description: Linear Technology Corporation introduces the industry's fastest 18-bit period-free delay SAR ADC (analog-to-digital converter) LTC2389-18. At sampling rates up to 2.5Msps, the LTC2389-18 achieves an unparalleled 99.8dB SNR and -116dB THD. Operating from a single 5V supply, the LTC2389-18 supports three analog input ranges that are pin-configurable, making it easy to interface with multiple signal links from a single device. For maximum SNR performance, the LTC2389-18 can be configured as a fully differential (±4.096V) input. The pseudo differential unipolar (0V to 4.096V) and bipolar (±2.048V) analog input ranges enable lower power single-ended drive and reduce the unwanted signals common to both inputs. The LTC2389-18 is ideal for demanding designs that require maximum signal swing at low power levels in noisy industrial environments. LTC2389-18 performance summary: 2.5Msps throughput rate ±3LSB INL (maximum) See PDF for details! Cylinder Block,Gas Check Buckle,Air Valve Buckle Tile,Gas Check Buckle Tile Jinan Guohua Green Power Equipment Co.,Ltd. , https://www.guohuagenerator.com
Guaranteed 18-bit, no missing code can be configured via the analog input range of the pin:
±VREF full differential
0V to VREF pseudo differential unipolar ±VREF/2 pseudo differential bipolar
At fIN = 2kHz, the SNR (typ) is 99.8dB (fully differential) / 95.2dB (pseudo-differential)
THD (typ) is -116dB (fully differential) / -112dB (pseudo-differential) at fIN = 2kHz
Guaranteed work to 125 ° C
Single 5V power supply internal 20ppm/°C (max) The reference internal reference buffer consumes 162.5mW at 2.5Msps
No pipeline delay, no cycle delay
1.8V to 5V I/O Voltage Parallel and Serial I/O Interface
48-pin 7mm x 7mm LQFP and QFN packages