SAR ADC Family - Video Product Brief

Alison Steer - Product Marketing Manager Mar 9th 2011

The LTC2379-18 is a low noise, low power, high speed 18-bit successive approximation register (SAR) ADC. Operating from a 2.5V supply, the LTC2379-18 has a ± VREF fully differential input range with VREF ranging from 2.5V to 5.1V. The LTC2379-18 consumes only 18mW and achieves ±2LSB INL maximum, no missing codes at 18-bits with 101dB SNR. The LTC2379-18 has a high speed SPI-compatible serial interface that supports 1.8V, 2.5V, 3.3V and 5V logic while also featuring a daisychain mode. The fast 1.6Msps throughput with no cycle latency makes the LTC2379-18 ideally suited for a wide variety of high speed applications. An internal oscillator sets the conversion time, easing external timing considerations. The LTC2379-18 automatically powers down between conversions, leading to reduced power dissipation that scales with the sampling rate. The LTC2379-18 offers a digital gain compression (DGC) feature that allows a full-scale input to be achieved with inputs that swing between 10% and 90% of the ±VREF analog input range. This allows the input buffer amplifier to be operated from a single positive supply without headroom issues, resulting in a lower power system.

LTC2379/LTC2380 18-Bit 1.6Msps/16-Bit 2Msps SAR ADC Family - Video Product Brief