Linear Technology Korea (CEO Hong Sa-kwak, www.linear.com ) announced the launch of a new serial 18-bit 1.6 Msps SAR ADC (Product Name: LTC2379-18). This product supports a fully differential ±5V input range and features an excellent SNR of 101 dB and outstanding THD performance of -118 dB. Based on these performance capabilities, Linear Technology has been able to establish itself as a leading company in the high-performance ADC field.

The LTC2379-18 guarantees operating performance over a temperature range of -40ºC to 125ºC and features a maximum INL of ±2LSB with lossless code. Available in small 3mm x 4mm DFN and MSOP-16 packages, the LTC2379-18 operates at a 2.5V input and consumes only 18mW. With its high SNR, fast throughput, and low power consumption, this product is ideal for high-performance medical, industrial, and automotive applications.

The LTC2379-18 can be complemented by the pin- and software-compatible 16-bit 2Msps LTC2380-16. The LTC2380-16 provides an excellent SNR of 96dB and a maximum INL of ±0.5LSB. The LTC2379-18 and LTC2380-16 are the first 18-/16-bit high-performance SAR ADC products with a speed range from 250ksps to 2Msps. These devices feature a groundbreaking new digital gain compression that significantly reduces the total power consumption of the signal chain by eliminating the need for negative inputs on the ADC driver. The device's shutdown mode further reduces power consumption to 1.25µW in idle state. True no-latency operation enables accurate one-shot measurements even after long idle periods without requiring a minimum sampling rate.

With a user-friendly SPI interface and accurate Busy and Chain pins, it supports I/O voltages from 1.8V to 5V, simplifies digital timing, and minimizes the number of external components.

The LTC2379-18 and LTC2380-16 are currently available, priced at $29.95 for the LTC2379-18 and $24.50 for the LTC2380-16 based on a unit-to-unit ratio. To avoid AC performance degradation, Linear Technology recommends using the LT6350 ADC driver, which features fast settling times for single-ended differential conversion of input signals. Along with this, the precision external reference LTC6655, characterized by high accuracy, low noise, and low power, is also recommended. The DC1783A is an integrated demo board featuring the LTC6350 ADC driver and the LTC6655 reference, available for purchase at www.linear.com or through local retailers. For more information, please refer to www.linear.com/2379 .